6de53f7 Merge remote-tracking branch 'origin/workspace-management' — radicle-git

modified Cargo.toml

@@ -1,13 +1,8 @@

 [workspace]
 members = [
   "git-commit",
   "git-storage",
   "git-trailers",
   "link-git",
   "radicle-git-ext",
   "radicle-std-ext",
   "radicle-surf",
   # TODO: port gitd-lib over
   # "cli/gitd-lib",
   "test",
 ]

added archived/git-commit/Cargo.toml

@@ -0,0 +1,19 @@

 [package]
 name = "git-commit"
 version = "0.3.0"
 license = "MIT OR Apache-2.0"
 edition = "2021"
 authors = [
   "Alexis Sellier <alexis@radicle.xyz>",
   "Fintan Halpenny <fintan.halpenny@gmail.com>",
 ]
 description = "A small library for parsing, displaying and creating a git commit"
 keywords = ["git", "git-commit", "git-trailers", "radicle"]
 [dependencies]
 thiserror = "1"
 [dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]

added archived/git-commit/src/author.rs

@@ -0,0 +1,129 @@

 use std::{
     fmt,
     num::ParseIntError,
     str::{self, FromStr},
 };
 use thiserror::Error;
 /// The data for indicating authorship of an action within a
 /// [`super::Commit`].
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct Author {
     /// Name corresponding to `user.name` in the git config.
     ///
     /// Note: this must not contain `<` or `>`.
     pub name: String,
     /// Email corresponding to `user.email` in the git config.
     ///
     /// Note: this must not contain `<` or `>`.
     pub email: String,
     /// The time of this author's action.
     pub time: Time,
 }
 /// The time of a [`Author`]'s action.
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub struct Time {
     seconds: i64,
     offset: i32,
 }
 impl Time {
     pub fn new(seconds: i64, offset: i32) -> Self {
         Self { seconds, offset }
     }
     /// Return the time, in seconds, since the epoch.
     pub fn seconds(&self) -> i64 {
         self.seconds
     }
     /// Return the timezone offset, in minutes.
     pub fn offset(&self) -> i32 {
         self.offset
     }
 }
 impl From<Time> for git2::Time {
     fn from(t: Time) -> Self {
         Self::new(t.seconds, t.offset)
     }
 }
 impl From<git2::Time> for Time {
     fn from(t: git2::Time) -> Self {
         Self::new(t.seconds(), t.offset_minutes())
     }
 }
 impl fmt::Display for Time {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let sign = if self.offset.is_negative() { '-' } else { '+' };
         write!(f, "{} {}{:0>4}", self.seconds, sign, self.offset.abs())
     }
 }
 impl fmt::Display for Author {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{} <{}> {}", self.name, self.email, self.time,)
     }
 }
 impl TryFrom<&Author> for git2::Signature<'_> {
     type Error = git2::Error;
     fn try_from(person: &Author) -> Result<Self, Self::Error> {
         let time = git2::Time::new(person.time.seconds, person.time.offset);
         git2::Signature::new(&person.name, &person.email, &time)
     }
 }
 impl<'a> TryFrom<&git2::Signature<'a>> for Author {
     type Error = str::Utf8Error;
     fn try_from(value: &git2::Signature<'a>) -> Result<Self, Self::Error> {
         Ok(Self {
             name: str::from_utf8(value.name_bytes())?.to_string(),
             email: str::from_utf8(value.email_bytes())?.to_string(),
             time: value.when().into(),
         })
     }
 }
 #[derive(Debug, Error)]
 pub enum ParseError {
     #[error("missing '{0}' while parsing person signature")]
     Missing(&'static str),
     #[error("offset was incorrect format while parsing person signature")]
     Offset(#[source] ParseIntError),
     #[error("time was incorrect format while parsing person signature")]
     Time(#[source] ParseIntError),
     #[error("time offset is expected to be '+'/'-' for a person siganture")]
     UnknownOffset,
 }
 impl FromStr for Author {
     type Err = ParseError;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let mut components = s.split(' ');
         let offset = match components.next_back() {
             None => return Err(ParseError::Missing("offset")),
             Some(offset) => offset.parse::<i32>().map_err(ParseError::Offset)?,
         };
         let time = match components.next_back() {
             None => return Err(ParseError::Missing("time")),
             Some(time) => time.parse::<i64>().map_err(ParseError::Time)?,
         };
         let time = Time::new(time, offset);
         let email = components
             .next_back()
             .ok_or(ParseError::Missing("email"))?
             .trim_matches(|c| c == '<' || c == '>')
             .to_owned();
         let name = components.collect::<Vec<_>>().join(" ");
         Ok(Self { name, email, time })
     }
 }

added archived/git-commit/src/headers.rs

@@ -0,0 +1,71 @@

 use std::borrow::Cow;
 const BEGIN_SSH: &str = "-----BEGIN SSH SIGNATURE-----\n";
 const BEGIN_PGP: &str = "-----BEGIN PGP SIGNATURE-----\n";
 /// A collection of headers stored in a [`super::Commit`].
 ///
 /// Note: these do not include `tree`, `parent`, `author`, and `committer`.
 #[derive(Clone, Debug, Default)]
 pub struct Headers(pub(super) Vec<(String, String)>);
 /// A `gpgsig` signature stored in a [`super::Commit`].
 pub enum Signature<'a> {
     /// A PGP signature, i.e. starts with `-----BEGIN PGP SIGNATURE-----`.
     Pgp(Cow<'a, str>),
     /// A SSH signature, i.e. starts with `-----BEGIN SSH SIGNATURE-----`.
     Ssh(Cow<'a, str>),
 }
 impl<'a> Signature<'a> {
     fn from_str(s: &'a str) -> Result<Self, UnknownScheme> {
         if s.starts_with(BEGIN_SSH) {
             Ok(Signature::Ssh(Cow::Borrowed(s)))
         } else if s.starts_with(BEGIN_PGP) {
             Ok(Signature::Pgp(Cow::Borrowed(s)))
         } else {
             Err(UnknownScheme)
         }
     }
 }
 pub struct UnknownScheme;
 impl<'a> ToString for Signature<'a> {
     fn to_string(&self) -> String {
         match self {
             Signature::Pgp(pgp) => pgp.to_string(),
             Signature::Ssh(ssh) => ssh.to_string(),
         }
     }
 }
 impl Headers {
     pub fn new() -> Self {
         Headers(Vec::new())
     }
     pub fn iter(&self) -> impl Iterator<Item = (&str, &str)> {
         self.0.iter().map(|(k, v)| (k.as_str(), v.as_str()))
     }
     pub fn values<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a str> + '_ {
         self.iter()
             .filter_map(move |(k, v)| (k == name).then_some(v))
     }
     pub fn signatures(&self) -> impl Iterator<Item = Signature> + '_ {
         self.0.iter().filter_map(|(k, v)| {
             if k == "gpgsig" {
                 Signature::from_str(v).ok()
             } else {
                 None
             }
         })
     }
     /// Push a header to the end of the headers section.
     pub fn push(&mut self, name: &str, value: &str) {
         self.0.push((name.to_owned(), value.trim().to_owned()));
     }
 }

added archived/git-commit/src/lib.rs

@@ -0,0 +1,295 @@

 //! The `git-commit` crate provides parsing a displaying of a [git
 //! commit][git-commit].
 //!
 //! The [`Commit`] data can be constructed using the `FromStr`
 //! implementation, or by converting from a `git2::Buf`.
 //!
 //! The [`Headers`] can be accessed via [`Commit::headers`]. If the
 //! signatures of the commit are of particular interest, the
 //! [`Commit::signatures`] method can be used, which returns a series of
 //! [`Signature`]s.
 //!
 //! [git-commit]: https://git-scm.com/book/en/v2/Git-Internals-Git-Objects
 use std::{
     fmt::Write as _,
     str::{self, FromStr},
 };
 use git2::{ObjectType, Oid};
 pub mod author;
 pub use author::Author;
 pub mod headers;
 pub use headers::{Headers, Signature};
 pub mod trailers;
 pub use trailers::{OwnedTrailer, Trailer, Trailers};
 /// A git commit in its object description form, i.e. the output of
 /// `git cat-file` for a commit object.
 #[derive(Debug)]
 pub struct Commit {
     tree: Oid,
     parents: Vec<Oid>,
     author: Author,
     committer: Author,
     headers: Headers,
     message: String,
     trailers: Vec<OwnedTrailer>,
 }
 impl Commit {
     pub fn new<I, T>(
         tree: Oid,
         parents: Vec<Oid>,
         author: Author,
         committer: Author,
         headers: Headers,
         message: String,
         trailers: I,
     ) -> Self
     where
         I: IntoIterator<Item = T>,
         OwnedTrailer: From<T>,
     {
         let trailers = trailers.into_iter().map(OwnedTrailer::from).collect();
         Self {
             tree,
             parents,
             author,
             committer,
             headers,
             message,
             trailers,
         }
     }
     /// Read the [`Commit`] from the `repo` that is expected to be found at
     /// `oid`.
     pub fn read(repo: &git2::Repository, oid: Oid) -> Result<Self, error::Read> {
         let odb = repo.odb()?;
         let object = odb.read(oid)?;
         Ok(Commit::try_from(object.data())?)
     }
     /// Write the given [`Commit`] to the `repo`. The resulting `Oid`
     /// is the identifier for this commit.
     pub fn write(&self, repo: &git2::Repository) -> Result<Oid, git2::Error> {
         let odb = repo.odb()?;
         odb.write(ObjectType::Commit, self.to_string().as_bytes())
     }
     /// The tree [`Oid`] this commit points to.
     pub fn tree(&self) -> Oid {
         self.tree
     }
     /// The parent [`Oid`]s of this commit.
     pub fn parents(&self) -> impl Iterator<Item = Oid> + '_ {
         self.parents.iter().copied()
     }
     /// The author of this commit, i.e. the header corresponding to `author`.
     pub fn author(&self) -> &Author {
         &self.author
     }
     /// The committer of this commit, i.e. the header corresponding to
     /// `committer`.
     pub fn committer(&self) -> &Author {
         &self.committer
     }
     /// The message body of this commit.
     pub fn message(&self) -> &str {
         &self.message
     }
     /// The [`Signature`]s found in this commit, i.e. the headers corresponding
     /// to `gpgsig`.
     pub fn signatures(&self) -> impl Iterator<Item = Signature> + '_ {
         self.headers.signatures()
     }
     /// The [`Headers`] found in this commit.
     ///
     /// Note: these do not include `tree`, `parent`, `author`, and `committer`.
     pub fn headers(&self) -> impl Iterator<Item = (&str, &str)> {
         self.headers.iter()
     }
     /// Iterate over the [`Headers`] values that match the provided `name`.
     pub fn values<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a str> + '_ {
         self.headers.values(name)
     }
     /// Push a header to the end of the headers section.
     pub fn push_header(&mut self, name: &str, value: &str) {
         self.headers.push(name, value.trim());
     }
     pub fn trailers(&self) -> impl Iterator<Item = &OwnedTrailer> {
         self.trailers.iter()
     }
 }
 pub mod error {
     use std::str;
     use thiserror::Error;
     use super::author;
     #[derive(Debug, Error)]
     pub enum Read {
         #[error(transparent)]
         Git(#[from] git2::Error),
         #[error(transparent)]
         Parse(#[from] Parse),
     }
     #[derive(Debug, Error)]
     pub enum Parse {
         #[error(transparent)]
         Author(#[from] author::ParseError),
         #[error("invalid '{header}'")]
         InvalidHeader {
             header: &'static str,
             #[source]
             err: git2::Error,
         },
         #[error("invalid git commit object format")]
         InvalidFormat,
         #[error("missing '{0}' while parsing commit")]
         Missing(&'static str),
         #[error("error occurred while checking for git-trailers: {0}")]
         Trailers(#[source] git2::Error),
         #[error(transparent)]
         Utf8(#[from] str::Utf8Error),
     }
 }
 impl TryFrom<git2::Buf> for Commit {
     type Error = error::Parse;
     fn try_from(value: git2::Buf) -> Result<Self, Self::Error> {
         value.as_str().ok_or(error::Parse::InvalidFormat)?.parse()
     }
 }
 impl TryFrom<&[u8]> for Commit {
     type Error = error::Parse;
     fn try_from(data: &[u8]) -> Result<Self, Self::Error> {
         Commit::from_str(str::from_utf8(data)?)
     }
 }
 impl FromStr for Commit {
     type Err = error::Parse;
     fn from_str(buffer: &str) -> Result<Self, Self::Err> {
         let (header, message) = buffer
             .split_once("\n\n")
             .ok_or(error::Parse::InvalidFormat)?;
         let mut lines = header.lines();
         let tree = match lines.next() {
             Some(tree) => tree
                 .strip_prefix("tree ")
                 .map(git2::Oid::from_str)
                 .transpose()
                 .map_err(|err| error::Parse::InvalidHeader {
                     header: "tree",
                     err,
                 })?
                 .ok_or(error::Parse::Missing("tree"))?,
             None => return Err(error::Parse::Missing("tree")),
         };
         let mut parents = Vec::new();
         let mut author: Option<Author> = None;
         let mut committer: Option<Author> = None;
         let mut headers = Headers::new();
         for line in lines {
             // Check if a signature is still being parsed
             if let Some(rest) = line.strip_prefix(' ') {
                 let value: &mut String = headers
                     .0
                     .last_mut()
                     .map(|(_, v)| v)
                     .ok_or(error::Parse::InvalidFormat)?;
                 value.push('\n');
                 value.push_str(rest);
                 continue;
             }
             if let Some((name, value)) = line.split_once(' ') {
                 match name {
                     "parent" => parents.push(git2::Oid::from_str(value).map_err(|err| {
                         error::Parse::InvalidHeader {
                             header: "parent",
                             err,
                         }
                     })?),
                     "author" => author = Some(value.parse::<Author>()?),
                     "committer" => committer = Some(value.parse::<Author>()?),
                     _ => headers.push(name, value),
                 }
                 continue;
             }
         }
         let trailers = trailers::Trailers::parse(message).map_err(error::Parse::Trailers)?;
         let message = message
             .strip_suffix(&trailers.to_string(": "))
             .unwrap_or(message)
             .to_string();
         let trailers = trailers.iter().map(OwnedTrailer::from).collect();
         Ok(Self {
             tree,
             parents,
             author: author.ok_or(error::Parse::Missing("author"))?,
             committer: committer.ok_or(error::Parse::Missing("committer"))?,
             headers,
             message,
             trailers,
         })
     }
 }
 impl ToString for Commit {
     fn to_string(&self) -> String {
         let mut buf = String::new();
         writeln!(buf, "tree {}", self.tree).ok();
         for parent in &self.parents {
             writeln!(buf, "parent {parent}").ok();
         }
         writeln!(buf, "author {}", self.author).ok();
         writeln!(buf, "committer {}", self.committer).ok();
         for (name, value) in self.headers.iter() {
             writeln!(buf, "{name} {}", value.replace('\n', "\n ")).ok();
         }
         writeln!(buf).ok();
         write!(buf, "{}", self.message.trim()).ok();
         writeln!(buf).ok();
         if !self.trailers.is_empty() {
             writeln!(buf).ok();
         }
         for trailer in self.trailers.iter() {
             writeln!(buf, "{}", Trailer::from(trailer).display(": ")).ok();
         }
         buf
     }
 }

added archived/git-commit/src/trailers.rs

@@ -0,0 +1,214 @@

 use std::{borrow::Cow, fmt, fmt::Write, ops::Deref, str::FromStr};
 use git2::{MessageTrailersStrs, MessageTrailersStrsIterator};
 /// A Git commit's set of trailers that are left in the commit's
 /// message.
 ///
 /// Trailers are key/value pairs in the last paragraph of a message,
 /// not including any patches or conflicts that may be present.
 ///
 /// # Usage
 ///
 /// To construct `Trailers`, you can use [`Trailers::parse`] or its
 /// `FromStr` implementation.
 ///
 /// To iterate over the trailers, you can use [`Trailers::iter`].
 ///
 /// To render the trailers to a `String`, you can use
 /// [`Trailers::to_string`] or its `Display` implementation (note that
 /// it will default to using `": "` as the separator.
 ///
 /// # Examples
 ///
 /// ```text
 /// Add new functionality
 ///
 /// Making code better with new functionality.
 ///
 /// X-Signed-Off-By: Alex Sellier
 /// X-Co-Authored-By: Fintan Halpenny
 /// ```
 ///
 /// The trailers in the above example are:
 ///
 /// ```text
 /// X-Signed-Off-By: Alex Sellier
 /// X-Co-Authored-By: Fintan Halpenny
 /// ```
 pub struct Trailers {
     inner: MessageTrailersStrs,
 }
 impl Trailers {
     pub fn parse(message: &str) -> Result<Self, git2::Error> {
         Ok(Self {
             inner: git2::message_trailers_strs(message)?,
         })
     }
     pub fn iter(&self) -> Iter<'_> {
         Iter {
             inner: self.inner.iter(),
         }
     }
     pub fn to_string<'a, S>(&self, sep: S) -> String
     where
         S: Separator<'a>,
     {
         let mut buf = String::new();
         for (i, trailer) in self.iter().enumerate() {
             if i > 0 {
                 writeln!(buf).ok();
             }
             write!(buf, "{}", trailer.display(sep.sep_for(&trailer.token))).ok();
         }
         writeln!(buf).ok();
         buf
     }
 }
 impl fmt::Display for Trailers {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.write_str(&self.to_string(": "))
     }
 }
 pub trait Separator<'a> {
     fn sep_for(&self, token: &Token) -> &'a str;
 }
 impl<'a> Separator<'a> for &'a str {
     fn sep_for(&self, _: &Token) -> &'a str {
         self
     }
 }
 impl<'a, F> Separator<'a> for F
 where
     F: Fn(&Token) -> &'a str,
 {
     fn sep_for(&self, token: &Token) -> &'a str {
         self(token)
     }
 }
 impl FromStr for Trailers {
     type Err = git2::Error;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         Self::parse(s)
     }
 }
 pub struct Iter<'a> {
     inner: MessageTrailersStrsIterator<'a>,
 }
 impl<'a> Iterator for Iter<'a> {
     type Item = Trailer<'a>;
     fn next(&mut self) -> Option<Self::Item> {
         let (token, value) = self.inner.next()?;
         Some(Trailer {
             token: Token(token),
             value: Cow::Borrowed(value),
         })
     }
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Token<'a>(&'a str);
 impl Deref for Token<'_> {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         self.0
     }
 }
 pub struct Display<'a> {
     trailer: &'a Trailer<'a>,
     separator: &'a str,
 }
 impl<'a> fmt::Display for Display<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(
             f,
             "{}{}{}",
             self.trailer.token.deref(),
             self.separator,
             self.trailer.value,
         )
     }
 }
 /// A trailer is a key/value pair found in the last paragraph of a Git
 /// commit message, not including any patches or conflicts that may be
 /// present.
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Trailer<'a> {
     pub token: Token<'a>,
     pub value: Cow<'a, str>,
 }
 impl<'a> Trailer<'a> {
     pub fn display(&'a self, separator: &'a str) -> Display<'a> {
         Display {
             trailer: self,
             separator,
         }
     }
     pub fn to_owned(&self) -> OwnedTrailer {
         OwnedTrailer::from(self)
     }
 }
 /// A version of the [`Trailer`] which owns its token and
 /// value. Useful for when you need to carry trailers around in a long
 /// lived data structure.
 #[derive(Debug)]
 pub struct OwnedTrailer {
     pub token: OwnedToken,
     pub value: String,
 }
 #[derive(Debug)]
 pub struct OwnedToken(String);
 impl Deref for OwnedToken {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 impl<'a> From<&Trailer<'a>> for OwnedTrailer {
     fn from(t: &Trailer<'a>) -> Self {
         OwnedTrailer {
             token: OwnedToken(t.token.0.to_string()),
             value: t.value.to_string(),
         }
     }
 }
 impl<'a> From<Trailer<'a>> for OwnedTrailer {
     fn from(t: Trailer<'a>) -> Self {
         (&t).into()
     }
 }
 impl<'a> From<&'a OwnedTrailer> for Trailer<'a> {
     fn from(t: &'a OwnedTrailer) -> Self {
         Trailer {
             token: Token(t.token.0.as_str()),
             value: Cow::from(&t.value),
         }
     }
 }

added archived/git-commit/t/Cargo.toml

@@ -0,0 +1,26 @@

 [package]
 name = "git-commit-test"
 version = "0.1.0"
 license = "MIT OR Apache-2.0"
 edition = "2021"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies.git-commit]
 path = ".."
 [dev-dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 [dev-dependencies.test-helpers]
 path = "../../test/test-helpers"
 \ No newline at end of file

added archived/git-commit/t/src/commit.rs

@@ -0,0 +1,149 @@

 use std::str::FromStr as _;
 use git_commit::Commit;
 const NO_TRAILER: &str = "\
 tree 50d6ef440728217febf9e35716d8b0296608d7f8
 parent 0ad95dbdfe9fdf81938ca419cf740469173e2022
 parent a4ec9e07e1b2e6f37f7119651ae3bb63b79988b6
 author Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 committer Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 Merge remote-tracking branch 'origin/surf/organise-tests'
 * origin/surf/organise-tests:
   radicle-surf: organise tests
 ";
 const SINGLE_TRAILER: &str = "\
 tree 50d6ef440728217febf9e35716d8b0296608d7f8
 parent 0ad95dbdfe9fdf81938ca419cf740469173e2022
 parent a4ec9e07e1b2e6f37f7119651ae3bb63b79988b6
 author Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 committer Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 Merge remote-tracking branch 'origin/surf/organise-tests'
 * origin/surf/organise-tests:
   radicle-surf: organise tests
 Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
 ";
 const UNSIGNED: &str = "\
 tree c66cc435f83ed0fba90ed4500e9b4b96e9bd001b
 parent af06ad645133f580a87895353508053c5de60716
 author Alexis Sellier <alexis@radicle.xyz> 1664467633 +0200
 committer Alexis Sellier <alexis@radicle.xyz> 1664786099 -0200
 Add SSH functionality with new `radicle-ssh`
 We borrow code from `thrussh`, refactored to be runtime-less.
 X-Signed-Off-By: Alex Sellier
 X-Co-Authored-By: Fintan Halpenny
 ";
 const SSH_SIGNATURE: &str = "\
 -----BEGIN SSH SIGNATURE-----
 U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgvjrQogRxxLjzzWns8+mKJAGzEX
 fm2ALoN7pyvD2ttQAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
 AAAAQIQvhIewOgGfnXLgR5Qe1ZEr2vjekYXTdOfNWICi6ZiosgfZnIqV0enCPC4arVqQg+
 GPp0HqxaB911OnSAr6bwU=
 -----END SSH SIGNATURE-----";
 const PGP_SIGNATURE: &str = "\
 -----BEGIN PGP SIGNATURE-----
 iQIzBAABCAAdFiEEHe7BWIo9taTY6TIiJVL7b2QGbLcFAmNcDhsACgkQJVL7b2QG
 bLcc9Q//RgKf5N4enta9AuszGJZvdFhMPfIDUdw+WAZA6Z8zDPb/aAXZrPP/KIOM
 zmX08FTqjP9B9YeWrEcFuAtxsRNqbDKrfpko9Y6bTsdrAJg3WIypBb9F8YDKJ6BO
 CORJJqWOsLW129jW+mJDhcE0YTvPlcMiMI2qjVXKhU6Ag11W8IRZyTb9tvEaDjBR
 YUnkPvgubv61K9BeUKexE2MakPBldaQtl0MF1Dk7/zo5btLd+KP0SOUKEhuMEu5b
 LATHHdiYjt/2Xz7q8EcrFxXUaipxZe89dfTdi2ooJQw3ZDqjDHsGTHpDeBuzuSaJ
 fKVRwFz/78onfHPhmU4wfUhh+Fcl90p5/T+4dt2K6cr+7rq078e+aJYxkX2d0MG
 PG0xGP0RN4g+X92K1kGuzoe4870xAnRTNh5nUB+X9snO8tVqQZTb0M2yI+sTsKrv
 w/f+uiqL6e9DgIxlO5dgiNHCVoCs1QJ900jUGisrlzS4+n6GzMsG6s3c01X4yY9G
 Ou/kGkMsn7tqejqC9RufygcchCFZqYwaHQwPkiYhfYGMarMpoCFvll0h8tSparpS
 nnpAQXVdu8m3v1YdPUuTg5ksxSOe9HCIlVXGFhxy3iqCVRn+51FRnUI63rMTOm9/
 LBqzvji02lDUPGqPgXfcCS0ty8FM2flBIXnwb8TDzCaPYhf53+U=
 =6dw2
 -----END PGP SIGNATURE-----";
 const SIGNED: &str = "\
 tree c66cc435f83ed0fba90ed4500e9b4b96e9bd001b
 parent af06ad645133f580a87895353508053c5de60716
 author Alexis Sellier <alexis@radicle.xyz> 1664467633 +0200
 committer Alexis Sellier <alexis@radicle.xyz> 1664786099 -0200
 other e6fe3c97619deb8ab4198620f9a7eb79d98363dd
 gpgsig -----BEGIN SSH SIGNATURE-----
  U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgvjrQogRxxLjzzWns8+mKJAGzEX
 fm2ALoN7pyvD2ttQAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
  AAAAQIQvhIewOgGfnXLgR5Qe1ZEr2vjekYXTdOfNWICi6ZiosgfZnIqV0enCPC4arVqQg+
  GPp0HqxaB911OnSAr6bwU=
  -----END SSH SIGNATURE-----
 gpgsig -----BEGIN PGP SIGNATURE-----
  iQIzBAABCAAdFiEEHe7BWIo9taTY6TIiJVL7b2QGbLcFAmNcDhsACgkQJVL7b2QG
  bLcc9Q//RgKf5N4enta9AuszGJZvdFhMPfIDUdw+WAZA6Z8zDPb/aAXZrPP/KIOM
  zmX08FTqjP9B9YeWrEcFuAtxsRNqbDKrfpko9Y6bTsdrAJg3WIypBb9F8YDKJ6BO
  CORJJqWOsLW129jW+mJDhcE0YTvPlcMiMI2qjVXKhU6Ag11W8IRZyTb9tvEaDjBR
  YUnkPvgubv61K9BeUKexE2MakPBldaQtl0MF1Dk7/zo5btLd+KP0SOUKEhuMEu5b
  LATHHdiYjt/2Xz7q8EcrFxXUaipxZe89dfTdi2ooJQw3ZDqjDHsGTHpDeBuzuSaJ
 fKVRwFz/78onfHPhmU4wfUhh+Fcl90p5/T+4dt2K6cr+7rq078e+aJYxkX2d0MG
  PG0xGP0RN4g+X92K1kGuzoe4870xAnRTNh5nUB+X9snO8tVqQZTb0M2yI+sTsKrv
  w/f+uiqL6e9DgIxlO5dgiNHCVoCs1QJ900jUGisrlzS4+n6GzMsG6s3c01X4yY9G
  Ou/kGkMsn7tqejqC9RufygcchCFZqYwaHQwPkiYhfYGMarMpoCFvll0h8tSparpS
  nnpAQXVdu8m3v1YdPUuTg5ksxSOe9HCIlVXGFhxy3iqCVRn+51FRnUI63rMTOm9/
  LBqzvji02lDUPGqPgXfcCS0ty8FM2flBIXnwb8TDzCaPYhf53+U=
  =6dw2
  -----END PGP SIGNATURE-----
 Add SSH functionality with new `radicle-ssh`
 We borrow code from `thrussh`, refactored to be runtime-less.
 X-Signed-Off-By: Alex Sellier
 X-Co-Authored-By: Fintan Halpenny
 ";
 #[test]
 fn test_push_header() {
     let mut commit = Commit::from_str(UNSIGNED).unwrap();
     commit.push_header("other", "e6fe3c97619deb8ab4198620f9a7eb79d98363dd");
     commit.push_header("gpgsig", SSH_SIGNATURE);
     commit.push_header("gpgsig", PGP_SIGNATURE);
     assert_eq!(commit.to_string(), SIGNED);
 }
 #[test]
 fn test_get_header() {
     let commit = Commit::from_str(SIGNED).unwrap();
     assert_eq!(
         commit
             .signatures()
             .map(|sig| sig.to_string())
             .collect::<Vec<_>>(),
         vec![SSH_SIGNATURE.to_owned(), PGP_SIGNATURE.to_owned()]
     );
     assert_eq!(
         commit.values("other").collect::<Vec<_>>(),
         vec![String::from("e6fe3c97619deb8ab4198620f9a7eb79d98363dd")],
     );
     assert!(commit.values("unknown").next().is_none());
 }
 #[test]
 fn test_conversion() {
     assert_eq!(
         Commit::from_str(NO_TRAILER).unwrap().to_string(),
         NO_TRAILER
     );
     assert_eq!(
         Commit::from_str(SINGLE_TRAILER).unwrap().to_string(),
         SINGLE_TRAILER
     );
     assert_eq!(Commit::from_str(SIGNED).unwrap().to_string(), SIGNED);
     assert_eq!(Commit::from_str(UNSIGNED).unwrap().to_string(), UNSIGNED);
 }

added archived/git-commit/t/src/integration.rs

@@ -0,0 +1,28 @@

 use std::io;
 use git_commit::Commit;
 use test_helpers::tempdir::WithTmpDir;
 #[test]
 fn valid_commits() {
     let radicle_git = format!(
         "file://{}",
         git2::Repository::discover(".").unwrap().path().display()
     );
     let repo = WithTmpDir::new(|path| {
         let repo = git2::Repository::clone(&radicle_git, path)
             .map_err(|err| io::Error::new(io::ErrorKind::Other, err))?;
         Ok::<_, io::Error>(repo)
     })
     .unwrap();
     let mut walk = repo.revwalk().unwrap();
     walk.push_head().unwrap();
     // take the first 20 commits and make sure we can parse them
     for oid in walk.take(20) {
         let oid = oid.unwrap();
         let commit = Commit::read(&repo, oid);
         assert!(commit.is_ok(), "Oid: {oid}, Error: {commit:?}")
     }
 }

added archived/git-commit/t/src/lib.rs

@@ -0,0 +1,5 @@

 #[cfg(test)]
 mod commit;
 #[cfg(test)]
 mod integration;

added archived/git-trailers/Cargo.toml

@@ -0,0 +1,20 @@

 [package]
 name = "git-trailers"
 version = "0.1.0"
 authors = [
   "Nuno Alexandre <hi@nunoalexandre.com>",
   "Kim Altintop <kim@eagain.st>",
   "Fintan Halpenny <fintan.halpenny@gmail.com>",
 ]
 edition = "2018"
 license = "GPL-3.0-or-later"
 description = "Library to support parsing and display git trailers <https://git-scm.com/docs/git-interpret-trailers>"
 keywords = ["git"]
 [lib]
 doctest = false
 test = false
 [dependencies]
 nom = "7.1"
 thiserror = "1.0"

added archived/git-trailers/src/lib.rs

@@ -0,0 +1,300 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{borrow::Cow, convert::TryFrom, fmt, ops::Deref};
 use thiserror::Error;
 #[derive(Debug, Error)]
 #[non_exhaustive]
 pub enum Error {
     #[error("the trailers paragraph is missing in the given message")]
     MissingParagraph,
     #[error("trailing data after trailers section: '{0}")]
     Trailing(String),
     #[error(transparent)]
     Parse(#[from] nom::Err<nom::error::Error<String>>),
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Trailer<'a> {
     pub token: Token<'a>,
     pub values: Vec<Cow<'a, str>>,
 }
 impl<'a> Trailer<'a> {
     pub fn display(&'a self, separator: &'a str) -> Display<'a> {
         Display {
             trailer: self,
             separator,
         }
     }
     pub fn to_owned(&self) -> OwnedTrailer {
         OwnedTrailer::from(self)
     }
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Token<'a>(&'a str);
 /// A version of the Trailer<'a> which owns it's token and values. Useful for
 /// when you need to carry trailers around in a long lived data structure.
 #[derive(Debug)]
 pub struct OwnedTrailer {
     pub token: OwnedToken,
     pub values: Vec<String>,
 }
 #[derive(Debug)]
 pub struct OwnedToken(String);
 impl<'a> From<&Trailer<'a>> for OwnedTrailer {
     fn from(t: &Trailer<'a>) -> Self {
         OwnedTrailer {
             token: OwnedToken(t.token.0.to_string()),
             values: t.values.iter().map(|v| v.to_string()).collect(),
         }
     }
 }
 impl<'a> From<Trailer<'a>> for OwnedTrailer {
     fn from(t: Trailer<'a>) -> Self {
         (&t).into()
     }
 }
 impl<'a> From<&'a OwnedTrailer> for Trailer<'a> {
     fn from(t: &'a OwnedTrailer) -> Self {
         Trailer {
             token: Token(t.token.0.as_str()),
             values: t.values.iter().map(Cow::from).collect(),
         }
     }
 }
 impl Deref for OwnedToken {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 #[derive(Debug, Error)]
 #[non_exhaustive]
 pub enum InvalidToken {
     #[error("trailing characters: '{0}'")]
     Trailing(String),
     #[error(transparent)]
     Parse(#[from] nom::Err<nom::error::Error<String>>),
 }
 impl<'a> TryFrom<&'a str> for Token<'a> {
     type Error = InvalidToken;
     fn try_from(s: &'a str) -> Result<Self, Self::Error> {
         match parser::token(s) {
             Ok((rest, token)) if rest.is_empty() => Ok(token),
             Ok((trailing, _)) => Err(InvalidToken::Trailing(trailing.to_owned())),
             Err(e) => Err(e.to_owned().into()),
         }
     }
 }
 impl Deref for Token<'_> {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         self.0
     }
 }
 pub struct Display<'a> {
     trailer: &'a Trailer<'a>,
     separator: &'a str,
 }
 impl<'a> fmt::Display for Display<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(
             f,
             "{}{}{}",
             self.trailer.token.deref(),
             self.separator,
             self.trailer.values.join("\n  ")
         )
     }
 }
 pub trait Separator<'a> {
     fn sep_for(&self, token: &Token) -> &'a str;
 }
 impl<'a> Separator<'a> for &'a str {
     fn sep_for(&self, _: &Token) -> &'a str {
         self
     }
 }
 impl<'a, F> Separator<'a> for F
 where
     F: Fn(&Token) -> &'a str,
 {
     fn sep_for(&self, token: &Token) -> &'a str {
         self(token)
     }
 }
 pub struct DisplayMany<'a, S> {
     separator: S,
     trailers: &'a [Trailer<'a>],
 }
 impl<'a, S> fmt::Display for DisplayMany<'a, S>
 where
     S: Separator<'a>,
 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         for (i, trailer) in self.trailers.iter().enumerate() {
             if i > 0 {
                 writeln!(f)?
             }
             write!(
                 f,
                 "{}",
                 trailer.display(self.separator.sep_for(&trailer.token))
             )?
         }
         Ok(())
     }
 }
 /// Parse the trailers of the given message. It looks up the last paragraph
 /// of the message and attempts to parse each of its lines as a [Trailer].
 /// Fails if no trailers paragraph is found or if at least one trailer
 /// fails to be parsed.
 pub fn parse<'a>(message: &'a str, separators: &'a str) -> Result<Vec<Trailer<'a>>, Error> {
     let trailers_paragraph =
         match parser::paragraphs(message.trim_end()).map(|(_, ps)| ps.last().cloned()) {
             Ok(None) | Err(_) => return Err(Error::MissingParagraph),
             Ok(Some(p)) => {
                 if p.is_empty() {
                     return Err(Error::MissingParagraph);
                 }
                 p
             },
         };
     match parser::trailers(trailers_paragraph, separators) {
         Ok((rest, trailers)) if rest.is_empty() => Ok(trailers),
         Ok((unparseable, _)) => Err(Error::Trailing(unparseable.to_owned())),
         Err(e) => Err(e.to_owned().into()),
     }
 }
 /// Render a slice of trailers.
 ///
 /// The `separator` can be either a string slice, or a closure which may choose
 /// a different separator for each [`Token`] encountered. Note that multiline
 /// trailers are rendered with a fixed indent, so the result is not
 /// layout-preserving.
 pub fn display<'a, S>(separator: S, trailers: &'a [Trailer<'a>]) -> DisplayMany<'a, S>
 where
     S: Separator<'a>,
 {
     DisplayMany {
         separator,
         trailers,
     }
 }
 pub mod parser {
     use std::borrow::Cow;
     use super::{Token, Trailer};
     use nom::{
         branch::alt,
         bytes::complete::{tag, take_until, take_while1},
         character::complete::{line_ending, not_line_ending, one_of, space0, space1},
         combinator::{map, rest},
         multi::{many0, separated_list1},
         sequence::{delimited, preceded, separated_pair, terminated},
         IResult,
     };
     const EMPTY_LINE: &str = "\n\n";
     pub fn paragraphs(s: &str) -> IResult<&str, Vec<&str>> {
         separated_list1(tag(EMPTY_LINE), paragraph)(s)
     }
     pub fn paragraph(s: &str) -> IResult<&str, &str> {
         alt((take_until(EMPTY_LINE), rest))(s)
     }
     /// Parse all the possible trailers.
     /// It stops when it can no longer parse valid trailers.
     pub fn trailers<'a>(s: &'a str, separators: &'a str) -> IResult<&'a str, Vec<Trailer<'a>>> {
         many0(|s| trailer(s, separators))(s)
     }
     /// Parse a trailer, which can have an inlined or multilined value.
     pub fn trailer<'a>(s: &'a str, separators: &'a str) -> IResult<&'a str, Trailer<'a>> {
         let mut parser = separated_pair(token, |s| separator(separators, s), values);
         let (rest, (token, values)) = parser(s)?;
         Ok((rest, Trailer { token, values }))
     }
     /// Parse a trailer token.
     pub(super) fn token(s: &str) -> IResult<&str, Token> {
         take_while1(|c: char| c.is_alphanumeric() || c == '-')(s)
             .map(|(i, token_str)| (i, Token(token_str)))
     }
     /// Parse the trailer separator, which can be delimited by spaces.
     fn separator<'a>(separators: &'a str, s: &'a str) -> IResult<&'a str, char> {
         delimited(space0, one_of(separators), space0)(s)
     }
     /// Parse the trailer values, which gathers the value after the separator
     /// (if any) and possible following multilined values, indented by a
     /// space.
     fn values(s: &str) -> IResult<&str, Vec<Cow<'_, str>>> {
         let (r, opt_inline_value) = until_eol_or_eof(s)?;
         let (r, mut values) = multiline_values(r)?;
         if !opt_inline_value.is_empty() {
             values.insert(0, opt_inline_value.into())
         }
         Ok((r, values))
     }
     fn multiline_values(s: &str) -> IResult<&str, Vec<Cow<'_, str>>> {
         many0(map(indented_line_contents, Cow::from))(s)
     }
     fn until_eol_or_eof(s: &str) -> IResult<&str, &str> {
         alt((until_eol, rest))(s)
     }
     /// Parse an indented line, i.e, a line that starts with a space.
     /// Extracts the line contents, ignoring the indentation and the
     /// new line character.
     fn indented_line_contents(s: &str) -> IResult<&str, &str> {
         preceded(space1, until_eol_or_eof)(s)
     }
     /// Consume the input until the end of the line, ignoring the new line
     /// character.
     fn until_eol(s: &str) -> IResult<&str, &str> {
         terminated(not_line_ending, line_ending)(s)
     }
 }

added archived/git-trailers/t/Cargo.toml

@@ -0,0 +1,22 @@

 [package]
 name = "git-trailers-test"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-or-later"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies]
 assert_matches = "1.5"
 pretty_assertions = "1.1"
 [dev-dependencies.git-trailers]
 path = ".."

added archived/git-trailers/t/src/lib.rs

@@ -0,0 +1,2 @@

+	`#[cfg(test)]`
+	`mod tests;`

added archived/git-trailers/t/src/tests.rs

@@ -0,0 +1,155 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{borrow::Cow, convert::TryFrom as _, ops::Deref as _};
 use assert_matches::assert_matches;
 use git_trailers::{display, parse, Error, Token, Trailer};
 use pretty_assertions::assert_eq;
 #[test]
 fn parse_message_with_valid_trailers() {
     let msg = r#"Subject
 A multiline
 description.
 Co-authored-by: John Doe <john.doe@test.com>
 Ticket: #42
 Tested-by:
     John <john@test.com>
     Jane <jane@test.com>
 Just-a-token:
 "#;
     assert_eq!(
         parse(msg, ":").unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer(
                 "Tested-by",
                 &["John <john@test.com>", "Jane <jane@test.com>"]
             ),
             new_trailer("Just-a-token", &[]),
         ]
     )
 }
 #[test]
 fn parse_message_trailers_with_custom_separators() {
     let separators = ":=$";
     let msg = r#"Subject
 A multiline
 description.
 Co-authored-by: John Doe <john.doe@test.com>
 Ticket = #42
 Tested-by $User <user@test.com>
     John <john@test.com>
     Jane <jane@test.com>
 "#;
     assert_eq!(
         parse(msg, separators).unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer(
                 "Tested-by",
                 &[
                     "User <user@test.com>",
                     "John <john@test.com>",
                     "Jane <jane@test.com>"
                 ]
             ),
         ]
     )
 }
 #[test]
 fn parse_message_trailers_with_missing_token() {
     let msg = r#"Subject
 Good-trailer: true
 John Doe <john.doe@test.com> # Unparsable token due to missing token"#;
     assert_matches!(
         parse(msg, ":"),
         Err(Error::Trailing(s))
             if s == "John Doe <john.doe@test.com> # Unparsable token due to missing token"
     )
 }
 #[test]
 fn parse_message_trailers_with_invalid_token() {
     let msg = r#"Subject
 Good-trailer: true
 &!#: John Doe <john.doe@test.com> # Unparsable token due to invalid token"#;
     assert_matches!(
         parse(msg, ":"),
         Err(Error::Trailing(s))
             if s == "&!#: John Doe <john.doe@test.com> # Unparsable token due to invalid token"
     )
 }
 #[test]
 fn parse_message_with_only_trailers() {
     let msg = r#"Co-authored-by: John Doe <john.doe@test.com>
 Ticket: #42
 Tested-by: Tester <tester@test.com>
 "#;
     assert_eq!(
         parse(msg, ":").unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer("Tested-by", &["Tester <tester@test.com>"]),
         ]
     )
 }
 #[test]
 fn parse_empty_message() {
     let msg = "";
     assert_matches!(parse(msg, ":"), Err(Error::MissingParagraph))
 }
 #[test]
 fn display_static() {
     let msg = r#"Tested-by: Alice
   Bob
   Carol
   Dylan
 Acked-by: Eve"#;
     let parsed = parse(msg, ":").unwrap();
     let rendered = format!("{}", display(": ", &parsed));
     assert_eq!(&rendered, msg);
 }
 #[test]
 fn display_dynamic() {
     let msg = r#"Co-authored-by: John Doe <john.doe@test.com>
 Tested-by: Tester <tester@test.com>
 Fixes #42"#;
     let parsed = parse(msg, ":#").unwrap();
     let rendered = format!(
         "{}",
         display(
             |t: &Token| if t.deref() == "Fixes" { " #" } else { ": " },
             &parsed
         )
     );
     assert_eq!(rendered, msg)
 }
 fn new_trailer<'a>(token: &'a str, values: &[&'a str]) -> Trailer<'a> {
     Trailer {
         token: Token::try_from(token).unwrap(),
         values: values.iter().map(|s| Cow::from(*s)).collect(),
     }
 }

added archived/link-git/Cargo.toml

@@ -0,0 +1,64 @@

 [package]
 name = "link-git"
 version = "0.1.0"
 authors = ["Kim Altintop <kim@eagain.st>"]
 edition = "2018"
 license = "GPL-3.0-or-later"
 description = "Core git types and functionality"
 [lib]
 doctest = false
 test = false
 [dependencies]
 arc-swap = "1.4.0"
 async-process = "1.1.0"
 async-trait = "0.1"
 blocking = "1.0.2"
 bstr = "0.2"
 futures-lite = "1.12.0"
 futures-util = "0.3.15"
 lazy_static = "1.4.0"
 im = "15.0.0"
 once_cell = "1.10"
 parking_lot = "0.12"
 pin-project = "1.0.7"
 regex = "1.5.4"
 rustc-hash = "1.1.0"
 tempfile = "3.4"
 thiserror = "1.0.30"
 tracing = "0.1"
 versions = "3.0.2"
 # gitoxide
 git-actor = "^0.6.0"
 git-hash = "^0.8.0"
 git-lock = "^1.0.1"
 git-object = "^0.15.1"
 git-odb = "^0.24.0"
 git-ref = "^0.9.0"
 git-traverse = "^0.10.0"
 [dependencies.git-features]
 version = "^0.17.0"
 features = ["progress", "parallel", "zlib-ng-compat"]
 [dependencies.git-pack]
 version = "^0.14.0"
 features = ["object-cache-dynamic", "pack-cache-lru-static", "pack-cache-lru-dynamic"]
 [dependencies.git-packetline]
 version = "^0.12.0"
 features = ["async-io"]
 [dependencies.git-protocol]
 version = "^0.12.0"
 features = ["async-client"]
 # compat
 [dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 optional = true

added archived/link-git/src/lib.rs

@@ -0,0 +1,20 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 #[macro_use]
 extern crate async_trait;
 pub mod odb;
 pub mod protocol;
 pub mod refs;
 pub use refs::db as refdb;
 #[cfg(feature = "git2")]
 pub mod service;
 pub use git_actor as actor;
 pub use git_hash as hash;
 pub use git_lock as lock;
 pub use git_object as object;
 pub use git_traverse as traverse;

added archived/link-git/src/odb.rs

@@ -0,0 +1,51 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use git_hash::oid;
 use thiserror::Error;
 pub mod backend;
 pub mod index;
 pub mod pack;
 pub mod window;
 pub use git_pack::{cache, data::Object};
 #[derive(Debug, Error)]
 pub enum Error {
     #[error(transparent)]
     Packed(#[from] index::error::Lookup<pack::error::Data>),
     #[error(transparent)]
     Loose(#[from] git_odb::loose::find::Error),
 }
 pub struct Odb<I, D> {
     pub loose: backend::Loose,
     pub packed: backend::Packed<I, D>,
 }
 impl<I, D> Odb<I, D>
 where
     I: index::Index,
     D: window::Cache,
 {
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.packed.contains(id.as_ref()) || self.loose.contains(id)
     }
     pub fn find<'a>(
         &self,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl cache::DecodeEntry,
     ) -> Result<Option<Object<'a>>, Error> {
         let id = id.as_ref();
         if self.packed.contains(id) {
             return self.packed.find(id, buf, cache).map_err(Into::into);
         }
         self.loose.try_find(id, buf).map_err(Into::into)
     }
 }

added archived/link-git/src/odb/backend.rs

@@ -0,0 +1,36 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use git_hash::oid;
 use git_pack::{cache::DecodeEntry, data::Object};
 use super::{index, pack, window};
 pub type Loose = git_odb::loose::Store;
 pub struct Packed<I, D> {
     pub index: I,
     pub data: D,
 }
 impl<I, D> Packed<I, D>
 where
     I: index::Index,
     D: window::Cache,
 {
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.index.contains(id)
     }
     pub fn find<'a>(
         &self,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, index::error::Lookup<pack::error::Data>> {
         self.index
             .lookup(|info| self.data.get(info), id, buf, cache)
     }
 }

added archived/link-git/src/odb/index.rs

@@ -0,0 +1,307 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     fs,
     io,
     path::{Path, PathBuf},
     sync::Arc,
 };
 use arc_swap::ArcSwap;
 use git_hash::oid;
 use git_pack::{
     cache::DecodeEntry,
     data::{Object, ResolvedBase},
 };
 use parking_lot::Mutex;
 use tracing::trace;
 use super::pack;
 pub use git_pack::index::File as IndexFile;
 mod metrics;
 pub use metrics::{Metrics, Stats, StatsView};
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     pub enum Discover {
         #[error(transparent)]
         Index(#[from] pack::error::Index),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Lookup<E> {
         #[error(transparent)]
         Lookup(E),
         #[error(transparent)]
         Reload(#[from] Discover),
         #[error(transparent)]
         Decode(#[from] git_pack::data::decode_entry::Error),
     }
 }
 pub trait Index {
     fn contains(&self, id: impl AsRef<oid>) -> bool;
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>;
 }
 /// An [`Index`] which can be shared between threads.
 ///
 /// [`Shared`] assumes that:
 ///
 /// * newer packs are likely to contain recent objects
 /// * lookups tend to favour recent objects
 /// * lookups tend to expect the object to be found (the object id is either
 ///   pointed to by a ref, or linked to by an existing object)
 ///
 /// Thus, it:
 ///
 /// * orders indices found in `GIT_DIR/objects/pack` by modification time, and
 ///   queries the more recent ones first
 /// * attempts to rescan `GIT_DIR/objects/pack` when an object id was _not_
 ///   found (assuming that this is due to a compaction)
 ///
 /// Unless a reload occurs, lookups are lock-free and mostly wait-free. Writes
 /// ([`Shared::push`], [`Shared::reload`]) are guarded by a [`Mutex`].
 // TODO: consecutive lookups also tend to resolve to the same pack, so we could
 // remember the index into the `im::Vector` where we found a match and look
 // there first. This is what libgit2 does, but the heuristic is not necessarily
 // true when `Shared` is shared across multiple concurrent link replication
 // tasks; per-namespace packs are independent pre-compaction.
 pub struct Shared<M> {
     pack_dir: PathBuf,
     indices: ArcSwap<im::Vector<Arc<pack::Index>>>,
     write: Mutex<()>,
     stats: M,
 }
 impl Shared<()> {
     pub fn open(git_dir: impl AsRef<Path>) -> Result<Self, error::Discover> {
         let pack_dir = git_dir.as_ref().join("objects").join("pack");
         let indices = discover(&pack_dir)?;
         Ok(Self {
             pack_dir,
             indices: ArcSwap::new(Arc::new(indices)),
             write: Mutex::new(()),
             stats: (),
         })
     }
 }
 impl<M> Shared<M>
 where
     M: Metrics,
 {
     pub fn with_stats(self) -> Shared<Stats> {
         self.with_metrics(Stats::default())
     }
     pub fn with_metrics<N: Metrics>(self, m: N) -> Shared<N> {
         Shared {
             pack_dir: self.pack_dir,
             indices: self.indices,
             write: self.write,
             stats: m,
         }
     }
     pub fn stats(&self) -> M::Snapshot {
         self.stats.snapshot(self.len())
     }
     /// Add a newly discovered [`pack::Index`].
     ///
     /// This index will be considered first by subsequent lookups. Note that it
     /// is only guaranteed that the index will be visible to readers if it
     /// resides in the `git_dir` this [`Shared`] was initialised with.
     pub fn push(&self, idx: pack::Index) {
         let lock = self.write.lock();
         let mut new = self.indices.load_full();
         Arc::make_mut(&mut new).push_front(Arc::new(idx));
         self.indices.store(new);
         drop(lock);
         self.stats.record_push()
     }
     /// Re-scan the packs directory and replace the in-memory indices with the
     /// result.
     ///
     /// If the application can intercept compaction events, this method can be
     /// used to release memory early. Otherwise it is not required to call this
     /// method, as [`Shared`] manages reloads automatically.
     pub fn reload(&self) -> Result<(), error::Discover> {
         let lock = self.write.lock();
         let indices = discover(&self.pack_dir)?;
         self.indices.store(Arc::new(indices));
         drop(lock);
         self.stats.record_reload();
         Ok(())
     }
     pub fn is_empty(&self) -> bool {
         self.indices.load().is_empty()
     }
     pub fn len(&self) -> usize {
         self.indices.load().len()
     }
     fn contains(&self, id: impl AsRef<oid>) -> bool {
         for i in 0..2 {
             for idx in self.indices.load().iter() {
                 if idx.contains(&id) {
                     self.stats.record_hit();
                     return true;
                 }
             }
             if i == 0 && self.reload().is_err() {
                 self.stats.record_miss();
                 return false;
             }
         }
         self.stats.record_miss();
         false
     }
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
     {
         for i in 0..2 {
             for idx in self.indices.load().iter() {
                 if let Some(ofs) = idx.ofs(&id) {
                     self.stats.record_hit();
                     return load_obj(ofs, idx, pack_cache, buf, cache).map(Some);
                 }
             }
             if i == 0 {
                 self.reload()?;
             }
         }
         self.stats.record_miss();
         Ok(None)
     }
 }
 fn load_obj<'a, F, E>(
     ofs: u64,
     idx: &pack::Index,
     pack_cache: F,
     buf: &'a mut Vec<u8>,
     cache: &mut impl DecodeEntry,
 ) -> Result<Object<'a>, error::Lookup<E>>
 where
     F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
 {
     let data = pack_cache(&idx.info).map_err(error::Lookup::Lookup)?;
     let pack = data.file();
     let entry = pack.entry(ofs);
     let obj = pack
         .decode_entry(
             entry,
             buf,
             |id, _| idx.ofs(id).map(|ofs| ResolvedBase::InPack(pack.entry(ofs))),
             cache,
         )
         .map(move |out| Object {
             kind: out.kind,
             data: buf.as_slice(),
             pack_location: None,
         })?;
     Ok(obj)
 }
 fn discover(pack_dir: impl AsRef<Path>) -> Result<im::Vector<Arc<pack::Index>>, error::Discover> {
     let pack_dir = pack_dir.as_ref();
     let pack_dir_disp = pack_dir.display();
     trace!("discovering packs at {}", pack_dir_disp);
     match fs::read_dir(pack_dir) {
         Ok(iter) => {
             let mut paths = Vec::new();
             for entry in iter {
                 let entry = entry?;
                 let path = entry.path();
                 trace!("{}", path.display());
                 let meta = entry.metadata()?;
                 if meta.file_type().is_file() && path.extension().unwrap_or_default() == "idx" {
                     let mtime = meta.modified()?;
                     paths.push((path, mtime));
                 }
             }
             paths.sort_by(|(_, mtime_a), (_, mtime_b)| mtime_a.cmp(mtime_b));
             let indices = paths
                 .into_iter()
                 .rev()
                 .map(|(path, _)| Ok(pack::Index::open(path).map(Arc::new)?))
                 .collect::<Result<_, error::Discover>>()?;
             Ok(indices)
         },
         // It's not an error if the directory doesn't exist, the repository
         // could contain only loose objects
         Err(e) if e.kind() == io::ErrorKind::NotFound => {
             trace!("not a directory: {}", pack_dir_disp);
             Ok(im::Vector::new())
         },
         Err(e) => Err(e.into()),
     }
 }
 impl<M> Index for Shared<M>
 where
     M: Metrics,
 {
     fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.contains(id)
     }
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
     {
         self.lookup(pack_cache, id, buf, cache)
     }
 }

added archived/link-git/src/odb/index/metrics.rs

@@ -0,0 +1,80 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::atomic::{AtomicUsize, Ordering};
 pub struct StatsView {
     /// Total number of times a lookup was successful.
     pub hits: usize,
     /// Total number of times a lookup was unsuccessful.
     pub misses: usize,
     /// Total number of times an index was added explicitly via
     /// [`super::Shared::push`].
     pub pushes: usize,
     /// Total number of reloads via [`super::Shared::reload`].
     pub reloads: usize,
     /// Number of [`crate::odb::pack::Index`]es currently held.
     pub indices: usize,
 }
 #[derive(Default)]
 pub struct Stats {
     hits: AtomicUsize,
     misses: AtomicUsize,
     pushes: AtomicUsize,
     reloads: AtomicUsize,
 }
 pub trait Metrics {
     type Snapshot;
     fn record_hit(&self);
     fn record_miss(&self);
     fn record_push(&self);
     fn record_reload(&self);
     fn snapshot(&self, indices: usize) -> Self::Snapshot;
 }
 impl Metrics for Stats {
     type Snapshot = StatsView;
     fn record_hit(&self) {
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     fn record_miss(&self) {
         self.misses.fetch_add(1, Ordering::Relaxed);
     }
     fn record_push(&self) {
         self.pushes.fetch_add(1, Ordering::Relaxed);
     }
     fn record_reload(&self) {
         self.reloads.fetch_add(1, Ordering::Relaxed);
     }
     fn snapshot(&self, indices: usize) -> Self::Snapshot {
         StatsView {
             hits: self.hits.load(Ordering::Relaxed),
             misses: self.misses.load(Ordering::Relaxed),
             pushes: self.pushes.load(Ordering::Relaxed),
             reloads: self.reloads.load(Ordering::Relaxed),
             indices,
         }
     }
 }
 impl Metrics for () {
     type Snapshot = ();
     fn record_hit(&self) {}
     fn record_miss(&self) {}
     fn record_push(&self) {}
     fn record_reload(&self) {}
     fn snapshot(&self, _: usize) -> Self::Snapshot {}
 }

added archived/link-git/src/odb/pack.rs

@@ -0,0 +1,138 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     path::{Path, PathBuf},
     sync::atomic::{AtomicUsize, Ordering},
 };
 use git_hash::{oid, ObjectId};
 use git_pack::{data, index};
 use rustc_hash::FxHasher;
 use tracing::warn;
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     #[error("failed to load pack data from {path:?}")]
     pub struct Data {
         pub path: PathBuf,
         pub source: data::header::decode::Error,
     }
     #[derive(Debug, Error)]
     #[error("failed to load pack index from {path:?}")]
     pub struct Index {
         pub path: PathBuf,
         pub source: index::init::Error,
     }
 }
 pub struct Data {
     pub hash: u64,
     hits: AtomicUsize,
     file: data::File,
 }
 impl Data {
     pub fn hit(&self) {
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     pub fn hits(&self) -> usize {
         self.hits.load(Ordering::Relaxed)
     }
     pub fn file(&self) -> &data::File {
         &self.file
     }
 }
 impl AsRef<data::File> for Data {
     fn as_ref(&self) -> &data::File {
         self.file()
     }
 }
 #[derive(Clone, PartialEq, Eq)]
 pub struct Info {
     pub(super) hash: u64,
     pub data_path: PathBuf,
 }
 impl Info {
     pub fn data(&self) -> Result<Data, error::Data> {
         let file = data::File::at(&self.data_path).map_err(|source| error::Data {
             path: self.data_path.clone(),
             source,
         })?;
         Ok(Data {
             hash: self.hash,
             hits: AtomicUsize::new(0),
             file,
         })
     }
 }
 pub struct Index {
     pub info: Info,
     file: index::File,
 }
 impl Index {
     pub fn open(path: impl AsRef<Path>) -> Result<Self, error::Index> {
         let path = path.as_ref();
         let file = index::File::at(path).map_err(|source| error::Index {
             path: path.to_path_buf(),
             source,
         })?;
         let data_path = path.with_extension("pack");
         let hash = {
             let file_name = path
                 .file_name()
                 .expect("must have a file name, we opened it")
                 .to_string_lossy();
             // XXX: inexplicably, gitoxide omits the "pack-" prefix
             let sha_hex = file_name.strip_prefix("pack-").unwrap_or(&file_name);
             match ObjectId::from_hex(&sha_hex.as_bytes()[..40]) {
                 Err(e) => {
                     warn!(
                         "unconventional pack name {:?}, falling back to fxhash: {}",
                         path, e
                     );
                     hash(path)
                 },
                 Ok(oid) => {
                     let mut buf = [0u8; 8];
                     buf.copy_from_slice(&oid.sha1()[..8]);
                     u64::from_be_bytes(buf)
                 },
             }
         };
         let info = Info { hash, data_path };
         Ok(Self { file, info })
     }
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.file.lookup(id).is_some()
     }
     pub fn ofs(&self, id: impl AsRef<oid>) -> Option<u64> {
         self.file
             .lookup(id)
             .map(|idx| self.file.pack_offset_at_index(idx))
     }
 }
 fn hash(p: &Path) -> u64 {
     use std::hash::{Hash as _, Hasher as _};
     let mut hasher = FxHasher::default();
     p.hash(&mut hasher);
     hasher.finish()
 }

added archived/link-git/src/odb/window.rs

@@ -0,0 +1,183 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::Arc;
 use arc_swap::{ArcSwap, Guard};
 use parking_lot::Mutex;
 use super::pack;
 mod metrics;
 pub use metrics::{Metrics, Stats, StatsView};
 /// A threadsafe, shareable cache of packfiles.
 pub trait Cache {
     type Stats;
     fn stats(&self) -> Self::Stats;
     fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data>;
 }
 impl<M, const B: usize, const S: usize> Cache for Fixed<M, B, S>
 where
     M: Metrics,
 {
     type Stats = M::Snapshot;
     fn stats(&self) -> Self::Stats {
         self.stats()
     }
     fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data> {
         self.get(info)
     }
 }
 /// 128 open files
 pub type Small<S> = Fixed<S, 16, 8>;
 /// 512 open files
 pub type Medium<S> = Fixed<S, 32, 16>;
 /// 1024 open files
 pub type Large<S> = Fixed<S, 64, 16>;
 /// 2048 open files
 pub type XLarge<S> = Fixed<S, 128, 16>;
 /// A fixed-size [`Cache`].
 ///
 /// [`Fixed`] is essentially a very simple, fixed-capacity hashtable. When a
 /// pack (data-) file is requested via [`Cache::get`], the file is loaded
 /// (typically `mmap`ed) from disk if it is not already in the cache. Otherwise,
 /// a pointer to the already loaded file is returned. Old entries are replaced
 /// on an approximate LRU basis when the cache becomes full (this means that old
 /// entries are **not** evicted when there is still space).
 ///
 /// The implementation is a somewhat dumbed-down version of JGit's
 /// `WindowCache`. The main differences are that the table buckets are of fixed
 /// size (`SLOTS`), instead of a linked list. This means that the cache does not
 /// allow to (temporarily) commit more entries than its nominal capacity.
 ///
 /// Reading cached values is lock-free and mostly wait-free. Modifications are
 /// guarded by locks on individual buckets; if a cache miss occurs, multiple
 /// threads requesting the same entry will be blocked until one of them
 /// succeeded loading the data and updating the cache. Writers will _not_,
 /// however, contend with readers (unlike `RwLock`).
 ///
 /// This favours usage patterns where different threads tend to request disjoint
 /// sets of packfiles, and of course their hashes colliding relatively
 /// infrequently.
 pub struct Fixed<M, const BUCKETS: usize, const SLOTS: usize> {
     entries: [ArcSwap<[Option<Arc<pack::Data>>; SLOTS]>; BUCKETS],
     locks: [Mutex<()>; BUCKETS],
     stats: M,
 }
 trait AssertSendSync: Send + Sync {}
 impl<M, const B: usize, const S: usize> AssertSendSync for Fixed<M, B, S> where M: Send + Sync {}
 impl<M, const B: usize, const S: usize> AsRef<Fixed<M, B, S>> for Fixed<M, B, S> {
     fn as_ref(&self) -> &Fixed<M, B, S> {
         self
     }
 }
 impl<const B: usize, const S: usize> Default for Fixed<(), B, S> {
     fn default() -> Self {
         Self {
             entries: [(); B].map(|_| ArcSwap::new(Arc::new([(); S].map(|_| None)))),
             locks: [(); B].map(|_| Mutex::new(())),
             stats: (),
         }
     }
 }
 impl<M, const B: usize, const S: usize> Fixed<M, B, S>
 where
     M: Metrics,
 {
     pub fn with_stats(self) -> Fixed<Stats, B, S> {
         self.with_metrics(Stats::default())
     }
     pub fn with_metrics<N: Metrics>(self, m: N) -> Fixed<N, B, S> {
         Fixed {
             entries: self.entries,
             locks: self.locks,
             stats: m,
         }
     }
     pub fn stats(&self) -> M::Snapshot {
         let open_files = self
             .entries
             .iter()
             .map(|bucket| bucket.load().iter().flatten().count())
             .sum();
         self.stats.snapshot(open_files)
     }
     pub fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data> {
         let idx = info.hash as usize % self.entries.len();
         let bucket = self.entries[idx].load();
         for entry in bucket.iter().flatten() {
             if entry.hash == info.hash {
                 self.stats.record_hit();
                 entry.hit();
                 return Ok(Arc::clone(entry));
             }
         }
         drop(bucket);
         self.stats.record_miss();
         // Cache miss, try to load the data file
         let lock = self.locks[idx].lock();
         // Did someone else win the race for the lock?
         let bucket = self.entries[idx].load();
         for entry in bucket.iter().flatten() {
             if entry.hash == info.hash {
                 self.stats.record_hit();
                 entry.hit();
                 return Ok(Arc::clone(entry));
             }
         }
         // No, proceed
         self.stats.record_load();
         let data = Arc::new(info.data()?);
         // Find an empty slot, or swap with the least popular
         let mut access = usize::MAX;
         let mut evict = 0;
         for (i, e) in bucket.iter().enumerate() {
             match e {
                 Some(entry) => {
                     let hits = entry.hits();
                     if hits < access {
                         access = hits;
                         evict = i;
                     }
                 },
                 None => {
                     evict = i;
                     break;
                 },
             }
         }
         let mut entries = Guard::into_inner(bucket);
         {
             // This costs `SLOTS` refcount increments if the slot is currently
             // borrowed.
             let mutti = Arc::make_mut(&mut entries);
             mutti[evict] = Some(Arc::clone(&data));
         }
         self.entries[idx].store(entries);
         drop(lock);
         data.hit();
         Ok(data)
     }
 }

added archived/link-git/src/odb/window/metrics.rs

@@ -0,0 +1,79 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::atomic::{AtomicUsize, Ordering};
 use tracing::trace;
 pub struct StatsView {
     /// Total number of times the requested data was found in the cache.
     pub cache_hits: usize,
     /// Total number of times the requested data was not found in the cache.
     ///
     /// Note that a cache hit can occur after a miss if another thread was
     /// faster to fill in the missing entry. Thus, `cache_hits + cache_misses`
     /// does not necessarily sum up to the number of cache accesses.
     pub cache_misses: usize,
     /// Total number of times a pack file was attempted to be loaded from disk
     /// (incl. failed attempts).
     pub file_loads: usize,
     /// Total number of pack files the cache holds on to.
     pub open_files: usize,
 }
 #[derive(Default)]
 pub struct Stats {
     hits: AtomicUsize,
     miss: AtomicUsize,
     load: AtomicUsize,
 }
 pub trait Metrics {
     type Snapshot;
     fn record_hit(&self);
     fn record_miss(&self);
     fn record_load(&self);
     fn snapshot(&self, open_files: usize) -> Self::Snapshot;
 }
 impl Metrics for Stats {
     type Snapshot = StatsView;
     fn record_hit(&self) {
         trace!("cache hit");
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     fn record_miss(&self) {
         trace!("cache miss");
         self.miss.fetch_add(1, Ordering::Relaxed);
     }
     fn record_load(&self) {
         trace!("pack load");
         self.load.fetch_add(1, Ordering::Relaxed);
     }
     fn snapshot(&self, open_files: usize) -> Self::Snapshot {
         StatsView {
             cache_hits: self.hits.load(Ordering::Relaxed),
             cache_misses: self.miss.load(Ordering::Relaxed),
             file_loads: self.load.load(Ordering::Relaxed),
             open_files,
         }
     }
 }
 impl Metrics for () {
     type Snapshot = ();
     fn record_hit(&self) {}
     fn record_miss(&self) {}
     fn record_load(&self) {}
     fn snapshot(&self, _: usize) -> Self::Snapshot {}
 }

added archived/link-git/src/protocol.rs

@@ -0,0 +1,30 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use bstr::ByteSlice as _;
 use git_protocol::transport::client;
 use versions::Version;
 pub mod fetch;
 pub mod ls;
 pub mod packwriter;
 pub mod take;
 pub mod transport;
 pub mod upload_pack;
 pub use fetch::{fetch, Ref};
 pub use ls::ls_refs;
 pub use packwriter::PackWriter;
 pub use upload_pack::upload_pack;
 pub use git_hash::{oid, ObjectId};
 fn remote_git_version(caps: &client::Capabilities) -> Option<Version> {
     let agent = caps.capability("agent").and_then(|cap| {
         cap.value()
             .and_then(|bs| bs.to_str().map(|s| s.to_owned()).ok())
     })?;
     Version::new(agent.strip_prefix("git/")?)
 }

added archived/link-git/src/protocol/fetch.rs

@@ -0,0 +1,290 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     future::Future,
     io,
     mem,
     pin::Pin,
     sync::{
         atomic::{AtomicBool, Ordering},
         Arc,
     },
     task::{Context, Poll},
 };
 use bstr::{BString, ByteSlice as _};
 use futures_lite::{
     future,
     io::{AsyncBufRead, AsyncRead, AsyncWrite},
 };
 use git_features::progress::{self, Progress};
 use git_protocol::{
     fetch::{response, Action, Arguments, Delegate, DelegateBlocking, LsRefsAction, Response},
     transport::client,
 };
 use once_cell::sync::Lazy;
 use pin_project::{pin_project, pinned_drop};
 use versions::Version;
 pub use git_hash::ObjectId;
 pub use git_protocol::fetch::Ref;
 use super::{packwriter::PackWriter, remote_git_version, transport};
 // Work around `git-upload-pack` not handling namespaces properly,
 //
 // cf. https://lore.kernel.org/git/CD2XNXHACAXS.13J6JTWZPO1JA@schmidt/
 // Fixed in `git.git` 1ab13eb, which should land in 2.34
 //
 // Based on testing with git 2.25.1 in Ubuntu 20.04, this workaround is
 // not needed. Hence the checked version is lowered to 2.25.0.
 fn must_namespace_want_ref(caps: &client::Capabilities) -> bool {
     static FIXED_AFTER: Lazy<Version> = Lazy::new(|| Version::new("2.25.0").unwrap());
     remote_git_version(caps)
         .map(|version| version <= *FIXED_AFTER)
         .unwrap_or(false)
 }
 #[derive(Debug)]
 pub struct Options {
     /// The remote (logical) repository to fetch from.
     ///
     /// Normally, this is the path to a repo on the remote side (eg.
     /// `/git.git`). `radicle-link` serves only a single namespaced repo, so
     /// this value should be the name of a namespace.
     pub repo: BString,
     /// [Extra Parameters][extra] to send with the initial transport header.
     ///
     /// [extra]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt#n52
     pub extra_params: Vec<(String, Option<String>)>,
     /// [`ObjectId`]s to send as `want` lines.
     pub wants: Vec<ObjectId>,
     /// [`ObjectId`]s to send as `have` lines.
     pub haves: Vec<ObjectId>,
     /// Known refs to ask the server to include in the packfile.
     pub want_refs: Vec<BString>,
 }
 /// Result of a succesful [`fetch`].
 #[derive(Debug)]
 pub struct Outputs<T> {
     /// The `wanted-refs` as acknowledged by the server.
     pub wanted_refs: Vec<Ref>,
     /// If a packfile was received successfully, some info about it.
     pub pack: Option<T>,
 }
 impl<T> Default for Outputs<T> {
     fn default() -> Self {
         Self {
             wanted_refs: Vec::new(),
             pack: None,
         }
     }
 }
 /// [`Delegate`] driving the fetch end of the [pack protocol].
 ///
 /// [pack protocol]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt
 pub struct Fetch<P, O> {
     opt: Options,
     pack_writer: P,
     out: Outputs<O>,
     need_namespaced_want_ref: bool,
 }
 impl<P, O> Fetch<P, O> {
     pub fn new(opt: Options, pack_writer: P) -> Self {
         Self {
             opt,
             pack_writer,
             out: Outputs::default(),
             need_namespaced_want_ref: false,
         }
     }
     pub fn outputs(&self) -> &Outputs<O> {
         &self.out
     }
     pub fn take_outputs(&mut self) -> Outputs<O> {
         mem::take(&mut self.out)
     }
 }
 impl<P: PackWriter> DelegateBlocking for Fetch<P, P::Output> {
     fn handshake_extra_parameters(&self) -> Vec<(String, Option<String>)> {
         self.opt.extra_params.clone()
     }
     fn prepare_ls_refs(
         &mut self,
         _: &client::Capabilities,
         _: &mut Vec<BString>,
         _: &mut Vec<(&str, Option<&str>)>,
     ) -> io::Result<LsRefsAction> {
         Ok(LsRefsAction::Skip)
     }
     fn prepare_fetch(
         &mut self,
         _: git_protocol::transport::Protocol,
         caps: &client::Capabilities,
         _: &mut Vec<(&str, Option<&str>)>,
         _: &[Ref],
     ) -> io::Result<Action> {
         if !self.opt.want_refs.is_empty() && !remote_supports_ref_in_want(caps) {
             return Err(io::Error::new(
                 io::ErrorKind::Unsupported,
                 "`want-ref`s given, but server does not support `ref-in-want`",
             ));
         }
         if self.opt.wants.is_empty() && self.opt.want_refs.is_empty() {
             return Err(io::Error::new(
                 io::ErrorKind::InvalidData,
                 "`fetch` is empty",
             ));
         }
         self.need_namespaced_want_ref = must_namespace_want_ref(caps);
         Ok(Action::Continue)
     }
     fn negotiate(
         &mut self,
         _: &[Ref],
         args: &mut Arguments,
         _: Option<&Response>,
     ) -> io::Result<Action> {
         for oid in &self.opt.wants {
             args.want(oid);
         }
         for oid in &self.opt.haves {
             args.have(oid)
         }
         for name in &self.opt.want_refs {
             if self.need_namespaced_want_ref {
                 let want_ref = format!("refs/namespaces/{}/{}", self.opt.repo, name);
                 args.want_ref(BString::from(want_ref).as_bstr());
             } else {
                 args.want_ref(name.as_bstr());
             }
         }
         // send done, as we don't bother with further negotiation
         Ok(Action::Cancel)
     }
 }
 #[async_trait(?Send)]
 impl<P: PackWriter> Delegate for Fetch<P, P::Output> {
     async fn receive_pack(
         &mut self,
         pack: impl AsyncBufRead + Unpin + 'async_trait,
         prog: impl Progress,
         _: &[Ref],
         resp: &Response,
     ) -> io::Result<()> {
         // Strip any namespaces leaked by the other end due to workarounds
         let namespace = format!("refs/namespaces/{}/", self.opt.repo);
         self.out.wanted_refs.extend(resp.wanted_refs().iter().map(
             |response::WantedRef { id, path }| {
                 Ref::Direct {
                     path: path
                         .strip_prefix(namespace.as_bytes())
                         .map(BString::from)
                         .unwrap_or_else(|| path.clone()),
                     object: *id,
                 }
             },
         ));
         let out = self.pack_writer.write_pack(pack, prog)?;
         self.out.pack = Some(out);
         Ok(())
     }
 }
 /// Future created by the [`fetch`] function.
 ///
 /// Ensures that a running inner [`PackWriter`] is cancelled when the
 /// [`Fetching`] future is dropped without also dropping the [`AsyncRead`] data
 /// source.
 #[pin_project(PinnedDrop)]
 struct Fetching<T> {
     stop: Arc<AtomicBool>,
     #[pin]
     task: T,
 }
 #[pinned_drop]
 impl<T> PinnedDrop for Fetching<T> {
     fn drop(self: Pin<&mut Self>) {
         self.stop.store(true, Ordering::Release)
     }
 }
 impl<T> Future for Fetching<T>
 where
     T: Future,
 {
     type Output = T::Output;
     fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
         self.project().task.poll(cx)
     }
 }
 pub fn fetch<B, P, R, W>(
     opt: Options,
     build_pack_writer: B,
     recv: R,
     send: W,
 ) -> impl Future<Output = io::Result<Outputs<P::Output>>>
 where
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
     R: AsyncRead + Unpin + Send + 'static,
     W: AsyncWrite + Unpin + Send + 'static,
 {
     let stop = Arc::new(AtomicBool::new(false));
     let task = blocking::unblock({
         let mut conn = transport::Stateless::new(opt.repo.clone(), recv, send);
         let pack_writer = build_pack_writer(Arc::clone(&stop));
         move || {
             let mut delegate = Fetch::new(opt, pack_writer);
             future::block_on(git_protocol::fetch(
                 &mut conn,
                 &mut delegate,
                 |_| unreachable!("credentials helper requested"),
                 progress::Discard,
                 git_protocol::FetchConnection::AllowReuse,
             ))
             .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
             Ok(delegate.out)
         }
     });
     Fetching { stop, task }
 }
 fn remote_supports_ref_in_want(caps: &client::Capabilities) -> bool {
     caps.capability("fetch")
         .and_then(|cap| cap.supports("ref-in-want"))
         .unwrap_or(false)
 }

added archived/link-git/src/protocol/ls.rs

@@ -0,0 +1,151 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::io;
 use bstr::{BString, ByteVec as _};
 use futures_lite::io::{AsyncBufRead, AsyncRead, AsyncWrite};
 use git_features::progress::{self, Progress};
 use git_protocol::{
     fetch::{Action, Arguments, Delegate, DelegateBlocking, LsRefsAction, Response},
     transport::client,
 };
 use once_cell::sync::Lazy;
 use versions::Version;
 pub use git_protocol::fetch::Ref;
 use super::{remote_git_version, transport};
 // Work around `git-upload-pack` not handling namespaces properly
 //
 // cf. https://lore.kernel.org/git/pMV5dJabxOBTD8kJBaPuWK0aS6OJhRQ7YFGwfhPCeSJEbPDrIFBza36nXBCgUCeUJWGmpjPI1rlOGvZJEh71Ruz4SqljndUwOCoBUDRHRDU=@eagain.st/
 //
 // Based on testing with git 2.25.1 in Ubuntu 20.04, this workaround is
 // not needed. Hence the checked version is lowered to 2.25.0.
 fn must_namespace(caps: &client::Capabilities) -> bool {
     static MIN_GIT_VERSION_NAMESPACES: Lazy<Version> =
         Lazy::new(|| Version::new("2.25.0").unwrap());
     remote_git_version(caps)
         .map(|version| version < *MIN_GIT_VERSION_NAMESPACES)
         .unwrap_or(false)
 }
 #[derive(Debug)]
 pub struct Options {
     /// The remote (logical) repository to fetch from.
     ///
     /// Normally, this is the path to a repo on the remote side (eg.
     /// `/git.git`). `radicle-link` serves only a single namespaced repo, so
     /// this value should be the name of a namespace.
     pub repo: BString,
     /// [Extra Parameters][extra] to send with the initial transport header.
     ///
     /// [extra]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt#n52
     pub extra_params: Vec<(String, Option<String>)>,
     /// Prefixes of refs to ask the server to advertise via `ls-refs`.
     ///
     /// If the [`Vec`] is empty, the server is asked to return all refs it knows
     /// about. Otherwise, the server is asked to only return refs matching
     /// the given prefixes.
     pub ref_prefixes: Vec<BString>,
 }
 /// [`Delegate`] for running a stateless `ls-refs` command.
 pub struct LsRefs {
     opt: Options,
     out: Vec<Ref>,
 }
 impl LsRefs {
     pub fn new(opt: Options) -> Self {
         Self {
             opt,
             out: Vec::new(),
         }
     }
 }
 impl DelegateBlocking for LsRefs {
     fn handshake_extra_parameters(&self) -> Vec<(String, Option<String>)> {
         self.opt.extra_params.clone()
     }
     fn prepare_ls_refs(
         &mut self,
         caps: &client::Capabilities,
         args: &mut Vec<BString>,
         _: &mut Vec<(&str, Option<&str>)>,
     ) -> io::Result<LsRefsAction> {
         let must_namespace = must_namespace(caps);
         for prefix in &self.opt.ref_prefixes {
             let mut arg = BString::from("ref-prefix ");
             if must_namespace {
                 arg.push_str("refs/namespaces/");
                 arg.push_str(&self.opt.repo);
                 arg.push_char('/');
             }
             arg.push_str(prefix);
             args.push(arg)
         }
         Ok(LsRefsAction::Continue)
     }
     fn prepare_fetch(
         &mut self,
         _: git_protocol::transport::Protocol,
         _: &client::Capabilities,
         _: &mut Vec<(&str, Option<&str>)>,
         refs: &[Ref],
     ) -> io::Result<Action> {
         self.out.extend_from_slice(refs);
         Ok(Action::Cancel)
     }
     fn negotiate(
         &mut self,
         _: &[Ref],
         _: &mut Arguments,
         _: Option<&Response>,
     ) -> io::Result<Action> {
         unreachable!("`negotiate` called even though no `fetch` command was sent")
     }
 }
 #[async_trait(?Send)]
 impl Delegate for LsRefs {
     async fn receive_pack(
         &mut self,
         _: impl AsyncBufRead + Unpin + 'async_trait,
         _: impl Progress,
         _: &[Ref],
         _: &Response,
     ) -> io::Result<()> {
         unreachable!("`receive_pack` called even though no `fetch` command was sent")
     }
 }
 pub async fn ls_refs<R, W>(opt: Options, recv: R, send: W) -> io::Result<Vec<Ref>>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let mut conn = transport::Stateless::new(opt.repo.clone(), recv, send);
     let mut delegate = LsRefs::new(opt);
     git_protocol::fetch(
         &mut conn,
         &mut delegate,
         |_| unreachable!("credentials helper requested"),
         progress::Discard,
         git_protocol::FetchConnection::AllowReuse,
     )
     .await
     .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
     Ok(delegate.out)
 }

added archived/link-git/src/protocol/packwriter.rs

@@ -0,0 +1,271 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     io,
     path::{Path, PathBuf},
     sync::{
         atomic::{AtomicBool, Ordering},
         Arc,
     },
 };
 use futures_lite::io::{AsyncBufRead, BlockOn};
 use git_features::progress::Progress;
 use git_hash::ObjectId;
 use git_odb::{self as odb, pack};
 use super::take::TryTake;
 #[cfg(feature = "git2")]
 pub use libgit::Libgit;
 /// What to do with the `packfile` response.
 ///
 /// _This is mostly the same as [`git_protocol::fetch::Delegate`], but without
 /// incurring the [`git_protocol::fetch::DelegateBlocking`] super-trait
 /// constraint. We can simply make [`crate::protocol::fetch::Fetch`] parametric
 /// over the packfile sink._
 pub trait PackWriter {
     type Output;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         progress: impl Progress,
     ) -> io::Result<Self::Output>;
 }
 #[derive(Clone, Copy, Debug)]
 pub struct Options {
     /// How many threads the packfile indexer is allowed to spawn. `None` means
     /// unlimited.
     pub max_indexer_threads: Option<usize>,
     /// The maximum size in bytes of the packfile.
     ///
     /// If the remote sends a larger file, the transfer will be aborted.
     pub max_pack_bytes: u64,
 }
 impl Default for Options {
     fn default() -> Self {
         Self {
             max_indexer_threads: Some(1),
             max_pack_bytes: u64::MAX,
         }
     }
 }
 #[cfg(feature = "git2")]
 pub mod libgit {
     use super::*;
     #[derive(Clone, Copy, Debug)]
     pub struct PackReceived {
         pub objects: usize,
         pub local_objects: usize,
         pub deltas: usize,
     }
     impl From<git2::Progress<'_>> for PackReceived {
         fn from(p: git2::Progress<'_>) -> Self {
             Self {
                 objects: p.indexed_objects(),
                 local_objects: p.local_objects(),
                 deltas: p.indexed_deltas(),
             }
         }
     }
     pub struct Libgit {
         opt: Options,
         repo: git2::Repository,
         stop: Arc<AtomicBool>,
     }
     impl Libgit {
         pub fn new(opt: Options, repo: git2::Repository, stop: Arc<AtomicBool>) -> Self {
             Self { opt, repo, stop }
         }
         fn guard_cancelled(&self) -> io::Result<()> {
             if self.stop.load(Ordering::Acquire) {
                 Err(io::Error::new(io::ErrorKind::Interrupted, "cancelled"))
             } else {
                 Ok(())
             }
         }
     }
     impl PackWriter for Libgit {
         type Output = Option<PackReceived>;
         fn write_pack(
             &self,
             pack: impl AsyncBufRead + Unpin,
             _: impl Progress,
         ) -> io::Result<Self::Output> {
             let mut out = None;
             let odb = self.repo.odb().map_err(io_error)?;
             let mut writer = odb.packwriter().map_err(io_error)?;
             self.guard_cancelled()?;
             io::copy(
                 &mut BlockOn::new(TryTake::new(pack, self.opt.max_pack_bytes)),
                 &mut writer,
             )?;
             self.guard_cancelled()?;
             writer
                 .progress(|p| {
                     out = Some(p.to_owned());
                     true
                 })
                 .commit()
                 .map(|_| ())
                 .map_err(io_error)?;
             // Convince borrowchk that `out` can not possibly be borrowed anymore
             drop(writer);
             Ok(out.map(Into::into))
         }
     }
     fn io_error(e: git2::Error) -> io::Error {
         io::Error::new(io::ErrorKind::Other, e)
     }
 }
 pub type PackReceived = pack::bundle::write::Outcome;
 /// A lookup function to help "thicken" thin packs by finding missing base
 /// objects.
 ///
 /// The impl provided for [`odb::linked::Store`] does not use any pack caching.
 pub trait Thickener {
     fn find_object<'a>(&self, id: ObjectId, buf: &'a mut Vec<u8>)
         -> Option<pack::data::Object<'a>>;
 }
 impl Thickener for odb::linked::Store {
     fn find_object<'a>(
         &self,
         id: ObjectId,
         buf: &'a mut Vec<u8>,
     ) -> Option<pack::data::Object<'a>> {
         use git_odb::FindExt as _;
         self.find(id, buf, &mut pack::cache::Never).ok()
     }
 }
 /// A factory spewing out new [`Thickener`]s with static lifetimes.
 ///
 /// `gitoxide` doesn't currently allow us to initialise thickening lazily (the
 /// pack file may not be thin after all), but requires a static lookup function.
 /// Instead of initialising a new [`odb::linked::Store`] for every pack stream,
 /// users may share a pre-initialised object database provided appropriate
 /// thread safety measures.
 pub trait BuildThickener {
     type Error: std::error::Error + Send + Sync + 'static;
     type Thick: Thickener + 'static;
     fn build_thickener(&self) -> Result<Self::Thick, Self::Error>;
 }
 pub struct StandardThickener {
     git_dir: PathBuf,
 }
 impl StandardThickener {
     pub fn new(git_dir: impl Into<PathBuf>) -> Self {
         let git_dir = git_dir.into();
         Self { git_dir }
     }
 }
 impl BuildThickener for StandardThickener {
     type Error = odb::linked::init::Error;
     type Thick = odb::linked::Store;
     fn build_thickener(&self) -> Result<Self::Thick, Self::Error> {
         odb::linked::Store::at(self.git_dir.join("objects"))
     }
 }
 /// The default [`PackWriter`].
 ///
 /// Writes the packfile into the given output directory, along with a v2
 /// index. The packfile is verified.
 pub struct Standard<F> {
     git_dir: PathBuf,
     opt: Options,
     thick: F,
     stop: Arc<AtomicBool>,
 }
 impl<F> Standard<F> {
     pub fn new(git_dir: impl AsRef<Path>, opt: Options, thick: F, stop: Arc<AtomicBool>) -> Self {
         Self {
             git_dir: git_dir.as_ref().to_owned(),
             opt,
             thick,
             stop,
         }
     }
 }
 impl<F> Drop for Standard<F> {
     fn drop(&mut self) {
         self.stop.store(true, Ordering::Release);
     }
 }
 impl<F: BuildThickener> PackWriter for Standard<F> {
     type Output = PackReceived;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         prog: impl Progress,
     ) -> io::Result<Self::Output> {
         use pack::{bundle::write::Options, data::input::Mode, index::Version, Bundle};
         let opts = Options {
             thread_limit: self.opt.max_indexer_threads,
             index_kind: Version::V2,
             iteration_mode: Mode::Verify,
         };
         let thickener = self
             .thick
             .build_thickener()
             .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
         Bundle::write_to_directory(
             BlockOn::new(TryTake::new(pack, self.opt.max_pack_bytes)),
             Some(self.git_dir.join("objects").join("pack")),
             prog,
             &self.stop,
             Some(Box::new(move |oid, buf| thickener.find_object(oid, buf))),
             opts,
         )
         .map_err(|e| io::Error::new(io::ErrorKind::Other, e))
     }
 }
 /// No-op [`PackWriter`] which just drains the input.
 pub struct Discard;
 impl PackWriter for Discard {
     type Output = u64;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         _: impl Progress,
     ) -> io::Result<Self::Output> {
         io::copy(&mut BlockOn::new(pack), &mut io::sink())
     }
 }

added archived/link-git/src/protocol/take.rs

@@ -0,0 +1,76 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     io,
     pin::Pin,
     task::{Context, Poll},
 };
 use futures_lite::io::{AsyncBufRead, AsyncRead};
 /// Like [`futures_lite::io::Take`], but returns an error if and when the
 /// `limit` is exceeded.
 ///
 /// Note that, unlike [`futures_lite::io::Take`], if a single poll reads past
 /// the limit, the excess bytes are _not_ discarded. Instead, an error is
 /// returned on the next poll.
 pub struct TryTake<R> {
     limit: u64,
     inner: R,
 }
 impl<R> TryTake<R> {
     pub fn new(inner: R, limit: u64) -> Self {
         Self { limit, inner }
     }
 }
 impl<R> AsyncRead for TryTake<R>
 where
     R: AsyncRead + Unpin,
 {
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context,
         buf: &mut [u8],
     ) -> Poll<Result<usize, io::Error>> {
         if self.limit == 0 {
             return Poll::Ready(Err(io::Error::new(
                 io::ErrorKind::Other,
                 "max input size exceeded",
             )));
         }
         let this = self.get_mut();
         Pin::new(&mut this.inner).poll_read(cx, buf).map(|ready| {
             if let Ok(siz) = ready {
                 this.limit = this.limit.saturating_sub(siz as u64);
             }
             ready
         })
     }
 }
 impl<R> AsyncBufRead for TryTake<R>
 where
     R: AsyncBufRead + Unpin,
 {
     fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Result<&[u8], io::Error>> {
         if self.limit == 0 {
             return Poll::Ready(Err(io::Error::new(
                 io::ErrorKind::Other,
                 "max input size exceeded",
             )));
         }
         Pin::new(&mut self.get_mut().inner).poll_fill_buf(cx)
     }
     fn consume(self: Pin<&mut Self>, amt: usize) {
         Pin::new(&mut self.get_mut().inner).consume(amt)
     }
 }

added archived/link-git/src/protocol/transport.rs

@@ -0,0 +1,84 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use bstr::BString;
 use futures_lite::io::{AsyncRead, AsyncWrite};
 use git_protocol::transport::{
     client::{
         self,
         git::{ConnectMode, Connection},
         SetServiceResponse,
         Transport,
         TransportWithoutIO,
     },
     Protocol,
     Service,
 };
 pub struct Stateless<R, W> {
     inner: Connection<R, W>,
 }
 impl<R, W> Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     pub fn new(repo: BString, recv: R, send: W) -> Self {
         let url = format!("rad://{repo}");
         let inner = Connection::new(
             recv,
             send,
             Protocol::V2,
             repo,
             None::<(String, Option<u16>)>,
             ConnectMode::Daemon,
         )
         .custom_url(Some(url));
         Self { inner }
     }
 }
 impl<R, W> TransportWithoutIO for Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     fn request(
         &mut self,
         write_mode: client::WriteMode,
         on_into_read: client::MessageKind,
     ) -> Result<client::RequestWriter<'_>, client::Error> {
         self.inner.request(write_mode, on_into_read)
     }
     fn to_url(&self) -> String {
         self.inner.to_url()
     }
     fn supported_protocol_versions(&self) -> &[Protocol] {
         &[Protocol::V2]
     }
     fn connection_persists_across_multiple_requests(&self) -> bool {
         false
     }
 }
 #[async_trait(?Send)]
 impl<R, W> Transport for Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     async fn handshake<'a>(
         &mut self,
         service: Service,
         extra_parameters: &'a [(&'a str, Option<&'a str>)],
     ) -> Result<SetServiceResponse<'_>, client::Error> {
         self.inner.handshake(service, extra_parameters).await
     }
 }

added archived/link-git/src/protocol/upload_pack.rs

@@ -0,0 +1,238 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{future::Future, io, path::Path, process::ExitStatus, str::FromStr};
 use async_process::{Command, Stdio};
 use futures_lite::io::{copy, AsyncBufReadExt as _, AsyncRead, AsyncWrite, BufReader};
 use futures_util::try_join;
 use git_packetline::{self as packetline, PacketLineRef};
 use once_cell::sync::Lazy;
 use versions::Version;
 mod legacy;
 #[derive(Debug, PartialEq, Eq)]
 pub struct Header {
     pub path: String,
     pub host: Option<(String, Option<u16>)>,
     pub extra: Vec<(String, Option<String>)>,
 }
 impl FromStr for Header {
     type Err = &'static str;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let mut parts = s
             .strip_prefix("git-upload-pack ")
             .ok_or("unsupported service")?
             .split_terminator('\0');
         let path = parts.next().ok_or("missing path").and_then(|path| {
             if path.is_empty() {
                 Err("empty path")
             } else {
                 Ok(path.to_owned())
             }
         })?;
         let host = match parts.next() {
             None | Some("") => None,
             Some(host) => match host.strip_prefix("host=") {
                 None => return Err("invalid host"),
                 Some(host) => match host.split_once(':') {
                     None => Some((host.to_owned(), None)),
                     Some((host, port)) => {
                         let port = port.parse::<u16>().or(Err("invalid port"))?;
                         Some((host.to_owned(), Some(port)))
                     },
                 },
             },
         };
         let extra = parts
             .skip_while(|part| part.is_empty())
             .map(|part| match part.split_once('=') {
                 None => (part.to_owned(), None),
                 Some((k, v)) => (k.to_owned(), Some(v.to_owned())),
             })
             .collect();
         Ok(Self { path, host, extra })
     }
 }
 pub async fn upload_pack<R, W>(
     git_dir: impl AsRef<Path>,
     recv: R,
     mut send: W,
 ) -> io::Result<(Header, impl Future<Output = io::Result<ExitStatus>>)>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let mut recv = BufReader::new(recv);
     let header: Header = match recv.fill_buf().await?.first() {
         // legacy clients don't send a proper pktline header :(
         Some(b'g') => {
             let mut buf = String::with_capacity(256);
             recv.read_line(&mut buf).await?;
             buf.parse().map_err(invalid_data)?
         },
         Some(_) => {
             let mut pktline = packetline::StreamingPeekableIter::new(recv, &[]);
             let pkt = pktline
                 .read_line()
                 .await
                 .ok_or_else(|| invalid_data("missing header"))?
                 .map_err(invalid_data)?
                 .map_err(invalid_data)?;
             let hdr = match pkt {
                 PacketLineRef::Data(data) => std::str::from_utf8(data)
                     .map_err(invalid_data)?
                     .parse()
                     .map_err(invalid_data),
                 _ => Err(invalid_data("not a header packet")),
             }?;
             recv = pktline.into_inner();
             hdr
         },
         None => {
             return Err(io::Error::new(
                 io::ErrorKind::UnexpectedEof,
                 "expected header",
             ))
         },
     };
     let namespace = header
         .path
         // legacy clients redundantly send a full URN
         .strip_prefix("rad:git:")
         .map(ToOwned::to_owned)
         .unwrap_or_else(|| header.path.clone());
     let protocol_version = header
         .extra
         .iter()
         .find_map(|kv| match kv {
             (ref k, Some(v)) if k == "version" => {
                 let version = match v.as_str() {
                     "2" => 2,
                     "1" => 1,
                     _ => 0,
                 };
                 Some(version)
             },
             _ => None,
         })
         .unwrap_or(0);
     // legacy
     let stateless_ls = header.extra.iter().any(|(k, _)| k == "ls");
     let fut = async move {
         if protocol_version < 2 {
             if stateless_ls {
                 return legacy::advertise_refs(git_dir, &namespace, recv, send).await;
             }
         } else {
             advertise_capabilities(&mut send).await?;
         }
         let mut child = {
             let mut cmd = Command::new("git");
             cmd.current_dir(git_dir)
                 .env_clear()
                 .envs(
                     std::env::vars()
                         .filter(|(key, _)| key == "PATH" || key.starts_with("GIT_TRACE")),
                 )
                 .env("GIT_PROTOCOL", format!("version={protocol_version}"))
                 .env("GIT_NAMESPACE", namespace)
                 .args([
                     "-c",
                     "uploadpack.allowanysha1inwant=true",
                     "-c",
                     "uploadpack.allowrefinwant=true",
                     "-c",
                     "lsrefs.unborn=ignore",
                     "upload-pack",
                     "--strict",
                     "--stateless-rpc",
                     ".",
                 ])
                 .stdout(Stdio::piped())
                 .stdin(Stdio::piped())
                 .stderr(Stdio::inherit())
                 .kill_on_drop(true)
                 .reap_on_drop(true)
                 .spawn()?
         };
         let mut stdin = child.stdin.take().unwrap();
         let mut stdout = child.stdout.take().unwrap();
         try_join!(
             copy(&mut recv, &mut stdin),
             copy(&mut stdout, &mut send),
             child.status(),
         )
         .map(|(_, _, status)| status)
     };
     Ok((header, fut))
 }
 async fn advertise_capabilities<W>(mut send: W) -> io::Result<()>
 where
     W: AsyncWrite + Unpin,
 {
     // Thou shallt not upgrade your `git` installation while a link instance is
     // running!
     static GIT_VERSION: Lazy<Version> = Lazy::new(|| git_version().unwrap());
     static AGENT: Lazy<Vec<u8>> = Lazy::new(|| format!("agent=git/{}", *GIT_VERSION).into_bytes());
     static CAPABILITIES: Lazy<[&[u8]; 4]> = Lazy::new(|| {
         [
             b"version 2",
             AGENT.as_slice(),
             b"object-format=sha1",
             b"fetch=ref-in-want",
         ]
     });
     for cap in *CAPABILITIES {
         packetline::encode::text_to_write(cap, &mut send).await?;
     }
     packetline::encode::flush_to_write(&mut send).await?;
     Ok(())
 }
 fn git_version() -> io::Result<Version> {
     let out = std::process::Command::new("git")
         .arg("--version")
         .output()?;
     if !out.status.success() {
         return Err(io::Error::new(
             io::ErrorKind::Other,
             "failed to read `git` version",
         ));
     }
     // parse: git version 2.30.1 <other optional tokens>
     out.stdout
         .split(|x| x == &b' ')
         .nth(2)
         .and_then(|s| {
             let s = std::str::from_utf8(s).ok()?;
             Version::new(s.trim())
         })
         .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "failed to parse `git` version"))
 }
 fn invalid_data<E>(inner: E) -> io::Error
 where
     E: Into<Box<dyn std::error::Error + Sync + Send>>,
 {
     io::Error::new(io::ErrorKind::InvalidData, inner)
 }

added archived/link-git/src/protocol/upload_pack/legacy.rs

@@ -0,0 +1,102 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 // Copyright © 2021      The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{io, path::Path, process::ExitStatus};
 use async_process::{Command, Stdio};
 use futures_lite::io::{copy, AsyncRead, AsyncReadExt as _, AsyncWrite, AsyncWriteExt as _};
 use futures_util::try_join;
 use git_ref::{
     file::{Store as Refdb, WriteReflog},
     FullName,
     Reference,
 };
 pub(super) async fn advertise_refs<R, W>(
     git_dir: impl AsRef<Path>,
     namespace: &str,
     mut recv: R,
     mut send: W,
 ) -> io::Result<ExitStatus>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let unhide = blocking::unblock({
         let git_dir = git_dir.as_ref().to_path_buf();
         let prefix = Path::new("refs")
             .join("namespaces")
             .join(namespace)
             .join("refs");
         move || -> io::Result<Vec<FullName>> {
             let refdb = Refdb::at(git_dir, WriteReflog::Disable);
             let packed = refdb
                 .packed_buffer()
                 .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
             let refs = refdb
                 .iter_prefixed(packed.as_ref(), prefix)?
                 .filter_map(|r| r.ok().map(|Reference { name, .. }| name))
                 .filter(|name| {
                     const PATTERN: &[u8] = b"rad/ids/any";
                     const SEPARAT: u8 = b'/';
                     name.as_bstr()
                         .rsplit(|b| b == &SEPARAT)
                         .zip(PATTERN.rsplit(|b| b == &SEPARAT))
                         .skip(1)
                         .all(|(a, b)| a == b)
                 })
                 .collect::<Vec<_>>();
             Ok(refs)
         }
     })
     .await?;
     let mut child = {
         let mut cmd = Command::new("git");
         cmd.current_dir(git_dir)
             .env_clear()
             .envs(std::env::vars().filter(|(key, _)| key == "PATH" || key.starts_with("GIT_TRACE")))
             .arg("-c")
             .arg("uploadpack.hiderefs=refs/")
             .arg("-c")
             .arg(format!("uploadpack.hiderefs=!refs/namespaces/{namespace}",));
         for r in unhide {
             cmd.arg("-c")
                 .arg(format!("uploadpack.hiderefs=!{}", r.as_bstr()));
         }
         cmd.args([
             "upload-pack",
             "--strict",
             "--timeout=5",
             "--stateless-rpc",
             "--advertise-refs",
             ".",
         ])
         .stdout(Stdio::piped())
         .stderr(Stdio::inherit())
         .kill_on_drop(true)
         .reap_on_drop(true)
         .spawn()?
     };
     let mut stdout = child.stdout.take().unwrap();
     const HEADER: &[u8] = b"001e# service=git-upload-pack\n0000";
     send.write_all(HEADER).await?;
     let status = try_join!(copy(&mut stdout, &mut send), child.status()).map(|x| x.1);
     // Read one byte off the read stream to ensure it is driven to completion
     // (we expect EOF immediately). Failure to do so may cause resource leaks.
     //
     // Cf. 900b6cf6 (replication: Ensure git stream is closed, 2021-04-26)
     let mut buf = [0; 1];
     recv.read(&mut buf).await?;
     status
 }

added archived/link-git/src/refs.rs

@@ -0,0 +1,7 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 pub mod db;
 pub use git_ref::*;

added archived/link-git/src/refs/db.rs

@@ -0,0 +1,269 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     collections::BTreeSet,
     convert::TryInto,
     io,
     path::{Path, PathBuf},
     sync::Arc,
     time::{Duration, SystemTime},
 };
 use git_ref::{
     file::{self, iter::LooseThenPacked, Transaction, WriteReflog},
     packed,
     FullName,
     PartialNameRef,
     Reference,
     Target,
 };
 use parking_lot::RwLock;
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     pub enum Open {
         #[error("failed to take a snapshot of packed-refs")]
         Snapshot(#[from] Snapshot),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Snapshot {
         #[error("failed to lock packed-refs")]
         Lock(#[from] git_lock::acquire::Error),
         #[error("failed to open packed-refs")]
         Open(#[from] packed::buffer::open::Error),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Follow {
         #[error("cyclic symref: {0:?}")]
         Cycle(FullName),
         #[error("reference {0:?} not found")]
         NotFound(FullName),
         #[error("max symref depth {0} exceeded")]
         DepthLimitExceeded(usize),
         #[error(transparent)]
         Find(#[from] file::find::Error),
     }
 }
 /// Threadsafe refdb with shareable `packed-refs` memory buffer.
 ///
 /// Packed refs are a delicate business: they are written by an external
 /// process, [`git-pack-refs`], _or_ when a packed ref is deleted. It may also
 /// be that no `packed-refs` currently exist.
 ///
 /// The only way we can be certain to operate on a consistent view of what is
 /// committed to disk is to check if the `packed-refs` file has changed since we
 /// last read it. This would be quite expensive to do for small operations.
 /// Thus, the caller is responsible for determining just how much they can
 /// afford to see possibly out-of-date data: the [`Refdb::snapshot`] method
 /// checks if the previously loaded `packed-refs` appear to be out-of-date, and
 /// reloads them if necessary. The resulting [`Snapshot`] contains a pointer to
 /// an immutable memory buffer of the packed refs which can be shared between
 /// threads, or cloned.
 ///
 /// [`git-pack-refs`]: https://git-scm.com/docs/git-pack-refs
 #[derive(Clone)]
 pub struct Refdb {
     store: file::Store,
     packed: Arc<RwLock<Option<Packed>>>,
 }
 impl Refdb {
     pub fn open(git_dir: impl Into<PathBuf>) -> Result<Self, error::Open> {
         let store = file::Store::at(git_dir, WriteReflog::Normal);
         let packed = Arc::new(RwLock::new(Packed::open(store.packed_refs_path())?));
         Ok(Self { store, packed })
     }
     pub fn snapshot(&self) -> Result<Snapshot, error::Snapshot> {
         let read = self.packed.read();
         match &*read {
             None => {
                 drop(read);
                 // always modified, because it was None and now is Some
                 self.reload(|_| true)
             },
             Some(packed) => {
                 if packed.is_modified()? {
                     let mtime = packed.mtime;
                     drop(read);
                     // we don't care what the mtime is, only that we have a
                     // different value than before
                     self.reload(|packed1| packed1.mtime != mtime)
                 } else {
                     Ok(Snapshot {
                         store: self.store.clone(),
                         packed: Some(packed.buf.clone()),
                     })
                 }
             },
         }
     }
     fn reload<F>(&self, modified_while_blocked: F) -> Result<Snapshot, error::Snapshot>
     where
         F: FnOnce(&Packed) -> bool,
     {
         let mut write = self.packed.write();
         if let Some(packed) = &*write {
             if modified_while_blocked(packed) {
                 return Ok(Snapshot {
                     store: self.store.clone(),
                     packed: Some(packed.buf.clone()),
                 });
             }
         }
         match Packed::open(self.store.packed_refs_path())? {
             Some(packed) => {
                 let buf = packed.buf.clone();
                 *write = Some(packed);
                 Ok(Snapshot {
                     store: self.store.clone(),
                     packed: Some(buf),
                 })
             },
             None => {
                 *write = None;
                 Ok(Snapshot {
                     store: self.store.clone(),
                     packed: None,
                 })
             },
         }
     }
 }
 #[derive(Clone)]
 pub struct Snapshot {
     store: file::Store,
     packed: Option<Arc<packed::Buffer>>,
 }
 impl Snapshot {
     pub fn find<'a, N, E>(&self, name: N) -> Result<Option<Reference>, file::find::Error>
     where
         N: TryInto<PartialNameRef<'a>, Error = E>,
         file::find::Error: From<E>,
     {
         self.store.try_find(name, self.packed.as_deref())
     }
     pub fn transaction(&self) -> Transaction {
         self.store.transaction()
     }
     pub fn iter(&self, prefix: Option<impl AsRef<Path>>) -> io::Result<LooseThenPacked> {
         let packed = self.packed.as_deref();
         match prefix {
             None => self.store.iter(packed),
             Some(p) => self.store.iter_prefixed(packed, p),
         }
     }
     /// Follow a symbolic reference until a direct reference is found.
     ///
     /// If `symref` is a direct reference, a copy of it is returned. No more
     /// than five symbolic references will be followed, and cyclic
     /// references are detected. Both result in an error to be returned.
     ///
     /// Note that following is not the same as "peeling": no access to the
     /// object database is made, and thus no assumptions about the kind of
     /// object the reference ultimately points to can be made.
     pub fn follow(&self, symref: &Reference) -> Result<Reference, error::Follow> {
         match &symref.target {
             Target::Peeled(_) => Ok(symref.clone()),
             Target::Symbolic(name) => {
                 let mut seen = BTreeSet::new();
                 seen.insert(symref.name.clone());
                 let mut next = self
                     .find(name.to_partial())?
                     .ok_or_else(|| error::Follow::NotFound(name.clone()))?;
                 seen.insert(name.clone());
                 const MAX_DEPTH: usize = 5;
                 loop {
                     match next.target {
                         Target::Peeled(_) => return Ok(next),
                         Target::Symbolic(sym) => {
                             if seen.len() + 1 > MAX_DEPTH {
                                 return Err(error::Follow::DepthLimitExceeded(MAX_DEPTH));
                             }
                             if seen.contains(&sym) {
                                 return Err(error::Follow::Cycle(sym));
                             }
                             next = self
                                 .find(sym.to_partial())?
                                 .ok_or_else(|| error::Follow::NotFound(sym.clone()))?;
                             seen.insert(sym);
                         },
                     }
                 }
             },
         }
     }
 }
 struct Packed {
     buf: Arc<packed::Buffer>,
     path: PathBuf,
     mtime: SystemTime,
 }
 impl Packed {
     fn open(path: PathBuf) -> Result<Option<Self>, error::Snapshot> {
         use git_lock::{acquire, Marker};
         let _lock = Marker::acquire_to_hold_resource(
             &path,
             acquire::Fail::AfterDurationWithBackoff(Duration::from_millis(500)),
             None,
         )?;
         match path.metadata() {
             // `git-lock` will happily lock a non-existent file
             Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(None),
             Err(e) => Err(e.into()),
             Ok(meta) => {
                 let mtime = meta.modified()?;
                 let buf = Arc::new(packed::Buffer::open(&path, 32 * 1024)?);
                 Ok(Some(Self { buf, path, mtime }))
             },
         }
     }
     fn is_modified(&self) -> io::Result<bool> {
         match self.path.metadata() {
             // it existed before, so gone is modified
             Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(true),
             Err(e) => Err(e),
             Ok(meta) => {
                 let mtime = meta.modified()?;
                 Ok(self.mtime == mtime)
             },
         }
     }
 }

added archived/link-git/src/service.rs

@@ -0,0 +1,126 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{fmt::Debug, ops::Deref, str::FromStr};
 use git2::transport::Service as GitService;
 use lazy_static::lazy_static;
 lazy_static! {
     static ref SERVICE_REGEX: regex::Regex = regex::Regex::new(r"(\S+) '/?(.+)'").unwrap();
 }
 #[derive(Clone, Copy, PartialEq)]
 pub struct Service(pub GitService);
 /// A service and URN as passed to the exec_request of an SSH server by git when
 /// talking to an SSH remote. The `FromStr` implementation for this type expects
 /// a string of the form:
 ///
 /// `<request type> /<path>`
 ///
 /// Where the request type is either `upload-pack` or `receive-pack`, the
 /// leading slash before the urn is optional, and the `path` is whatever the
 /// `FromStr` of `Path` provides.
 #[derive(Debug, Clone)]
 pub struct SshService<Path> {
     pub service: Service,
     pub path: Path,
 }
 impl<Path> SshService<Path> {
     pub fn is_upload(&self) -> bool {
         match self.service.0 {
             GitService::UploadPackLs | GitService::UploadPack => true,
             GitService::ReceivePackLs | GitService::ReceivePack => false,
         }
     }
     pub fn is_receive(&self) -> bool {
         !self.is_upload()
     }
 }
 impl From<GitService> for Service {
     fn from(g: GitService) -> Self {
         Service(g)
     }
 }
 impl From<Service> for GitService {
     fn from(s: Service) -> Self {
         s.0
     }
 }
 #[derive(thiserror::Error, Debug)]
 pub enum ParseService {
     #[error("the exec str must be in the form <service> <urn>")]
     Format,
     #[error(transparent)]
     Namespace(Box<dyn std::error::Error + Send + Sync + 'static>),
     #[error("unknown service {0}")]
     UnknownService(String),
 }
 impl Debug for Service {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         f.debug_tuple("Service")
             .field(match self.0 {
                 GitService::UploadPackLs => &"UploadPackLs",
                 GitService::UploadPack => &"UploadPack",
                 GitService::ReceivePackLs => &"ReceivePackLs",
                 GitService::ReceivePack => &"ReceivePack",
             })
             .finish()
     }
 }
 impl std::fmt::Display for Service {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self.0 {
             GitService::UploadPack => write!(f, "upload-pack"),
             GitService::UploadPackLs => write!(f, "upload-pack-ls"),
             GitService::ReceivePack => write!(f, "receive-pack"),
             GitService::ReceivePackLs => write!(f, "receive-pack-ls"),
         }
     }
 }
 impl Deref for Service {
     type Target = GitService;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 impl<Path> FromStr for SshService<Path>
 where
     Path: FromStr,
     Path::Err: std::error::Error + Send + Sync + 'static,
 {
     type Err = ParseService;
     fn from_str(exec_str: &str) -> Result<Self, Self::Err> {
         let cap = SERVICE_REGEX
             .captures_iter(exec_str)
             .next()
             .ok_or(ParseService::Format)?;
         debug_assert!(cap.len() == 3);
         let service_str: &str = &cap[1];
         let urn_str = &cap[2];
         let path = urn_str
             .parse()
             .map_err(|err| ParseService::Namespace(Box::new(err)))?;
         let service = match service_str {
             "git-upload-pack" => Ok(Service(GitService::UploadPack)),
             "git-receive-pack" => Ok(Service(GitService::ReceivePack)),
             other => Err(ParseService::UnknownService(other.to_string())),
         }?;
         Ok(Self { service, path })
     }
 }

added archived/link-git/t/Cargo.toml

@@ -0,0 +1,31 @@

 [package]
 name = "link-git-test"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-or-later"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies]
 anyhow = "1"
 bstr = "0.2"
 futures = "0.3"
 futures_ringbuf = "0.3"
 tempfile = "3.4"
 [dev-dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 [dev-dependencies.link-git]
 path = ".."
 features = ["git2"]
 \ No newline at end of file

added archived/link-git/t/src/integration.rs

@@ -0,0 +1,6 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod protocol;

added archived/link-git/t/src/integration/protocol.rs

@@ -0,0 +1,383 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     collections::BTreeSet,
     io,
     path::Path,
     sync::{atomic::AtomicBool, Arc},
 };
 use bstr::ByteSlice as _;
 use futures::{AsyncReadExt as _, TryFutureExt as _};
 use link_git::protocol::{fetch, ls, packwriter, upload_pack, ObjectId, PackWriter, Ref};
 use tempfile::{tempdir, TempDir};
 fn upstream() -> TempDir {
     let tmp = tempdir().unwrap();
     let repo = git2::Repository::init_bare(&tmp).unwrap();
     let auth = git2::Signature::now("apollo", "apollo@cree.de").unwrap();
     let tree = {
         let empty = repo.treebuilder(None).unwrap();
         let oid = empty.write().unwrap();
         repo.find_tree(oid).unwrap()
     };
     let base = {
         let oid = repo
             .commit(
                 Some("refs/namespaces/foo/refs/heads/main"),
                 &auth,
                 &auth,
                 "initial",
                 &tree,
                 &[],
             )
             .unwrap();
         repo.find_commit(oid).unwrap()
     };
     let next = repo
         .commit(
             Some("refs/namespaces/foo/refs/heads/next"),
             &auth,
             &auth,
             "ng",
             &tree,
             &[&base],
         )
         .unwrap();
     repo.reference(
         "refs/namespaces/foo/refs/pulls/1/head",
         next,
         true,
         "pee arrr",
     )
     .unwrap();
     tmp
 }
 fn collect_refs(repo: &git2::Repository) -> Result<Vec<(String, git2::Oid)>, git2::Error> {
     repo.references()?
         .map(|x| x.map(|r| (r.name().unwrap().to_owned(), r.target().unwrap())))
         .collect()
 }
 fn update_tips<'a, T>(repo: &git2::Repository, tips: T) -> Result<(), anyhow::Error>
 where
     T: IntoIterator<Item = &'a Ref>,
 {
     for r in tips {
         match r {
             Ref::Direct { path, object } => {
                 repo.reference(
                     path.to_str()?,
                     git2::Oid::from_bytes(object.as_slice())?,
                     true,
                     "",
                 )?;
             },
             x => anyhow::bail!("unexpected ref variant: {:?}", x),
         }
     }
     Ok(())
 }
 fn collect_history(repo: &git2::Repository, tip: &str) -> Result<Vec<git2::Oid>, git2::Error> {
     let mut revwalk = repo.revwalk()?;
     revwalk.push_ref(tip)?;
     revwalk.collect()
 }
 fn run_ls_refs<R: AsRef<Path>>(remote: R, opt: ls::Options) -> io::Result<Vec<Ref>> {
     let (client, server) = futures_ringbuf::Endpoint::pair(256, 256);
     let client = async move {
         let (recv, send) = client.split();
         ls::ls_refs(opt, recv, send).await
     };
     let server = {
         let (recv, send) = server.split();
         upload_pack::upload_pack(&remote, recv, send).and_then(|(_hdr, run)| run)
     };
     let (client_out, server_out) =
         futures::executor::block_on(futures::future::try_join(client, server))?;
     assert!(server_out.success());
     Ok(client_out)
 }
 fn run_fetch<R, B, P>(
     remote: R,
     opt: fetch::Options,
     build_pack_writer: B,
 ) -> io::Result<fetch::Outputs<P::Output>>
 where
     R: AsRef<Path>,
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     let (client, server) = futures_ringbuf::Endpoint::pair(256, 256);
     let client = async move {
         let (recv, send) = client.split();
         fetch::fetch(opt, build_pack_writer, recv, send).await
     };
     let server = {
         let (recv, send) = server.split();
         upload_pack::upload_pack(&remote, recv, send).and_then(|(_hdr, run)| run)
     };
     let (client_out, server_out) =
         futures::executor::block_on(futures::future::try_join(client, server))?;
     assert!(server_out.success());
     Ok(client_out)
 }
 #[test]
 fn smoke() {
     let remote = upstream();
     let refs = run_ls_refs(
         &remote,
         ls::Options {
             repo: "foo".into(),
             extra_params: vec![],
             ref_prefixes: vec!["refs/heads/".into(), "refs/pulls/".into()],
         },
     )
     .unwrap();
     assert_eq!(
         refs.iter().map(|r| r.unpack().0).collect::<BTreeSet<_>>(),
         [
             "refs/heads/main".into(),
             "refs/heads/next".into(),
             "refs/pulls/1/head".into()
         ]
         .iter()
         .collect::<BTreeSet<_>>()
     );
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: refs.iter().map(|r| r.unpack().0.clone()).collect(),
         },
         |_| packwriter::Discard,
     )
     .unwrap();
     assert!(out.pack.is_some());
 }
 #[test]
 fn want_ref() {
     let remote = upstream();
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: vec!["refs/heads/main".into(), "refs/pulls/1/head".into()],
         },
         |_| packwriter::Discard,
     )
     .unwrap();
     assert!(out.pack.is_some());
     assert_eq!(
         out.wanted_refs
             .iter()
             .map(|r| r.unpack().0)
             .collect::<BTreeSet<_>>(),
         ["refs/heads/main".into(), "refs/pulls/1/head".into(),]
             .iter()
             .collect::<BTreeSet<_>>()
     )
 }
 #[test]
 #[should_panic(expected = "`fetch` is empty")]
 fn empty_fetch() {
     let remote = upstream();
     run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: vec![],
         },
         |_| packwriter::Discard,
     )
     .unwrap();
 }
 fn clone_with<R, L, B, P>(remote: R, local: L, build_pack_writer: B)
 where
     R: AsRef<Path>,
     L: AsRef<Path>,
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     let refs = run_ls_refs(
         &remote,
         ls::Options {
             repo: "foo".into(),
             extra_params: vec![],
             ref_prefixes: vec!["refs/heads/".into(), "refs/pulls/".into()],
         },
     )
     .unwrap();
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: refs.iter().map(|r| r.unpack().0.clone()).collect(),
         },
         build_pack_writer,
     )
     .unwrap();
     assert!(out.pack.is_some());
     let remote_repo = git2::Repository::open(remote).unwrap();
     remote_repo.set_namespace("foo").unwrap();
     let local_repo = git2::Repository::open(&local).unwrap();
     update_tips(&local_repo, &out.wanted_refs).unwrap();
     let mut remote_refs = collect_refs(&remote_repo).unwrap();
     let mut local_refs = collect_refs(&local_repo).unwrap();
     remote_refs.sort();
     local_refs.sort();
     assert_eq!(remote_refs, local_refs);
 }
 #[test]
 fn clone_libgit() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     clone_with(&remote, &local, move |stop| {
         packwriter::Libgit::new(packwriter::Options::default(), local_repo, stop)
     })
 }
 #[test]
 fn clone_gitoxide() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     clone_with(&remote, &local, move |stop| {
         packwriter::Standard::new(
             local_repo.path(),
             packwriter::Options::default(),
             packwriter::StandardThickener::new(local_repo.path()),
             stop,
         )
     })
 }
 fn thin_pack_with<R, L, B, P>(remote: R, local: L, build_pack_writer: B)
 where
     R: AsRef<Path>,
     L: AsRef<Path>,
     B: Fn(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     // Clone main only
     {
         let out = run_fetch(
             &remote,
             fetch::Options {
                 repo: "foo".into(),
                 extra_params: vec![],
                 haves: vec![],
                 wants: vec![],
                 want_refs: vec!["refs/heads/main".into()],
             },
             &build_pack_writer,
         )
         .unwrap();
         assert!(out.pack.is_some());
     }
     let remote_repo = git2::Repository::open(&remote).unwrap();
     remote_repo.set_namespace("foo").unwrap();
     let local_repo = git2::Repository::open(&local).unwrap();
     // Fetch next, which is ahead of main
     {
         let head = remote_repo.refname_to_id("refs/heads/main").unwrap();
         let out = run_fetch(
             &remote,
             fetch::Options {
                 repo: "foo".into(),
                 extra_params: vec![],
                 haves: vec![ObjectId::from_20_bytes(head.as_bytes())],
                 wants: vec![],
                 want_refs: vec!["refs/heads/next".into()],
             },
             build_pack_writer,
         )
         .unwrap();
         assert!(out.pack.is_some());
         update_tips(&local_repo, &out.wanted_refs).unwrap();
     }
     let remote_history = collect_history(&remote_repo, "refs/heads/next").unwrap();
     let local_history = collect_history(&local_repo, "refs/heads/next").unwrap();
     assert!(!remote_history.is_empty());
     assert_eq!(remote_history, local_history)
 }
 #[test]
 #[ignore]
 fn thin_pack_libgit() {
     let remote = upstream();
     let local = tempdir().unwrap();
     thin_pack_with(&remote, &local, |stop| {
         let local_repo = git2::Repository::init(&local).unwrap();
         packwriter::Libgit::new(packwriter::Options::default(), local_repo, stop)
     })
 }
 #[test]
 fn thin_pack_gitoxide() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     let git_dir = local_repo.path().to_owned();
     thin_pack_with(&remote, &local, move |stop| {
         packwriter::Standard::new(
             &git_dir,
             packwriter::Options::default(),
             packwriter::StandardThickener::new(&git_dir),
             stop,
         )
     })
 }

added archived/link-git/t/src/lib.rs

@@ -0,0 +1,7 @@

 // Copyright © 2022 The Radicle Link Contributors
 // SPDX-License-Identifier: GPL-3.0-or-later
 #[cfg(test)]
 mod integration;
 #[cfg(test)]
 mod tests;

added archived/link-git/t/src/tests.rs

@@ -0,0 +1,6 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod protocol;

added archived/link-git/t/src/tests/protocol.rs

@@ -0,0 +1,7 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod take;
 mod upload_pack;

added archived/link-git/t/src/tests/protocol/take.rs

@@ -0,0 +1,47 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use futures::{executor::block_on, io::Cursor, AsyncReadExt as _};
 use link_git::protocol::take::TryTake;
 use std::io;
 #[test]
 fn when_within_limit() {
     let input = b"the world is everything that is the case";
     let output = block_on(async move {
         let mut buf = Vec::with_capacity(input.len());
         TryTake::new(Cursor::new(input), input.len() as u64 + 1)
             .read_to_end(&mut buf)
             .await?;
         Ok::<_, io::Error>(buf)
     })
     .unwrap();
     assert_eq!(input, output.as_slice())
 }
 #[test]
 fn when_limit_exceeded() {
     let input = b"what is the case, the fact, is the existence of atomic facts";
     let output =
         block_on(TryTake::new(Cursor::new(input), 10).read_to_end(&mut Vec::new())).unwrap_err();
     assert_eq!(output.to_string(), "max input size exceeded")
 }
 #[test]
 fn excess_bytes_remain() {
     let input = b"whereof one cannot speak, thereof one must be silent";
     let output = block_on(async move {
         let mut buf = Vec::with_capacity(input.len());
         let res = TryTake::new(Cursor::new(input), input.len() as u64)
             .read_to_end(&mut buf)
             .await;
         assert!(res.is_err());
         buf
     });
     assert_eq!(input, output.as_slice())
 }

added archived/link-git/t/src/tests/protocol/upload_pack.rs

@@ -0,0 +1,129 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use link_git::protocol::upload_pack;
 mod header {
     use super::*;
     use std::str::FromStr as _;
     #[test]
     fn service_must_be_upload_pack() {
         assert_eq!(
             upload_pack::Header::from_str("git-receive-pack "),
             Err("unsupported service")
         )
     }
     #[test]
     fn no_path() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack "),
             Err("missing path")
         )
     }
     #[test]
     fn empty_path() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack \0host=lolhost:123\0"),
             Err("empty path")
         )
     }
     #[test]
     fn host_and_port() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0host=lolhost:123\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), Some(123))),
                 extra: vec![]
             }
         )
     }
     #[test]
     fn host_without_port() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0host=lolhost\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), None)),
                 extra: vec![]
             }
         )
     }
     #[test]
     fn no_host() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![]
             }
         )
     }
     #[test]
     fn empty_host() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![]
             }
         )
     }
     #[test]
     fn no_host_extra() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0\0version=42\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![("version".to_owned(), Some("42".to_owned()))]
             }
         )
     }
     #[test]
     fn host_port_extra() {
         assert_eq!(
             upload_pack::Header::from_str(
                 "git-upload-pack /git.git\0host=lolhost:123\0\0version=42\0"
             )
             .unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), Some(123))),
                 extra: vec![("version".to_owned(), Some("42".to_owned()))]
             }
         )
     }
     #[test]
     fn host_extra_extra() {
         assert_eq!(
             upload_pack::Header::from_str(
                 "git-upload-pack /git.git\0host=lolhost\0\0version=42\0foo\0n=69\0"
             )
             .unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), None)),
                 extra: vec![
                     ("version".to_owned(), Some("42".to_owned())),
                     ("foo".to_owned(), None),
                     ("n".to_owned(), Some("69".to_owned()))
                 ]
             }
         )
     }
 }

deleted git-commit/Cargo.toml

@@ -1,19 +0,0 @@

 [package]
 name = "git-commit"
 version = "0.3.0"
 license = "MIT OR Apache-2.0"
 edition = "2021"
 authors = [
   "Alexis Sellier <alexis@radicle.xyz>",
   "Fintan Halpenny <fintan.halpenny@gmail.com>",
 ]
 description = "A small library for parsing, displaying and creating a git commit"
 keywords = ["git", "git-commit", "git-trailers", "radicle"]
 [dependencies]
 thiserror = "1"
 [dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]

deleted git-commit/src/author.rs

@@ -1,129 +0,0 @@

 use std::{
     fmt,
     num::ParseIntError,
     str::{self, FromStr},
 };
 use thiserror::Error;
 /// The data for indicating authorship of an action within a
 /// [`super::Commit`].
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct Author {
     /// Name corresponding to `user.name` in the git config.
     ///
     /// Note: this must not contain `<` or `>`.
     pub name: String,
     /// Email corresponding to `user.email` in the git config.
     ///
     /// Note: this must not contain `<` or `>`.
     pub email: String,
     /// The time of this author's action.
     pub time: Time,
 }
 /// The time of a [`Author`]'s action.
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub struct Time {
     seconds: i64,
     offset: i32,
 }
 impl Time {
     pub fn new(seconds: i64, offset: i32) -> Self {
         Self { seconds, offset }
     }
     /// Return the time, in seconds, since the epoch.
     pub fn seconds(&self) -> i64 {
         self.seconds
     }
     /// Return the timezone offset, in minutes.
     pub fn offset(&self) -> i32 {
         self.offset
     }
 }
 impl From<Time> for git2::Time {
     fn from(t: Time) -> Self {
         Self::new(t.seconds, t.offset)
     }
 }
 impl From<git2::Time> for Time {
     fn from(t: git2::Time) -> Self {
         Self::new(t.seconds(), t.offset_minutes())
     }
 }
 impl fmt::Display for Time {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let sign = if self.offset.is_negative() { '-' } else { '+' };
         write!(f, "{} {}{:0>4}", self.seconds, sign, self.offset.abs())
     }
 }
 impl fmt::Display for Author {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{} <{}> {}", self.name, self.email, self.time,)
     }
 }
 impl TryFrom<&Author> for git2::Signature<'_> {
     type Error = git2::Error;
     fn try_from(person: &Author) -> Result<Self, Self::Error> {
         let time = git2::Time::new(person.time.seconds, person.time.offset);
         git2::Signature::new(&person.name, &person.email, &time)
     }
 }
 impl<'a> TryFrom<&git2::Signature<'a>> for Author {
     type Error = str::Utf8Error;
     fn try_from(value: &git2::Signature<'a>) -> Result<Self, Self::Error> {
         Ok(Self {
             name: str::from_utf8(value.name_bytes())?.to_string(),
             email: str::from_utf8(value.email_bytes())?.to_string(),
             time: value.when().into(),
         })
     }
 }
 #[derive(Debug, Error)]
 pub enum ParseError {
     #[error("missing '{0}' while parsing person signature")]
     Missing(&'static str),
     #[error("offset was incorrect format while parsing person signature")]
     Offset(#[source] ParseIntError),
     #[error("time was incorrect format while parsing person signature")]
     Time(#[source] ParseIntError),
     #[error("time offset is expected to be '+'/'-' for a person siganture")]
     UnknownOffset,
 }
 impl FromStr for Author {
     type Err = ParseError;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let mut components = s.split(' ');
         let offset = match components.next_back() {
             None => return Err(ParseError::Missing("offset")),
             Some(offset) => offset.parse::<i32>().map_err(ParseError::Offset)?,
         };
         let time = match components.next_back() {
             None => return Err(ParseError::Missing("time")),
             Some(time) => time.parse::<i64>().map_err(ParseError::Time)?,
         };
         let time = Time::new(time, offset);
         let email = components
             .next_back()
             .ok_or(ParseError::Missing("email"))?
             .trim_matches(|c| c == '<' || c == '>')
             .to_owned();
         let name = components.collect::<Vec<_>>().join(" ");
         Ok(Self { name, email, time })
     }
 }

deleted git-commit/src/headers.rs

@@ -1,71 +0,0 @@

 use std::borrow::Cow;
 const BEGIN_SSH: &str = "-----BEGIN SSH SIGNATURE-----\n";
 const BEGIN_PGP: &str = "-----BEGIN PGP SIGNATURE-----\n";
 /// A collection of headers stored in a [`super::Commit`].
 ///
 /// Note: these do not include `tree`, `parent`, `author`, and `committer`.
 #[derive(Clone, Debug, Default)]
 pub struct Headers(pub(super) Vec<(String, String)>);
 /// A `gpgsig` signature stored in a [`super::Commit`].
 pub enum Signature<'a> {
     /// A PGP signature, i.e. starts with `-----BEGIN PGP SIGNATURE-----`.
     Pgp(Cow<'a, str>),
     /// A SSH signature, i.e. starts with `-----BEGIN SSH SIGNATURE-----`.
     Ssh(Cow<'a, str>),
 }
 impl<'a> Signature<'a> {
     fn from_str(s: &'a str) -> Result<Self, UnknownScheme> {
         if s.starts_with(BEGIN_SSH) {
             Ok(Signature::Ssh(Cow::Borrowed(s)))
         } else if s.starts_with(BEGIN_PGP) {
             Ok(Signature::Pgp(Cow::Borrowed(s)))
         } else {
             Err(UnknownScheme)
         }
     }
 }
 pub struct UnknownScheme;
 impl<'a> ToString for Signature<'a> {
     fn to_string(&self) -> String {
         match self {
             Signature::Pgp(pgp) => pgp.to_string(),
             Signature::Ssh(ssh) => ssh.to_string(),
         }
     }
 }
 impl Headers {
     pub fn new() -> Self {
         Headers(Vec::new())
     }
     pub fn iter(&self) -> impl Iterator<Item = (&str, &str)> {
         self.0.iter().map(|(k, v)| (k.as_str(), v.as_str()))
     }
     pub fn values<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a str> + '_ {
         self.iter()
             .filter_map(move |(k, v)| (k == name).then_some(v))
     }
     pub fn signatures(&self) -> impl Iterator<Item = Signature> + '_ {
         self.0.iter().filter_map(|(k, v)| {
             if k == "gpgsig" {
                 Signature::from_str(v).ok()
             } else {
                 None
             }
         })
     }
     /// Push a header to the end of the headers section.
     pub fn push(&mut self, name: &str, value: &str) {
         self.0.push((name.to_owned(), value.trim().to_owned()));
     }
 }

deleted git-commit/src/lib.rs

@@ -1,295 +0,0 @@

 //! The `git-commit` crate provides parsing a displaying of a [git
 //! commit][git-commit].
 //!
 //! The [`Commit`] data can be constructed using the `FromStr`
 //! implementation, or by converting from a `git2::Buf`.
 //!
 //! The [`Headers`] can be accessed via [`Commit::headers`]. If the
 //! signatures of the commit are of particular interest, the
 //! [`Commit::signatures`] method can be used, which returns a series of
 //! [`Signature`]s.
 //!
 //! [git-commit]: https://git-scm.com/book/en/v2/Git-Internals-Git-Objects
 use std::{
     fmt::Write as _,
     str::{self, FromStr},
 };
 use git2::{ObjectType, Oid};
 pub mod author;
 pub use author::Author;
 pub mod headers;
 pub use headers::{Headers, Signature};
 pub mod trailers;
 pub use trailers::{OwnedTrailer, Trailer, Trailers};
 /// A git commit in its object description form, i.e. the output of
 /// `git cat-file` for a commit object.
 #[derive(Debug)]
 pub struct Commit {
     tree: Oid,
     parents: Vec<Oid>,
     author: Author,
     committer: Author,
     headers: Headers,
     message: String,
     trailers: Vec<OwnedTrailer>,
 }
 impl Commit {
     pub fn new<I, T>(
         tree: Oid,
         parents: Vec<Oid>,
         author: Author,
         committer: Author,
         headers: Headers,
         message: String,
         trailers: I,
     ) -> Self
     where
         I: IntoIterator<Item = T>,
         OwnedTrailer: From<T>,
     {
         let trailers = trailers.into_iter().map(OwnedTrailer::from).collect();
         Self {
             tree,
             parents,
             author,
             committer,
             headers,
             message,
             trailers,
         }
     }
     /// Read the [`Commit`] from the `repo` that is expected to be found at
     /// `oid`.
     pub fn read(repo: &git2::Repository, oid: Oid) -> Result<Self, error::Read> {
         let odb = repo.odb()?;
         let object = odb.read(oid)?;
         Ok(Commit::try_from(object.data())?)
     }
     /// Write the given [`Commit`] to the `repo`. The resulting `Oid`
     /// is the identifier for this commit.
     pub fn write(&self, repo: &git2::Repository) -> Result<Oid, git2::Error> {
         let odb = repo.odb()?;
         odb.write(ObjectType::Commit, self.to_string().as_bytes())
     }
     /// The tree [`Oid`] this commit points to.
     pub fn tree(&self) -> Oid {
         self.tree
     }
     /// The parent [`Oid`]s of this commit.
     pub fn parents(&self) -> impl Iterator<Item = Oid> + '_ {
         self.parents.iter().copied()
     }
     /// The author of this commit, i.e. the header corresponding to `author`.
     pub fn author(&self) -> &Author {
         &self.author
     }
     /// The committer of this commit, i.e. the header corresponding to
     /// `committer`.
     pub fn committer(&self) -> &Author {
         &self.committer
     }
     /// The message body of this commit.
     pub fn message(&self) -> &str {
         &self.message
     }
     /// The [`Signature`]s found in this commit, i.e. the headers corresponding
     /// to `gpgsig`.
     pub fn signatures(&self) -> impl Iterator<Item = Signature> + '_ {
         self.headers.signatures()
     }
     /// The [`Headers`] found in this commit.
     ///
     /// Note: these do not include `tree`, `parent`, `author`, and `committer`.
     pub fn headers(&self) -> impl Iterator<Item = (&str, &str)> {
         self.headers.iter()
     }
     /// Iterate over the [`Headers`] values that match the provided `name`.
     pub fn values<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a str> + '_ {
         self.headers.values(name)
     }
     /// Push a header to the end of the headers section.
     pub fn push_header(&mut self, name: &str, value: &str) {
         self.headers.push(name, value.trim());
     }
     pub fn trailers(&self) -> impl Iterator<Item = &OwnedTrailer> {
         self.trailers.iter()
     }
 }
 pub mod error {
     use std::str;
     use thiserror::Error;
     use super::author;
     #[derive(Debug, Error)]
     pub enum Read {
         #[error(transparent)]
         Git(#[from] git2::Error),
         #[error(transparent)]
         Parse(#[from] Parse),
     }
     #[derive(Debug, Error)]
     pub enum Parse {
         #[error(transparent)]
         Author(#[from] author::ParseError),
         #[error("invalid '{header}'")]
         InvalidHeader {
             header: &'static str,
             #[source]
             err: git2::Error,
         },
         #[error("invalid git commit object format")]
         InvalidFormat,
         #[error("missing '{0}' while parsing commit")]
         Missing(&'static str),
         #[error("error occurred while checking for git-trailers: {0}")]
         Trailers(#[source] git2::Error),
         #[error(transparent)]
         Utf8(#[from] str::Utf8Error),
     }
 }
 impl TryFrom<git2::Buf> for Commit {
     type Error = error::Parse;
     fn try_from(value: git2::Buf) -> Result<Self, Self::Error> {
         value.as_str().ok_or(error::Parse::InvalidFormat)?.parse()
     }
 }
 impl TryFrom<&[u8]> for Commit {
     type Error = error::Parse;
     fn try_from(data: &[u8]) -> Result<Self, Self::Error> {
         Commit::from_str(str::from_utf8(data)?)
     }
 }
 impl FromStr for Commit {
     type Err = error::Parse;
     fn from_str(buffer: &str) -> Result<Self, Self::Err> {
         let (header, message) = buffer
             .split_once("\n\n")
             .ok_or(error::Parse::InvalidFormat)?;
         let mut lines = header.lines();
         let tree = match lines.next() {
             Some(tree) => tree
                 .strip_prefix("tree ")
                 .map(git2::Oid::from_str)
                 .transpose()
                 .map_err(|err| error::Parse::InvalidHeader {
                     header: "tree",
                     err,
                 })?
                 .ok_or(error::Parse::Missing("tree"))?,
             None => return Err(error::Parse::Missing("tree")),
         };
         let mut parents = Vec::new();
         let mut author: Option<Author> = None;
         let mut committer: Option<Author> = None;
         let mut headers = Headers::new();
         for line in lines {
             // Check if a signature is still being parsed
             if let Some(rest) = line.strip_prefix(' ') {
                 let value: &mut String = headers
                     .0
                     .last_mut()
                     .map(|(_, v)| v)
                     .ok_or(error::Parse::InvalidFormat)?;
                 value.push('\n');
                 value.push_str(rest);
                 continue;
             }
             if let Some((name, value)) = line.split_once(' ') {
                 match name {
                     "parent" => parents.push(git2::Oid::from_str(value).map_err(|err| {
                         error::Parse::InvalidHeader {
                             header: "parent",
                             err,
                         }
                     })?),
                     "author" => author = Some(value.parse::<Author>()?),
                     "committer" => committer = Some(value.parse::<Author>()?),
                     _ => headers.push(name, value),
                 }
                 continue;
             }
         }
         let trailers = trailers::Trailers::parse(message).map_err(error::Parse::Trailers)?;
         let message = message
             .strip_suffix(&trailers.to_string(": "))
             .unwrap_or(message)
             .to_string();
         let trailers = trailers.iter().map(OwnedTrailer::from).collect();
         Ok(Self {
             tree,
             parents,
             author: author.ok_or(error::Parse::Missing("author"))?,
             committer: committer.ok_or(error::Parse::Missing("committer"))?,
             headers,
             message,
             trailers,
         })
     }
 }
 impl ToString for Commit {
     fn to_string(&self) -> String {
         let mut buf = String::new();
         writeln!(buf, "tree {}", self.tree).ok();
         for parent in &self.parents {
             writeln!(buf, "parent {parent}").ok();
         }
         writeln!(buf, "author {}", self.author).ok();
         writeln!(buf, "committer {}", self.committer).ok();
         for (name, value) in self.headers.iter() {
             writeln!(buf, "{name} {}", value.replace('\n', "\n ")).ok();
         }
         writeln!(buf).ok();
         write!(buf, "{}", self.message.trim()).ok();
         writeln!(buf).ok();
         if !self.trailers.is_empty() {
             writeln!(buf).ok();
         }
         for trailer in self.trailers.iter() {
             writeln!(buf, "{}", Trailer::from(trailer).display(": ")).ok();
         }
         buf
     }
 }

deleted git-commit/src/trailers.rs

@@ -1,214 +0,0 @@

 use std::{borrow::Cow, fmt, fmt::Write, ops::Deref, str::FromStr};
 use git2::{MessageTrailersStrs, MessageTrailersStrsIterator};
 /// A Git commit's set of trailers that are left in the commit's
 /// message.
 ///
 /// Trailers are key/value pairs in the last paragraph of a message,
 /// not including any patches or conflicts that may be present.
 ///
 /// # Usage
 ///
 /// To construct `Trailers`, you can use [`Trailers::parse`] or its
 /// `FromStr` implementation.
 ///
 /// To iterate over the trailers, you can use [`Trailers::iter`].
 ///
 /// To render the trailers to a `String`, you can use
 /// [`Trailers::to_string`] or its `Display` implementation (note that
 /// it will default to using `": "` as the separator.
 ///
 /// # Examples
 ///
 /// ```text
 /// Add new functionality
 ///
 /// Making code better with new functionality.
 ///
 /// X-Signed-Off-By: Alex Sellier
 /// X-Co-Authored-By: Fintan Halpenny
 /// ```
 ///
 /// The trailers in the above example are:
 ///
 /// ```text
 /// X-Signed-Off-By: Alex Sellier
 /// X-Co-Authored-By: Fintan Halpenny
 /// ```
 pub struct Trailers {
     inner: MessageTrailersStrs,
 }
 impl Trailers {
     pub fn parse(message: &str) -> Result<Self, git2::Error> {
         Ok(Self {
             inner: git2::message_trailers_strs(message)?,
         })
     }
     pub fn iter(&self) -> Iter<'_> {
         Iter {
             inner: self.inner.iter(),
         }
     }
     pub fn to_string<'a, S>(&self, sep: S) -> String
     where
         S: Separator<'a>,
     {
         let mut buf = String::new();
         for (i, trailer) in self.iter().enumerate() {
             if i > 0 {
                 writeln!(buf).ok();
             }
             write!(buf, "{}", trailer.display(sep.sep_for(&trailer.token))).ok();
         }
         writeln!(buf).ok();
         buf
     }
 }
 impl fmt::Display for Trailers {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.write_str(&self.to_string(": "))
     }
 }
 pub trait Separator<'a> {
     fn sep_for(&self, token: &Token) -> &'a str;
 }
 impl<'a> Separator<'a> for &'a str {
     fn sep_for(&self, _: &Token) -> &'a str {
         self
     }
 }
 impl<'a, F> Separator<'a> for F
 where
     F: Fn(&Token) -> &'a str,
 {
     fn sep_for(&self, token: &Token) -> &'a str {
         self(token)
     }
 }
 impl FromStr for Trailers {
     type Err = git2::Error;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         Self::parse(s)
     }
 }
 pub struct Iter<'a> {
     inner: MessageTrailersStrsIterator<'a>,
 }
 impl<'a> Iterator for Iter<'a> {
     type Item = Trailer<'a>;
     fn next(&mut self) -> Option<Self::Item> {
         let (token, value) = self.inner.next()?;
         Some(Trailer {
             token: Token(token),
             value: Cow::Borrowed(value),
         })
     }
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Token<'a>(&'a str);
 impl Deref for Token<'_> {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         self.0
     }
 }
 pub struct Display<'a> {
     trailer: &'a Trailer<'a>,
     separator: &'a str,
 }
 impl<'a> fmt::Display for Display<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(
             f,
             "{}{}{}",
             self.trailer.token.deref(),
             self.separator,
             self.trailer.value,
         )
     }
 }
 /// A trailer is a key/value pair found in the last paragraph of a Git
 /// commit message, not including any patches or conflicts that may be
 /// present.
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Trailer<'a> {
     pub token: Token<'a>,
     pub value: Cow<'a, str>,
 }
 impl<'a> Trailer<'a> {
     pub fn display(&'a self, separator: &'a str) -> Display<'a> {
         Display {
             trailer: self,
             separator,
         }
     }
     pub fn to_owned(&self) -> OwnedTrailer {
         OwnedTrailer::from(self)
     }
 }
 /// A version of the [`Trailer`] which owns its token and
 /// value. Useful for when you need to carry trailers around in a long
 /// lived data structure.
 #[derive(Debug)]
 pub struct OwnedTrailer {
     pub token: OwnedToken,
     pub value: String,
 }
 #[derive(Debug)]
 pub struct OwnedToken(String);
 impl Deref for OwnedToken {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 impl<'a> From<&Trailer<'a>> for OwnedTrailer {
     fn from(t: &Trailer<'a>) -> Self {
         OwnedTrailer {
             token: OwnedToken(t.token.0.to_string()),
             value: t.value.to_string(),
         }
     }
 }
 impl<'a> From<Trailer<'a>> for OwnedTrailer {
     fn from(t: Trailer<'a>) -> Self {
         (&t).into()
     }
 }
 impl<'a> From<&'a OwnedTrailer> for Trailer<'a> {
     fn from(t: &'a OwnedTrailer) -> Self {
         Trailer {
             token: Token(t.token.0.as_str()),
             value: Cow::from(&t.value),
         }
     }
 }

deleted git-commit/t/Cargo.toml

@@ -1,26 +0,0 @@

 [package]
 name = "git-commit-test"
 version = "0.1.0"
 license = "MIT OR Apache-2.0"
 edition = "2021"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies.git-commit]
 path = ".."
 [dev-dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 [dev-dependencies.test-helpers]
 path = "../../test/test-helpers"
 \ No newline at end of file

deleted git-commit/t/src/commit.rs

@@ -1,149 +0,0 @@

 use std::str::FromStr as _;
 use git_commit::Commit;
 const NO_TRAILER: &str = "\
 tree 50d6ef440728217febf9e35716d8b0296608d7f8
 parent 0ad95dbdfe9fdf81938ca419cf740469173e2022
 parent a4ec9e07e1b2e6f37f7119651ae3bb63b79988b6
 author Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 committer Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 Merge remote-tracking branch 'origin/surf/organise-tests'
 * origin/surf/organise-tests:
   radicle-surf: organise tests
 ";
 const SINGLE_TRAILER: &str = "\
 tree 50d6ef440728217febf9e35716d8b0296608d7f8
 parent 0ad95dbdfe9fdf81938ca419cf740469173e2022
 parent a4ec9e07e1b2e6f37f7119651ae3bb63b79988b6
 author Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 committer Fintan Halpenny <fintan.halpenny@gmail.com> 1669292989 +0000
 Merge remote-tracking branch 'origin/surf/organise-tests'
 * origin/surf/organise-tests:
   radicle-surf: organise tests
 Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
 ";
 const UNSIGNED: &str = "\
 tree c66cc435f83ed0fba90ed4500e9b4b96e9bd001b
 parent af06ad645133f580a87895353508053c5de60716
 author Alexis Sellier <alexis@radicle.xyz> 1664467633 +0200
 committer Alexis Sellier <alexis@radicle.xyz> 1664786099 -0200
 Add SSH functionality with new `radicle-ssh`
 We borrow code from `thrussh`, refactored to be runtime-less.
 X-Signed-Off-By: Alex Sellier
 X-Co-Authored-By: Fintan Halpenny
 ";
 const SSH_SIGNATURE: &str = "\
 -----BEGIN SSH SIGNATURE-----
 U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgvjrQogRxxLjzzWns8+mKJAGzEX
 fm2ALoN7pyvD2ttQAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
 AAAAQIQvhIewOgGfnXLgR5Qe1ZEr2vjekYXTdOfNWICi6ZiosgfZnIqV0enCPC4arVqQg+
 GPp0HqxaB911OnSAr6bwU=
 -----END SSH SIGNATURE-----";
 const PGP_SIGNATURE: &str = "\
 -----BEGIN PGP SIGNATURE-----
 iQIzBAABCAAdFiEEHe7BWIo9taTY6TIiJVL7b2QGbLcFAmNcDhsACgkQJVL7b2QG
 bLcc9Q//RgKf5N4enta9AuszGJZvdFhMPfIDUdw+WAZA6Z8zDPb/aAXZrPP/KIOM
 zmX08FTqjP9B9YeWrEcFuAtxsRNqbDKrfpko9Y6bTsdrAJg3WIypBb9F8YDKJ6BO
 CORJJqWOsLW129jW+mJDhcE0YTvPlcMiMI2qjVXKhU6Ag11W8IRZyTb9tvEaDjBR
 YUnkPvgubv61K9BeUKexE2MakPBldaQtl0MF1Dk7/zo5btLd+KP0SOUKEhuMEu5b
 LATHHdiYjt/2Xz7q8EcrFxXUaipxZe89dfTdi2ooJQw3ZDqjDHsGTHpDeBuzuSaJ
 fKVRwFz/78onfHPhmU4wfUhh+Fcl90p5/T+4dt2K6cr+7rq078e+aJYxkX2d0MG
 PG0xGP0RN4g+X92K1kGuzoe4870xAnRTNh5nUB+X9snO8tVqQZTb0M2yI+sTsKrv
 w/f+uiqL6e9DgIxlO5dgiNHCVoCs1QJ900jUGisrlzS4+n6GzMsG6s3c01X4yY9G
 Ou/kGkMsn7tqejqC9RufygcchCFZqYwaHQwPkiYhfYGMarMpoCFvll0h8tSparpS
 nnpAQXVdu8m3v1YdPUuTg5ksxSOe9HCIlVXGFhxy3iqCVRn+51FRnUI63rMTOm9/
 LBqzvji02lDUPGqPgXfcCS0ty8FM2flBIXnwb8TDzCaPYhf53+U=
 =6dw2
 -----END PGP SIGNATURE-----";
 const SIGNED: &str = "\
 tree c66cc435f83ed0fba90ed4500e9b4b96e9bd001b
 parent af06ad645133f580a87895353508053c5de60716
 author Alexis Sellier <alexis@radicle.xyz> 1664467633 +0200
 committer Alexis Sellier <alexis@radicle.xyz> 1664786099 -0200
 other e6fe3c97619deb8ab4198620f9a7eb79d98363dd
 gpgsig -----BEGIN SSH SIGNATURE-----
  U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgvjrQogRxxLjzzWns8+mKJAGzEX
 fm2ALoN7pyvD2ttQAAAADZ2l0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5
  AAAAQIQvhIewOgGfnXLgR5Qe1ZEr2vjekYXTdOfNWICi6ZiosgfZnIqV0enCPC4arVqQg+
  GPp0HqxaB911OnSAr6bwU=
  -----END SSH SIGNATURE-----
 gpgsig -----BEGIN PGP SIGNATURE-----
  iQIzBAABCAAdFiEEHe7BWIo9taTY6TIiJVL7b2QGbLcFAmNcDhsACgkQJVL7b2QG
  bLcc9Q//RgKf5N4enta9AuszGJZvdFhMPfIDUdw+WAZA6Z8zDPb/aAXZrPP/KIOM
  zmX08FTqjP9B9YeWrEcFuAtxsRNqbDKrfpko9Y6bTsdrAJg3WIypBb9F8YDKJ6BO
  CORJJqWOsLW129jW+mJDhcE0YTvPlcMiMI2qjVXKhU6Ag11W8IRZyTb9tvEaDjBR
  YUnkPvgubv61K9BeUKexE2MakPBldaQtl0MF1Dk7/zo5btLd+KP0SOUKEhuMEu5b
  LATHHdiYjt/2Xz7q8EcrFxXUaipxZe89dfTdi2ooJQw3ZDqjDHsGTHpDeBuzuSaJ
 fKVRwFz/78onfHPhmU4wfUhh+Fcl90p5/T+4dt2K6cr+7rq078e+aJYxkX2d0MG
  PG0xGP0RN4g+X92K1kGuzoe4870xAnRTNh5nUB+X9snO8tVqQZTb0M2yI+sTsKrv
  w/f+uiqL6e9DgIxlO5dgiNHCVoCs1QJ900jUGisrlzS4+n6GzMsG6s3c01X4yY9G
  Ou/kGkMsn7tqejqC9RufygcchCFZqYwaHQwPkiYhfYGMarMpoCFvll0h8tSparpS
  nnpAQXVdu8m3v1YdPUuTg5ksxSOe9HCIlVXGFhxy3iqCVRn+51FRnUI63rMTOm9/
  LBqzvji02lDUPGqPgXfcCS0ty8FM2flBIXnwb8TDzCaPYhf53+U=
  =6dw2
  -----END PGP SIGNATURE-----
 Add SSH functionality with new `radicle-ssh`
 We borrow code from `thrussh`, refactored to be runtime-less.
 X-Signed-Off-By: Alex Sellier
 X-Co-Authored-By: Fintan Halpenny
 ";
 #[test]
 fn test_push_header() {
     let mut commit = Commit::from_str(UNSIGNED).unwrap();
     commit.push_header("other", "e6fe3c97619deb8ab4198620f9a7eb79d98363dd");
     commit.push_header("gpgsig", SSH_SIGNATURE);
     commit.push_header("gpgsig", PGP_SIGNATURE);
     assert_eq!(commit.to_string(), SIGNED);
 }
 #[test]
 fn test_get_header() {
     let commit = Commit::from_str(SIGNED).unwrap();
     assert_eq!(
         commit
             .signatures()
             .map(|sig| sig.to_string())
             .collect::<Vec<_>>(),
         vec![SSH_SIGNATURE.to_owned(), PGP_SIGNATURE.to_owned()]
     );
     assert_eq!(
         commit.values("other").collect::<Vec<_>>(),
         vec![String::from("e6fe3c97619deb8ab4198620f9a7eb79d98363dd")],
     );
     assert!(commit.values("unknown").next().is_none());
 }
 #[test]
 fn test_conversion() {
     assert_eq!(
         Commit::from_str(NO_TRAILER).unwrap().to_string(),
         NO_TRAILER
     );
     assert_eq!(
         Commit::from_str(SINGLE_TRAILER).unwrap().to_string(),
         SINGLE_TRAILER
     );
     assert_eq!(Commit::from_str(SIGNED).unwrap().to_string(), SIGNED);
     assert_eq!(Commit::from_str(UNSIGNED).unwrap().to_string(), UNSIGNED);
 }

deleted git-commit/t/src/integration.rs

@@ -1,28 +0,0 @@

 use std::io;
 use git_commit::Commit;
 use test_helpers::tempdir::WithTmpDir;
 #[test]
 fn valid_commits() {
     let radicle_git = format!(
         "file://{}",
         git2::Repository::discover(".").unwrap().path().display()
     );
     let repo = WithTmpDir::new(|path| {
         let repo = git2::Repository::clone(&radicle_git, path)
             .map_err(|err| io::Error::new(io::ErrorKind::Other, err))?;
         Ok::<_, io::Error>(repo)
     })
     .unwrap();
     let mut walk = repo.revwalk().unwrap();
     walk.push_head().unwrap();
     // take the first 20 commits and make sure we can parse them
     for oid in walk.take(20) {
         let oid = oid.unwrap();
         let commit = Commit::read(&repo, oid);
         assert!(commit.is_ok(), "Oid: {oid}, Error: {commit:?}")
     }
 }

deleted git-commit/t/src/lib.rs

@@ -1,5 +0,0 @@

 #[cfg(test)]
 mod commit;
 #[cfg(test)]
 mod integration;

deleted git-trailers/Cargo.toml

@@ -1,20 +0,0 @@

 [package]
 name = "git-trailers"
 version = "0.1.0"
 authors = [
   "Nuno Alexandre <hi@nunoalexandre.com>",
   "Kim Altintop <kim@eagain.st>",
   "Fintan Halpenny <fintan.halpenny@gmail.com>",
 ]
 edition = "2018"
 license = "GPL-3.0-or-later"
 description = "Library to support parsing and display git trailers <https://git-scm.com/docs/git-interpret-trailers>"
 keywords = ["git"]
 [lib]
 doctest = false
 test = false
 [dependencies]
 nom = "7.1"
 thiserror = "1.0"

deleted git-trailers/src/lib.rs

@@ -1,300 +0,0 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{borrow::Cow, convert::TryFrom, fmt, ops::Deref};
 use thiserror::Error;
 #[derive(Debug, Error)]
 #[non_exhaustive]
 pub enum Error {
     #[error("the trailers paragraph is missing in the given message")]
     MissingParagraph,
     #[error("trailing data after trailers section: '{0}")]
     Trailing(String),
     #[error(transparent)]
     Parse(#[from] nom::Err<nom::error::Error<String>>),
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Trailer<'a> {
     pub token: Token<'a>,
     pub values: Vec<Cow<'a, str>>,
 }
 impl<'a> Trailer<'a> {
     pub fn display(&'a self, separator: &'a str) -> Display<'a> {
         Display {
             trailer: self,
             separator,
         }
     }
     pub fn to_owned(&self) -> OwnedTrailer {
         OwnedTrailer::from(self)
     }
 }
 #[derive(Debug, Clone, Eq, PartialEq)]
 pub struct Token<'a>(&'a str);
 /// A version of the Trailer<'a> which owns it's token and values. Useful for
 /// when you need to carry trailers around in a long lived data structure.
 #[derive(Debug)]
 pub struct OwnedTrailer {
     pub token: OwnedToken,
     pub values: Vec<String>,
 }
 #[derive(Debug)]
 pub struct OwnedToken(String);
 impl<'a> From<&Trailer<'a>> for OwnedTrailer {
     fn from(t: &Trailer<'a>) -> Self {
         OwnedTrailer {
             token: OwnedToken(t.token.0.to_string()),
             values: t.values.iter().map(|v| v.to_string()).collect(),
         }
     }
 }
 impl<'a> From<Trailer<'a>> for OwnedTrailer {
     fn from(t: Trailer<'a>) -> Self {
         (&t).into()
     }
 }
 impl<'a> From<&'a OwnedTrailer> for Trailer<'a> {
     fn from(t: &'a OwnedTrailer) -> Self {
         Trailer {
             token: Token(t.token.0.as_str()),
             values: t.values.iter().map(Cow::from).collect(),
         }
     }
 }
 impl Deref for OwnedToken {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 #[derive(Debug, Error)]
 #[non_exhaustive]
 pub enum InvalidToken {
     #[error("trailing characters: '{0}'")]
     Trailing(String),
     #[error(transparent)]
     Parse(#[from] nom::Err<nom::error::Error<String>>),
 }
 impl<'a> TryFrom<&'a str> for Token<'a> {
     type Error = InvalidToken;
     fn try_from(s: &'a str) -> Result<Self, Self::Error> {
         match parser::token(s) {
             Ok((rest, token)) if rest.is_empty() => Ok(token),
             Ok((trailing, _)) => Err(InvalidToken::Trailing(trailing.to_owned())),
             Err(e) => Err(e.to_owned().into()),
         }
     }
 }
 impl Deref for Token<'_> {
     type Target = str;
     fn deref(&self) -> &Self::Target {
         self.0
     }
 }
 pub struct Display<'a> {
     trailer: &'a Trailer<'a>,
     separator: &'a str,
 }
 impl<'a> fmt::Display for Display<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(
             f,
             "{}{}{}",
             self.trailer.token.deref(),
             self.separator,
             self.trailer.values.join("\n  ")
         )
     }
 }
 pub trait Separator<'a> {
     fn sep_for(&self, token: &Token) -> &'a str;
 }
 impl<'a> Separator<'a> for &'a str {
     fn sep_for(&self, _: &Token) -> &'a str {
         self
     }
 }
 impl<'a, F> Separator<'a> for F
 where
     F: Fn(&Token) -> &'a str,
 {
     fn sep_for(&self, token: &Token) -> &'a str {
         self(token)
     }
 }
 pub struct DisplayMany<'a, S> {
     separator: S,
     trailers: &'a [Trailer<'a>],
 }
 impl<'a, S> fmt::Display for DisplayMany<'a, S>
 where
     S: Separator<'a>,
 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         for (i, trailer) in self.trailers.iter().enumerate() {
             if i > 0 {
                 writeln!(f)?
             }
             write!(
                 f,
                 "{}",
                 trailer.display(self.separator.sep_for(&trailer.token))
             )?
         }
         Ok(())
     }
 }
 /// Parse the trailers of the given message. It looks up the last paragraph
 /// of the message and attempts to parse each of its lines as a [Trailer].
 /// Fails if no trailers paragraph is found or if at least one trailer
 /// fails to be parsed.
 pub fn parse<'a>(message: &'a str, separators: &'a str) -> Result<Vec<Trailer<'a>>, Error> {
     let trailers_paragraph =
         match parser::paragraphs(message.trim_end()).map(|(_, ps)| ps.last().cloned()) {
             Ok(None) | Err(_) => return Err(Error::MissingParagraph),
             Ok(Some(p)) => {
                 if p.is_empty() {
                     return Err(Error::MissingParagraph);
                 }
                 p
             },
         };
     match parser::trailers(trailers_paragraph, separators) {
         Ok((rest, trailers)) if rest.is_empty() => Ok(trailers),
         Ok((unparseable, _)) => Err(Error::Trailing(unparseable.to_owned())),
         Err(e) => Err(e.to_owned().into()),
     }
 }
 /// Render a slice of trailers.
 ///
 /// The `separator` can be either a string slice, or a closure which may choose
 /// a different separator for each [`Token`] encountered. Note that multiline
 /// trailers are rendered with a fixed indent, so the result is not
 /// layout-preserving.
 pub fn display<'a, S>(separator: S, trailers: &'a [Trailer<'a>]) -> DisplayMany<'a, S>
 where
     S: Separator<'a>,
 {
     DisplayMany {
         separator,
         trailers,
     }
 }
 pub mod parser {
     use std::borrow::Cow;
     use super::{Token, Trailer};
     use nom::{
         branch::alt,
         bytes::complete::{tag, take_until, take_while1},
         character::complete::{line_ending, not_line_ending, one_of, space0, space1},
         combinator::{map, rest},
         multi::{many0, separated_list1},
         sequence::{delimited, preceded, separated_pair, terminated},
         IResult,
     };
     const EMPTY_LINE: &str = "\n\n";
     pub fn paragraphs(s: &str) -> IResult<&str, Vec<&str>> {
         separated_list1(tag(EMPTY_LINE), paragraph)(s)
     }
     pub fn paragraph(s: &str) -> IResult<&str, &str> {
         alt((take_until(EMPTY_LINE), rest))(s)
     }
     /// Parse all the possible trailers.
     /// It stops when it can no longer parse valid trailers.
     pub fn trailers<'a>(s: &'a str, separators: &'a str) -> IResult<&'a str, Vec<Trailer<'a>>> {
         many0(|s| trailer(s, separators))(s)
     }
     /// Parse a trailer, which can have an inlined or multilined value.
     pub fn trailer<'a>(s: &'a str, separators: &'a str) -> IResult<&'a str, Trailer<'a>> {
         let mut parser = separated_pair(token, |s| separator(separators, s), values);
         let (rest, (token, values)) = parser(s)?;
         Ok((rest, Trailer { token, values }))
     }
     /// Parse a trailer token.
     pub(super) fn token(s: &str) -> IResult<&str, Token> {
         take_while1(|c: char| c.is_alphanumeric() || c == '-')(s)
             .map(|(i, token_str)| (i, Token(token_str)))
     }
     /// Parse the trailer separator, which can be delimited by spaces.
     fn separator<'a>(separators: &'a str, s: &'a str) -> IResult<&'a str, char> {
         delimited(space0, one_of(separators), space0)(s)
     }
     /// Parse the trailer values, which gathers the value after the separator
     /// (if any) and possible following multilined values, indented by a
     /// space.
     fn values(s: &str) -> IResult<&str, Vec<Cow<'_, str>>> {
         let (r, opt_inline_value) = until_eol_or_eof(s)?;
         let (r, mut values) = multiline_values(r)?;
         if !opt_inline_value.is_empty() {
             values.insert(0, opt_inline_value.into())
         }
         Ok((r, values))
     }
     fn multiline_values(s: &str) -> IResult<&str, Vec<Cow<'_, str>>> {
         many0(map(indented_line_contents, Cow::from))(s)
     }
     fn until_eol_or_eof(s: &str) -> IResult<&str, &str> {
         alt((until_eol, rest))(s)
     }
     /// Parse an indented line, i.e, a line that starts with a space.
     /// Extracts the line contents, ignoring the indentation and the
     /// new line character.
     fn indented_line_contents(s: &str) -> IResult<&str, &str> {
         preceded(space1, until_eol_or_eof)(s)
     }
     /// Consume the input until the end of the line, ignoring the new line
     /// character.
     fn until_eol(s: &str) -> IResult<&str, &str> {
         terminated(not_line_ending, line_ending)(s)
     }
 }

deleted git-trailers/t/Cargo.toml

@@ -1,22 +0,0 @@

 [package]
 name = "git-trailers-test"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-or-later"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies]
 assert_matches = "1.5"
 pretty_assertions = "1.1"
 [dev-dependencies.git-trailers]
 path = ".."

deleted git-trailers/t/src/lib.rs

@@ -1,2 +0,0 @@

-	`#[cfg(test)]`
-	`mod tests;`

deleted git-trailers/t/src/tests.rs

@@ -1,155 +0,0 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{borrow::Cow, convert::TryFrom as _, ops::Deref as _};
 use assert_matches::assert_matches;
 use git_trailers::{display, parse, Error, Token, Trailer};
 use pretty_assertions::assert_eq;
 #[test]
 fn parse_message_with_valid_trailers() {
     let msg = r#"Subject
 A multiline
 description.
 Co-authored-by: John Doe <john.doe@test.com>
 Ticket: #42
 Tested-by:
     John <john@test.com>
     Jane <jane@test.com>
 Just-a-token:
 "#;
     assert_eq!(
         parse(msg, ":").unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer(
                 "Tested-by",
                 &["John <john@test.com>", "Jane <jane@test.com>"]
             ),
             new_trailer("Just-a-token", &[]),
         ]
     )
 }
 #[test]
 fn parse_message_trailers_with_custom_separators() {
     let separators = ":=$";
     let msg = r#"Subject
 A multiline
 description.
 Co-authored-by: John Doe <john.doe@test.com>
 Ticket = #42
 Tested-by $User <user@test.com>
     John <john@test.com>
     Jane <jane@test.com>
 "#;
     assert_eq!(
         parse(msg, separators).unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer(
                 "Tested-by",
                 &[
                     "User <user@test.com>",
                     "John <john@test.com>",
                     "Jane <jane@test.com>"
                 ]
             ),
         ]
     )
 }
 #[test]
 fn parse_message_trailers_with_missing_token() {
     let msg = r#"Subject
 Good-trailer: true
 John Doe <john.doe@test.com> # Unparsable token due to missing token"#;
     assert_matches!(
         parse(msg, ":"),
         Err(Error::Trailing(s))
             if s == "John Doe <john.doe@test.com> # Unparsable token due to missing token"
     )
 }
 #[test]
 fn parse_message_trailers_with_invalid_token() {
     let msg = r#"Subject
 Good-trailer: true
 &!#: John Doe <john.doe@test.com> # Unparsable token due to invalid token"#;
     assert_matches!(
         parse(msg, ":"),
         Err(Error::Trailing(s))
             if s == "&!#: John Doe <john.doe@test.com> # Unparsable token due to invalid token"
     )
 }
 #[test]
 fn parse_message_with_only_trailers() {
     let msg = r#"Co-authored-by: John Doe <john.doe@test.com>
 Ticket: #42
 Tested-by: Tester <tester@test.com>
 "#;
     assert_eq!(
         parse(msg, ":").unwrap(),
         vec![
             new_trailer("Co-authored-by", &["John Doe <john.doe@test.com>"]),
             new_trailer("Ticket", &["#42"]),
             new_trailer("Tested-by", &["Tester <tester@test.com>"]),
         ]
     )
 }
 #[test]
 fn parse_empty_message() {
     let msg = "";
     assert_matches!(parse(msg, ":"), Err(Error::MissingParagraph))
 }
 #[test]
 fn display_static() {
     let msg = r#"Tested-by: Alice
   Bob
   Carol
   Dylan
 Acked-by: Eve"#;
     let parsed = parse(msg, ":").unwrap();
     let rendered = format!("{}", display(": ", &parsed));
     assert_eq!(&rendered, msg);
 }
 #[test]
 fn display_dynamic() {
     let msg = r#"Co-authored-by: John Doe <john.doe@test.com>
 Tested-by: Tester <tester@test.com>
 Fixes #42"#;
     let parsed = parse(msg, ":#").unwrap();
     let rendered = format!(
         "{}",
         display(
             |t: &Token| if t.deref() == "Fixes" { " #" } else { ": " },
             &parsed
         )
     );
     assert_eq!(rendered, msg)
 }
 fn new_trailer<'a>(token: &'a str, values: &[&'a str]) -> Trailer<'a> {
     Trailer {
         token: Token::try_from(token).unwrap(),
         values: values.iter().map(|s| Cow::from(*s)).collect(),
     }
 }

deleted link-git/Cargo.toml

@@ -1,64 +0,0 @@

 [package]
 name = "link-git"
 version = "0.1.0"
 authors = ["Kim Altintop <kim@eagain.st>"]
 edition = "2018"
 license = "GPL-3.0-or-later"
 description = "Core git types and functionality"
 [lib]
 doctest = false
 test = false
 [dependencies]
 arc-swap = "1.4.0"
 async-process = "1.1.0"
 async-trait = "0.1"
 blocking = "1.0.2"
 bstr = "0.2"
 futures-lite = "1.12.0"
 futures-util = "0.3.15"
 lazy_static = "1.4.0"
 im = "15.0.0"
 once_cell = "1.10"
 parking_lot = "0.12"
 pin-project = "1.0.7"
 regex = "1.5.4"
 rustc-hash = "1.1.0"
 tempfile = "3.4"
 thiserror = "1.0.30"
 tracing = "0.1"
 versions = "3.0.2"
 # gitoxide
 git-actor = "^0.6.0"
 git-hash = "^0.8.0"
 git-lock = "^1.0.1"
 git-object = "^0.15.1"
 git-odb = "^0.24.0"
 git-ref = "^0.9.0"
 git-traverse = "^0.10.0"
 [dependencies.git-features]
 version = "^0.17.0"
 features = ["progress", "parallel", "zlib-ng-compat"]
 [dependencies.git-pack]
 version = "^0.14.0"
 features = ["object-cache-dynamic", "pack-cache-lru-static", "pack-cache-lru-dynamic"]
 [dependencies.git-packetline]
 version = "^0.12.0"
 features = ["async-io"]
 [dependencies.git-protocol]
 version = "^0.12.0"
 features = ["async-client"]
 # compat
 [dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 optional = true

deleted link-git/src/lib.rs

@@ -1,20 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 #[macro_use]
 extern crate async_trait;
 pub mod odb;
 pub mod protocol;
 pub mod refs;
 pub use refs::db as refdb;
 #[cfg(feature = "git2")]
 pub mod service;
 pub use git_actor as actor;
 pub use git_hash as hash;
 pub use git_lock as lock;
 pub use git_object as object;
 pub use git_traverse as traverse;

deleted link-git/src/odb.rs

@@ -1,51 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use git_hash::oid;
 use thiserror::Error;
 pub mod backend;
 pub mod index;
 pub mod pack;
 pub mod window;
 pub use git_pack::{cache, data::Object};
 #[derive(Debug, Error)]
 pub enum Error {
     #[error(transparent)]
     Packed(#[from] index::error::Lookup<pack::error::Data>),
     #[error(transparent)]
     Loose(#[from] git_odb::loose::find::Error),
 }
 pub struct Odb<I, D> {
     pub loose: backend::Loose,
     pub packed: backend::Packed<I, D>,
 }
 impl<I, D> Odb<I, D>
 where
     I: index::Index,
     D: window::Cache,
 {
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.packed.contains(id.as_ref()) || self.loose.contains(id)
     }
     pub fn find<'a>(
         &self,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl cache::DecodeEntry,
     ) -> Result<Option<Object<'a>>, Error> {
         let id = id.as_ref();
         if self.packed.contains(id) {
             return self.packed.find(id, buf, cache).map_err(Into::into);
         }
         self.loose.try_find(id, buf).map_err(Into::into)
     }
 }

deleted link-git/src/odb/backend.rs

@@ -1,36 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use git_hash::oid;
 use git_pack::{cache::DecodeEntry, data::Object};
 use super::{index, pack, window};
 pub type Loose = git_odb::loose::Store;
 pub struct Packed<I, D> {
     pub index: I,
     pub data: D,
 }
 impl<I, D> Packed<I, D>
 where
     I: index::Index,
     D: window::Cache,
 {
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.index.contains(id)
     }
     pub fn find<'a>(
         &self,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, index::error::Lookup<pack::error::Data>> {
         self.index
             .lookup(|info| self.data.get(info), id, buf, cache)
     }
 }

deleted link-git/src/odb/index.rs

@@ -1,307 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     fs,
     io,
     path::{Path, PathBuf},
     sync::Arc,
 };
 use arc_swap::ArcSwap;
 use git_hash::oid;
 use git_pack::{
     cache::DecodeEntry,
     data::{Object, ResolvedBase},
 };
 use parking_lot::Mutex;
 use tracing::trace;
 use super::pack;
 pub use git_pack::index::File as IndexFile;
 mod metrics;
 pub use metrics::{Metrics, Stats, StatsView};
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     pub enum Discover {
         #[error(transparent)]
         Index(#[from] pack::error::Index),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Lookup<E> {
         #[error(transparent)]
         Lookup(E),
         #[error(transparent)]
         Reload(#[from] Discover),
         #[error(transparent)]
         Decode(#[from] git_pack::data::decode_entry::Error),
     }
 }
 pub trait Index {
     fn contains(&self, id: impl AsRef<oid>) -> bool;
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>;
 }
 /// An [`Index`] which can be shared between threads.
 ///
 /// [`Shared`] assumes that:
 ///
 /// * newer packs are likely to contain recent objects
 /// * lookups tend to favour recent objects
 /// * lookups tend to expect the object to be found (the object id is either
 ///   pointed to by a ref, or linked to by an existing object)
 ///
 /// Thus, it:
 ///
 /// * orders indices found in `GIT_DIR/objects/pack` by modification time, and
 ///   queries the more recent ones first
 /// * attempts to rescan `GIT_DIR/objects/pack` when an object id was _not_
 ///   found (assuming that this is due to a compaction)
 ///
 /// Unless a reload occurs, lookups are lock-free and mostly wait-free. Writes
 /// ([`Shared::push`], [`Shared::reload`]) are guarded by a [`Mutex`].
 // TODO: consecutive lookups also tend to resolve to the same pack, so we could
 // remember the index into the `im::Vector` where we found a match and look
 // there first. This is what libgit2 does, but the heuristic is not necessarily
 // true when `Shared` is shared across multiple concurrent link replication
 // tasks; per-namespace packs are independent pre-compaction.
 pub struct Shared<M> {
     pack_dir: PathBuf,
     indices: ArcSwap<im::Vector<Arc<pack::Index>>>,
     write: Mutex<()>,
     stats: M,
 }
 impl Shared<()> {
     pub fn open(git_dir: impl AsRef<Path>) -> Result<Self, error::Discover> {
         let pack_dir = git_dir.as_ref().join("objects").join("pack");
         let indices = discover(&pack_dir)?;
         Ok(Self {
             pack_dir,
             indices: ArcSwap::new(Arc::new(indices)),
             write: Mutex::new(()),
             stats: (),
         })
     }
 }
 impl<M> Shared<M>
 where
     M: Metrics,
 {
     pub fn with_stats(self) -> Shared<Stats> {
         self.with_metrics(Stats::default())
     }
     pub fn with_metrics<N: Metrics>(self, m: N) -> Shared<N> {
         Shared {
             pack_dir: self.pack_dir,
             indices: self.indices,
             write: self.write,
             stats: m,
         }
     }
     pub fn stats(&self) -> M::Snapshot {
         self.stats.snapshot(self.len())
     }
     /// Add a newly discovered [`pack::Index`].
     ///
     /// This index will be considered first by subsequent lookups. Note that it
     /// is only guaranteed that the index will be visible to readers if it
     /// resides in the `git_dir` this [`Shared`] was initialised with.
     pub fn push(&self, idx: pack::Index) {
         let lock = self.write.lock();
         let mut new = self.indices.load_full();
         Arc::make_mut(&mut new).push_front(Arc::new(idx));
         self.indices.store(new);
         drop(lock);
         self.stats.record_push()
     }
     /// Re-scan the packs directory and replace the in-memory indices with the
     /// result.
     ///
     /// If the application can intercept compaction events, this method can be
     /// used to release memory early. Otherwise it is not required to call this
     /// method, as [`Shared`] manages reloads automatically.
     pub fn reload(&self) -> Result<(), error::Discover> {
         let lock = self.write.lock();
         let indices = discover(&self.pack_dir)?;
         self.indices.store(Arc::new(indices));
         drop(lock);
         self.stats.record_reload();
         Ok(())
     }
     pub fn is_empty(&self) -> bool {
         self.indices.load().is_empty()
     }
     pub fn len(&self) -> usize {
         self.indices.load().len()
     }
     fn contains(&self, id: impl AsRef<oid>) -> bool {
         for i in 0..2 {
             for idx in self.indices.load().iter() {
                 if idx.contains(&id) {
                     self.stats.record_hit();
                     return true;
                 }
             }
             if i == 0 && self.reload().is_err() {
                 self.stats.record_miss();
                 return false;
             }
         }
         self.stats.record_miss();
         false
     }
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
     {
         for i in 0..2 {
             for idx in self.indices.load().iter() {
                 if let Some(ofs) = idx.ofs(&id) {
                     self.stats.record_hit();
                     return load_obj(ofs, idx, pack_cache, buf, cache).map(Some);
                 }
             }
             if i == 0 {
                 self.reload()?;
             }
         }
         self.stats.record_miss();
         Ok(None)
     }
 }
 fn load_obj<'a, F, E>(
     ofs: u64,
     idx: &pack::Index,
     pack_cache: F,
     buf: &'a mut Vec<u8>,
     cache: &mut impl DecodeEntry,
 ) -> Result<Object<'a>, error::Lookup<E>>
 where
     F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
 {
     let data = pack_cache(&idx.info).map_err(error::Lookup::Lookup)?;
     let pack = data.file();
     let entry = pack.entry(ofs);
     let obj = pack
         .decode_entry(
             entry,
             buf,
             |id, _| idx.ofs(id).map(|ofs| ResolvedBase::InPack(pack.entry(ofs))),
             cache,
         )
         .map(move |out| Object {
             kind: out.kind,
             data: buf.as_slice(),
             pack_location: None,
         })?;
     Ok(obj)
 }
 fn discover(pack_dir: impl AsRef<Path>) -> Result<im::Vector<Arc<pack::Index>>, error::Discover> {
     let pack_dir = pack_dir.as_ref();
     let pack_dir_disp = pack_dir.display();
     trace!("discovering packs at {}", pack_dir_disp);
     match fs::read_dir(pack_dir) {
         Ok(iter) => {
             let mut paths = Vec::new();
             for entry in iter {
                 let entry = entry?;
                 let path = entry.path();
                 trace!("{}", path.display());
                 let meta = entry.metadata()?;
                 if meta.file_type().is_file() && path.extension().unwrap_or_default() == "idx" {
                     let mtime = meta.modified()?;
                     paths.push((path, mtime));
                 }
             }
             paths.sort_by(|(_, mtime_a), (_, mtime_b)| mtime_a.cmp(mtime_b));
             let indices = paths
                 .into_iter()
                 .rev()
                 .map(|(path, _)| Ok(pack::Index::open(path).map(Arc::new)?))
                 .collect::<Result<_, error::Discover>>()?;
             Ok(indices)
         },
         // It's not an error if the directory doesn't exist, the repository
         // could contain only loose objects
         Err(e) if e.kind() == io::ErrorKind::NotFound => {
             trace!("not a directory: {}", pack_dir_disp);
             Ok(im::Vector::new())
         },
         Err(e) => Err(e.into()),
     }
 }
 impl<M> Index for Shared<M>
 where
     M: Metrics,
 {
     fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.contains(id)
     }
     fn lookup<'a, F, E>(
         &self,
         pack_cache: F,
         id: impl AsRef<oid>,
         buf: &'a mut Vec<u8>,
         cache: &mut impl DecodeEntry,
     ) -> Result<Option<Object<'a>>, error::Lookup<E>>
     where
         F: FnOnce(&pack::Info) -> Result<Arc<pack::Data>, E>,
     {
         self.lookup(pack_cache, id, buf, cache)
     }
 }

deleted link-git/src/odb/index/metrics.rs

@@ -1,80 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::atomic::{AtomicUsize, Ordering};
 pub struct StatsView {
     /// Total number of times a lookup was successful.
     pub hits: usize,
     /// Total number of times a lookup was unsuccessful.
     pub misses: usize,
     /// Total number of times an index was added explicitly via
     /// [`super::Shared::push`].
     pub pushes: usize,
     /// Total number of reloads via [`super::Shared::reload`].
     pub reloads: usize,
     /// Number of [`crate::odb::pack::Index`]es currently held.
     pub indices: usize,
 }
 #[derive(Default)]
 pub struct Stats {
     hits: AtomicUsize,
     misses: AtomicUsize,
     pushes: AtomicUsize,
     reloads: AtomicUsize,
 }
 pub trait Metrics {
     type Snapshot;
     fn record_hit(&self);
     fn record_miss(&self);
     fn record_push(&self);
     fn record_reload(&self);
     fn snapshot(&self, indices: usize) -> Self::Snapshot;
 }
 impl Metrics for Stats {
     type Snapshot = StatsView;
     fn record_hit(&self) {
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     fn record_miss(&self) {
         self.misses.fetch_add(1, Ordering::Relaxed);
     }
     fn record_push(&self) {
         self.pushes.fetch_add(1, Ordering::Relaxed);
     }
     fn record_reload(&self) {
         self.reloads.fetch_add(1, Ordering::Relaxed);
     }
     fn snapshot(&self, indices: usize) -> Self::Snapshot {
         StatsView {
             hits: self.hits.load(Ordering::Relaxed),
             misses: self.misses.load(Ordering::Relaxed),
             pushes: self.pushes.load(Ordering::Relaxed),
             reloads: self.reloads.load(Ordering::Relaxed),
             indices,
         }
     }
 }
 impl Metrics for () {
     type Snapshot = ();
     fn record_hit(&self) {}
     fn record_miss(&self) {}
     fn record_push(&self) {}
     fn record_reload(&self) {}
     fn snapshot(&self, _: usize) -> Self::Snapshot {}
 }

deleted link-git/src/odb/pack.rs

@@ -1,138 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     path::{Path, PathBuf},
     sync::atomic::{AtomicUsize, Ordering},
 };
 use git_hash::{oid, ObjectId};
 use git_pack::{data, index};
 use rustc_hash::FxHasher;
 use tracing::warn;
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     #[error("failed to load pack data from {path:?}")]
     pub struct Data {
         pub path: PathBuf,
         pub source: data::header::decode::Error,
     }
     #[derive(Debug, Error)]
     #[error("failed to load pack index from {path:?}")]
     pub struct Index {
         pub path: PathBuf,
         pub source: index::init::Error,
     }
 }
 pub struct Data {
     pub hash: u64,
     hits: AtomicUsize,
     file: data::File,
 }
 impl Data {
     pub fn hit(&self) {
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     pub fn hits(&self) -> usize {
         self.hits.load(Ordering::Relaxed)
     }
     pub fn file(&self) -> &data::File {
         &self.file
     }
 }
 impl AsRef<data::File> for Data {
     fn as_ref(&self) -> &data::File {
         self.file()
     }
 }
 #[derive(Clone, PartialEq, Eq)]
 pub struct Info {
     pub(super) hash: u64,
     pub data_path: PathBuf,
 }
 impl Info {
     pub fn data(&self) -> Result<Data, error::Data> {
         let file = data::File::at(&self.data_path).map_err(|source| error::Data {
             path: self.data_path.clone(),
             source,
         })?;
         Ok(Data {
             hash: self.hash,
             hits: AtomicUsize::new(0),
             file,
         })
     }
 }
 pub struct Index {
     pub info: Info,
     file: index::File,
 }
 impl Index {
     pub fn open(path: impl AsRef<Path>) -> Result<Self, error::Index> {
         let path = path.as_ref();
         let file = index::File::at(path).map_err(|source| error::Index {
             path: path.to_path_buf(),
             source,
         })?;
         let data_path = path.with_extension("pack");
         let hash = {
             let file_name = path
                 .file_name()
                 .expect("must have a file name, we opened it")
                 .to_string_lossy();
             // XXX: inexplicably, gitoxide omits the "pack-" prefix
             let sha_hex = file_name.strip_prefix("pack-").unwrap_or(&file_name);
             match ObjectId::from_hex(&sha_hex.as_bytes()[..40]) {
                 Err(e) => {
                     warn!(
                         "unconventional pack name {:?}, falling back to fxhash: {}",
                         path, e
                     );
                     hash(path)
                 },
                 Ok(oid) => {
                     let mut buf = [0u8; 8];
                     buf.copy_from_slice(&oid.sha1()[..8]);
                     u64::from_be_bytes(buf)
                 },
             }
         };
         let info = Info { hash, data_path };
         Ok(Self { file, info })
     }
     pub fn contains(&self, id: impl AsRef<oid>) -> bool {
         self.file.lookup(id).is_some()
     }
     pub fn ofs(&self, id: impl AsRef<oid>) -> Option<u64> {
         self.file
             .lookup(id)
             .map(|idx| self.file.pack_offset_at_index(idx))
     }
 }
 fn hash(p: &Path) -> u64 {
     use std::hash::{Hash as _, Hasher as _};
     let mut hasher = FxHasher::default();
     p.hash(&mut hasher);
     hasher.finish()
 }

deleted link-git/src/odb/window.rs

@@ -1,183 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::Arc;
 use arc_swap::{ArcSwap, Guard};
 use parking_lot::Mutex;
 use super::pack;
 mod metrics;
 pub use metrics::{Metrics, Stats, StatsView};
 /// A threadsafe, shareable cache of packfiles.
 pub trait Cache {
     type Stats;
     fn stats(&self) -> Self::Stats;
     fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data>;
 }
 impl<M, const B: usize, const S: usize> Cache for Fixed<M, B, S>
 where
     M: Metrics,
 {
     type Stats = M::Snapshot;
     fn stats(&self) -> Self::Stats {
         self.stats()
     }
     fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data> {
         self.get(info)
     }
 }
 /// 128 open files
 pub type Small<S> = Fixed<S, 16, 8>;
 /// 512 open files
 pub type Medium<S> = Fixed<S, 32, 16>;
 /// 1024 open files
 pub type Large<S> = Fixed<S, 64, 16>;
 /// 2048 open files
 pub type XLarge<S> = Fixed<S, 128, 16>;
 /// A fixed-size [`Cache`].
 ///
 /// [`Fixed`] is essentially a very simple, fixed-capacity hashtable. When a
 /// pack (data-) file is requested via [`Cache::get`], the file is loaded
 /// (typically `mmap`ed) from disk if it is not already in the cache. Otherwise,
 /// a pointer to the already loaded file is returned. Old entries are replaced
 /// on an approximate LRU basis when the cache becomes full (this means that old
 /// entries are **not** evicted when there is still space).
 ///
 /// The implementation is a somewhat dumbed-down version of JGit's
 /// `WindowCache`. The main differences are that the table buckets are of fixed
 /// size (`SLOTS`), instead of a linked list. This means that the cache does not
 /// allow to (temporarily) commit more entries than its nominal capacity.
 ///
 /// Reading cached values is lock-free and mostly wait-free. Modifications are
 /// guarded by locks on individual buckets; if a cache miss occurs, multiple
 /// threads requesting the same entry will be blocked until one of them
 /// succeeded loading the data and updating the cache. Writers will _not_,
 /// however, contend with readers (unlike `RwLock`).
 ///
 /// This favours usage patterns where different threads tend to request disjoint
 /// sets of packfiles, and of course their hashes colliding relatively
 /// infrequently.
 pub struct Fixed<M, const BUCKETS: usize, const SLOTS: usize> {
     entries: [ArcSwap<[Option<Arc<pack::Data>>; SLOTS]>; BUCKETS],
     locks: [Mutex<()>; BUCKETS],
     stats: M,
 }
 trait AssertSendSync: Send + Sync {}
 impl<M, const B: usize, const S: usize> AssertSendSync for Fixed<M, B, S> where M: Send + Sync {}
 impl<M, const B: usize, const S: usize> AsRef<Fixed<M, B, S>> for Fixed<M, B, S> {
     fn as_ref(&self) -> &Fixed<M, B, S> {
         self
     }
 }
 impl<const B: usize, const S: usize> Default for Fixed<(), B, S> {
     fn default() -> Self {
         Self {
             entries: [(); B].map(|_| ArcSwap::new(Arc::new([(); S].map(|_| None)))),
             locks: [(); B].map(|_| Mutex::new(())),
             stats: (),
         }
     }
 }
 impl<M, const B: usize, const S: usize> Fixed<M, B, S>
 where
     M: Metrics,
 {
     pub fn with_stats(self) -> Fixed<Stats, B, S> {
         self.with_metrics(Stats::default())
     }
     pub fn with_metrics<N: Metrics>(self, m: N) -> Fixed<N, B, S> {
         Fixed {
             entries: self.entries,
             locks: self.locks,
             stats: m,
         }
     }
     pub fn stats(&self) -> M::Snapshot {
         let open_files = self
             .entries
             .iter()
             .map(|bucket| bucket.load().iter().flatten().count())
             .sum();
         self.stats.snapshot(open_files)
     }
     pub fn get(&self, info: &pack::Info) -> Result<Arc<pack::Data>, pack::error::Data> {
         let idx = info.hash as usize % self.entries.len();
         let bucket = self.entries[idx].load();
         for entry in bucket.iter().flatten() {
             if entry.hash == info.hash {
                 self.stats.record_hit();
                 entry.hit();
                 return Ok(Arc::clone(entry));
             }
         }
         drop(bucket);
         self.stats.record_miss();
         // Cache miss, try to load the data file
         let lock = self.locks[idx].lock();
         // Did someone else win the race for the lock?
         let bucket = self.entries[idx].load();
         for entry in bucket.iter().flatten() {
             if entry.hash == info.hash {
                 self.stats.record_hit();
                 entry.hit();
                 return Ok(Arc::clone(entry));
             }
         }
         // No, proceed
         self.stats.record_load();
         let data = Arc::new(info.data()?);
         // Find an empty slot, or swap with the least popular
         let mut access = usize::MAX;
         let mut evict = 0;
         for (i, e) in bucket.iter().enumerate() {
             match e {
                 Some(entry) => {
                     let hits = entry.hits();
                     if hits < access {
                         access = hits;
                         evict = i;
                     }
                 },
                 None => {
                     evict = i;
                     break;
                 },
             }
         }
         let mut entries = Guard::into_inner(bucket);
         {
             // This costs `SLOTS` refcount increments if the slot is currently
             // borrowed.
             let mutti = Arc::make_mut(&mut entries);
             mutti[evict] = Some(Arc::clone(&data));
         }
         self.entries[idx].store(entries);
         drop(lock);
         data.hit();
         Ok(data)
     }
 }

deleted link-git/src/odb/window/metrics.rs

@@ -1,79 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::sync::atomic::{AtomicUsize, Ordering};
 use tracing::trace;
 pub struct StatsView {
     /// Total number of times the requested data was found in the cache.
     pub cache_hits: usize,
     /// Total number of times the requested data was not found in the cache.
     ///
     /// Note that a cache hit can occur after a miss if another thread was
     /// faster to fill in the missing entry. Thus, `cache_hits + cache_misses`
     /// does not necessarily sum up to the number of cache accesses.
     pub cache_misses: usize,
     /// Total number of times a pack file was attempted to be loaded from disk
     /// (incl. failed attempts).
     pub file_loads: usize,
     /// Total number of pack files the cache holds on to.
     pub open_files: usize,
 }
 #[derive(Default)]
 pub struct Stats {
     hits: AtomicUsize,
     miss: AtomicUsize,
     load: AtomicUsize,
 }
 pub trait Metrics {
     type Snapshot;
     fn record_hit(&self);
     fn record_miss(&self);
     fn record_load(&self);
     fn snapshot(&self, open_files: usize) -> Self::Snapshot;
 }
 impl Metrics for Stats {
     type Snapshot = StatsView;
     fn record_hit(&self) {
         trace!("cache hit");
         self.hits.fetch_add(1, Ordering::Relaxed);
     }
     fn record_miss(&self) {
         trace!("cache miss");
         self.miss.fetch_add(1, Ordering::Relaxed);
     }
     fn record_load(&self) {
         trace!("pack load");
         self.load.fetch_add(1, Ordering::Relaxed);
     }
     fn snapshot(&self, open_files: usize) -> Self::Snapshot {
         StatsView {
             cache_hits: self.hits.load(Ordering::Relaxed),
             cache_misses: self.miss.load(Ordering::Relaxed),
             file_loads: self.load.load(Ordering::Relaxed),
             open_files,
         }
     }
 }
 impl Metrics for () {
     type Snapshot = ();
     fn record_hit(&self) {}
     fn record_miss(&self) {}
     fn record_load(&self) {}
     fn snapshot(&self, _: usize) -> Self::Snapshot {}
 }

deleted link-git/src/protocol.rs

@@ -1,30 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use bstr::ByteSlice as _;
 use git_protocol::transport::client;
 use versions::Version;
 pub mod fetch;
 pub mod ls;
 pub mod packwriter;
 pub mod take;
 pub mod transport;
 pub mod upload_pack;
 pub use fetch::{fetch, Ref};
 pub use ls::ls_refs;
 pub use packwriter::PackWriter;
 pub use upload_pack::upload_pack;
 pub use git_hash::{oid, ObjectId};
 fn remote_git_version(caps: &client::Capabilities) -> Option<Version> {
     let agent = caps.capability("agent").and_then(|cap| {
         cap.value()
             .and_then(|bs| bs.to_str().map(|s| s.to_owned()).ok())
     })?;
     Version::new(agent.strip_prefix("git/")?)
 }

deleted link-git/src/protocol/fetch.rs

@@ -1,290 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     future::Future,
     io,
     mem,
     pin::Pin,
     sync::{
         atomic::{AtomicBool, Ordering},
         Arc,
     },
     task::{Context, Poll},
 };
 use bstr::{BString, ByteSlice as _};
 use futures_lite::{
     future,
     io::{AsyncBufRead, AsyncRead, AsyncWrite},
 };
 use git_features::progress::{self, Progress};
 use git_protocol::{
     fetch::{response, Action, Arguments, Delegate, DelegateBlocking, LsRefsAction, Response},
     transport::client,
 };
 use once_cell::sync::Lazy;
 use pin_project::{pin_project, pinned_drop};
 use versions::Version;
 pub use git_hash::ObjectId;
 pub use git_protocol::fetch::Ref;
 use super::{packwriter::PackWriter, remote_git_version, transport};
 // Work around `git-upload-pack` not handling namespaces properly,
 //
 // cf. https://lore.kernel.org/git/CD2XNXHACAXS.13J6JTWZPO1JA@schmidt/
 // Fixed in `git.git` 1ab13eb, which should land in 2.34
 //
 // Based on testing with git 2.25.1 in Ubuntu 20.04, this workaround is
 // not needed. Hence the checked version is lowered to 2.25.0.
 fn must_namespace_want_ref(caps: &client::Capabilities) -> bool {
     static FIXED_AFTER: Lazy<Version> = Lazy::new(|| Version::new("2.25.0").unwrap());
     remote_git_version(caps)
         .map(|version| version <= *FIXED_AFTER)
         .unwrap_or(false)
 }
 #[derive(Debug)]
 pub struct Options {
     /// The remote (logical) repository to fetch from.
     ///
     /// Normally, this is the path to a repo on the remote side (eg.
     /// `/git.git`). `radicle-link` serves only a single namespaced repo, so
     /// this value should be the name of a namespace.
     pub repo: BString,
     /// [Extra Parameters][extra] to send with the initial transport header.
     ///
     /// [extra]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt#n52
     pub extra_params: Vec<(String, Option<String>)>,
     /// [`ObjectId`]s to send as `want` lines.
     pub wants: Vec<ObjectId>,
     /// [`ObjectId`]s to send as `have` lines.
     pub haves: Vec<ObjectId>,
     /// Known refs to ask the server to include in the packfile.
     pub want_refs: Vec<BString>,
 }
 /// Result of a succesful [`fetch`].
 #[derive(Debug)]
 pub struct Outputs<T> {
     /// The `wanted-refs` as acknowledged by the server.
     pub wanted_refs: Vec<Ref>,
     /// If a packfile was received successfully, some info about it.
     pub pack: Option<T>,
 }
 impl<T> Default for Outputs<T> {
     fn default() -> Self {
         Self {
             wanted_refs: Vec::new(),
             pack: None,
         }
     }
 }
 /// [`Delegate`] driving the fetch end of the [pack protocol].
 ///
 /// [pack protocol]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt
 pub struct Fetch<P, O> {
     opt: Options,
     pack_writer: P,
     out: Outputs<O>,
     need_namespaced_want_ref: bool,
 }
 impl<P, O> Fetch<P, O> {
     pub fn new(opt: Options, pack_writer: P) -> Self {
         Self {
             opt,
             pack_writer,
             out: Outputs::default(),
             need_namespaced_want_ref: false,
         }
     }
     pub fn outputs(&self) -> &Outputs<O> {
         &self.out
     }
     pub fn take_outputs(&mut self) -> Outputs<O> {
         mem::take(&mut self.out)
     }
 }
 impl<P: PackWriter> DelegateBlocking for Fetch<P, P::Output> {
     fn handshake_extra_parameters(&self) -> Vec<(String, Option<String>)> {
         self.opt.extra_params.clone()
     }
     fn prepare_ls_refs(
         &mut self,
         _: &client::Capabilities,
         _: &mut Vec<BString>,
         _: &mut Vec<(&str, Option<&str>)>,
     ) -> io::Result<LsRefsAction> {
         Ok(LsRefsAction::Skip)
     }
     fn prepare_fetch(
         &mut self,
         _: git_protocol::transport::Protocol,
         caps: &client::Capabilities,
         _: &mut Vec<(&str, Option<&str>)>,
         _: &[Ref],
     ) -> io::Result<Action> {
         if !self.opt.want_refs.is_empty() && !remote_supports_ref_in_want(caps) {
             return Err(io::Error::new(
                 io::ErrorKind::Unsupported,
                 "`want-ref`s given, but server does not support `ref-in-want`",
             ));
         }
         if self.opt.wants.is_empty() && self.opt.want_refs.is_empty() {
             return Err(io::Error::new(
                 io::ErrorKind::InvalidData,
                 "`fetch` is empty",
             ));
         }
         self.need_namespaced_want_ref = must_namespace_want_ref(caps);
         Ok(Action::Continue)
     }
     fn negotiate(
         &mut self,
         _: &[Ref],
         args: &mut Arguments,
         _: Option<&Response>,
     ) -> io::Result<Action> {
         for oid in &self.opt.wants {
             args.want(oid);
         }
         for oid in &self.opt.haves {
             args.have(oid)
         }
         for name in &self.opt.want_refs {
             if self.need_namespaced_want_ref {
                 let want_ref = format!("refs/namespaces/{}/{}", self.opt.repo, name);
                 args.want_ref(BString::from(want_ref).as_bstr());
             } else {
                 args.want_ref(name.as_bstr());
             }
         }
         // send done, as we don't bother with further negotiation
         Ok(Action::Cancel)
     }
 }
 #[async_trait(?Send)]
 impl<P: PackWriter> Delegate for Fetch<P, P::Output> {
     async fn receive_pack(
         &mut self,
         pack: impl AsyncBufRead + Unpin + 'async_trait,
         prog: impl Progress,
         _: &[Ref],
         resp: &Response,
     ) -> io::Result<()> {
         // Strip any namespaces leaked by the other end due to workarounds
         let namespace = format!("refs/namespaces/{}/", self.opt.repo);
         self.out.wanted_refs.extend(resp.wanted_refs().iter().map(
             |response::WantedRef { id, path }| {
                 Ref::Direct {
                     path: path
                         .strip_prefix(namespace.as_bytes())
                         .map(BString::from)
                         .unwrap_or_else(|| path.clone()),
                     object: *id,
                 }
             },
         ));
         let out = self.pack_writer.write_pack(pack, prog)?;
         self.out.pack = Some(out);
         Ok(())
     }
 }
 /// Future created by the [`fetch`] function.
 ///
 /// Ensures that a running inner [`PackWriter`] is cancelled when the
 /// [`Fetching`] future is dropped without also dropping the [`AsyncRead`] data
 /// source.
 #[pin_project(PinnedDrop)]
 struct Fetching<T> {
     stop: Arc<AtomicBool>,
     #[pin]
     task: T,
 }
 #[pinned_drop]
 impl<T> PinnedDrop for Fetching<T> {
     fn drop(self: Pin<&mut Self>) {
         self.stop.store(true, Ordering::Release)
     }
 }
 impl<T> Future for Fetching<T>
 where
     T: Future,
 {
     type Output = T::Output;
     fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
         self.project().task.poll(cx)
     }
 }
 pub fn fetch<B, P, R, W>(
     opt: Options,
     build_pack_writer: B,
     recv: R,
     send: W,
 ) -> impl Future<Output = io::Result<Outputs<P::Output>>>
 where
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
     R: AsyncRead + Unpin + Send + 'static,
     W: AsyncWrite + Unpin + Send + 'static,
 {
     let stop = Arc::new(AtomicBool::new(false));
     let task = blocking::unblock({
         let mut conn = transport::Stateless::new(opt.repo.clone(), recv, send);
         let pack_writer = build_pack_writer(Arc::clone(&stop));
         move || {
             let mut delegate = Fetch::new(opt, pack_writer);
             future::block_on(git_protocol::fetch(
                 &mut conn,
                 &mut delegate,
                 |_| unreachable!("credentials helper requested"),
                 progress::Discard,
                 git_protocol::FetchConnection::AllowReuse,
             ))
             .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
             Ok(delegate.out)
         }
     });
     Fetching { stop, task }
 }
 fn remote_supports_ref_in_want(caps: &client::Capabilities) -> bool {
     caps.capability("fetch")
         .and_then(|cap| cap.supports("ref-in-want"))
         .unwrap_or(false)
 }

deleted link-git/src/protocol/ls.rs

@@ -1,151 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::io;
 use bstr::{BString, ByteVec as _};
 use futures_lite::io::{AsyncBufRead, AsyncRead, AsyncWrite};
 use git_features::progress::{self, Progress};
 use git_protocol::{
     fetch::{Action, Arguments, Delegate, DelegateBlocking, LsRefsAction, Response},
     transport::client,
 };
 use once_cell::sync::Lazy;
 use versions::Version;
 pub use git_protocol::fetch::Ref;
 use super::{remote_git_version, transport};
 // Work around `git-upload-pack` not handling namespaces properly
 //
 // cf. https://lore.kernel.org/git/pMV5dJabxOBTD8kJBaPuWK0aS6OJhRQ7YFGwfhPCeSJEbPDrIFBza36nXBCgUCeUJWGmpjPI1rlOGvZJEh71Ruz4SqljndUwOCoBUDRHRDU=@eagain.st/
 //
 // Based on testing with git 2.25.1 in Ubuntu 20.04, this workaround is
 // not needed. Hence the checked version is lowered to 2.25.0.
 fn must_namespace(caps: &client::Capabilities) -> bool {
     static MIN_GIT_VERSION_NAMESPACES: Lazy<Version> =
         Lazy::new(|| Version::new("2.25.0").unwrap());
     remote_git_version(caps)
         .map(|version| version < *MIN_GIT_VERSION_NAMESPACES)
         .unwrap_or(false)
 }
 #[derive(Debug)]
 pub struct Options {
     /// The remote (logical) repository to fetch from.
     ///
     /// Normally, this is the path to a repo on the remote side (eg.
     /// `/git.git`). `radicle-link` serves only a single namespaced repo, so
     /// this value should be the name of a namespace.
     pub repo: BString,
     /// [Extra Parameters][extra] to send with the initial transport header.
     ///
     /// [extra]: https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/technical/pack-protocol.txt#n52
     pub extra_params: Vec<(String, Option<String>)>,
     /// Prefixes of refs to ask the server to advertise via `ls-refs`.
     ///
     /// If the [`Vec`] is empty, the server is asked to return all refs it knows
     /// about. Otherwise, the server is asked to only return refs matching
     /// the given prefixes.
     pub ref_prefixes: Vec<BString>,
 }
 /// [`Delegate`] for running a stateless `ls-refs` command.
 pub struct LsRefs {
     opt: Options,
     out: Vec<Ref>,
 }
 impl LsRefs {
     pub fn new(opt: Options) -> Self {
         Self {
             opt,
             out: Vec::new(),
         }
     }
 }
 impl DelegateBlocking for LsRefs {
     fn handshake_extra_parameters(&self) -> Vec<(String, Option<String>)> {
         self.opt.extra_params.clone()
     }
     fn prepare_ls_refs(
         &mut self,
         caps: &client::Capabilities,
         args: &mut Vec<BString>,
         _: &mut Vec<(&str, Option<&str>)>,
     ) -> io::Result<LsRefsAction> {
         let must_namespace = must_namespace(caps);
         for prefix in &self.opt.ref_prefixes {
             let mut arg = BString::from("ref-prefix ");
             if must_namespace {
                 arg.push_str("refs/namespaces/");
                 arg.push_str(&self.opt.repo);
                 arg.push_char('/');
             }
             arg.push_str(prefix);
             args.push(arg)
         }
         Ok(LsRefsAction::Continue)
     }
     fn prepare_fetch(
         &mut self,
         _: git_protocol::transport::Protocol,
         _: &client::Capabilities,
         _: &mut Vec<(&str, Option<&str>)>,
         refs: &[Ref],
     ) -> io::Result<Action> {
         self.out.extend_from_slice(refs);
         Ok(Action::Cancel)
     }
     fn negotiate(
         &mut self,
         _: &[Ref],
         _: &mut Arguments,
         _: Option<&Response>,
     ) -> io::Result<Action> {
         unreachable!("`negotiate` called even though no `fetch` command was sent")
     }
 }
 #[async_trait(?Send)]
 impl Delegate for LsRefs {
     async fn receive_pack(
         &mut self,
         _: impl AsyncBufRead + Unpin + 'async_trait,
         _: impl Progress,
         _: &[Ref],
         _: &Response,
     ) -> io::Result<()> {
         unreachable!("`receive_pack` called even though no `fetch` command was sent")
     }
 }
 pub async fn ls_refs<R, W>(opt: Options, recv: R, send: W) -> io::Result<Vec<Ref>>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let mut conn = transport::Stateless::new(opt.repo.clone(), recv, send);
     let mut delegate = LsRefs::new(opt);
     git_protocol::fetch(
         &mut conn,
         &mut delegate,
         |_| unreachable!("credentials helper requested"),
         progress::Discard,
         git_protocol::FetchConnection::AllowReuse,
     )
     .await
     .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
     Ok(delegate.out)
 }

deleted link-git/src/protocol/packwriter.rs

@@ -1,271 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     io,
     path::{Path, PathBuf},
     sync::{
         atomic::{AtomicBool, Ordering},
         Arc,
     },
 };
 use futures_lite::io::{AsyncBufRead, BlockOn};
 use git_features::progress::Progress;
 use git_hash::ObjectId;
 use git_odb::{self as odb, pack};
 use super::take::TryTake;
 #[cfg(feature = "git2")]
 pub use libgit::Libgit;
 /// What to do with the `packfile` response.
 ///
 /// _This is mostly the same as [`git_protocol::fetch::Delegate`], but without
 /// incurring the [`git_protocol::fetch::DelegateBlocking`] super-trait
 /// constraint. We can simply make [`crate::protocol::fetch::Fetch`] parametric
 /// over the packfile sink._
 pub trait PackWriter {
     type Output;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         progress: impl Progress,
     ) -> io::Result<Self::Output>;
 }
 #[derive(Clone, Copy, Debug)]
 pub struct Options {
     /// How many threads the packfile indexer is allowed to spawn. `None` means
     /// unlimited.
     pub max_indexer_threads: Option<usize>,
     /// The maximum size in bytes of the packfile.
     ///
     /// If the remote sends a larger file, the transfer will be aborted.
     pub max_pack_bytes: u64,
 }
 impl Default for Options {
     fn default() -> Self {
         Self {
             max_indexer_threads: Some(1),
             max_pack_bytes: u64::MAX,
         }
     }
 }
 #[cfg(feature = "git2")]
 pub mod libgit {
     use super::*;
     #[derive(Clone, Copy, Debug)]
     pub struct PackReceived {
         pub objects: usize,
         pub local_objects: usize,
         pub deltas: usize,
     }
     impl From<git2::Progress<'_>> for PackReceived {
         fn from(p: git2::Progress<'_>) -> Self {
             Self {
                 objects: p.indexed_objects(),
                 local_objects: p.local_objects(),
                 deltas: p.indexed_deltas(),
             }
         }
     }
     pub struct Libgit {
         opt: Options,
         repo: git2::Repository,
         stop: Arc<AtomicBool>,
     }
     impl Libgit {
         pub fn new(opt: Options, repo: git2::Repository, stop: Arc<AtomicBool>) -> Self {
             Self { opt, repo, stop }
         }
         fn guard_cancelled(&self) -> io::Result<()> {
             if self.stop.load(Ordering::Acquire) {
                 Err(io::Error::new(io::ErrorKind::Interrupted, "cancelled"))
             } else {
                 Ok(())
             }
         }
     }
     impl PackWriter for Libgit {
         type Output = Option<PackReceived>;
         fn write_pack(
             &self,
             pack: impl AsyncBufRead + Unpin,
             _: impl Progress,
         ) -> io::Result<Self::Output> {
             let mut out = None;
             let odb = self.repo.odb().map_err(io_error)?;
             let mut writer = odb.packwriter().map_err(io_error)?;
             self.guard_cancelled()?;
             io::copy(
                 &mut BlockOn::new(TryTake::new(pack, self.opt.max_pack_bytes)),
                 &mut writer,
             )?;
             self.guard_cancelled()?;
             writer
                 .progress(|p| {
                     out = Some(p.to_owned());
                     true
                 })
                 .commit()
                 .map(|_| ())
                 .map_err(io_error)?;
             // Convince borrowchk that `out` can not possibly be borrowed anymore
             drop(writer);
             Ok(out.map(Into::into))
         }
     }
     fn io_error(e: git2::Error) -> io::Error {
         io::Error::new(io::ErrorKind::Other, e)
     }
 }
 pub type PackReceived = pack::bundle::write::Outcome;
 /// A lookup function to help "thicken" thin packs by finding missing base
 /// objects.
 ///
 /// The impl provided for [`odb::linked::Store`] does not use any pack caching.
 pub trait Thickener {
     fn find_object<'a>(&self, id: ObjectId, buf: &'a mut Vec<u8>)
         -> Option<pack::data::Object<'a>>;
 }
 impl Thickener for odb::linked::Store {
     fn find_object<'a>(
         &self,
         id: ObjectId,
         buf: &'a mut Vec<u8>,
     ) -> Option<pack::data::Object<'a>> {
         use git_odb::FindExt as _;
         self.find(id, buf, &mut pack::cache::Never).ok()
     }
 }
 /// A factory spewing out new [`Thickener`]s with static lifetimes.
 ///
 /// `gitoxide` doesn't currently allow us to initialise thickening lazily (the
 /// pack file may not be thin after all), but requires a static lookup function.
 /// Instead of initialising a new [`odb::linked::Store`] for every pack stream,
 /// users may share a pre-initialised object database provided appropriate
 /// thread safety measures.
 pub trait BuildThickener {
     type Error: std::error::Error + Send + Sync + 'static;
     type Thick: Thickener + 'static;
     fn build_thickener(&self) -> Result<Self::Thick, Self::Error>;
 }
 pub struct StandardThickener {
     git_dir: PathBuf,
 }
 impl StandardThickener {
     pub fn new(git_dir: impl Into<PathBuf>) -> Self {
         let git_dir = git_dir.into();
         Self { git_dir }
     }
 }
 impl BuildThickener for StandardThickener {
     type Error = odb::linked::init::Error;
     type Thick = odb::linked::Store;
     fn build_thickener(&self) -> Result<Self::Thick, Self::Error> {
         odb::linked::Store::at(self.git_dir.join("objects"))
     }
 }
 /// The default [`PackWriter`].
 ///
 /// Writes the packfile into the given output directory, along with a v2
 /// index. The packfile is verified.
 pub struct Standard<F> {
     git_dir: PathBuf,
     opt: Options,
     thick: F,
     stop: Arc<AtomicBool>,
 }
 impl<F> Standard<F> {
     pub fn new(git_dir: impl AsRef<Path>, opt: Options, thick: F, stop: Arc<AtomicBool>) -> Self {
         Self {
             git_dir: git_dir.as_ref().to_owned(),
             opt,
             thick,
             stop,
         }
     }
 }
 impl<F> Drop for Standard<F> {
     fn drop(&mut self) {
         self.stop.store(true, Ordering::Release);
     }
 }
 impl<F: BuildThickener> PackWriter for Standard<F> {
     type Output = PackReceived;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         prog: impl Progress,
     ) -> io::Result<Self::Output> {
         use pack::{bundle::write::Options, data::input::Mode, index::Version, Bundle};
         let opts = Options {
             thread_limit: self.opt.max_indexer_threads,
             index_kind: Version::V2,
             iteration_mode: Mode::Verify,
         };
         let thickener = self
             .thick
             .build_thickener()
             .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
         Bundle::write_to_directory(
             BlockOn::new(TryTake::new(pack, self.opt.max_pack_bytes)),
             Some(self.git_dir.join("objects").join("pack")),
             prog,
             &self.stop,
             Some(Box::new(move |oid, buf| thickener.find_object(oid, buf))),
             opts,
         )
         .map_err(|e| io::Error::new(io::ErrorKind::Other, e))
     }
 }
 /// No-op [`PackWriter`] which just drains the input.
 pub struct Discard;
 impl PackWriter for Discard {
     type Output = u64;
     fn write_pack(
         &self,
         pack: impl AsyncBufRead + Unpin,
         _: impl Progress,
     ) -> io::Result<Self::Output> {
         io::copy(&mut BlockOn::new(pack), &mut io::sink())
     }
 }

deleted link-git/src/protocol/take.rs

@@ -1,76 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     io,
     pin::Pin,
     task::{Context, Poll},
 };
 use futures_lite::io::{AsyncBufRead, AsyncRead};
 /// Like [`futures_lite::io::Take`], but returns an error if and when the
 /// `limit` is exceeded.
 ///
 /// Note that, unlike [`futures_lite::io::Take`], if a single poll reads past
 /// the limit, the excess bytes are _not_ discarded. Instead, an error is
 /// returned on the next poll.
 pub struct TryTake<R> {
     limit: u64,
     inner: R,
 }
 impl<R> TryTake<R> {
     pub fn new(inner: R, limit: u64) -> Self {
         Self { limit, inner }
     }
 }
 impl<R> AsyncRead for TryTake<R>
 where
     R: AsyncRead + Unpin,
 {
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context,
         buf: &mut [u8],
     ) -> Poll<Result<usize, io::Error>> {
         if self.limit == 0 {
             return Poll::Ready(Err(io::Error::new(
                 io::ErrorKind::Other,
                 "max input size exceeded",
             )));
         }
         let this = self.get_mut();
         Pin::new(&mut this.inner).poll_read(cx, buf).map(|ready| {
             if let Ok(siz) = ready {
                 this.limit = this.limit.saturating_sub(siz as u64);
             }
             ready
         })
     }
 }
 impl<R> AsyncBufRead for TryTake<R>
 where
     R: AsyncBufRead + Unpin,
 {
     fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Result<&[u8], io::Error>> {
         if self.limit == 0 {
             return Poll::Ready(Err(io::Error::new(
                 io::ErrorKind::Other,
                 "max input size exceeded",
             )));
         }
         Pin::new(&mut self.get_mut().inner).poll_fill_buf(cx)
     }
     fn consume(self: Pin<&mut Self>, amt: usize) {
         Pin::new(&mut self.get_mut().inner).consume(amt)
     }
 }

deleted link-git/src/protocol/transport.rs

@@ -1,84 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use bstr::BString;
 use futures_lite::io::{AsyncRead, AsyncWrite};
 use git_protocol::transport::{
     client::{
         self,
         git::{ConnectMode, Connection},
         SetServiceResponse,
         Transport,
         TransportWithoutIO,
     },
     Protocol,
     Service,
 };
 pub struct Stateless<R, W> {
     inner: Connection<R, W>,
 }
 impl<R, W> Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     pub fn new(repo: BString, recv: R, send: W) -> Self {
         let url = format!("rad://{repo}");
         let inner = Connection::new(
             recv,
             send,
             Protocol::V2,
             repo,
             None::<(String, Option<u16>)>,
             ConnectMode::Daemon,
         )
         .custom_url(Some(url));
         Self { inner }
     }
 }
 impl<R, W> TransportWithoutIO for Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     fn request(
         &mut self,
         write_mode: client::WriteMode,
         on_into_read: client::MessageKind,
     ) -> Result<client::RequestWriter<'_>, client::Error> {
         self.inner.request(write_mode, on_into_read)
     }
     fn to_url(&self) -> String {
         self.inner.to_url()
     }
     fn supported_protocol_versions(&self) -> &[Protocol] {
         &[Protocol::V2]
     }
     fn connection_persists_across_multiple_requests(&self) -> bool {
         false
     }
 }
 #[async_trait(?Send)]
 impl<R, W> Transport for Stateless<R, W>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     async fn handshake<'a>(
         &mut self,
         service: Service,
         extra_parameters: &'a [(&'a str, Option<&'a str>)],
     ) -> Result<SetServiceResponse<'_>, client::Error> {
         self.inner.handshake(service, extra_parameters).await
     }
 }

deleted link-git/src/protocol/upload_pack.rs

@@ -1,238 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{future::Future, io, path::Path, process::ExitStatus, str::FromStr};
 use async_process::{Command, Stdio};
 use futures_lite::io::{copy, AsyncBufReadExt as _, AsyncRead, AsyncWrite, BufReader};
 use futures_util::try_join;
 use git_packetline::{self as packetline, PacketLineRef};
 use once_cell::sync::Lazy;
 use versions::Version;
 mod legacy;
 #[derive(Debug, PartialEq, Eq)]
 pub struct Header {
     pub path: String,
     pub host: Option<(String, Option<u16>)>,
     pub extra: Vec<(String, Option<String>)>,
 }
 impl FromStr for Header {
     type Err = &'static str;
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let mut parts = s
             .strip_prefix("git-upload-pack ")
             .ok_or("unsupported service")?
             .split_terminator('\0');
         let path = parts.next().ok_or("missing path").and_then(|path| {
             if path.is_empty() {
                 Err("empty path")
             } else {
                 Ok(path.to_owned())
             }
         })?;
         let host = match parts.next() {
             None | Some("") => None,
             Some(host) => match host.strip_prefix("host=") {
                 None => return Err("invalid host"),
                 Some(host) => match host.split_once(':') {
                     None => Some((host.to_owned(), None)),
                     Some((host, port)) => {
                         let port = port.parse::<u16>().or(Err("invalid port"))?;
                         Some((host.to_owned(), Some(port)))
                     },
                 },
             },
         };
         let extra = parts
             .skip_while(|part| part.is_empty())
             .map(|part| match part.split_once('=') {
                 None => (part.to_owned(), None),
                 Some((k, v)) => (k.to_owned(), Some(v.to_owned())),
             })
             .collect();
         Ok(Self { path, host, extra })
     }
 }
 pub async fn upload_pack<R, W>(
     git_dir: impl AsRef<Path>,
     recv: R,
     mut send: W,
 ) -> io::Result<(Header, impl Future<Output = io::Result<ExitStatus>>)>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let mut recv = BufReader::new(recv);
     let header: Header = match recv.fill_buf().await?.first() {
         // legacy clients don't send a proper pktline header :(
         Some(b'g') => {
             let mut buf = String::with_capacity(256);
             recv.read_line(&mut buf).await?;
             buf.parse().map_err(invalid_data)?
         },
         Some(_) => {
             let mut pktline = packetline::StreamingPeekableIter::new(recv, &[]);
             let pkt = pktline
                 .read_line()
                 .await
                 .ok_or_else(|| invalid_data("missing header"))?
                 .map_err(invalid_data)?
                 .map_err(invalid_data)?;
             let hdr = match pkt {
                 PacketLineRef::Data(data) => std::str::from_utf8(data)
                     .map_err(invalid_data)?
                     .parse()
                     .map_err(invalid_data),
                 _ => Err(invalid_data("not a header packet")),
             }?;
             recv = pktline.into_inner();
             hdr
         },
         None => {
             return Err(io::Error::new(
                 io::ErrorKind::UnexpectedEof,
                 "expected header",
             ))
         },
     };
     let namespace = header
         .path
         // legacy clients redundantly send a full URN
         .strip_prefix("rad:git:")
         .map(ToOwned::to_owned)
         .unwrap_or_else(|| header.path.clone());
     let protocol_version = header
         .extra
         .iter()
         .find_map(|kv| match kv {
             (ref k, Some(v)) if k == "version" => {
                 let version = match v.as_str() {
                     "2" => 2,
                     "1" => 1,
                     _ => 0,
                 };
                 Some(version)
             },
             _ => None,
         })
         .unwrap_or(0);
     // legacy
     let stateless_ls = header.extra.iter().any(|(k, _)| k == "ls");
     let fut = async move {
         if protocol_version < 2 {
             if stateless_ls {
                 return legacy::advertise_refs(git_dir, &namespace, recv, send).await;
             }
         } else {
             advertise_capabilities(&mut send).await?;
         }
         let mut child = {
             let mut cmd = Command::new("git");
             cmd.current_dir(git_dir)
                 .env_clear()
                 .envs(
                     std::env::vars()
                         .filter(|(key, _)| key == "PATH" || key.starts_with("GIT_TRACE")),
                 )
                 .env("GIT_PROTOCOL", format!("version={protocol_version}"))
                 .env("GIT_NAMESPACE", namespace)
                 .args([
                     "-c",
                     "uploadpack.allowanysha1inwant=true",
                     "-c",
                     "uploadpack.allowrefinwant=true",
                     "-c",
                     "lsrefs.unborn=ignore",
                     "upload-pack",
                     "--strict",
                     "--stateless-rpc",
                     ".",
                 ])
                 .stdout(Stdio::piped())
                 .stdin(Stdio::piped())
                 .stderr(Stdio::inherit())
                 .kill_on_drop(true)
                 .reap_on_drop(true)
                 .spawn()?
         };
         let mut stdin = child.stdin.take().unwrap();
         let mut stdout = child.stdout.take().unwrap();
         try_join!(
             copy(&mut recv, &mut stdin),
             copy(&mut stdout, &mut send),
             child.status(),
         )
         .map(|(_, _, status)| status)
     };
     Ok((header, fut))
 }
 async fn advertise_capabilities<W>(mut send: W) -> io::Result<()>
 where
     W: AsyncWrite + Unpin,
 {
     // Thou shallt not upgrade your `git` installation while a link instance is
     // running!
     static GIT_VERSION: Lazy<Version> = Lazy::new(|| git_version().unwrap());
     static AGENT: Lazy<Vec<u8>> = Lazy::new(|| format!("agent=git/{}", *GIT_VERSION).into_bytes());
     static CAPABILITIES: Lazy<[&[u8]; 4]> = Lazy::new(|| {
         [
             b"version 2",
             AGENT.as_slice(),
             b"object-format=sha1",
             b"fetch=ref-in-want",
         ]
     });
     for cap in *CAPABILITIES {
         packetline::encode::text_to_write(cap, &mut send).await?;
     }
     packetline::encode::flush_to_write(&mut send).await?;
     Ok(())
 }
 fn git_version() -> io::Result<Version> {
     let out = std::process::Command::new("git")
         .arg("--version")
         .output()?;
     if !out.status.success() {
         return Err(io::Error::new(
             io::ErrorKind::Other,
             "failed to read `git` version",
         ));
     }
     // parse: git version 2.30.1 <other optional tokens>
     out.stdout
         .split(|x| x == &b' ')
         .nth(2)
         .and_then(|s| {
             let s = std::str::from_utf8(s).ok()?;
             Version::new(s.trim())
         })
         .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "failed to parse `git` version"))
 }
 fn invalid_data<E>(inner: E) -> io::Error
 where
     E: Into<Box<dyn std::error::Error + Sync + Send>>,
 {
     io::Error::new(io::ErrorKind::InvalidData, inner)
 }

deleted link-git/src/protocol/upload_pack/legacy.rs

@@ -1,102 +0,0 @@

 // Copyright © 2019-2020 The Radicle Foundation <hello@radicle.foundation>
 // Copyright © 2021      The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{io, path::Path, process::ExitStatus};
 use async_process::{Command, Stdio};
 use futures_lite::io::{copy, AsyncRead, AsyncReadExt as _, AsyncWrite, AsyncWriteExt as _};
 use futures_util::try_join;
 use git_ref::{
     file::{Store as Refdb, WriteReflog},
     FullName,
     Reference,
 };
 pub(super) async fn advertise_refs<R, W>(
     git_dir: impl AsRef<Path>,
     namespace: &str,
     mut recv: R,
     mut send: W,
 ) -> io::Result<ExitStatus>
 where
     R: AsyncRead + Unpin,
     W: AsyncWrite + Unpin,
 {
     let unhide = blocking::unblock({
         let git_dir = git_dir.as_ref().to_path_buf();
         let prefix = Path::new("refs")
             .join("namespaces")
             .join(namespace)
             .join("refs");
         move || -> io::Result<Vec<FullName>> {
             let refdb = Refdb::at(git_dir, WriteReflog::Disable);
             let packed = refdb
                 .packed_buffer()
                 .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
             let refs = refdb
                 .iter_prefixed(packed.as_ref(), prefix)?
                 .filter_map(|r| r.ok().map(|Reference { name, .. }| name))
                 .filter(|name| {
                     const PATTERN: &[u8] = b"rad/ids/any";
                     const SEPARAT: u8 = b'/';
                     name.as_bstr()
                         .rsplit(|b| b == &SEPARAT)
                         .zip(PATTERN.rsplit(|b| b == &SEPARAT))
                         .skip(1)
                         .all(|(a, b)| a == b)
                 })
                 .collect::<Vec<_>>();
             Ok(refs)
         }
     })
     .await?;
     let mut child = {
         let mut cmd = Command::new("git");
         cmd.current_dir(git_dir)
             .env_clear()
             .envs(std::env::vars().filter(|(key, _)| key == "PATH" || key.starts_with("GIT_TRACE")))
             .arg("-c")
             .arg("uploadpack.hiderefs=refs/")
             .arg("-c")
             .arg(format!("uploadpack.hiderefs=!refs/namespaces/{namespace}",));
         for r in unhide {
             cmd.arg("-c")
                 .arg(format!("uploadpack.hiderefs=!{}", r.as_bstr()));
         }
         cmd.args([
             "upload-pack",
             "--strict",
             "--timeout=5",
             "--stateless-rpc",
             "--advertise-refs",
             ".",
         ])
         .stdout(Stdio::piped())
         .stderr(Stdio::inherit())
         .kill_on_drop(true)
         .reap_on_drop(true)
         .spawn()?
     };
     let mut stdout = child.stdout.take().unwrap();
     const HEADER: &[u8] = b"001e# service=git-upload-pack\n0000";
     send.write_all(HEADER).await?;
     let status = try_join!(copy(&mut stdout, &mut send), child.status()).map(|x| x.1);
     // Read one byte off the read stream to ensure it is driven to completion
     // (we expect EOF immediately). Failure to do so may cause resource leaks.
     //
     // Cf. 900b6cf6 (replication: Ensure git stream is closed, 2021-04-26)
     let mut buf = [0; 1];
     recv.read(&mut buf).await?;
     status
 }

deleted link-git/src/refs.rs

@@ -1,7 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 pub mod db;
 pub use git_ref::*;

deleted link-git/src/refs/db.rs

@@ -1,269 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     collections::BTreeSet,
     convert::TryInto,
     io,
     path::{Path, PathBuf},
     sync::Arc,
     time::{Duration, SystemTime},
 };
 use git_ref::{
     file::{self, iter::LooseThenPacked, Transaction, WriteReflog},
     packed,
     FullName,
     PartialNameRef,
     Reference,
     Target,
 };
 use parking_lot::RwLock;
 pub mod error {
     use super::*;
     use thiserror::Error;
     #[derive(Debug, Error)]
     pub enum Open {
         #[error("failed to take a snapshot of packed-refs")]
         Snapshot(#[from] Snapshot),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Snapshot {
         #[error("failed to lock packed-refs")]
         Lock(#[from] git_lock::acquire::Error),
         #[error("failed to open packed-refs")]
         Open(#[from] packed::buffer::open::Error),
         #[error(transparent)]
         Io(#[from] io::Error),
     }
     #[derive(Debug, Error)]
     pub enum Follow {
         #[error("cyclic symref: {0:?}")]
         Cycle(FullName),
         #[error("reference {0:?} not found")]
         NotFound(FullName),
         #[error("max symref depth {0} exceeded")]
         DepthLimitExceeded(usize),
         #[error(transparent)]
         Find(#[from] file::find::Error),
     }
 }
 /// Threadsafe refdb with shareable `packed-refs` memory buffer.
 ///
 /// Packed refs are a delicate business: they are written by an external
 /// process, [`git-pack-refs`], _or_ when a packed ref is deleted. It may also
 /// be that no `packed-refs` currently exist.
 ///
 /// The only way we can be certain to operate on a consistent view of what is
 /// committed to disk is to check if the `packed-refs` file has changed since we
 /// last read it. This would be quite expensive to do for small operations.
 /// Thus, the caller is responsible for determining just how much they can
 /// afford to see possibly out-of-date data: the [`Refdb::snapshot`] method
 /// checks if the previously loaded `packed-refs` appear to be out-of-date, and
 /// reloads them if necessary. The resulting [`Snapshot`] contains a pointer to
 /// an immutable memory buffer of the packed refs which can be shared between
 /// threads, or cloned.
 ///
 /// [`git-pack-refs`]: https://git-scm.com/docs/git-pack-refs
 #[derive(Clone)]
 pub struct Refdb {
     store: file::Store,
     packed: Arc<RwLock<Option<Packed>>>,
 }
 impl Refdb {
     pub fn open(git_dir: impl Into<PathBuf>) -> Result<Self, error::Open> {
         let store = file::Store::at(git_dir, WriteReflog::Normal);
         let packed = Arc::new(RwLock::new(Packed::open(store.packed_refs_path())?));
         Ok(Self { store, packed })
     }
     pub fn snapshot(&self) -> Result<Snapshot, error::Snapshot> {
         let read = self.packed.read();
         match &*read {
             None => {
                 drop(read);
                 // always modified, because it was None and now is Some
                 self.reload(|_| true)
             },
             Some(packed) => {
                 if packed.is_modified()? {
                     let mtime = packed.mtime;
                     drop(read);
                     // we don't care what the mtime is, only that we have a
                     // different value than before
                     self.reload(|packed1| packed1.mtime != mtime)
                 } else {
                     Ok(Snapshot {
                         store: self.store.clone(),
                         packed: Some(packed.buf.clone()),
                     })
                 }
             },
         }
     }
     fn reload<F>(&self, modified_while_blocked: F) -> Result<Snapshot, error::Snapshot>
     where
         F: FnOnce(&Packed) -> bool,
     {
         let mut write = self.packed.write();
         if let Some(packed) = &*write {
             if modified_while_blocked(packed) {
                 return Ok(Snapshot {
                     store: self.store.clone(),
                     packed: Some(packed.buf.clone()),
                 });
             }
         }
         match Packed::open(self.store.packed_refs_path())? {
             Some(packed) => {
                 let buf = packed.buf.clone();
                 *write = Some(packed);
                 Ok(Snapshot {
                     store: self.store.clone(),
                     packed: Some(buf),
                 })
             },
             None => {
                 *write = None;
                 Ok(Snapshot {
                     store: self.store.clone(),
                     packed: None,
                 })
             },
         }
     }
 }
 #[derive(Clone)]
 pub struct Snapshot {
     store: file::Store,
     packed: Option<Arc<packed::Buffer>>,
 }
 impl Snapshot {
     pub fn find<'a, N, E>(&self, name: N) -> Result<Option<Reference>, file::find::Error>
     where
         N: TryInto<PartialNameRef<'a>, Error = E>,
         file::find::Error: From<E>,
     {
         self.store.try_find(name, self.packed.as_deref())
     }
     pub fn transaction(&self) -> Transaction {
         self.store.transaction()
     }
     pub fn iter(&self, prefix: Option<impl AsRef<Path>>) -> io::Result<LooseThenPacked> {
         let packed = self.packed.as_deref();
         match prefix {
             None => self.store.iter(packed),
             Some(p) => self.store.iter_prefixed(packed, p),
         }
     }
     /// Follow a symbolic reference until a direct reference is found.
     ///
     /// If `symref` is a direct reference, a copy of it is returned. No more
     /// than five symbolic references will be followed, and cyclic
     /// references are detected. Both result in an error to be returned.
     ///
     /// Note that following is not the same as "peeling": no access to the
     /// object database is made, and thus no assumptions about the kind of
     /// object the reference ultimately points to can be made.
     pub fn follow(&self, symref: &Reference) -> Result<Reference, error::Follow> {
         match &symref.target {
             Target::Peeled(_) => Ok(symref.clone()),
             Target::Symbolic(name) => {
                 let mut seen = BTreeSet::new();
                 seen.insert(symref.name.clone());
                 let mut next = self
                     .find(name.to_partial())?
                     .ok_or_else(|| error::Follow::NotFound(name.clone()))?;
                 seen.insert(name.clone());
                 const MAX_DEPTH: usize = 5;
                 loop {
                     match next.target {
                         Target::Peeled(_) => return Ok(next),
                         Target::Symbolic(sym) => {
                             if seen.len() + 1 > MAX_DEPTH {
                                 return Err(error::Follow::DepthLimitExceeded(MAX_DEPTH));
                             }
                             if seen.contains(&sym) {
                                 return Err(error::Follow::Cycle(sym));
                             }
                             next = self
                                 .find(sym.to_partial())?
                                 .ok_or_else(|| error::Follow::NotFound(sym.clone()))?;
                             seen.insert(sym);
                         },
                     }
                 }
             },
         }
     }
 }
 struct Packed {
     buf: Arc<packed::Buffer>,
     path: PathBuf,
     mtime: SystemTime,
 }
 impl Packed {
     fn open(path: PathBuf) -> Result<Option<Self>, error::Snapshot> {
         use git_lock::{acquire, Marker};
         let _lock = Marker::acquire_to_hold_resource(
             &path,
             acquire::Fail::AfterDurationWithBackoff(Duration::from_millis(500)),
             None,
         )?;
         match path.metadata() {
             // `git-lock` will happily lock a non-existent file
             Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(None),
             Err(e) => Err(e.into()),
             Ok(meta) => {
                 let mtime = meta.modified()?;
                 let buf = Arc::new(packed::Buffer::open(&path, 32 * 1024)?);
                 Ok(Some(Self { buf, path, mtime }))
             },
         }
     }
     fn is_modified(&self) -> io::Result<bool> {
         match self.path.metadata() {
             // it existed before, so gone is modified
             Err(e) if e.kind() == io::ErrorKind::NotFound => Ok(true),
             Err(e) => Err(e),
             Ok(meta) => {
                 let mtime = meta.modified()?;
                 Ok(self.mtime == mtime)
             },
         }
     }
 }

deleted link-git/src/service.rs

@@ -1,126 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{fmt::Debug, ops::Deref, str::FromStr};
 use git2::transport::Service as GitService;
 use lazy_static::lazy_static;
 lazy_static! {
     static ref SERVICE_REGEX: regex::Regex = regex::Regex::new(r"(\S+) '/?(.+)'").unwrap();
 }
 #[derive(Clone, Copy, PartialEq)]
 pub struct Service(pub GitService);
 /// A service and URN as passed to the exec_request of an SSH server by git when
 /// talking to an SSH remote. The `FromStr` implementation for this type expects
 /// a string of the form:
 ///
 /// `<request type> /<path>`
 ///
 /// Where the request type is either `upload-pack` or `receive-pack`, the
 /// leading slash before the urn is optional, and the `path` is whatever the
 /// `FromStr` of `Path` provides.
 #[derive(Debug, Clone)]
 pub struct SshService<Path> {
     pub service: Service,
     pub path: Path,
 }
 impl<Path> SshService<Path> {
     pub fn is_upload(&self) -> bool {
         match self.service.0 {
             GitService::UploadPackLs | GitService::UploadPack => true,
             GitService::ReceivePackLs | GitService::ReceivePack => false,
         }
     }
     pub fn is_receive(&self) -> bool {
         !self.is_upload()
     }
 }
 impl From<GitService> for Service {
     fn from(g: GitService) -> Self {
         Service(g)
     }
 }
 impl From<Service> for GitService {
     fn from(s: Service) -> Self {
         s.0
     }
 }
 #[derive(thiserror::Error, Debug)]
 pub enum ParseService {
     #[error("the exec str must be in the form <service> <urn>")]
     Format,
     #[error(transparent)]
     Namespace(Box<dyn std::error::Error + Send + Sync + 'static>),
     #[error("unknown service {0}")]
     UnknownService(String),
 }
 impl Debug for Service {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         f.debug_tuple("Service")
             .field(match self.0 {
                 GitService::UploadPackLs => &"UploadPackLs",
                 GitService::UploadPack => &"UploadPack",
                 GitService::ReceivePackLs => &"ReceivePackLs",
                 GitService::ReceivePack => &"ReceivePack",
             })
             .finish()
     }
 }
 impl std::fmt::Display for Service {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self.0 {
             GitService::UploadPack => write!(f, "upload-pack"),
             GitService::UploadPackLs => write!(f, "upload-pack-ls"),
             GitService::ReceivePack => write!(f, "receive-pack"),
             GitService::ReceivePackLs => write!(f, "receive-pack-ls"),
         }
     }
 }
 impl Deref for Service {
     type Target = GitService;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 impl<Path> FromStr for SshService<Path>
 where
     Path: FromStr,
     Path::Err: std::error::Error + Send + Sync + 'static,
 {
     type Err = ParseService;
     fn from_str(exec_str: &str) -> Result<Self, Self::Err> {
         let cap = SERVICE_REGEX
             .captures_iter(exec_str)
             .next()
             .ok_or(ParseService::Format)?;
         debug_assert!(cap.len() == 3);
         let service_str: &str = &cap[1];
         let urn_str = &cap[2];
         let path = urn_str
             .parse()
             .map_err(|err| ParseService::Namespace(Box::new(err)))?;
         let service = match service_str {
             "git-upload-pack" => Ok(Service(GitService::UploadPack)),
             "git-receive-pack" => Ok(Service(GitService::ReceivePack)),
             other => Err(ParseService::UnknownService(other.to_string())),
         }?;
         Ok(Self { service, path })
     }
 }

deleted link-git/t/Cargo.toml

@@ -1,31 +0,0 @@

 [package]
 name = "link-git-test"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-or-later"
 publish = false
 [lib]
 doctest = false
 test = true
 doc = false
 [features]
 test = []
 [dev-dependencies]
 anyhow = "1"
 bstr = "0.2"
 futures = "0.3"
 futures_ringbuf = "0.3"
 tempfile = "3.4"
 [dev-dependencies.git2]
 version = "0.16.1"
 default-features = false
 features = ["vendored-libgit2"]
 [dev-dependencies.link-git]
 path = ".."
 features = ["git2"]
 \ No newline at end of file

deleted link-git/t/src/integration.rs

@@ -1,6 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod protocol;

deleted link-git/t/src/integration/protocol.rs

@@ -1,383 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use std::{
     collections::BTreeSet,
     io,
     path::Path,
     sync::{atomic::AtomicBool, Arc},
 };
 use bstr::ByteSlice as _;
 use futures::{AsyncReadExt as _, TryFutureExt as _};
 use link_git::protocol::{fetch, ls, packwriter, upload_pack, ObjectId, PackWriter, Ref};
 use tempfile::{tempdir, TempDir};
 fn upstream() -> TempDir {
     let tmp = tempdir().unwrap();
     let repo = git2::Repository::init_bare(&tmp).unwrap();
     let auth = git2::Signature::now("apollo", "apollo@cree.de").unwrap();
     let tree = {
         let empty = repo.treebuilder(None).unwrap();
         let oid = empty.write().unwrap();
         repo.find_tree(oid).unwrap()
     };
     let base = {
         let oid = repo
             .commit(
                 Some("refs/namespaces/foo/refs/heads/main"),
                 &auth,
                 &auth,
                 "initial",
                 &tree,
                 &[],
             )
             .unwrap();
         repo.find_commit(oid).unwrap()
     };
     let next = repo
         .commit(
             Some("refs/namespaces/foo/refs/heads/next"),
             &auth,
             &auth,
             "ng",
             &tree,
             &[&base],
         )
         .unwrap();
     repo.reference(
         "refs/namespaces/foo/refs/pulls/1/head",
         next,
         true,
         "pee arrr",
     )
     .unwrap();
     tmp
 }
 fn collect_refs(repo: &git2::Repository) -> Result<Vec<(String, git2::Oid)>, git2::Error> {
     repo.references()?
         .map(|x| x.map(|r| (r.name().unwrap().to_owned(), r.target().unwrap())))
         .collect()
 }
 fn update_tips<'a, T>(repo: &git2::Repository, tips: T) -> Result<(), anyhow::Error>
 where
     T: IntoIterator<Item = &'a Ref>,
 {
     for r in tips {
         match r {
             Ref::Direct { path, object } => {
                 repo.reference(
                     path.to_str()?,
                     git2::Oid::from_bytes(object.as_slice())?,
                     true,
                     "",
                 )?;
             },
             x => anyhow::bail!("unexpected ref variant: {:?}", x),
         }
     }
     Ok(())
 }
 fn collect_history(repo: &git2::Repository, tip: &str) -> Result<Vec<git2::Oid>, git2::Error> {
     let mut revwalk = repo.revwalk()?;
     revwalk.push_ref(tip)?;
     revwalk.collect()
 }
 fn run_ls_refs<R: AsRef<Path>>(remote: R, opt: ls::Options) -> io::Result<Vec<Ref>> {
     let (client, server) = futures_ringbuf::Endpoint::pair(256, 256);
     let client = async move {
         let (recv, send) = client.split();
         ls::ls_refs(opt, recv, send).await
     };
     let server = {
         let (recv, send) = server.split();
         upload_pack::upload_pack(&remote, recv, send).and_then(|(_hdr, run)| run)
     };
     let (client_out, server_out) =
         futures::executor::block_on(futures::future::try_join(client, server))?;
     assert!(server_out.success());
     Ok(client_out)
 }
 fn run_fetch<R, B, P>(
     remote: R,
     opt: fetch::Options,
     build_pack_writer: B,
 ) -> io::Result<fetch::Outputs<P::Output>>
 where
     R: AsRef<Path>,
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     let (client, server) = futures_ringbuf::Endpoint::pair(256, 256);
     let client = async move {
         let (recv, send) = client.split();
         fetch::fetch(opt, build_pack_writer, recv, send).await
     };
     let server = {
         let (recv, send) = server.split();
         upload_pack::upload_pack(&remote, recv, send).and_then(|(_hdr, run)| run)
     };
     let (client_out, server_out) =
         futures::executor::block_on(futures::future::try_join(client, server))?;
     assert!(server_out.success());
     Ok(client_out)
 }
 #[test]
 fn smoke() {
     let remote = upstream();
     let refs = run_ls_refs(
         &remote,
         ls::Options {
             repo: "foo".into(),
             extra_params: vec![],
             ref_prefixes: vec!["refs/heads/".into(), "refs/pulls/".into()],
         },
     )
     .unwrap();
     assert_eq!(
         refs.iter().map(|r| r.unpack().0).collect::<BTreeSet<_>>(),
         [
             "refs/heads/main".into(),
             "refs/heads/next".into(),
             "refs/pulls/1/head".into()
         ]
         .iter()
         .collect::<BTreeSet<_>>()
     );
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: refs.iter().map(|r| r.unpack().0.clone()).collect(),
         },
         |_| packwriter::Discard,
     )
     .unwrap();
     assert!(out.pack.is_some());
 }
 #[test]
 fn want_ref() {
     let remote = upstream();
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: vec!["refs/heads/main".into(), "refs/pulls/1/head".into()],
         },
         |_| packwriter::Discard,
     )
     .unwrap();
     assert!(out.pack.is_some());
     assert_eq!(
         out.wanted_refs
             .iter()
             .map(|r| r.unpack().0)
             .collect::<BTreeSet<_>>(),
         ["refs/heads/main".into(), "refs/pulls/1/head".into(),]
             .iter()
             .collect::<BTreeSet<_>>()
     )
 }
 #[test]
 #[should_panic(expected = "`fetch` is empty")]
 fn empty_fetch() {
     let remote = upstream();
     run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: vec![],
         },
         |_| packwriter::Discard,
     )
     .unwrap();
 }
 fn clone_with<R, L, B, P>(remote: R, local: L, build_pack_writer: B)
 where
     R: AsRef<Path>,
     L: AsRef<Path>,
     B: FnOnce(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     let refs = run_ls_refs(
         &remote,
         ls::Options {
             repo: "foo".into(),
             extra_params: vec![],
             ref_prefixes: vec!["refs/heads/".into(), "refs/pulls/".into()],
         },
     )
     .unwrap();
     let out = run_fetch(
         &remote,
         fetch::Options {
             repo: "foo".into(),
             extra_params: vec![],
             haves: vec![],
             wants: vec![],
             want_refs: refs.iter().map(|r| r.unpack().0.clone()).collect(),
         },
         build_pack_writer,
     )
     .unwrap();
     assert!(out.pack.is_some());
     let remote_repo = git2::Repository::open(remote).unwrap();
     remote_repo.set_namespace("foo").unwrap();
     let local_repo = git2::Repository::open(&local).unwrap();
     update_tips(&local_repo, &out.wanted_refs).unwrap();
     let mut remote_refs = collect_refs(&remote_repo).unwrap();
     let mut local_refs = collect_refs(&local_repo).unwrap();
     remote_refs.sort();
     local_refs.sort();
     assert_eq!(remote_refs, local_refs);
 }
 #[test]
 fn clone_libgit() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     clone_with(&remote, &local, move |stop| {
         packwriter::Libgit::new(packwriter::Options::default(), local_repo, stop)
     })
 }
 #[test]
 fn clone_gitoxide() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     clone_with(&remote, &local, move |stop| {
         packwriter::Standard::new(
             local_repo.path(),
             packwriter::Options::default(),
             packwriter::StandardThickener::new(local_repo.path()),
             stop,
         )
     })
 }
 fn thin_pack_with<R, L, B, P>(remote: R, local: L, build_pack_writer: B)
 where
     R: AsRef<Path>,
     L: AsRef<Path>,
     B: Fn(Arc<AtomicBool>) -> P,
     P: PackWriter + Send + 'static,
     P::Output: Send + 'static,
 {
     // Clone main only
     {
         let out = run_fetch(
             &remote,
             fetch::Options {
                 repo: "foo".into(),
                 extra_params: vec![],
                 haves: vec![],
                 wants: vec![],
                 want_refs: vec!["refs/heads/main".into()],
             },
             &build_pack_writer,
         )
         .unwrap();
         assert!(out.pack.is_some());
     }
     let remote_repo = git2::Repository::open(&remote).unwrap();
     remote_repo.set_namespace("foo").unwrap();
     let local_repo = git2::Repository::open(&local).unwrap();
     // Fetch next, which is ahead of main
     {
         let head = remote_repo.refname_to_id("refs/heads/main").unwrap();
         let out = run_fetch(
             &remote,
             fetch::Options {
                 repo: "foo".into(),
                 extra_params: vec![],
                 haves: vec![ObjectId::from_20_bytes(head.as_bytes())],
                 wants: vec![],
                 want_refs: vec!["refs/heads/next".into()],
             },
             build_pack_writer,
         )
         .unwrap();
         assert!(out.pack.is_some());
         update_tips(&local_repo, &out.wanted_refs).unwrap();
     }
     let remote_history = collect_history(&remote_repo, "refs/heads/next").unwrap();
     let local_history = collect_history(&local_repo, "refs/heads/next").unwrap();
     assert!(!remote_history.is_empty());
     assert_eq!(remote_history, local_history)
 }
 #[test]
 #[ignore]
 fn thin_pack_libgit() {
     let remote = upstream();
     let local = tempdir().unwrap();
     thin_pack_with(&remote, &local, |stop| {
         let local_repo = git2::Repository::init(&local).unwrap();
         packwriter::Libgit::new(packwriter::Options::default(), local_repo, stop)
     })
 }
 #[test]
 fn thin_pack_gitoxide() {
     let remote = upstream();
     let local = tempdir().unwrap();
     let local_repo = git2::Repository::init(&local).unwrap();
     let git_dir = local_repo.path().to_owned();
     thin_pack_with(&remote, &local, move |stop| {
         packwriter::Standard::new(
             &git_dir,
             packwriter::Options::default(),
             packwriter::StandardThickener::new(&git_dir),
             stop,
         )
     })
 }

deleted link-git/t/src/lib.rs

@@ -1,7 +0,0 @@

 // Copyright © 2022 The Radicle Link Contributors
 // SPDX-License-Identifier: GPL-3.0-or-later
 #[cfg(test)]
 mod integration;
 #[cfg(test)]
 mod tests;

deleted link-git/t/src/tests.rs

@@ -1,6 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod protocol;

deleted link-git/t/src/tests/protocol.rs

@@ -1,7 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 mod take;
 mod upload_pack;

deleted link-git/t/src/tests/protocol/take.rs

@@ -1,47 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use futures::{executor::block_on, io::Cursor, AsyncReadExt as _};
 use link_git::protocol::take::TryTake;
 use std::io;
 #[test]
 fn when_within_limit() {
     let input = b"the world is everything that is the case";
     let output = block_on(async move {
         let mut buf = Vec::with_capacity(input.len());
         TryTake::new(Cursor::new(input), input.len() as u64 + 1)
             .read_to_end(&mut buf)
             .await?;
         Ok::<_, io::Error>(buf)
     })
     .unwrap();
     assert_eq!(input, output.as_slice())
 }
 #[test]
 fn when_limit_exceeded() {
     let input = b"what is the case, the fact, is the existence of atomic facts";
     let output =
         block_on(TryTake::new(Cursor::new(input), 10).read_to_end(&mut Vec::new())).unwrap_err();
     assert_eq!(output.to_string(), "max input size exceeded")
 }
 #[test]
 fn excess_bytes_remain() {
     let input = b"whereof one cannot speak, thereof one must be silent";
     let output = block_on(async move {
         let mut buf = Vec::with_capacity(input.len());
         let res = TryTake::new(Cursor::new(input), input.len() as u64)
             .read_to_end(&mut buf)
             .await;
         assert!(res.is_err());
         buf
     });
     assert_eq!(input, output.as_slice())
 }

deleted link-git/t/src/tests/protocol/upload_pack.rs

@@ -1,129 +0,0 @@

 // Copyright © 2021 The Radicle Link Contributors
 //
 // This file is part of radicle-link, distributed under the GPLv3 with Radicle
 // Linking Exception. For full terms see the included LICENSE file.
 use link_git::protocol::upload_pack;
 mod header {
     use super::*;
     use std::str::FromStr as _;
     #[test]
     fn service_must_be_upload_pack() {
         assert_eq!(
             upload_pack::Header::from_str("git-receive-pack "),
             Err("unsupported service")
         )
     }
     #[test]
     fn no_path() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack "),
             Err("missing path")
         )
     }
     #[test]
     fn empty_path() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack \0host=lolhost:123\0"),
             Err("empty path")
         )
     }
     #[test]
     fn host_and_port() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0host=lolhost:123\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), Some(123))),
                 extra: vec![]
             }
         )
     }
     #[test]
     fn host_without_port() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0host=lolhost\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), None)),
                 extra: vec![]
             }
         )
     }
     #[test]
     fn no_host() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![]
             }
         )
     }
     #[test]
     fn empty_host() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![]
             }
         )
     }
     #[test]
     fn no_host_extra() {
         assert_eq!(
             upload_pack::Header::from_str("git-upload-pack /git.git\0\0version=42\0").unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: None,
                 extra: vec![("version".to_owned(), Some("42".to_owned()))]
             }
         )
     }
     #[test]
     fn host_port_extra() {
         assert_eq!(
             upload_pack::Header::from_str(
                 "git-upload-pack /git.git\0host=lolhost:123\0\0version=42\0"
             )
             .unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), Some(123))),
                 extra: vec![("version".to_owned(), Some("42".to_owned()))]
             }
         )
     }
     #[test]
     fn host_extra_extra() {
         assert_eq!(
             upload_pack::Header::from_str(
                 "git-upload-pack /git.git\0host=lolhost\0\0version=42\0foo\0n=69\0"
             )
             .unwrap(),
             upload_pack::Header {
                 path: "/git.git".to_owned(),
                 host: Some(("lolhost".to_owned(), None)),
                 extra: vec![
                     ("version".to_owned(), Some("42".to_owned())),
                     ("foo".to_owned(), None),
                     ("n".to_owned(), Some("69".to_owned()))
                 ]
             }
         )
     }
 }

modified radicle-git-ext/Cargo.toml

@@ -1,9 +1,11 @@

 [package]
 name = "radicle-git-ext"
 version = "0.2.1"
 version = "0.3.0"
 authors = [
   "Alexis Sellier <alexis@radicle.xyz>",
   "Kim Altintop <kim@eagain.st>",
   "Fintan Halpenny <fintan.halpenny@gmail.com",
   "Han Xu <keepsimple@gmail.com>",
 ]
 edition = "2021"
 license = "GPL-3.0-or-later"

modified radicle-surf/Cargo.toml

@@ -38,7 +38,7 @@ default-features = false

 features = ["vendored-libgit2"]
 [dependencies.radicle-git-ext]
 version = "0.2.0"
 version = "0.3.0"
 path = "../radicle-git-ext"
 features = ["serde"]

modified test/Cargo.toml

@@ -11,22 +11,10 @@ doctest = false

 test = true
 doc = false
 [dev-dependencies.git-commit-test]
 path = "../git-commit/t"
 features = ["test"]
 [dev-dependencies.radicle-git-ext-test]
 path = "../radicle-git-ext/t"
 features = ["test"]
 [dev-dependencies.git-trailers-test]
 path = "../git-trailers/t"
 features = ["test"]
 [dev-dependencies.link-git-test]
 path = "../link-git/t"
 features = ["test"]
 [dev-dependencies.radicle-surf-test]
 path = "../radicle-surf/t"
 features = ["test"]