Marketplace: gix cache with credentialed fetch, pins and GitTree

Anonymous fetches of private repos map to Auth, error text drops gix
source locations and names the innermost network cause, and
valid_branch is pub(crate) for the add form (pre-flight F1, F2, F13).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
2026-09-27 09:04:00 -07:00
co-authored by Claude Opus 5.5
parent b09f811ac1
commit e7ee62b456
5 changed files with 2089 additions and 36 deletions
+1337 -36
View File
File diff suppressed because it is too large Load Diff
+4
View File
@@ -43,11 +43,15 @@ zeroize = "1"
# container. Already in the tree transitively (reqwest), and the point of
# using it rather than hand-rolling is parity with the frontend's `new URL()`.
url = "2"
# Marketplace repos are fetched on the host into a bare cache (spec §3).
# Blocking client + rustls: no git binary or OpenSSL needed on the host.
gix = { version = "0.88", default-features = false, features = ["blocking-network-client", "blocking-http-transport-reqwest-rust-tls", "credentials", "sha1"] }
[dev-dependencies]
# `test-util` (not part of tokio's `full`) lets the auto-start retry tests run
# their backoff schedule under a paused clock instead of in real seconds.
tokio = { version = "1", features = ["full", "test-util"] }
tempfile = "3"
[build-dependencies]
tauri-build = { version = "2", features = [] }
+648
View File
@@ -0,0 +1,648 @@
//! The marketplace cache: one bare `gix` repository per marketplace.
//!
//! Everything here is blocking — call it from `tokio::task::spawn_blocking`.
//! Credentials are handed to gix through its credential callback for the
//! duration of one fetch and are never written to disk or into the repo
//! config.
use std::path::{Path, PathBuf};
use std::sync::atomic::AtomicBool;
/// The ref the fetched branch tip is stored under.
pub const HEAD_REF: &str = "refs/triple-c/head";
/// Prefix of the refs that keep pinned commits alive.
pub const PIN_PREFIX: &str = "refs/triple-c/pins/";
#[derive(Clone)]
pub struct Credential {
pub username: String,
pub password: String,
}
impl std::fmt::Debug for Credential {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Credential")
.field("username", &self.username)
.field("password", &"<redacted>")
.finish()
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum FetchError {
/// 401 / 403, or gix's "credentials … were not accepted" / "no
/// credentials were returned" (anonymous fetch of a private repo).
Auth {
status: u16,
},
/// 404 / "repository not found".
NotFound,
Network(String),
Other(String),
}
impl std::fmt::Display for FetchError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
FetchError::Auth { status } => write!(f, "access denied (HTTP {})", status),
FetchError::NotFound => write!(f, "repository not found"),
FetchError::Network(m) => write!(f, "network error: {}", m),
FetchError::Other(m) => write!(f, "{}", m),
}
}
}
/// Classify a gix error by its Debug-formatted chain. gix wraps transport
/// errors several layers deep and some layers are not `std::error::Error`,
/// so the text is the one stable thing to match on.
pub fn classify_fetch_error(chain: &str) -> FetchError {
let lower = chain.to_ascii_lowercase();
if lower.contains("http status 401")
|| lower.contains("not accepted by the remote")
// GitHub and GitLab answer an anonymous fetch of a private (or
// missing) repo with a credential challenge; with no credential
// callback result gix reports this (pre-flight F2).
|| lower.contains("no credentials were returned")
{
return FetchError::Auth { status: 401 };
}
if lower.contains("http status 403") {
return FetchError::Auth { status: 403 };
}
if lower.contains("http status 404") || lower.contains("repository not found") {
return FetchError::NotFound;
}
const NETWORK: &[&str] = &[
"dns error",
"resolving dns",
"failed to lookup address",
"connection refused",
"connection reset",
"timed out",
"timeout",
"network is unreachable",
"no route to host",
"error sending request",
"tcp connect error",
];
if NETWORK.iter().any(|needle| lower.contains(needle)) {
// The outermost line is a generic "Transport handshake failed"; the
// innermost `└─` line names the actual cause.
let cause = chain
.lines()
.filter_map(|l| l.trim_start().strip_prefix("└─"))
.last()
.unwrap_or(chain);
return FetchError::Network(first_line(cause));
}
FetchError::Other(first_line(chain))
}
/// First line of `chain`, without gix's `", at <source path>:<line>"` suffix,
/// capped at 300 characters.
fn first_line(chain: &str) -> String {
let line = chain.lines().next().unwrap_or("");
let line = line.split(", at /").next().unwrap_or(line);
line.trim().chars().take(300).collect()
}
fn classify<E: std::fmt::Debug>(e: E) -> FetchError {
classify_fetch_error(&format!("{:?}", e))
}
pub fn cache_path(data_root: &Path, marketplace_id: &str) -> PathBuf {
data_root
.join("marketplaces")
.join(format!("{}.git", marketplace_id))
}
/// Branch names that are safe inside a refspec. Stricter than git's own
/// rules on purpose: nothing that could change the refspec's meaning.
/// `pub(crate)` so the add-marketplace form validates with this same rule
/// (pre-flight F13).
pub(crate) fn valid_branch(branch: &str) -> bool {
!branch.is_empty()
&& branch.len() <= 200
&& !branch.starts_with('-')
&& !branch.starts_with('/')
&& !branch.ends_with('/')
&& !branch.ends_with(".lock")
&& !branch.contains("..")
&& !branch.contains("//")
&& branch
.bytes()
.all(|b| b.is_ascii_alphanumeric() || matches!(b, b'-' | b'_' | b'.' | b'/'))
}
fn open_or_init(repo_path: &Path) -> Result<gix::Repository, FetchError> {
if repo_path.exists() {
gix::open(repo_path)
.map_err(|e| FetchError::Other(format!("Could not open the marketplace cache: {}", e)))
} else {
if let Some(parent) = repo_path.parent() {
std::fs::create_dir_all(parent).map_err(|e| {
FetchError::Other(format!("Could not create {}: {}", parent.display(), e))
})?;
}
gix::init_bare(repo_path).map_err(|e| {
FetchError::Other(format!("Could not create the marketplace cache: {}", e))
})
}
}
/// Init the bare repo if missing, fetch `branch` (or the remote's default
/// branch) into [`HEAD_REF`], and return the head commit hex.
pub fn fetch(
repo_path: &Path,
url: &str,
branch: Option<&str>,
cred: Option<Credential>,
) -> Result<String, FetchError> {
let refspec = match branch {
Some(b) if !valid_branch(b) => {
return Err(FetchError::Other(format!(
"{:?} is not a valid branch name",
b
)));
}
Some(b) => format!("+refs/heads/{}:{}", b, HEAD_REF),
None => format!("+HEAD:{}", HEAD_REF),
};
let repo = open_or_init(repo_path)?;
let remote = repo
.remote_at(url)
.map_err(|e| FetchError::Other(format!("Invalid repository URL: {}", e)))?
.with_refspecs([refspec.as_str()], gix::remote::Direction::Fetch)
.map_err(|e| FetchError::Other(format!("Invalid refspec: {}", e)))?;
let connection = remote
.connect(gix::remote::Direction::Fetch)
.map_err(classify)?
.with_credentials(move |action| match (action, &cred) {
(gix::credentials::helper::Action::Get(ctx), Some(c)) => {
Ok(Some(gix::credentials::protocol::Outcome {
identity: gix::sec::identity::Account {
username: c.username.clone(),
password: c.password.clone(),
oauth_refresh_token: None,
},
next: gix::credentials::helper::NextAction::from(ctx),
}))
}
_ => Ok(None),
});
connection
.prepare_fetch(gix::progress::Discard, Default::default())
.map_err(classify)?
.receive(gix::progress::Discard, &AtomicBool::new(false))
.map_err(classify)?;
cached_head(repo_path)
.map_err(FetchError::Other)?
.ok_or_else(|| FetchError::Other("The remote did not return a branch to fetch".to_string()))
}
/// Current [`HEAD_REF`], if fetched before.
pub fn cached_head(repo_path: &Path) -> Result<Option<String>, String> {
if !repo_path.exists() {
return Ok(None);
}
let repo =
gix::open(repo_path).map_err(|e| format!("Could not open the marketplace cache: {}", e))?;
let reference = repo
.try_find_reference(HEAD_REF)
.map_err(|e| format!("Could not read {}: {}", HEAD_REF, e))?;
match reference {
None => Ok(None),
Some(mut r) => {
let id = r
.peel_to_id()
.map_err(|e| format!("Could not resolve {}: {}", HEAD_REF, e))?;
Ok(Some(id.to_string()))
}
}
}
pub fn has_commit(repo_path: &Path, commit: &str) -> bool {
let Ok(repo) = gix::open(repo_path) else {
return false;
};
let Ok(oid) = gix::ObjectId::from_hex(commit.as_bytes()) else {
return false;
};
// Bound before returning: the `Result<Commit<'_>>` temporary borrows
// `repo` and must drop first (pre-flight F1, E0597 as a tail expression).
let found = repo.find_commit(oid).is_ok();
found
}
/// Make `refs/triple-c/pins/*` exactly the given set (commits missing from
/// the cache are skipped), so pinned commits survive later fetches.
pub fn set_pins(repo_path: &Path, commits: &[String]) -> Result<(), String> {
let repo =
gix::open(repo_path).map_err(|e| format!("Could not open the marketplace cache: {}", e))?;
let wanted: std::collections::BTreeSet<&str> = commits.iter().map(String::as_str).collect();
let mut existing = Vec::new();
let platform = repo
.references()
.map_err(|e| format!("Could not list refs: {}", e))?;
for reference in platform
.prefixed(PIN_PREFIX)
.map_err(|e| format!("Could not list pins: {}", e))?
{
let reference = reference.map_err(|e| format!("Could not read a pin: {:?}", e))?;
existing.push(reference.name().as_bstr().to_string());
}
for name in &existing {
let commit = name.trim_start_matches(PIN_PREFIX);
if !wanted.contains(commit) {
if let Some(r) = repo
.try_find_reference(name.as_str())
.map_err(|e| format!("Could not read {}: {}", name, e))?
{
r.delete()
.map_err(|e| format!("Could not remove {}: {}", name, e))?;
}
}
}
for commit in wanted {
let name = format!("{}{}", PIN_PREFIX, commit);
if existing.contains(&name) {
continue;
}
let Ok(oid) = gix::ObjectId::from_hex(commit.as_bytes()) else {
continue;
};
if repo.find_commit(oid).is_err() {
continue;
}
repo.reference(
name.as_str(),
oid,
gix::refs::transaction::PreviousValue::Any,
"triple-c pin",
)
.map_err(|e| format!("Could not pin {}: {}", commit, e))?;
}
Ok(())
}
#[cfg(test)]
pub(crate) mod test_support {
//! Fixture repos built with the git CLI. Tests that need one call
//! [`git_available`] first and return early without it.
use std::path::Path;
use std::process::Command;
pub fn git_available() -> bool {
Command::new("git")
.arg("--version")
.output()
.map(|o| o.status.success())
.unwrap_or(false)
}
pub fn git(dir: &Path, args: &[&str]) -> String {
let out = Command::new("git")
.args([
"-c",
"user.name=t",
"-c",
"user.email=t@example.invalid",
"-c",
"init.defaultBranch=main",
])
.args(args)
.current_dir(dir)
.output()
.expect("git runs");
assert!(
out.status.success(),
"git {:?}: {}",
args,
String::from_utf8_lossy(&out.stderr)
);
String::from_utf8_lossy(&out.stdout).trim().to_string()
}
/// Write `files` (path, contents, executable) into a new repo and commit.
pub fn init_repo(dir: &Path, files: &[(&str, &str, bool)]) -> String {
git(dir, &["init", "-q"]);
commit_files(dir, files, "initial")
}
pub fn commit_files(dir: &Path, files: &[(&str, &str, bool)], message: &str) -> String {
for (path, contents, exec) in files {
let full = dir.join(path);
std::fs::create_dir_all(full.parent().unwrap()).unwrap();
std::fs::write(&full, contents).unwrap();
#[cfg(unix)]
if *exec {
use std::os::unix::fs::PermissionsExt;
std::fs::set_permissions(&full, std::fs::Permissions::from_mode(0o755)).unwrap();
}
#[cfg(not(unix))]
let _ = exec;
}
git(dir, &["add", "-A"]);
git(dir, &["commit", "-q", "-m", message]);
git(dir, &["rev-parse", "HEAD"])
}
pub fn file_url(dir: &Path) -> String {
format!("file://{}", dir.display())
}
}
#[cfg(test)]
mod tests {
use super::test_support::*;
use super::*;
use crate::marketplace::tree::{GitTree, TreeView};
#[test]
fn fetch_error_mapping() {
let cases = [
("Credentials provided for \"https://x\" were not accepted by the remote\n└─ Received HTTP status 401", FetchError::Auth { status: 401 }),
("handshake\n└─ Received HTTP status 403", FetchError::Auth { status: 403 }),
("└─ Received HTTP status 404", FetchError::NotFound),
("remote: Repository not found.", FetchError::NotFound),
// What gix actually reports for an anonymous fetch of a private
// (or missing) GitHub/GitLab repo (pre-flight F2).
(
"No credentials were returned at all as if the credential helper isn't functioning unknowingly, at /home/u/.cargo/registry/src/index/gix-protocol-0.1/src/handshake/function.rs:70",
FetchError::Auth { status: 401 },
),
];
for (text, want) in cases {
assert_eq!(classify_fetch_error(text), want, "{}", text);
}
assert!(matches!(
classify_fetch_error("error sending request\n└─ dns error: failed to lookup address"),
FetchError::Network(_)
));
assert!(matches!(
classify_fetch_error("operation timed out"),
FetchError::Network(_)
));
assert!(matches!(
classify_fetch_error("something odd"),
FetchError::Other(_)
));
}
#[test]
fn fetch_error_text_drops_source_locations_and_names_the_network_cause() {
// Pre-flight F2: gix appends ", at <cargo registry path>:<line>";
// the innermost `└─` line is the useful network cause.
let chain = "Transport handshake failed, at /home/u/.cargo/registry/src/x/handshake/function.rs:40\n\
├─ An IO error occurred when talking to the server, at /home/u/.cargo/y.rs:12\n\
└─ error resolving DNS, at /home/u/.cargo/z.rs:9";
assert_eq!(
classify_fetch_error(chain),
FetchError::Network("error resolving DNS".to_string())
);
let refused = "Transport handshake failed, at /home/u/.cargo/a.rs:1\n└─ Connection refused (os error 111)";
assert_eq!(
classify_fetch_error(refused),
FetchError::Network("Connection refused (os error 111)".to_string())
);
assert_eq!(
classify_fetch_error("Something odd, at /home/u/.cargo/b.rs:3\n└─ deeper"),
FetchError::Other("Something odd".to_string())
);
}
#[test]
fn credential_debug_never_shows_the_password() {
let c = Credential {
username: "u".into(),
password: "test-token-not-real".into(),
};
let shown = format!("{:?}", c);
assert!(!shown.contains("test-token-not-real"));
assert!(shown.contains("<redacted>"));
}
#[test]
fn refuses_unsafe_branch_names() {
let dir = tempfile::tempdir().unwrap();
for bad in ["-x", "a..b", "a b", "a:b", "x*", "a.lock", ""] {
let err = fetch(
&dir.path().join("c.git"),
"file:///nowhere",
Some(bad),
None,
)
.unwrap_err();
assert!(
matches!(err, FetchError::Other(ref m) if m.contains("branch")),
"{bad:?}: {err:?}"
);
}
}
#[test]
fn valid_branch_accepts_ordinary_names() {
// pub(crate) so the add-marketplace form validates with the same rule
// the fetch applies (pre-flight F13).
for good in ["main", "release/1.2", "feature_x", "v2.0-rc.1"] {
assert!(valid_branch(good), "{good:?}");
}
for bad in [
"/main", "main/", "a//b", "x.lock", "-x", "a..b", "a b", "a\\b",
] {
assert!(!valid_branch(bad), "{bad:?}");
}
}
#[test]
fn fetches_default_branch_then_updates() {
if !git_available() {
return;
}
let src = tempfile::tempdir().unwrap();
let first = init_repo(
src.path(),
&[
("agents/a.md", "one", false),
("hooks/h/run.sh", "#!/bin/sh", true),
],
);
let cache = tempfile::tempdir().unwrap();
let repo = cache_path(cache.path(), "m1");
assert_eq!(cached_head(&repo).unwrap(), None);
let head = fetch(&repo, &file_url(src.path()), None, None).unwrap();
assert_eq!(head, first);
assert_eq!(cached_head(&repo).unwrap(), Some(first.clone()));
assert!(has_commit(&repo, &first));
let tree = GitTree::open(&repo, &first).unwrap();
assert_eq!(tree.read_file("agents/a.md").unwrap().unwrap(), b"one");
let hook = tree.list_dir("hooks/h").unwrap().unwrap();
assert!(hook[0].executable);
assert!(tree.entry_id("agents/a.md").unwrap().is_some());
assert_eq!(tree.list_dir("agents/a.md").unwrap(), None);
let second = commit_files(src.path(), &[("agents/a.md", "two", false)], "second");
assert_eq!(
fetch(&repo, &file_url(src.path()), None, None).unwrap(),
second
);
// The old commit is still readable after the update.
assert_eq!(
GitTree::open(&repo, &first)
.unwrap()
.read_file("agents/a.md")
.unwrap()
.unwrap(),
b"one"
);
}
#[test]
fn fetches_a_named_branch() {
if !git_available() {
return;
}
let src = tempfile::tempdir().unwrap();
init_repo(src.path(), &[("a.md", "main", false)]);
git(src.path(), &["checkout", "-q", "-b", "next"]);
let next = commit_files(src.path(), &[("a.md", "next", false)], "next");
git(src.path(), &["checkout", "-q", "main"]);
let cache = tempfile::tempdir().unwrap();
let repo = cache_path(cache.path(), "m1");
assert_eq!(
fetch(&repo, &file_url(src.path()), Some("next"), None).unwrap(),
next
);
}
#[test]
fn missing_repo_is_an_error_not_a_panic() {
let cache = tempfile::tempdir().unwrap();
let err = fetch(
&cache_path(cache.path(), "m"),
"file:///definitely/not/here",
None,
None,
)
.unwrap_err();
assert!(!matches!(err, FetchError::Auth { .. }), "{err:?}");
}
#[test]
fn refused_connection_is_a_network_error_without_source_paths() {
// Port 1 on loopback: refused immediately, no real network involved.
let cache = tempfile::tempdir().unwrap();
let err = fetch(
&cache_path(cache.path(), "m"),
"https://127.0.0.1:1/x.git",
None,
None,
)
.unwrap_err();
match err {
FetchError::Network(m) => assert!(!m.contains(", at /"), "{m}"),
other => panic!("expected a network error, got {other:?}"),
}
}
#[test]
fn has_commit_is_false_for_unknown_or_malformed_ids() {
if !git_available() {
return;
}
let src = tempfile::tempdir().unwrap();
init_repo(src.path(), &[("x", "1", false)]);
let cache = tempfile::tempdir().unwrap();
let repo = cache_path(cache.path(), "m");
fetch(&repo, &file_url(src.path()), None, None).unwrap();
assert!(!has_commit(&repo, &"f".repeat(40)));
assert!(!has_commit(&repo, "not-hex"));
assert!(!has_commit(
&cache.path().join("absent.git"),
&"f".repeat(40)
));
}
#[test]
fn pins_are_exactly_the_requested_set() {
if !git_available() {
return;
}
let src = tempfile::tempdir().unwrap();
let a = init_repo(src.path(), &[("x", "1", false)]);
let b = commit_files(src.path(), &[("x", "2", false)], "b");
let cache = tempfile::tempdir().unwrap();
let repo = cache_path(cache.path(), "m");
fetch(&repo, &file_url(src.path()), None, None).unwrap();
set_pins(&repo, &[a.clone(), b.clone(), "f".repeat(40)]).unwrap();
let pins = |repo: &Path| -> Vec<String> {
let r = gix::open(repo).unwrap();
let mut names: Vec<String> = r
.references()
.unwrap()
.prefixed(PIN_PREFIX)
.unwrap()
.map(|x| x.unwrap().name().as_bstr().to_string())
.collect();
names.sort();
names
};
let mut want = vec![
format!("{}{}", PIN_PREFIX, a),
format!("{}{}", PIN_PREFIX, b),
];
want.sort();
assert_eq!(pins(&repo), want);
set_pins(&repo, &[b.clone()]).unwrap();
assert_eq!(pins(&repo), vec![format!("{}{}", PIN_PREFIX, b)]);
}
#[test]
fn git_tree_entry_with_a_backslash_marks_the_item_invalid() {
// Task 3 review: a real git tree (not MemTree) whose entry name
// contains `\` must make the catalog reject the item. git itself
// refuses `/` in names, so `\` is the separator that can get through.
if !git_available() {
return;
}
let src = tempfile::tempdir().unwrap();
init_repo(src.path(), &[("skills/ok/SKILL.md", "fine", false)]);
let evil = commit_files(
src.path(),
&[
("skills/s/SKILL.md", "x", false),
("skills/s/..\\evil.sh", "boom", false),
],
"evil",
);
let cache = tempfile::tempdir().unwrap();
let repo = cache_path(cache.path(), "m");
assert_eq!(
fetch(&repo, &file_url(src.path()), None, None).unwrap(),
evil
);
let tree = GitTree::open(&repo, &evil).unwrap();
let names: Vec<String> = tree
.list_dir("skills/s")
.unwrap()
.unwrap()
.into_iter()
.map(|e| e.name)
.collect();
assert!(names.contains(&"..\\evil.sh".to_string()), "{names:?}");
let items = crate::marketplace::catalog::parse_catalog(&tree);
let skill = items.iter().find(|i| i.key == "s").unwrap();
assert!(skill.invalid.is_some(), "{skill:?}");
let ok = items.iter().find(|i| i.key == "ok").unwrap();
assert!(ok.invalid.is_none(), "{ok:?}");
}
}
+1
View File
@@ -1,4 +1,5 @@
//! Marketplace support — see `docs/superpowers/specs/2026-09-27-marketplace-design.md`.
pub mod catalog;
pub mod git;
pub mod tree;
+99
View File
@@ -40,6 +40,105 @@ pub(crate) fn hex(bytes: &[u8]) -> String {
bytes.iter().map(|b| format!("{:02x}", b)).collect()
}
/// A tree at one commit of a bare gix repository.
pub struct GitTree {
repo: gix::Repository,
tree_id: gix::ObjectId,
}
impl GitTree {
pub fn open(repo_path: &std::path::Path, commit: &str) -> Result<Self, String> {
let repo = gix::open(repo_path)
.map_err(|e| format!("Could not open the marketplace cache: {}", e))?;
let oid = gix::ObjectId::from_hex(commit.as_bytes())
.map_err(|e| format!("Invalid commit id {}: {}", commit, e))?;
let tree_id = repo
.find_commit(oid)
.map_err(|e| format!("Commit {} is not in the marketplace cache: {}", commit, e))?
.tree_id()
.map_err(|e| format!("Commit {} has no tree: {}", commit, e))?
.detach();
Ok(Self { repo, tree_id })
}
fn root(&self) -> Result<gix::Tree<'_>, String> {
self.repo
.find_tree(self.tree_id)
.map_err(|e| format!("Could not read tree {}: {}", self.tree_id, e))
}
/// `(object id, mode)` of the entry at `path`, or `None`.
fn lookup(
&self,
path: &str,
) -> Result<Option<(gix::ObjectId, gix::object::tree::EntryMode)>, String> {
if path.is_empty() {
return Ok(Some((
self.tree_id,
gix::object::tree::EntryKind::Tree.into(),
)));
}
let root = self.root()?;
let entry = root
.lookup_entry_by_path(path)
.map_err(|e| format!("Could not look up {}: {}", path, e))?;
Ok(entry.map(|e| (e.object_id(), e.mode())))
}
}
impl TreeView for GitTree {
fn list_dir(&self, path: &str) -> Result<Option<Vec<DirEntry>>, String> {
let Some((id, mode)) = self.lookup(path)? else {
return Ok(None);
};
if !mode.is_tree() {
return Ok(None);
}
let tree = self
.repo
.find_tree(id)
.map_err(|e| format!("Could not read {}: {}", path, e))?;
let mut out = Vec::new();
for entry in tree.iter() {
let entry = entry.map_err(|e| format!("Could not read {}: {:?}", path, e))?;
let mode = entry.mode();
let kind = if mode.is_tree() {
EntryKind::Dir
} else if mode.is_link() {
EntryKind::Symlink
} else if mode.is_blob() {
EntryKind::File
} else {
EntryKind::Other
};
out.push(DirEntry {
name: entry.filename().to_string(),
kind,
executable: mode.is_executable(),
});
}
Ok(Some(out))
}
fn read_file(&self, path: &str) -> Result<Option<Vec<u8>>, String> {
let Some((id, mode)) = self.lookup(path)? else {
return Ok(None);
};
if !mode.is_blob() {
return Ok(None);
}
let blob = self
.repo
.find_blob(id)
.map_err(|e| format!("Could not read {}: {}", path, e))?;
Ok(Some(blob.data.clone()))
}
fn entry_id(&self, path: &str) -> Result<Option<String>, String> {
Ok(self.lookup(path)?.map(|(id, _)| id.to_string()))
}
}
#[cfg(test)]
#[derive(Debug, Clone)]
enum MemNode {