From 2b54f5c51ff9a26d4077037631ed39d62ed2b3fb Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@spawned.biz>
Date: Thu, 12 Jun 2025 09:11:18 +0200
Subject: Initial support for translation reviews

---
 server/common/src/git.rs | 61 +++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 58 insertions(+), 3 deletions(-)

(limited to 'server/common/src/git.rs')

diff --git a/server/common/src/git.rs b/server/common/src/git.rs
index 8fe7863..e396d8a 100644
--- a/server/common/src/git.rs
+++ b/server/common/src/git.rs
@@ -4,6 +4,7 @@ use futures::future::TryFutureExt;
 use pathdiff::diff_paths;
 use std::collections::HashMap;
 use std::fmt;
+use std::io::{self, Cursor, Read};
 use std::path::{Path, PathBuf};
 use std::process::Stdio;
 use tokio::fs;
@@ -78,6 +79,24 @@ pub struct TreeEntry {
     pub path: String,
 }
 
+pub struct GitFile {
+    cursor: Cursor<Vec<u8>>,
+}
+
+impl GitFile {
+    pub fn new(data: Vec<u8>) -> Self {
+        GitFile {
+            cursor: Cursor::new(data),
+        }
+    }
+}
+
+impl Read for GitFile {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        self.cursor.read(buf)
+    }
+}
+
 fn io_err(action: &str, e: std::io::Error) -> Error {
     Error::new(format!("{action}: {e}"))
 }
@@ -161,6 +180,8 @@ impl RepoData {
         cmd.arg("--porcelain");
         // This option disables this automatic tag following.
         cmd.arg("--no-tags");
+        // Write out refs even if they didn't change
+        cmd.arg("--verbose");
         cmd.arg("origin");
         // <+ force update><remote branch>:<local branch>
         cmd.arg(format!("+{branch}:{branch}"));
@@ -430,6 +451,23 @@ impl RepoData {
         self.output(&mut cmd).map_ok(parse_tree_entries).await
     }
 
+    async fn cat_file(
+        &self,
+        repo: &Repository,
+        object_type: ObjectType,
+        object_name: &str,
+    ) -> Result<GitFile, Error> {
+        let mut cmd = self.git_cmd(repo);
+        cmd.arg("cat-file")
+            .arg(match object_type {
+                ObjectType::BLOB => "blob",
+                ObjectType::COMMIT => "commit",
+                ObjectType::TREE => "tree",
+            })
+            .arg(object_name);
+        self.raw_output(&mut cmd).map_ok(GitFile::new).await
+    }
+
     async fn get_log_format(
         &self,
         repo: &Repository,
@@ -516,6 +554,14 @@ impl RepoData {
     }
 
     async fn output(&self, cmd: &mut Command) -> Result<String, Error> {
+        match self.raw_output(cmd).await {
+            Ok(bytes) => String::from_utf8(bytes)
+                .map_err(|e| Error::new(format!("git command had invalid output: {e}"))),
+            Err(e) => Err(e),
+        }
+    }
+
+    async fn raw_output(&self, cmd: &mut Command) -> Result<Vec<u8>, Error> {
         cmd.stdin(Stdio::null())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped());
@@ -530,9 +576,7 @@ impl RepoData {
             .await?;
 
         if output.status.success() {
-            let output_utf8 = String::from_utf8(output.stdout)
-                .map_err(|e| Error::new(format!("git command had invalid output: {e}")))?;
-            Ok(output_utf8)
+            Ok(output.stdout)
         } else {
             Err(Error::new(format!(
                 "git command failed with exitcode: {}\n{:?}\n{}",
@@ -693,4 +737,15 @@ impl Repository {
 
         data.ls_tree(self, commit.as_str(), recursive).await
     }
+
+    pub async fn cat_file(
+        &self,
+        object_type: ObjectType,
+        object_name: impl Into<String>,
+    ) -> Result<GitFile, Error> {
+        let object_name = object_name.into();
+        let data = self.lock.read().await;
+
+        data.cat_file(self, object_type, object_name.as_str()).await
+    }
 }
-- 
cgit v1.2.3-70-g09d2