refactor(git): share the info/exclude writer with the findings store

2026-08-10 09:59:42 +02:00
parent d3c2e2e7c8
commit 4d997a5f99
6 changed files with 136 additions and 76 deletions
@@ -0,0 +1,74 @@
+using System.Diagnostics;
+using System.Text;
+
+namespace ClaudeDo.Worker.Git;
+
+/// <summary>
+/// Appends paths to a repository's .git/info/exclude. Deliberately not .gitignore: the exclude
+/// file is per-clone and invisible to the repository, so ClaudeDo never modifies a tracked file.
+/// Shared by SessionSkillSeeder (seeded skills) and FindingsStore (untracked findings stores).
+/// </summary>
+public static class GitExcludeWriter
+{
+    /// <summary>Idempotent — an already-present line is left alone.</summary>
+    public static async Task AppendLineAsync(string workingDir, string excludeLine, CancellationToken ct)
+    {
+        var relativeExcludePath = await RunGitCaptureAsync(workingDir, ["rev-parse", "--git-path", "info/exclude"], ct);
+        var excludeFile = Path.IsPathRooted(relativeExcludePath)
+            ? relativeExcludePath
+            : Path.GetFullPath(Path.Combine(workingDir, relativeExcludePath));
+
+        var excludeDir = Path.GetDirectoryName(excludeFile);
+        if (!string.IsNullOrEmpty(excludeDir))
+            Directory.CreateDirectory(excludeDir);
+
+        if (File.Exists(excludeFile))
+        {
+            var existingLines = await File.ReadAllLinesAsync(excludeFile, ct);
+            if (existingLines.Any(l => l.Trim() == excludeLine))
+                return;
+        }
+
+        await File.AppendAllTextAsync(excludeFile, excludeLine + Environment.NewLine, ct);
+    }
+
+    private static async Task<string> RunGitCaptureAsync(string workingDir, IEnumerable<string> args, CancellationToken ct)
+    {
+        var psi = new ProcessStartInfo
+        {
+            FileName = "git",
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            CreateNoWindow = true,
+            StandardOutputEncoding = Encoding.UTF8,
+            StandardErrorEncoding = Encoding.UTF8,
+        };
+        psi.ArgumentList.Add("-C");
+        psi.ArgumentList.Add(workingDir);
+        foreach (var a in args) psi.ArgumentList.Add(a);
+
+        using var proc = new Process { StartInfo = psi };
+        proc.Start();
+
+        await using var ctr = ct.Register(() =>
+        {
+            try { proc.Kill(entireProcessTree: true); }
+            catch { /* already exited */ }
+        });
+
+        var stdoutTask = proc.StandardOutput.ReadToEndAsync();
+        var stderrTask = proc.StandardError.ReadToEndAsync();
+
+        await proc.WaitForExitAsync(CancellationToken.None);
+        var stdout = await stdoutTask;
+        var stderr = await stderrTask;
+
+        ct.ThrowIfCancellationRequested();
+
+        if (proc.ExitCode != 0)
+            throw new InvalidOperationException($"git rev-parse --git-path failed (exit {proc.ExitCode}): {stderr.TrimEnd()}");
+
+        return stdout.TrimEnd('\r', '\n');
+    }
+}