git2c, git2d: Rename cmd1 and cmd2 descriptivelyv0.1.31

1 files changed, 63 insertions, 0 deletions

diff --git a/internal/git2c/cmd_index.go b/internal/git2c/cmd_index.go
new file mode 100644
index 0000000..a705a63
--- /dev/null
+++ b/internal/git2c/cmd_index.go
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+
+package git2c
+
+import (
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+)
+
+func (c *Client) CmdIndex(repoPath string) ([]Commit, *FilenameContents, error) {
+	if err := c.writer.WriteData([]byte(repoPath)); err != nil {
+		return nil, nil, fmt.Errorf("sending repo path failed: %w", err)
+	}
+	if err := c.writer.WriteUint(1); err != nil {
+		return nil, nil, fmt.Errorf("sending command failed: %w", err)
+	}
+
+	status, err := c.reader.ReadUint()
+	if err != nil {
+		return nil, nil, fmt.Errorf("reading status failed: %w", err)
+	}
+	if status != 0 {
+		return nil, nil, fmt.Errorf("git2d error: %d", status)
+	}
+
+	// README
+	readmeRaw, err := c.reader.ReadData()
+	if err != nil {
+		readmeRaw = nil
+	}
+
+	readmeFilename := "README.md" // TODO
+	readme := &FilenameContents{Filename: readmeFilename, Content: readmeRaw}
+
+	// Commits
+	var commits []Commit
+	for {
+		id, err := c.reader.ReadData()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			return nil, nil, fmt.Errorf("reading commit ID failed: %w", err)
+		}
+		title, _ := c.reader.ReadData()
+		authorName, _ := c.reader.ReadData()
+		authorEmail, _ := c.reader.ReadData()
+		authorDate, _ := c.reader.ReadData()
+
+		commits = append(commits, Commit{
+			Hash:    hex.EncodeToString(id),
+			Author:  string(authorName),
+			Email:   string(authorEmail),
+			Date:    string(authorDate),
+			Message: string(title),
+		})
+	}
+
+	return commits, readme, nil
+}