Method Edit

pkg/backends/filesystem.go:113–155

Edit 实现 BackendProtocol.Edit

(ctx context.Context, path, oldStr, newStr string, replaceAll bool)

// Edit 实现 BackendProtocol.Edit
func (b *FilesystemBackend) Edit(ctx context.Context, path, oldStr, newStr string, replaceAll bool) (*EditResult, error) {
	// 读取文件内容
	content, err := b.fs.Read(ctx, path)
	if err != nil {
		return &EditResult{
			Error: fmt.Sprintf("failed to read file: %v", err),
			Path:  path,
		}, nil
	}

	// 执行替换
	var newContent string
	var count int

	if replaceAll {
		count = strings.Count(content, oldStr)
		newContent = strings.ReplaceAll(content, oldStr, newStr)
	} else {
		if strings.Contains(content, oldStr) {
			newContent = strings.Replace(content, oldStr, newStr, 1)
			count = 1
		} else {
			newContent = content
			count = 0
		}
	}

	// 写回文件
	if count > 0 {
		if err := b.fs.Write(ctx, path, newContent); err != nil {
			return &EditResult{
				Error: fmt.Sprintf("failed to write file: %v", err),
				Path:  path,
			}, nil
		}
	}

	return &EditResult{
		Error:            "", // 空字符串表示成功
		Path:             path,
		ReplacementsMade: count,
	}, nil
}

// GrepRaw 实现 BackendProtocol.GrepRaw
func (b *FilesystemBackend) GrepRaw(ctx context.Context, pattern, path, glob string) ([]GrepMatch, error) {