Method ReadFile

modules/doug/main.go:111–157

* Reads a file from the project directory. HOW TO USE THIS TOOL: - Always use relative paths from the workspace root - Reads the first 2000 lines by default - Each line is prefixed with a line number followed by an arrow (→). Everything that follows the arrow is the literal content of the

(
	ctx context.Context,
	// Relative path within the workspace
	filePath string,
	// Line offset to start reading from
	offset *int,
	// Limit the number of lines read
	limit *int,
)

  - If multiple files are interesting, you can read them all at once using multiple tool calls.
*/
func (d *Doug) ReadFile(
	ctx context.Context,
	// Relative path within the workspace
	filePath string,
	// Line offset to start reading from
	offset *int,
	// Limit the number of lines read
	limit *int,
) (string, error) {
	filePath = d.normalizePath(filePath)

	if limit == nil {
		defaultLimit := 2000
		limit = &defaultLimit
	}

	opts := dagger.FileContentsOpts{
		LimitLines: *limit,
	}
	if offset != nil {
		opts.OffsetLines = *offset
	}

	contents, err := d.Source.File(filePath).Contents(ctx, opts)
	if err != nil {
		return "", err
	}

	if contents == "" {
		return "WARNING: File contents are empty.", nil
	}

	lines := strings.Split(contents, "\n")
	var numberedLines []string

	startLine := 1
	if offset != nil {
		startLine = *offset + 1
	}

	for i, line := range lines {
		lineNo := startLine + i
		numberedLines = append(numberedLines, fmt.Sprintf("%6d→%s", lineNo, line))
	}

	return strings.Join(numberedLines, "\n"), nil
}

/*
Edits files by replacing text, creating new files, or deleting content. For moving or renaming files, use the BasicShell tool with the 'mv' command instead. For larger file edits, use the Write tool to overwrite files.