func walkFile()

in pkg/header/check.go [146:180]

• 31 lines of code
• 9 McCabe index (conditional complexity)

func walkFile(file string, seen map[string]bool) ([]string, error) {
	var files []string

	if seen[file] {
		return files, nil
	}
	seen[file] = true

	if stat, err := os.Stat(file); err == nil {
		switch mode := stat.Mode(); {
		case mode.IsRegular():
			files = append(files, file)
		case mode.IsDir():
			err := filepath.Walk(file, func(path string, info fs.FileInfo, _ error) error {
				if path == file {
					// when path is symbolic link file, it causes infinite recursive calls
					return nil
				}
				if seen[path] {
					return nil
				}
				seen[path] = true
				if info.Mode().IsRegular() {
					files = append(files, path)
				}
				return nil
			})
			if err != nil {
				return files, err
			}
		}
	}

	return files, nil
}