Method Dirname

script.go:310–323

Dirname reads paths from the pipe, one per line, and produces only the parent directories of each path. For example, /usr/local/bin/foo would become just /usr/local/bin. This is the complementary operation to [Pipe.Basename]. If a line is empty, Dirname will transform it to a single dot. Trailing s

()

// slashes are removed, unless Dirname returns the root folder. Otherwise, the
// behaviour of Dirname is the same as [filepath.Dir] (not by coincidence).
func (p *Pipe) Dirname() *Pipe {
	return p.FilterLine(func(line string) string {
		// filepath.Dir() does not handle trailing slashes correctly
		if len(line) > 1 && strings.HasSuffix(line, "/") {
			line = line[:len(line)-1]
		}
		dirname := filepath.Dir(line)
		// filepath.Dir() does not preserve a leading './'
		if strings.HasPrefix(line, "./") {
			return "./" + dirname
		}
		return dirname
	})
}

// Do performs the HTTP request req using the pipe's configured HTTP client, as
// set by [Pipe.WithHTTPClient], or [http.DefaultClient] otherwise. The