Function CleanAndCopy

pkg/exec/exec.go:193–211

CleanAndCopy removes control characters from output

(dst io.Writer, src io.Reader)

// CleanAndCopy removes control characters from output
func CleanAndCopy(dst io.Writer, src io.Reader) error {
	scanner := bufio.NewScanner(src)
	// This regex matches ANSI escape codes that are used for terminal text formatting such as color changes.
	// \x1b is the ESC character, which starts the escape sequence.
	// [^m]* matches any character that is not 'm', multiple times. 'm' is the final character in the sequence.
	// This effectively matches any escape sequence starting with ESC and ending with 'm'.
	re := regexp.MustCompile(`\x1b[^m]*m`)
	for scanner.Scan() {
		cleanString := re.ReplaceAllString(scanner.Text(), "")
		_, err := io.WriteString(dst, cleanString+"\n")
		if err != nil {
			return err
		}
	}
	if err := scanner.Err(); err != nil {
		return err
	}
	return nil
}