func checkNoTabs()

in admin/lint/checks.go [98:126]

• 24 lines of code
• 6 McCabe index (conditional complexity)

func checkNoTabs(workspaceDir string, file string) error {
	input, err := os.OpenFile(file, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed to open %s for read: %v", file, err)
	}
	defer input.Close()

	preg := regexp.MustCompile(`^ *\t`)

	reader := bufio.NewReader(input)
	lineNo := 1
	done := false
	for !done {
		line, err := reader.ReadString('\n')
		if err == io.EOF {
			done = true
			// Fall through to process the last line in case it's not empty (when the
			// file didn't end with a newline).
		} else if err != nil {
			return fmt.Errorf("no tabs check failed for %s: %v", file, err)
		}
		if preg.MatchString(line) {
			return fmt.Errorf("no tabs check failed for %s: indentation tabs found at line %d", file, lineNo)
		}
		lineNo++
	}

	return nil
}