Function SplitShellStrings

internal/backend/shell_split.go:45–76

SplitShellStrings returns the list of shell strings from a shell command string.

(data string)

// SplitShellStrings returns the list of shell strings from a shell command string.
func SplitShellStrings(data string) (strs []string, err error) {
	s := &shellSplitter{}

	// derived from strings.SplitFunc
	fieldStart := -1 // Set to -1 when looking for start of field.
	for i, r := range data {
		if s.isSplitChar(r) {
			if fieldStart >= 0 {
				strs = append(strs, data[fieldStart:i])
				fieldStart = -1
			}
		} else if fieldStart == -1 {
			fieldStart = i
		}
	}
	if fieldStart >= 0 { // Last field might end at EOF.
		strs = append(strs, data[fieldStart:])
	}

	switch s.quote {
	case '\'':
		return nil, errors.New("single-quoted string not terminated")
	case '"':
		return nil, errors.New("double-quoted string not terminated")
	}

	if len(strs) == 0 {
		return nil, errors.New("command string is empty")
	}

	return strs, nil
}