Function EscapeStringLiterals

util/util.go:283–312

EscapeStringLiterals escapes backslashes in string literals within an expression to ensure consistent handling between govaluate (which interprets escape sequences) and CSV parsing (which treats backslashes as literal characters). This function doubles all backslashes within single-quoted and double

(expr string)

// and CSV parsing (which treats backslashes as literal characters).
// This function doubles all backslashes within single-quoted and double-quoted strings.
func EscapeStringLiterals(expr string) string {
	var result strings.Builder
	inString := false
	var quote rune

	for i := 0; i < len(expr); i++ {
		ch := rune(expr[i])

		if inString {
			result.WriteRune(ch)
			if ch == '\\' {
				// Found a backslash inside a string - double it
				result.WriteRune('\\')
			} else if ch == quote {
				// End of string literal
				inString = false
			}
			continue
		}

		// Not inside a string literal
		if ch == '\'' || ch == '"' {
			inString = true
			quote = ch
		}
		result.WriteRune(ch)
	}

	return result.String()
}

func RemoveDuplicateElement(s []string) []string {
	result := make([]string, 0, len(s))