Docs

Author: martijn00

lib/src/utils/validators.dart

@@ -160,6 +160,46 @@ RegExp _bic = RegExp(r'^[A-Z]{4}[A-Z]{2}\w{2}(\w{3})?$');
 RegExp _time = RegExp(
     r'^(?:[01]\d|2[0-3]):[0-5]\d$|^(?:0?[1-9]|1[0-2]):[0-5]\d\s?(?:[AaPp][Mm])$');
 
+/// {@template upper_case_template}
+/// This regex matches any character that is not an uppercase letter (A-Z) or Ñ.
+///
+/// - It includes special characters, digits, and lowercase letters.
+/// - It can be used to find non-uppercase characters.
+///
+/// Examples: a, 1, @
+/// {@endtemplate}
+RegExp _upperCase = RegExp(r'[^A-ZÑ]');
+
+/// {@template lower_case_template}
+/// This regex matches any character that is not a lowercase letter (a-z) or ñ.
+///
+/// - It includes special characters, digits, and uppercase letters.
+/// - It can be used to find non-lowercase characters.
+///
+/// Examples: A, 1, @
+/// {@endtemplate}
+RegExp _lowerCase = RegExp(r'[^a-zñ]');
+
+/// {@template number_template}
+/// This regex matches any character that is not a digit (0-9).
+///
+/// - It includes special characters, letters, and other non-numeric characters.
+/// - It can be used to find non-digit characters.
+///
+/// Examples: a, A, @
+/// {@endtemplate}
+RegExp _number = RegExp(r'[^0-9]');
+
+/// {@template special_char_template}
+/// This regex matches any character that is not a letter (A-Z, a-z) or a digit (0-9).
+///
+/// - It includes special characters and symbols.
+/// - It can be used to find non-alphanumeric characters.
+///
+/// Examples: @, #, %
+/// {@endtemplate}
+RegExp _specialChar = RegExp(r'[A-Za-z0-9]');
+
 int _maxUrlLength = 2083;
 
 /// check if the string [str] is an email
@@ -471,19 +511,19 @@ bool isColorCode(String value,
 }
 
 int uppercaseCharLength(String value) {
-  return value.replaceAll(RegExp(r'[^A-ZÑ]'), '').length;
+  return value.replaceAll(_upperCase, '').length;
 }
 
 int lowercaseCharLength(String value) {
-  return value.replaceAll(RegExp(r'[^a-zñ]'), '').length;
+  return value.replaceAll(_lowerCase, '').length;
 }
 
 int numberCharLength(String value) {
-  return value.replaceAll(RegExp(r'[^0-9]'), '').length;
+  return value.replaceAll(_number, '').length;
 }
 
 int specialCharLength(String value) {
-  return value.replaceAll(RegExp(r'[A-Za-z0-9]'), '').length;
+  return value.replaceAll(_specialChar, '').length;
 }
 
 bool isAlphabetical(String value) {