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‎common_utilities/CHANGELOG.md‎

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version 0.0.3
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## version 0.0.3
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- Over 30 string utils functions.
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- Encapsulation improvement.
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- Added how to use.
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## version 0.0.4
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- Fix StringUtils extension.

‎common_utilities/README.md‎

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@@ -4,7 +4,7 @@ A Dart Common Utility Package . That contain useful functions for different clas
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Includes a set of **String** , **Int** , **List** functions and so on. that make your work much faster and easier.
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**version 0.0.3 Includes only String utils**.
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**version 0.0.4 Includes only String utils**.
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## String Utils
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Includes over 30 useful string functions such as :

‎common_utilities/lib/common_utilities.dart‎

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library common_utilities;
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import 'package:common_utilities/src/StringUtils.dart';
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extension StringUtil on String {
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export 'src/extensions.dart';
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CommonStringUtils StringUtils (){
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var instance = CommonStringUtils.stringUtils;
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instance.construct(this);
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return instance;
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}
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}

‎common_utilities/lib/src/extensions.dart‎

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import 'string_utils.dart';
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extension StringUtil on String {
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CommonStringUtils StringUtils (){
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var instance = CommonStringUtils.stringUtils;
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instance.construct(this);
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return instance;
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}
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}

‎common_utilities/lib/src/string_utils.dart‎

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import 'package:intl/intl.dart';
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import 'dart:convert' show utf8, base64;
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class CommonStringUtils {
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static final String _exceptionTag = 'Exception on StringUtils : ';
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static final CommonStringUtils stringUtils = CommonStringUtils._();
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String _mainStr = '';
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CommonStringUtils._();
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void construct(String mainStr){
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this._mainStr = mainStr;
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}
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String subStringBetween(String startStr,String endStr){
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String result;
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try{
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final startIndex = _mainStr.indexOf(startStr);
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final endIndex = _mainStr.indexOf(endStr, startIndex + startStr.length);
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result = _mainStr.substring(startIndex + startStr.length, endIndex);
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}
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catch (exc) {
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print('$_exceptionTag$exc');
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}
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return result;
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}
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List<String> subStringsBetween(String startStr,String endStr){
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List<String> results = List<String>();
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_mainStr.split('$endStr').forEach((element) {
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if(element!=null&&element.isNotEmpty){
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results.add(element.substring(element.indexOf('$startStr')+startStr.length));
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}
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});
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return results;
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}
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String subStringAfter(String targetStr,[bool lastIndex = false]){
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String result;
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try{
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lastIndex ?
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result = _mainStr.substring(_mainStr.lastIndexOf('$targetStr')+targetStr.length)
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:
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result = _mainStr.substring(_mainStr.indexOf('$targetStr')+targetStr.length);
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}
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catch (exc) {
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print('$_exceptionTag$exc');
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}
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return result;
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}
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String subStringBefore(String targetStr,[bool lastIndex = false]){
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String result;
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try{
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lastIndex ?
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result = _mainStr.substring(0,_mainStr.lastIndexOf('$targetStr'))
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:
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result = _mainStr.substring(0,_mainStr.indexOf('$targetStr'));
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}
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catch (exc) {
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print('$_exceptionTag$exc');
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}
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return result;
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}
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String insertAt (int index,String wordStr){
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var selectStr = _mainStr[index];
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return _mainStr.replaceFirst('$selectStr', '$selectStr'+'$wordStr');
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}
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String removeAt (int index){
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var selectStr = _mainStr[index];
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return _mainStr.replaceFirst('$selectStr', '');
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}
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String insertAfter(String targetStr,String word){
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return _mainStr.replaceFirst('$targetStr', '$targetStr'+'$word');
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}
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String insertAfterEvery(String targetStr,String word){
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return _mainStr.replaceAll('$targetStr', '$targetStr'+'$word');
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}
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String removeAfter(String targetStr){
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var tempTarget = _mainStr.substring(_mainStr.indexOf('$targetStr')+targetStr.length);
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return _mainStr.replaceFirst('$tempTarget', '');
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}
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String removeBefore(String targetStr){
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var tempTarget = _mainStr.substring(0,_mainStr.indexOf('$targetStr'));
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return _mainStr.replaceFirst('$tempTarget', '');
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}
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bool isNumericInt(){
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final validCharacters = RegExp(r'^[0-9]+$');
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if(validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isNumericDouble() {
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if (_mainStr == null) {
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return false;
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}
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return double.tryParse(_mainStr) != null;
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}
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bool isAlphabetic(bool withSpace){
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final validCharacters = withSpace ? RegExp(r'^[a-zA-Z ]+$') : RegExp(r'^[a-zA-Z]+$');
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if(validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isUpperCase(){
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final validCharacters = _mainStr.toUpperCase();
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if(_mainStr == validCharacters && RegExp(r'^[a-zA-Z]+').hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isAlphaNumeric(bool withSpace){
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final validCharacters = withSpace ? RegExp(r'^[a-zA-Z0-9 ]+$') : RegExp(r'^[a-zA-Z0-9]+$');
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if(validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isBlank(){
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final validCharacters = RegExp(r'^[ ]+$');
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if(validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isContainSpecialChar(){
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final validCharacters = RegExp(r'^[a-zA-Z0-9 ]+$');
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if(!validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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bool isValidCharacters(RegExp validCharacters){
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try{
202+
if(validCharacters.hasMatch(_mainStr)){
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return true;
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}
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else {
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return false;
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}
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}
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catch (exc){
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print('$_exceptionTag$exc');
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return null;
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}
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}
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String convertEnglishNumberToPersian() {
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const english = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
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const farsi = ['۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹'];
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for (int i = 0; i < english.length; i++) {
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_mainStr = _mainStr.replaceAll(english[i], farsi[i]);
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}
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return _mainStr;
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}
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String convertPersianNumberToEnglish() {
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const english = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
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const farsi = ['۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹'];
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for (int i = 0; i < farsi.length; i++) {
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_mainStr = _mainStr.replaceAll(farsi[i], english[i]);
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}
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return _mainStr;
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}
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String convertToMoneyFormat(){
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final formatter = new NumberFormat("#,###", "en_US");
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if(isNumericDouble()){
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if(isNumericInt()){
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return formatter.format(int.parse(_mainStr));
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}
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return formatter.format(double.parse(_mainStr));
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}
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else{
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return null;
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}
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}
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int countWords(String wordStr){
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int wordCount = 0;
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wordCount = '$wordStr'.allMatches('$_mainStr').length;
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return wordCount;
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}
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int countLines(){
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int lineCount = 0;
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lineCount = '\n'.allMatches('$_mainStr').length;
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return lineCount+1;
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}
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String reverse() {
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return _mainStr.split('').reversed.join();
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}
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String reverseWords() {
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return _mainStr.split(' ').reversed.join(' ');
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}
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String removeBlankLines(){
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return _mainStr.replaceAll(new RegExp(r'(?:[\t ]*(?:\r?\n|\r))+'), '\n');
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}
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String removeLinesThatContain(String wordStr){
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var lines = _mainStr.split('\n');
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for(var lineItem in _mainStr.split('\n')){
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if(lineItem.contains('$wordStr')){
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lines.remove(lineItem);
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}
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}
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return lines.join('\n');
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}
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bool isEmail(){
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var emailValidation = RegExp(r"^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,253}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,253}[a-zA-Z0-9])?)*$");
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if(emailValidation.hasMatch(_mainStr)){
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return true;
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}
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else{
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return false;
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}
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}
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String convertToBase64(){
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return base64.encode(utf8.encode(_mainStr));
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}
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String convertBase64ToString(){
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return utf8.decode(base64.decode(_mainStr));
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}
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List<int> convertToUTF8(){
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return utf8.encode('$_mainStr');
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}
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}

‎common_utilities/pubspec.yaml‎

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name: common_utilities
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description: A Dart Common Utility Package .
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version: 0.0.3
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version: 0.0.4
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homepage: https://github.com/m-r-davari/Flutter-Packages
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environment:

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