feat: Add new filters - String case filters

README.md

@@ -1203,7 +1203,7 @@ Return an array of matched element in a string<br/>
 
 ###underscore
 
-underscoreFilter get string as parameter and return it capitalized
+Converts a string to snake_case (underscore)
 
 ```html
 <p>{{ 'fooBarBaz' | underscore }}</p>
@@ -1216,6 +1216,23 @@ a_n_u_p_p_e_r_c_a_s_e_d_w_o_r_d
 -->
 ```
 
+###camelize
+
+Converts a string to camelCase<br/>
+usage: ```string | camelize: [upperFirst:boolean|optional]```<br/>
+
+```html
+<p>{{ 'a_simple_word' | camelize }}</p>
+<p>{{ 'ANUPPERCASEDWORD' | camelize }}</p>
+<p>{{ 'angular-js' | camelize: true }}</p>
+
+<!--
+result:
+aSimpleWord
+AngularJs
+-->
+```
+
 ## Math
 
 ###max

src/_filter/string/camelize.js

@@ -0,0 +1,24 @@
+/**
+ * @ngdoc filter
+ * @name camelize
+ * @kind function
+ *
+ * @description
+ * Converts a string to camelCase
+ */
+angular.module('a8m.camelize', [])
+  .filter('camelize', function () {
+    return function(input, upperFirst) {
+      if (!isString(input)) return input;
+
+      return input.toLowerCase()
+        .split(/[-_\s]+/g)
+        .filter(function(value) {
+          return value !== '';
+        })
+        .map(function(value, index) {
+          return index === 0 && !!!upperFirst ? value : value.substring(0, 1).toUpperCase() + value.substring(1);
+        })
+        .join('');
+    }
+ });

src/filters.js

@@ -26,6 +26,7 @@ angular.module('angular.filter', [
   'a8m.match',
   'a8m.split',
   'a8m.underscore',
+  'a8m.camelize',
 
   'a8m.to-array',
   'a8m.concat',

test/spec/filter/string/camelize.js

@@ -0,0 +1,30 @@
+'use strict';
+
+describe('camelizeFilter', function () {
+
+  var filter;
+
+  beforeEach(module('a8m.camelize'));
+
+  beforeEach(inject(function ($filter) {
+    filter = $filter('camelize');
+  }));
+
+  it('should camelize valid strings', function() {
+    expect(filter('a_simple_word')).toEqual('aSimpleWord');
+    expect(filter('a_medium_word_here')).toEqual('aMediumWordHere');
+    expect(filter('ANUPPERCASEDWORDHERE')).toEqual('anuppercasedwordhere');
+    expect(filter('alowercasedword')).toEqual('alowercasedword');
+    expect(filter('     s', true)).toEqual('S');
+    expect(filter('  SOME WHITE SPACES  ')).toEqual('someWhiteSpaces');
+    expect(filter('  SOME-WHITE-SPACES  ', true)).toEqual('SomeWhiteSpaces');
+    expect(filter('-1  SOME-WHITE-SPACES0  2-', true)).toEqual('1SomeWhiteSpaces02');
+  });
+
+  it('should not camelize invalid strings', function() {
+    expect(filter(null)).not.toEqual('null');
+    expect(filter(undefined)).not.toEqual('undefined');
+    expect(filter('ANUPPERCASEDWORDHERe')).not.toEqual('aNUPPERCASEDWORDHERE');
+  });
+
+});