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<title>[38358] trunk/src/wp-admin/js/word-count.js: Editor: improve `word-count.js` documentation.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/38358">38358</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/38358","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>wonderboymusic</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-08-26 09:24:34 +0000 (Fri, 26 Aug 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Editor: improve `word-count.js` documentation.

Props jipmoors, andizer.
Fixes <a href="https://core.trac.wordpress.org/ticket/37718">#37718</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminjswordcountjs">trunk/src/wp-admin/js/word-count.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminjswordcountjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/js/word-count.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/js/word-count.js       2016-08-26 09:21:33 UTC (rev 38357)
+++ trunk/src/wp-admin/js/word-count.js 2016-08-26 09:24:34 UTC (rev 38358)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,10 +1,57 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/**
+ * Word or character counting functionality. Count words or characters in a provided text string.
+ *
+ * @summary   Count words or characters in a text.
+ *
+ * @namespace wp.utils
+ * @since     2.6
+ */
+
</ins><span class="cx" style="display: block; padding: 0 10px"> ( function() {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        /**
+        * Word counting utility
+        *
+        * @namespace wp.utils.wordcounter
+        * @memberof  wp.utils
+        *
+        * @class
+        *
+        * @param {Object} settings                                   Optional. Key-value object containing overrides for
+        *                                                            settings.
+        * @param {RegExp} settings.HTMLRegExp                        Optional. Regular expression to find HTML elements.
+        * @param {RegExp} settings.HTMLcommentRegExp                 Optional. Regular expression to find HTML comments.
+        * @param {RegExp} settings.spaceRegExp                       Optional. Regular expression to find irregular space
+        *                                                            characters.
+        * @param {RegExp} settings.HTMLEntityRegExp                  Optional. Regular expression to find HTML entities.
+        * @param {RegExp} settings.connectorRegExp                   Optional. Regular expression to find connectors that
+        *                                                            split words.
+        * @param {RegExp} settings.removeRegExp                      Optional. Regular expression to find remove unwanted
+        *                                                            characters to reduce false-positives.
+        * @param {RegExp} settings.astralRegExp                      Optional. Regular expression to find unwanted
+        *                                                            characters when searching for non-words.
+        * @param {RegExp} settings.wordsRegExp                       Optional. Regular expression to find words by spaces.
+        * @param {RegExp} settings.characters_excluding_spacesRegExp Optional. Regular expression to find characters which
+        *                                                            are non-spaces.
+        * @param {RegExp} settings.characters_including_spacesRegExp Optional. Regular expression to find characters
+        *                                                            including spaces.
+        * @param {RegExp} settings.shortcodesRegExp                  Optional. Regular expression to find shortcodes.
+        * @param {Object} settings.l10n                              Optional. Localization object containing specific
+        *                                                            configuration for the current localization.
+        * @param {String} settings.l10n.type                         Optional. Method of finding words to count.
+        * @param {Array}  settings.l10n.shortcodes                   Optional. Array of shortcodes that should be removed
+        *                                                            from the text.
+        *
+        * @return void
+        */
</ins><span class="cx" style="display: block; padding: 0 10px">         function WordCounter( settings ) {
</span><span class="cx" style="display: block; padding: 0 10px">                var key,
</span><span class="cx" style="display: block; padding: 0 10px">                        shortcodes;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Apply provided settings to object settings.
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( settings ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        for ( key in settings ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Only apply valid settings.
</ins><span class="cx" style="display: block; padding: 0 10px">                                 if ( settings.hasOwnProperty( key ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                        this.settings[ key ] = settings[ key ];
</span><span class="cx" style="display: block; padding: 0 10px">                                }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -13,91 +60,151 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                shortcodes = this.settings.l10n.shortcodes;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // If there are any localization shortcodes, add this as type in the settings.
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( shortcodes && shortcodes.length ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        this.settings.shortcodesRegExp = new RegExp( '\\[\\/?(?:' + shortcodes.join( '|' ) + ')[^\\]]*?\\]', 'g' );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        // Default settings.
</ins><span class="cx" style="display: block; padding: 0 10px">         WordCounter.prototype.settings = {
</span><span class="cx" style="display: block; padding: 0 10px">                HTMLRegExp: /<\/?[a-z][^>]*?>/gi,
</span><span class="cx" style="display: block; padding: 0 10px">                HTMLcommentRegExp: /<!--[\s\S]*?-->/g,
</span><span class="cx" style="display: block; padding: 0 10px">                spaceRegExp: /&nbsp;|&#160;/gi,
</span><span class="cx" style="display: block; padding: 0 10px">                HTMLEntityRegExp: /&\S+?;/g,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // \u2014 = em-dash
</ins><span class="cx" style="display: block; padding: 0 10px">                 connectorRegExp: /--|\u2014/g,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // Characters to be removed from input text.
</ins><span class="cx" style="display: block; padding: 0 10px">                 removeRegExp: new RegExp( [
</span><span class="cx" style="display: block; padding: 0 10px">                        '[',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px">                                 // Basic Latin (extract)
</span><span class="cx" style="display: block; padding: 0 10px">                                '\u0021-\u0040\u005B-\u0060\u007B-\u007E',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px">                                 // Latin-1 Supplement (extract)
</span><span class="cx" style="display: block; padding: 0 10px">                                '\u0080-\u00BF\u00D7\u00F7',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                // General Punctuation
-                               // Superscripts and Subscripts
-                               // Currency Symbols
-                               // Combining Diacritical Marks for Symbols
-                               // Letterlike Symbols
-                               // Number Forms
-                               // Arrows
-                               // Mathematical Operators
-                               // Miscellaneous Technical
-                               // Control Pictures
-                               // Optical Character Recognition
-                               // Enclosed Alphanumerics
-                               // Box Drawing
-                               // Block Elements
-                               // Geometric Shapes
-                               // Miscellaneous Symbols
-                               // Dingbats
-                               // Miscellaneous Mathematical Symbols-A
-                               // Supplemental Arrows-A
-                               // Braille Patterns
-                               // Supplemental Arrows-B
-                               // Miscellaneous Mathematical Symbols-B
-                               // Supplemental Mathematical Operators
-                               // Miscellaneous Symbols and Arrows
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               /*
+                                * The following range consists of:
+                                * General Punctuation
+                                * Superscripts and Subscripts
+                                * Currency Symbols
+                                * Combining Diacritical Marks for Symbols
+                                * Letterlike Symbols
+                                * Number Forms
+                                * Arrows
+                                * Mathematical Operators
+                                * Miscellaneous Technical
+                                * Control Pictures
+                                * Optical Character Recognition
+                                * Enclosed Alphanumerics
+                                * Box Drawing
+                                * Block Elements
+                                * Geometric Shapes
+                                * Miscellaneous Symbols
+                                * Dingbats
+                                * Miscellaneous Mathematical Symbols-A
+                                * Supplemental Arrows-A
+                                * Braille Patterns
+                                * Supplemental Arrows-B
+                                * Miscellaneous Mathematical Symbols-B
+                                * Supplemental Mathematical Operators
+                                * Miscellaneous Symbols and Arrows
+                                */
</ins><span class="cx" style="display: block; padding: 0 10px">                                 '\u2000-\u2BFF',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px">                                 // Supplemental Punctuation
</span><span class="cx" style="display: block; padding: 0 10px">                                '\u2E00-\u2E7F',
</span><span class="cx" style="display: block; padding: 0 10px">                        ']'
</span><span class="cx" style="display: block; padding: 0 10px">                ].join( '' ), 'g' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // Remove UTF-16 surrogate points, see https://en.wikipedia.org/wiki/UTF-16#U.2BD800_to_U.2BDFFF
</ins><span class="cx" style="display: block; padding: 0 10px">                 astralRegExp: /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
</span><span class="cx" style="display: block; padding: 0 10px">                wordsRegExp: /\S\s+/g,
</span><span class="cx" style="display: block; padding: 0 10px">                characters_excluding_spacesRegExp: /\S/g,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               /*
+                * Match anything that is not a formatting character, excluding:
+                * \f = form feed
+                * \n = new line
+                * \r = carriage return
+                * \t = tab
+                * \v = vertical tab
+                * \u00AD = soft hyphen
+                * \u2028 = line separator
+                * \u2029 = paragraph separator
+                */
</ins><span class="cx" style="display: block; padding: 0 10px">                 characters_including_spacesRegExp: /[^\f\n\r\t\v\u00AD\u2028\u2029]/g,
</span><span class="cx" style="display: block; padding: 0 10px">                l10n: window.wordCountL10n || {}
</span><span class="cx" style="display: block; padding: 0 10px">        };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        /**
+        * Counts the number of words (or other specified type) in the specified text.
+        *
+        * @summary  Count the number of elements in a text.
+        *
+        * @since    2.6
+        * @memberof wp.utils.wordcounter
+        *
+        * @param {String}  text Text to count elements in.
+        * @param {String}  type Optional. Specify type to use.
+        *
+        * @return {Number} The number of items counted.
+        */
</ins><span class="cx" style="display: block; padding: 0 10px">         WordCounter.prototype.count = function( text, type ) {
</span><span class="cx" style="display: block; padding: 0 10px">                var count = 0;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Use default type if none was provided.
</ins><span class="cx" style="display: block; padding: 0 10px">                 type = type || this.settings.l10n.type;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Sanitize type to one of three possibilities: 'words', 'characters_excluding_spaces' or 'characters_including_spaces'.
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( type !== 'characters_excluding_spaces' && type !== 'characters_including_spaces' ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        type = 'words';
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // If we have any text at all.
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( text ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        text = text + '\n';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // Replace all HTML with a new-line.
</ins><span class="cx" style="display: block; padding: 0 10px">                         text = text.replace( this.settings.HTMLRegExp, '\n' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                       // Remove all HTML comments.
</ins><span class="cx" style="display: block; padding: 0 10px">                         text = text.replace( this.settings.HTMLcommentRegExp, '' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // If a shortcode regular expression has been provided use it to remove shortcodes.
</ins><span class="cx" style="display: block; padding: 0 10px">                         if ( this.settings.shortcodesRegExp ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                text = text.replace( this.settings.shortcodesRegExp, '\n' );
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // Normalize non-breaking space to a normal space.
</ins><span class="cx" style="display: block; padding: 0 10px">                         text = text.replace( this.settings.spaceRegExp, ' ' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( type === 'words' ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Remove HTML Entities.
</ins><span class="cx" style="display: block; padding: 0 10px">                                 text = text.replace( this.settings.HTMLEntityRegExp, '' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Convert connectors to spaces to count attached text as words.
</ins><span class="cx" style="display: block; padding: 0 10px">                                 text = text.replace( this.settings.connectorRegExp, ' ' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Remove unwanted characters.
</ins><span class="cx" style="display: block; padding: 0 10px">                                 text = text.replace( this.settings.removeRegExp, '' );
</span><span class="cx" style="display: block; padding: 0 10px">                        } else {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Convert HTML Entities to "a".
</ins><span class="cx" style="display: block; padding: 0 10px">                                 text = text.replace( this.settings.HTMLEntityRegExp, 'a' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // Remove surrogate points.
</ins><span class="cx" style="display: block; padding: 0 10px">                                 text = text.replace( this.settings.astralRegExp, 'a' );
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // Match with the selected type regular expression to count the items.
</ins><span class="cx" style="display: block; padding: 0 10px">                         text = text.match( this.settings[ type + 'RegExp' ] );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // If we have any matches, set the count to the number of items found.
</ins><span class="cx" style="display: block; padding: 0 10px">                         if ( text ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                count = text.length;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -106,6 +213,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                return count;
</span><span class="cx" style="display: block; padding: 0 10px">        };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        // Add the WordCounter to the WP Utils.
</ins><span class="cx" style="display: block; padding: 0 10px">         window.wp = window.wp || {};
</span><span class="cx" style="display: block; padding: 0 10px">        window.wp.utils = window.wp.utils || {};
</span><span class="cx" style="display: block; padding: 0 10px">        window.wp.utils.WordCounter = WordCounter;
</span></span></pre>
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