WebFormDesigner/js/jquery.htmlClean.js

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/*
HTML Clean for jQuery   
Anthony Johnston
http://www.antix.co.uk    
    
version 1.3.1

$Revision$

requires jQuery http://jquery.com   

Use and distibution http://www.opensource.org/licenses/bsd-license.php

2010-04-02 allowedTags/removeTags added (white/black list) thanks to David Wartian (Dwartian)
2010-06-30 replaceStyles added for replacement of bold, italic, super and sub styles on a tag
2012-04-30 allowedAttributes added, an array of attributed allowed on the elements
2013-02-25 now will push non-inline elements up the stack if nested in an inline element
2013-02-25 comment element support added, removed by default, see AllowComments in options
*/
(function ($) {
    $.fn.htmlClean = function (options) {
        // iterate and html clean each matched element
        return this.each(function () {
            var $this = $(this);
            if (this.value) {
                this.value = $.htmlClean(this.value, options);
            } else {
                this.innerHTML = $.htmlClean(this.innerHTML, options);
            }
        });
    };

    // clean the passed html
    $.htmlClean = function (html, options) {
        options = $.extend({}, $.htmlClean.defaults, options);

        var tagsRE = /(<(\/)?(\w+:)?([\w]+)([^>]*)>)|<!--(.*?--)>/gi;
        var attrsRE = /([\w\-]+)=(".*?"|'.*?'|[^\s>]*)/gi;

        var tagMatch;
        var root = new Element();
        var stack = [root];
        var container = root;
        var protect = false;

        if (options.bodyOnly) {
            // check for body tag
            if (tagMatch = /<body[^>]*>((\n|.)*)<\/body>/i.exec(html)) {
                html = tagMatch[1];
            }
        }
        html = html.concat("<xxx>"); // ensure last element/text is found
        var lastIndex;

        while (tagMatch = tagsRE.exec(html)) {
            var tag = tagMatch[6]
                ? new Tag("--", null, tagMatch[6], options)
                : new Tag(tagMatch[4], tagMatch[2], tagMatch[5], options);

            // add the text