refactor(sanitizer): turn sanitizer into a service

1 files changed, 0 insertions, 285 deletions

diff --git a/src/sanitizer.js b/src/sanitizer.js
deleted file mode 100644
index 207b1039..00000000
--- a/src/sanitizer.js
+++ /dev/null
@@ -1,285 +0,0 @@
-'use strict';
-
-/*
- * HTML Parser By Misko Hevery (misko@hevery.com)
- * based on:  HTML Parser By John Resig (ejohn.org)
- * Original code by Erik Arvidsson, Mozilla Public License
- * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
- *
- * // Use like so:
- * htmlParser(htmlString, {
- *     start: function(tag, attrs, unary) {},
- *     end: function(tag) {},
- *     chars: function(text) {},
- *     comment: function(text) {}
- * });
- *
- */
-
-// Regular Expressions for parsing tags and attributes
-var START_TAG_REGEXP = /^<\s*([\w:-]+)((?:\s+[\w:-]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)\s*>/,
-  END_TAG_REGEXP = /^<\s*\/\s*([\w:-]+)[^>]*>/,
-  ATTR_REGEXP = /([\w:-]+)(?:\s*=\s*(?:(?:"((?:[^"])*)")|(?:'((?:[^'])*)')|([^>\s]+)))?/g,
-  BEGIN_TAG_REGEXP = /^</,
-  BEGING_END_TAGE_REGEXP = /^<\s*\//,
-  COMMENT_REGEXP = /<!--(.*?)-->/g,
-  CDATA_REGEXP = /<!\[CDATA\[(.*?)]]>/g,
-  URI_REGEXP = /^((ftp|https?):\/\/|mailto:|#)/,
-  NON_ALPHANUMERIC_REGEXP = /([^\#-~| |!])/g; // Match everything outside of normal chars and " (quote character)
-
-
-// Good source of info about elements and attributes
-// http://dev.w3.org/html5/spec/Overview.html#semantics
-// http://simon.html5.org/html-elements
-
-// Safe Void Elements - HTML5
-// http://dev.w3.org/html5/spec/Overview.html#void-elements
-var voidElements = makeMap("area,br,col,hr,img,wbr");
-
-// Elements that you can, intentionally, leave open (and which close themselves)
-// http://dev.w3.org/html5/spec/Overview.html#optional-tags
-var optionalEndTagBlockElements = makeMap("colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr"),
-    optionalEndTagInlineElements = makeMap("rp,rt"),
-    optionalEndTagElements = extend({}, optionalEndTagInlineElements, optionalEndTagBlockElements);
-
-// Safe Block Elements - HTML5
-var blockElements = extend({}, optionalEndTagBlockElements, makeMap("address,article,aside," +
-        "blockquote,caption,center,del,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5,h6," +
-        "header,hgroup,hr,ins,map,menu,nav,ol,pre,script,section,table,ul"));
-
-// Inline Elements - HTML5
-var inlineElements = extend({}, optionalEndTagInlineElements, makeMap("a,abbr,acronym,b,bdi,bdo," +
-        "big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,q,ruby,rp,rt,s,samp,small," +
-        "span,strike,strong,sub,sup,time,tt,u,var"));
-
-
-// Special Elements (can contain anything)
-var specialElements = makeMap("script,style");
-
-var validElements = extend({}, voidElements, blockElements, inlineElements, optionalEndTagElements);
-
-//Attributes that have href and hence need to be sanitized
-var uriAttrs = makeMap("background,cite,href,longdesc,src,usemap");
-var validAttrs = extend({}, uriAttrs, makeMap(
-    'abbr,align,alt,axis,bgcolor,border,cellpadding,cellspacing,class,clear,'+
-    'color,cols,colspan,compact,coords,dir,face,headers,height,hreflang,hspace,'+
-    'ismap,lang,language,nohref,nowrap,rel,rev,rows,rowspan,rules,'+
-    'scope,scrolling,shape,span,start,summary,target,title,type,'+
-    'valign,value,vspace,width'));
-
-/**
- * @example
- * htmlParser(htmlString, {
- *     start: function(tag, attrs, unary) {},
- *     end: function(tag) {},
- *     chars: function(text) {},
- *     comment: function(text) {}
- * });
- *
- * @param {string} html string
- * @param {object} handler
- */
-function htmlParser( html, handler ) {
-  var index, chars, match, stack = [], last = html;
-  stack.last = function() { return stack[ stack.length - 1 ]; };
-
-  while ( html ) {
-    chars = true;
-
-    // Make sure we're not in a script or style element
-    if ( !stack.last() || !specialElements[ stack.last() ] ) {
-
-      // Comment
-      if ( html.indexOf("<!--") === 0 ) {
-        index = html.indexOf("-->");
-
-        if ( index >= 0 ) {
-          if (handler.comment) handler.comment( html.substring( 4, index ) );
-          html = html.substring( index + 3 );
-          chars = false;
-        }
-
-      // end tag
-      } else if ( BEGING_END_TAGE_REGEXP.test(html) ) {
-        match = html.match( END_TAG_REGEXP );
-
-        if ( match ) {
-          html = html.substring( match[0].length );
-          match[0].replace( END_TAG_REGEXP, parseEndTag );
-          chars = false;
-        }
-
-      // start tag
-      } else if ( BEGIN_TAG_REGEXP.test(html) ) {
-        match = html.match( START_TAG_REGEXP );
-
-        if ( match ) {
-          html = html.substring( match[0].length );
-          match[0].replace( START_TAG_REGEXP, parseStartTag );
-          chars = false;
-        }
-      }
-
-      if ( chars ) {
-        index = html.indexOf("<");
-
-        var text = index < 0 ? html : html.substring( 0, index );
-        html = index < 0 ? "" : html.substring( index );
-
-        if (handler.chars) handler.chars( decodeEntities(text) );
-      }
-
-    } else {
-      html = html.replace(new RegExp("(.*)<\\s*\\/\\s*" + stack.last() + "[^>]*>", 'i'), function(all, text){
-        text = text.
-          replace(COMMENT_REGEXP, "$1").
-          replace(CDATA_REGEXP, "$1");
-
-        if (handler.chars) handler.chars( decodeEntities(text) );
-
-        return "";
-      });
-
-      parseEndTag( "", stack.last() );
-    }
-
-    if ( html == last ) {
-      throw "Parse Error: " + html;
-    }
-    last = html;
-  }
-
-  // Clean up any remaining tags
-  parseEndTag();
-
-  function parseStartTag( tag, tagName, rest, unary ) {
-    tagName = lowercase(tagName);
-    if ( blockElements[ tagName ] ) {
-      while ( stack.last() && inlineElements[ stack.last() ] ) {
-        parseEndTag( "", stack.last() );
-      }
-    }
-
-    if ( optionalEndTagElements[ tagName ] && stack.last() == tagName ) {
-      parseEndTag( "", tagName );
-    }
-
-    unary = voidElements[ tagName ] || !!unary;
-
-    if ( !unary )
-      stack.push( tagName );
-
-    var attrs = {};
-
-    rest.replace(ATTR_REGEXP, function(match, name, doubleQuotedValue, singleQoutedValue, unqoutedValue) {
-      var value = doubleQuotedValue
-        || singleQoutedValue
-        || unqoutedValue
-        || '';
-
-      attrs[name] = decodeEntities(value);
-    });
-    if (handler.start) handler.start( tagName, attrs, unary );
-  }
-
-  function parseEndTag( tag, tagName ) {
-    var pos = 0, i;
-    tagName = lowercase(tagName);
-    if ( tagName )
-      // Find the closest opened tag of the same type
-      for ( pos = stack.length - 1; pos >= 0; pos-- )
-        if ( stack[ pos ] == tagName )
-          break;
-
-    if ( pos >= 0 ) {
-      // Close all the open elements, up the stack
-      for ( i = stack.length - 1; i >= pos; i-- )
-        if (handler.end) handler.end( stack[ i ] );
-
-      // Remove the open elements from the stack
-      stack.length = pos;
-    }
-  }
-}
-
-/**
- * decodes all entities into regular string
- * @param value
- * @returns {string} A string with decoded entities.
- */
-var hiddenPre=document.createElement("pre");
-function decodeEntities(value) {
-  hiddenPre.innerHTML=value.replace(/</g,"&lt;");
-  return hiddenPre.innerText || hiddenPre.textContent || '';
-}
-
-/**
- * Escapes all potentially dangerous characters, so that the
- * resulting string can be safely inserted into attribute or
- * element text.
- * @param value
- * @returns escaped text
- */
-function encodeEntities(value) {
-  return value.
-    replace(/&/g, '&amp;').
-    replace(NON_ALPHANUMERIC_REGEXP, function(value){
-      return '&#' + value.charCodeAt(0) + ';';
-    }).
-    replace(/</g, '&lt;').
-    replace(/>/g, '&gt;');
-}
-
-/**
- * create an HTML/XML writer which writes to buffer
- * @param {Array} buf use buf.jain('') to get out sanitized html string
- * @returns {object} in the form of {
- *     start: function(tag, attrs, unary) {},
- *     end: function(tag) {},
- *     chars: function(text) {},
- *     comment: function(text) {}
- * }
- */
-function htmlSanitizeWriter(buf){
-  var ignore = false;
-  var out = bind(buf, buf.push);
-  return {
-    start: function(tag, attrs, unary){
-      tag = lowercase(tag);
-      if (!ignore && specialElements[tag]) {
-        ignore = tag;
-      }
-      if (!ignore && validElements[tag] == true) {
-        out('<');
-        out(tag);
-        forEach(attrs, function(value, key){
-          var lkey=lowercase(key);
-          if (validAttrs[lkey]==true && (uriAttrs[lkey]!==true || value.match(URI_REGEXP))) {
-            out(' ');
-            out(key);
-            out('="');
-            out(encodeEntities(value));
-            out('"');
-          }
-        });
-        out(unary ? '/>' : '>');
-      }
-    },
-    end: function(tag){
-        tag = lowercase(tag);
-        if (!ignore && validElements[tag] == true) {
-          out('</');
-          out(tag);
-          out('>');
-        }
-        if (tag == ignore) {
-          ignore = false;
-        }
-      },
-    chars: function(chars){
-        if (!ignore) {
-          out(encodeEntities(chars));
-        }
-      }
-  };
-}