bower_components/angular-sanitize/angular-sanitize.js
/**
* @license AngularJS v1.0.8
* (c) 2010-2012 Google, Inc. http://angularjs.org
* License: MIT
*/
(function(window, angular, undefined) {
'use strict';
/**
* @ngdoc overview
* @name ngSanitize
* @description
*
* The `ngSanitize` module provides functionality to sanitize HTML.
*
* # Installation
* As a separate module, it must be loaded after Angular core is loaded; otherwise, an 'Uncaught Error:
* No module: ngSanitize' runtime error will occur.
*
* <pre>
* <script src="angular.js"></script>
* <script src="angular-sanitize.js"></script>
* </pre>
*
* # Usage
* To make sure the module is available to your application, declare it as a dependency of you application
* module.
*
* <pre>
* angular.module('app', ['ngSanitize']);
* </pre>
*/
/*
* 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) {}
* });
*
*/
/**
* @ngdoc service
* @name ngSanitize.$sanitize
* @function
*
* @description
* The input is sanitized by parsing the html into tokens. All safe tokens (from a whitelist) are
* then serialized back to properly escaped html string. This means that no unsafe input can make
* it into the returned string, however, since our parser is more strict than a typical browser
* parser, it's possible that some obscure input, which would be recognized as valid HTML by a
* browser, won't make it through the sanitizer.
*
* @param {string} html Html input.
* @returns {string} Sanitized html.
*
* @example
<doc:example module="ngSanitize">
<doc:source>
<script>
function Ctrl($scope) {
$scope.snippet =
'<p style="color:blue">an html\n' +
'<em onmouseover="this.textContent=\'PWN3D!\'">click here</em>\n' +
'snippet</p>';
}
</script>
<div ng-controller="Ctrl">
Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea>
<table>
<tr>
<td>Filter</td>
<td>Source</td>
<td>Rendered</td>
</tr>
<tr id="html-filter">
<td>html filter</td>
<td>
<pre><div ng-bind-html="snippet"><br/></div></pre>
</td>
<td>
<div ng-bind-html="snippet"></div>
</td>
</tr>
<tr id="escaped-html">
<td>no filter</td>
<td><pre><div ng-bind="snippet"><br/></div></pre></td>
<td><div ng-bind="snippet"></div></td>
</tr>
<tr id="html-unsafe-filter">
<td>unsafe html filter</td>
<td><pre><div ng-bind-html-unsafe="snippet"><br/></div></pre></td>
<td><div ng-bind-html-unsafe="snippet"></div></td>
</tr>
</table>
</div>
</doc:source>
<doc:scenario>
it('should sanitize the html snippet ', function() {
expect(using('#html-filter').element('div').html()).
toBe('<p>an html\n<em>click here</em>\nsnippet</p>');
});
it('should escape snippet without any filter', function() {
expect(using('#escaped-html').element('div').html()).
toBe("<p style=\"color:blue\">an html\n" +
"<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" +
"snippet</p>");
});
it('should inline raw snippet if filtered as unsafe', function() {
expect(using('#html-unsafe-filter').element("div").html()).
toBe("<p style=\"color:blue\">an html\n" +
"<em onmouseover=\"this.textContent='PWN3D!'\">click here</em>\n" +
"snippet</p>");
});
it('should update', function() {
input('snippet').enter('new <b>text</b>');
expect(using('#html-filter').binding('snippet')).toBe('new <b>text</b>');
expect(using('#escaped-html').element('div').html()).toBe("new <b>text</b>");
expect(using('#html-unsafe-filter').binding("snippet")).toBe('new <b>text</b>');
});
</doc:scenario>
</doc:example>
*/
var $sanitize = function(html) {
var buf = [];
htmlParser(html, htmlSanitizeWriter(buf));
return buf.join('');
};
// 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:|#)/i,
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 = angular.extend({}, optionalEndTagInlineElements, optionalEndTagBlockElements);
// Safe Block Elements - HTML5
var blockElements = angular.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 = angular.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 = angular.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 = angular.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'));
function makeMap(str) {
var obj = {}, items = str.split(','), i;
for (i = 0; i < items.length; i++) obj[items[i]] = true;
return obj;
}
/**
* @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 = angular.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, singleQuotedValue, unquotedValue) {
var value = doubleQuotedValue
|| singleQuotedValue
|| unquotedValue
|| '';
attrs[name] = decodeEntities(value);
});
if (handler.start) handler.start( tagName, attrs, unary );
}
function parseEndTag( tag, tagName ) {
var pos = 0, i;
tagName = angular.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,"<");
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, '&').
replace(NON_ALPHANUMERIC_REGEXP, function(value){
return '&#' + value.charCodeAt(0) + ';';
}).
replace(/</g, '<').
replace(/>/g, '>');
}
/**
* 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 = angular.bind(buf, buf.push);
return {
start: function(tag, attrs, unary){
tag = angular.lowercase(tag);
if (!ignore && specialElements[tag]) {
ignore = tag;
}
if (!ignore && validElements[tag] == true) {
out('<');
out(tag);
angular.forEach(attrs, function(value, key){
var lkey=angular.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 = angular.lowercase(tag);
if (!ignore && validElements[tag] == true) {
out('</');
out(tag);
out('>');
}
if (tag == ignore) {
ignore = false;
}
},
chars: function(chars){
if (!ignore) {
out(encodeEntities(chars));
}
}
};
}
// define ngSanitize module and register $sanitize service
angular.module('ngSanitize', []).value('$sanitize', $sanitize);
/**
* @ngdoc directive
* @name ngSanitize.directive:ngBindHtml
*
* @description
* Creates a binding that will sanitize the result of evaluating the `expression` with the
* {@link ngSanitize.$sanitize $sanitize} service and innerHTML the result into the current element.
*
* See {@link ngSanitize.$sanitize $sanitize} docs for examples.
*
* @element ANY
* @param {expression} ngBindHtml {@link guide/expression Expression} to evaluate.
*/
angular.module('ngSanitize').directive('ngBindHtml', ['$sanitize', function($sanitize) {
return function(scope, element, attr) {
element.addClass('ng-binding').data('$binding', attr.ngBindHtml);
scope.$watch(attr.ngBindHtml, function ngBindHtmlWatchAction(value) {
value = $sanitize(value);
element.html(value || '');
});
};
}]);
/**
* @ngdoc filter
* @name ngSanitize.filter:linky
* @function
*
* @description
* Finds links in text input and turns them into html links. Supports http/https/ftp/mailto and
* plain email address links.
*
* @param {string} text Input text.
* @returns {string} Html-linkified text.
*
* @usage
<span ng-bind-html="linky_expression | linky"></span>
*
* @example
<doc:example module="ngSanitize">
<doc:source>
<script>
function Ctrl($scope) {
$scope.snippet =
'Pretty text with some links:\n'+
'http://angularjs.org/,\n'+
'mailto:us@somewhere.org,\n'+
'another@somewhere.org,\n'+
'and one more: ftp://127.0.0.1/.';
}
</script>
<div ng-controller="Ctrl">
Snippet: <textarea ng-model="snippet" cols="60" rows="3"></textarea>
<table>
<tr>
<td>Filter</td>
<td>Source</td>
<td>Rendered</td>
</tr>
<tr id="linky-filter">
<td>linky filter</td>
<td>
<pre><div ng-bind-html="snippet | linky"><br></div></pre>
</td>
<td>
<div ng-bind-html="snippet | linky"></div>
</td>
</tr>
<tr id="escaped-html">
<td>no filter</td>
<td><pre><div ng-bind="snippet"><br></div></pre></td>
<td><div ng-bind="snippet"></div></td>
</tr>
</table>
</doc:source>
<doc:scenario>
it('should linkify the snippet with urls', function() {
expect(using('#linky-filter').binding('snippet | linky')).
toBe('Pretty text with some links: ' +
'<a href="http://angularjs.org/">http://angularjs.org/</a>, ' +
'<a href="mailto:us@somewhere.org">us@somewhere.org</a>, ' +
'<a href="mailto:another@somewhere.org">another@somewhere.org</a>, ' +
'and one more: <a href="ftp://127.0.0.1/">ftp://127.0.0.1/</a>.');
});
it ('should not linkify snippet without the linky filter', function() {
expect(using('#escaped-html').binding('snippet')).
toBe("Pretty text with some links:\n" +
"http://angularjs.org/,\n" +
"mailto:us@somewhere.org,\n" +
"another@somewhere.org,\n" +
"and one more: ftp://127.0.0.1/.");
});
it('should update', function() {
input('snippet').enter('new http://link.');
expect(using('#linky-filter').binding('snippet | linky')).
toBe('new <a href="http://link">http://link</a>.');
expect(using('#escaped-html').binding('snippet')).toBe('new http://link.');
});
</doc:scenario>
</doc:example>
*/
angular.module('ngSanitize').filter('linky', function() {
var LINKY_URL_REGEXP = /((ftp|https?):\/\/|(mailto:)?[A-Za-z0-9._%+-]+@)\S*[^\s\.\;\,\(\)\{\}\<\>]/,
MAILTO_REGEXP = /^mailto:/;
return function(text) {
if (!text) return text;
var match;
var raw = text;
var html = [];
// TODO(vojta): use $sanitize instead
var writer = htmlSanitizeWriter(html);
var url;
var i;
while ((match = raw.match(LINKY_URL_REGEXP))) {
// We can not end in these as they are sometimes found at the end of the sentence
url = match[0];
// if we did not match ftp/http/mailto then assume mailto
if (match[2] == match[3]) url = 'mailto:' + url;
i = match.index;
writer.chars(raw.substr(0, i));
writer.start('a', {href:url});
writer.chars(match[0].replace(MAILTO_REGEXP, ''));
writer.end('a');
raw = raw.substring(i + match[0].length);
}
writer.chars(raw);
return html.join('');
};
});
})(window, window.angular);