74 lines
2.4 KiB
JavaScript
74 lines
2.4 KiB
JavaScript
var SVGParser = require('./core');
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var Mode = require('../../modes/current');
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var urlSuffix = '', baseUrl, urlAliases = {},
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urlParts = /^((?:\w+:)?(?:\/\/[^\/?#]*)?)(\.\.?$|(?:[^?#\/]*\/)*)(.*)/,
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endSlash = /\/$/;
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function resolvePath(path, base){
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var parts = String(path).match(urlParts);
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if (!parts || parts[1]) return path;
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if (!base || path.charAt(0) !== '.') base = '';
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base = String(base).match(urlParts);
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var directory = parts[2];
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if (directory.charAt(0) != '/'){
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directory = (base[2] || '') + directory;
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var result = [], paths = directory.replace(endSlash, '').split('/');
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for (var i = 0, l = paths.length; i < l; i++){
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var dir = paths[i];
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if (dir === '..' && result.length > 0 && result[result.length - 1] != '..') result.pop();
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else if (dir !== '.') result.push(dir);
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};
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directory = result.join('/') + '/';
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}
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return base[1] + directory + parts[3];
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}
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SVGParser.prototype.findByURL = function(document, url, callback){
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if (!url){
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callback.call(this, null);
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return;
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}
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if (url.charAt(0) == '#'){
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callback.call(this, this.findById(document, url.substr(1)));
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return;
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}
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url = this.resolveURL(url);
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var self = this, i = url.indexOf('#'), id = i > -1 ? url.substr(i + 1) : null;
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if (i > -1) url = url.substr(0, i);
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this.pendingRequests = (this.pendingRequests || 0) + 1;
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var xhr = new XMLHttpRequest();
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xhr.open('GET', url, true);
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xhr.onreadystatechange = function(){
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if (xhr.readyState == 4){
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if (xhr.status == 200){
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var resolve = self.resolveURL,
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doc = /*xhr.responseXML ||*/ self.parseXML(xhr.responseText);
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self.resolveURL = function(newurl){
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return resolvePath(newurl, url);
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}
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callback.call(self, !doc ? null : id ? self.findById(doc, id) : doc.documentElement);
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self.resolveURL = resolve;
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} else {
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callback.call(self, null);
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}
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if (--self.pendingRequests == 0 && self.oncomplete) self.oncomplete();
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}
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};
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xhr.send(null);
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};
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SVGParser.prototype.load = function(url, styles, callback){
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if (typeof styles == 'function'){ callback = styles; styles = null; }
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var parser = this, result = null;
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parser.oncomplete = function(){ callback(result); };
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parser.findByURL(null, url, function(doc){ result = parser.parse(doc.ownerDocument, styles); });
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};
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SVGParser.load = function(url, styles, callback){
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new SVGParser(Mode).load(url, styles, callback);
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};
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