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994 lines
37 KiB
JavaScript
994 lines
37 KiB
JavaScript
/***********************************************
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Copyright 2010 - 2012 Chris Winberry <chris@winberry.net>. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to
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deal in the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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***********************************************/
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/* v2.0.0 */
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(function () {
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var exports;
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if (typeof(module) !== 'undefined' && typeof(module.exports) !== 'undefined') {
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exports = module.exports;
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} else {
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exports = {};
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if (!this.Tautologistics) {
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this.Tautologistics = {};
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}
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if (this.Tautologistics.NodeHtmlParser) {
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return;
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}
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this.Tautologistics.NodeHtmlParser = exports;
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}
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function inherits (ctor, superCtor) {
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var tempCtor = function(){};
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tempCtor.prototype = superCtor.prototype;
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ctor.super_ = superCtor;
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ctor.prototype = new tempCtor();
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ctor.prototype.constructor = ctor;
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}
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var Mode = {
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Text: 'text',
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Tag: 'tag',
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Attr: 'attr',
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CData: 'cdata',
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Doctype: 'doctype',
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Comment: 'comment'
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};
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function Parser (builder, options) {
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this._options = options ? options : { };
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// if (this._options.includeLocation === undefined) {
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// this._options.includeLocation = false; //Include position of element (row, col) on nodes
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// }
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this._validateBuilder(builder);
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var self = this;
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this._builder = builder;
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this.reset();
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}
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if (typeof(module) !== 'undefined' && typeof(module.exports) !== 'undefined') {
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var Stream = require('stream');
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inherits(Parser, Stream);
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Parser.prototype.writable = true;
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Parser.prototype.write = function(data) {
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if(data instanceof Buffer) {
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data = data.toString();
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}
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this.parseChunk(data);
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};
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Parser.prototype.end = function(data) {
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if (arguments.length) {
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this.write(data);
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}
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this.writable = false;
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this.done();
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};
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Parser.prototype.destroy = function() {
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this.writable = false;
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};
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}
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//**Public**//
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Parser.prototype.reset = function Parser$reset () {
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this._state = {
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mode: Mode.Text,
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pos: 0,
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data: null,
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pendingText: null,
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pendingWrite: null,
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lastTag: null,
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isScript: false,
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needData: false,
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output: [],
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done: false//,
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// line: 1,
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// col: 1
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};
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this._builder.reset();
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};
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Parser.prototype.parseChunk = function Parser$parseChunk (chunk) {
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this._state.needData = false;
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this._state.data = (this._state.data !== null) ?
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this._state.data.substr(this.pos) + chunk
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:
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chunk
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;
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while (this._state.pos < this._state.data.length && !this._state.needData) {
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this._parse(this._state);
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}
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};
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Parser.prototype.parseComplete = function Parser$parseComplete (data) {
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this.reset();
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this.parseChunk(data);
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this.done();
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};
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Parser.prototype.done = function Parser$done () {
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this._state.done = true;
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this._parse(this._state);
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this._flushWrite();
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this._builder.done();
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};
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//**Private**//
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Parser.prototype._validateBuilder = function Parser$_validateBuilder (builder) {
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if ((typeof builder) != "object") {
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throw new Error("Builder is not an object");
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}
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if ((typeof builder.reset) != "function") {
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throw new Error("Builder method 'reset' is invalid");
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}
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if ((typeof builder.done) != "function") {
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throw new Error("Builder method 'done' is invalid");
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}
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if ((typeof builder.write) != "function") {
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throw new Error("Builder method 'write' is invalid");
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}
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if ((typeof builder.error) != "function") {
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throw new Error("Builder method 'error' is invalid");
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}
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};
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Parser.prototype._parse = function Parser$_parse () {
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switch (this._state.mode) {
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case Mode.Text:
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return this._parseText(this._state);
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case Mode.Tag:
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return this._parseTag(this._state);
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case Mode.Attr:
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return this._parseAttr(this._state);
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case Mode.CData:
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return this._parseCData(this._state);
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case Mode.Doctype:
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return this._parseDoctype(this._state);
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case Mode.Comment:
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return this._parseComment(this._state);
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}
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};
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Parser.prototype._writePending = function Parser$_writePending (node) {
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if (!this._state.pendingWrite) {
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this._state.pendingWrite = [];
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}
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this._state.pendingWrite.push(node);
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};
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Parser.prototype._flushWrite = function Parser$_flushWrite () {
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if (this._state.pendingWrite) {
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for (var i = 0, len = this._state.pendingWrite.length; i < len; i++) {
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var node = this._state.pendingWrite[i];
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this._builder.write(node);
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}
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this._state.pendingWrite = null;
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}
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};
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Parser.prototype._write = function Parser$_write (node) {
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this._flushWrite();
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this._builder.write(node);
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};
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Parser._re_parseText_scriptClose = /<\s*\/\s*script/ig;
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Parser.prototype._parseText = function Parser$_parseText () {
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var state = this._state;
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var foundPos;
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if (state.isScript) {
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Parser._re_parseText_scriptClose.lastIndex = state.pos;
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foundPos = Parser._re_parseText_scriptClose.exec(state.data);
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foundPos = (foundPos) ?
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foundPos.index
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:
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-1
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;
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} else {
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foundPos = state.data.indexOf('<', state.pos);
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}
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var text = (foundPos === -1) ? state.data.substring(state.pos, state.data.length) : state.data.substring(state.pos, foundPos);
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if (foundPos < 0 && state.done) {
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foundPos = state.data.length;
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}
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if (foundPos < 0) {
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if (state.isScript) {
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state.needData = true;
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return;
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}
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if (!state.pendingText) {
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state.pendingText = [];
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}
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state.pendingText.push(state.data.substring(state.pos, state.data.length));
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state.pos = state.data.length;
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} else {
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if (state.pendingText) {
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state.pendingText.push(state.data.substring(state.pos, foundPos));
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text = state.pendingText.join('');
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state.pendingText = null;
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} else {
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text = state.data.substring(state.pos, foundPos);
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}
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if (text !== '') {
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this._write({ type: Mode.Text, data: text });
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}
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state.pos = foundPos + 1;
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state.mode = Mode.Tag;
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}
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};
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Parser.re_parseTag = /\s*(\/?)\s*([^\s>\/]+)(\s*)\??(>?)/g;
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Parser.prototype._parseTag = function Parser$_parseTag () {
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var state = this._state;
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Parser.re_parseTag.lastIndex = state.pos;
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var match = Parser.re_parseTag.exec(state.data);
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if (match) {
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if (!match[1] && match[2].substr(0, 3) === '!--') {
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state.mode = Mode.Comment;
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state.pos += 3;
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return;
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}
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if (!match[1] && match[2].substr(0, 8) === '![CDATA[') {
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state.mode = Mode.CData;
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state.pos += 8;
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return;
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}
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if (!match[1] && match[2].substr(0, 8) === '!DOCTYPE') {
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state.mode = Mode.Doctype;
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state.pos += 8;
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return;
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}
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if (!state.done && (state.pos + match[0].length) === state.data.length) {
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//We're at the and of the data, might be incomplete
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state.needData = true;
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return;
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}
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var raw;
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if (match[4] === '>') {
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state.mode = Mode.Text;
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raw = match[0].substr(0, match[0].length - 1);
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} else {
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state.mode = Mode.Attr;
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raw = match[0];
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}
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state.pos += match[0].length;
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var tag = { type: Mode.Tag, name: match[1] + match[2], raw: raw };
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if (state.mode === Mode.Attr) {
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state.lastTag = tag;
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}
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if (tag.name.toLowerCase() === 'script') {
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state.isScript = true;
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} else if (tag.name.toLowerCase() === '/script') {
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state.isScript = false;
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}
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if (state.mode === Mode.Attr) {
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this._writePending(tag);
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} else {
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this._write(tag);
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}
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} else {
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//TODO: end of tag?
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//TODO: push to pending?
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state.needData = true;
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}
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};
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Parser.re_parseAttr_findName = /\s*([^=<>\s'"\/]+)\s*/g;
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Parser.prototype._parseAttr_findName = function Parser$_parseAttr_findName () {
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Parser.re_parseAttr_findName.lastIndex = this._state.pos;
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var match = Parser.re_parseAttr_findName.exec(this._state.data);
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if (!match) {
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return null;
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}
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if (this._state.pos + match[0].length !== Parser.re_parseAttr_findName.lastIndex) {
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return null;
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}
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return {
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match: match[0]
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, name: match[1]
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};
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};
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Parser.re_parseAttr_findValue = /\s*=\s*(?:'([^']*)'|"([^"]*)"|([^'"\s\/>]+))\s*/g;
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Parser.re_parseAttr_findValue_last = /\s*=\s*['"]?(.*)$/g;
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Parser.prototype._parseAttr_findValue = function Parser$_parseAttr_findValue () {
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var state = this._state;
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Parser.re_parseAttr_findValue.lastIndex = state.pos;
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var match = Parser.re_parseAttr_findValue.exec(state.data);
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if (!match) {
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if (!state.done) {
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return null;
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}
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Parser.re_parseAttr_findValue_last.lastIndex = state.pos;
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match = Parser.re_parseAttr_findValue_last.exec(state.data);
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if (!match) {
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return null;
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}
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return {
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match: match[0]
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, value: (match[1] !== '') ? match[1] : null
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};
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}
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if (state.pos + match[0].length !== Parser.re_parseAttr_findValue.lastIndex) {
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return null;
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}
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return {
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match: match[0]
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, value: match[1] || match[2] || match[3]
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};
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};
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Parser.re_parseAttr_splitValue = /\s*=\s*['"]?/g;
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Parser.re_parseAttr_selfClose = /(\s*\/\s*)(>?)/g;
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Parser.prototype._parseAttr = function Parser$_parseAttr () {
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var state = this._state;
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var name_data = this._parseAttr_findName(state);
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if (!name_data || name_data.name === '?') {
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Parser.re_parseAttr_selfClose.lastIndex = state.pos;
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var matchTrailingSlash = Parser.re_parseAttr_selfClose.exec(state.data);
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if (matchTrailingSlash && matchTrailingSlash.index === state.pos) {
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if (!state.done && !matchTrailingSlash[2] && state.pos + matchTrailingSlash[0].length === state.data.length) {
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state.needData = true;
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return;
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}
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state.lastTag.raw += matchTrailingSlash[1];
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// state.output.push({ type: Mode.Tag, name: '/' + state.lastTag.name, raw: null });
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this._write({ type: Mode.Tag, name: '/' + state.lastTag.name, raw: null });
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state.pos += matchTrailingSlash[1].length;
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}
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var foundPos = state.data.indexOf('>', state.pos);
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if (foundPos < 0) {
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if (state.done) { //TODO: is this needed?
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state.lastTag.raw += state.data.substr(state.pos);
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state.pos = state.data.length;
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return;
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}
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state.needData = true;
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} else {
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// state.lastTag = null;
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state.pos = foundPos + 1;
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state.mode = Mode.Text;
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}
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return;
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}
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if (!state.done && state.pos + name_data.match.length === state.data.length) {
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state.needData = true;
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return null;
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}
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state.pos += name_data.match.length;
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var value_data = this._parseAttr_findValue(state);
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if (value_data) {
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if (!state.done && state.pos + value_data.match.length === state.data.length) {
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state.needData = true;
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state.pos -= name_data.match.length;
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return;
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}
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state.pos += value_data.match.length;
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} else {
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Parser.re_parseAttr_splitValue.lastIndex = state.pos;
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if (Parser.re_parseAttr_splitValue.exec(state.data)) {
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state.needData = true;
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state.pos -= name_data.match.length;
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return;
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}
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value_data = {
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match: ''
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, value: null
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};
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}
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state.lastTag.raw += name_data.match + value_data.match;
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this._writePending({ type: Mode.Attr, name: name_data.name, data: value_data.value });
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};
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Parser.re_parseCData_findEnding = /\]{1,2}$/;
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Parser.prototype._parseCData = function Parser$_parseCData () {
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var state = this._state;
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var foundPos = state.data.indexOf(']]>', state.pos);
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if (foundPos < 0 && state.done) {
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foundPos = state.data.length;
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}
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if (foundPos < 0) {
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Parser.re_parseCData_findEnding.lastIndex = state.pos;
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var matchPartialCDataEnd = Parser.re_parseCData_findEnding.exec(state.data);
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if (matchPartialCDataEnd) {
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state.needData = true;
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return;
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}
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if (!state.pendingText) {
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state.pendingText = [];
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}
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state.pendingText.push(state.data.substr(state.pos, state.data.length));
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state.pos = state.data.length;
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state.needData = true;
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} else {
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var text;
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if (state.pendingText) {
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state.pendingText.push(state.data.substring(state.pos, foundPos));
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text = state.pendingText.join('');
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state.pendingText = null;
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} else {
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text = state.data.substring(state.pos, foundPos);
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}
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this._write({ type: Mode.CData, data: text });
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state.mode = Mode.Text;
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state.pos = foundPos + 3;
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}
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};
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Parser.prototype._parseDoctype = function Parser$_parseDoctype () {
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var state = this._state;
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var foundPos = state.data.indexOf('>', state.pos);
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if (foundPos < 0 && state.done) {
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foundPos = state.data.length;
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}
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if (foundPos < 0) {
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Parser.re_parseCData_findEnding.lastIndex = state.pos;
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if (!state.pendingText) {
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state.pendingText = [];
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}
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state.pendingText.push(state.data.substr(state.pos, state.data.length));
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state.pos = state.data.length;
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state.needData = true;
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} else {
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var text;
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if (state.pendingText) {
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state.pendingText.push(state.data.substring(state.pos, foundPos));
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text = state.pendingText.join('');
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state.pendingText = null;
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} else {
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text = state.data.substring(state.pos, foundPos);
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}
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this._write({ type: Mode.Doctype, data: text });
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state.mode = Mode.Text;
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state.pos = foundPos + 1;
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}
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};
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Parser.re_parseComment_findEnding = /\-{1,2}$/;
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Parser.prototype._parseComment = function Parser$_parseComment () {
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var state = this._state;
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var foundPos = state.data.indexOf('-->', state.pos);
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if (foundPos < 0 && state.done) {
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foundPos = state.data.length;
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}
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if (foundPos < 0) {
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Parser.re_parseComment_findEnding.lastIndex = state.pos;
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var matchPartialCommentEnd = Parser.re_parseComment_findEnding.exec(state.data);
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if (matchPartialCommentEnd) {
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state.needData = true;
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return;
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}
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if (!state.pendingText) {
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state.pendingText = [];
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}
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state.pendingText.push(state.data.substr(state.pos, state.data.length));
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state.pos = state.data.length;
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state.needData = true;
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} else {
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var text;
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if (state.pendingText) {
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state.pendingText.push(state.data.substring(state.pos, foundPos));
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text = state.pendingText.join('');
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state.pendingText = null;
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} else {
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text = state.data.substring(state.pos, foundPos);
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}
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// state.output.push({ type: Mode.Comment, data: text });
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this._write({ type: Mode.Comment, data: text });
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state.mode = Mode.Text;
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state.pos = foundPos + 3;
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}
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};
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function HtmlBuilder (callback, options) {
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this.reset();
|
|
this._options = options ? options : { };
|
|
if (this._options.ignoreWhitespace === undefined) {
|
|
this._options.ignoreWhitespace = false; //Keep whitespace-only text nodes
|
|
}
|
|
if (this._options.includeLocation === undefined) {
|
|
this._options.includeLocation = false; //Include position of element (row, col) on nodes
|
|
}
|
|
if (this._options.verbose === undefined) {
|
|
this._options.verbose = true; //Keep data property for tags and raw property for all
|
|
}
|
|
if (this._options.enforceEmptyTags === undefined) {
|
|
this._options.enforceEmptyTags = true; //Don't allow children for HTML tags defined as empty in spec
|
|
}
|
|
if (this._options.caseSensitiveTags === undefined) {
|
|
this._options.caseSensitiveTags = false; //Lowercase all tag names
|
|
}
|
|
if (this._options.caseSensitiveAttr === undefined) {
|
|
this._options.caseSensitiveAttr = false; //Lowercase all attribute names
|
|
}
|
|
if ((typeof callback) == "function") {
|
|
this._callback = callback;
|
|
}
|
|
}
|
|
|
|
//**"Static"**//
|
|
//HTML Tags that shouldn't contain child nodes
|
|
HtmlBuilder._emptyTags = {
|
|
area: 1
|
|
, base: 1
|
|
, basefont: 1
|
|
, br: 1
|
|
, col: 1
|
|
, frame: 1
|
|
, hr: 1
|
|
, img: 1
|
|
, input: 1
|
|
, isindex: 1
|
|
, link: 1
|
|
, meta: 1
|
|
, param: 1
|
|
, embed: 1
|
|
, '?xml': 1
|
|
};
|
|
//Regex to detect whitespace only text nodes
|
|
HtmlBuilder.reWhitespace = /^\s*$/;
|
|
|
|
//**Public**//
|
|
//Properties//
|
|
HtmlBuilder.prototype.dom = null; //The hierarchical object containing the parsed HTML
|
|
//Methods//
|
|
//Resets the builder back to starting state
|
|
HtmlBuilder.prototype.reset = function HtmlBuilder$reset() {
|
|
this.dom = [];
|
|
// this._raw = [];
|
|
this._done = false;
|
|
this._tagStack = [];
|
|
this._lastTag = null;
|
|
this._tagStack.last = function HtmlBuilder$_tagStack$last () {
|
|
return(this.length ? this[this.length - 1] : null);
|
|
};
|
|
this._line = 1;
|
|
this._col = 1;
|
|
};
|
|
//Signals the builder that parsing is done
|
|
HtmlBuilder.prototype.done = function HtmlBuilder$done () {
|
|
this._done = true;
|
|
this.handleCallback(null);
|
|
};
|
|
|
|
HtmlBuilder.prototype.error = function HtmlBuilder$error (error) {
|
|
this.handleCallback(error);
|
|
};
|
|
|
|
HtmlBuilder.prototype.handleCallback = function HtmlBuilder$handleCallback (error) {
|
|
if ((typeof this._callback) != "function") {
|
|
if (error) {
|
|
throw error;
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
this._callback(error, this.dom);
|
|
};
|
|
|
|
HtmlBuilder.prototype.isEmptyTag = function HtmlBuilder$isEmptyTag (element) {
|
|
var name = element.name.toLowerCase();
|
|
if (name.charAt(0) == '?') {
|
|
return true;
|
|
}
|
|
if (name.charAt(0) == '/') {
|
|
name = name.substring(1);
|
|
}
|
|
return this._options.enforceEmptyTags && !!HtmlBuilder._emptyTags[name];
|
|
};
|
|
|
|
HtmlBuilder.prototype._getLocation = function HtmlBuilder$_getLocation () {
|
|
return { line: this._line, col: this._col };
|
|
};
|
|
|
|
// HtmlBuilder.reLineSplit = /(\r\n|\r|\n)/g;
|
|
HtmlBuilder.prototype._updateLocation = function HtmlBuilder$_updateLocation (node) {
|
|
var positionData = (node.type === Mode.Tag) ? node.raw : node.data;
|
|
if (positionData === null) {
|
|
return;
|
|
}
|
|
// var lines = positionData.split(HtmlBuilder.reLineSplit);
|
|
var lines = positionData.split("\n");
|
|
this._line += lines.length - 1;
|
|
if (lines.length > 1) {
|
|
this._col = 1;
|
|
}
|
|
this._col += lines[lines.length - 1].length;
|
|
if (node.type === Mode.Tag) {
|
|
this._col += 2;
|
|
} else if (node.type === Mode.Comment) {
|
|
this._col += 7;
|
|
} else if (node.type === Mode.CData) {
|
|
this._col += 12;
|
|
}
|
|
};
|
|
|
|
HtmlBuilder.prototype._copyElement = function HtmlBuilder$_copyElement (element) {
|
|
var newElement = { type: element.type };
|
|
|
|
if (this._options.verbose && element['raw'] !== undefined) {
|
|
newElement.raw = element.raw;
|
|
}
|
|
if (element['name'] !== undefined) {
|
|
switch (element.type) {
|
|
|
|
case Mode.Tag:
|
|
newElement.name = this._options.caseSensitiveTags ?
|
|
element.name
|
|
:
|
|
element.name.toLowerCase()
|
|
;
|
|
break;
|
|
|
|
case Mode.Attr:
|
|
newElement.name = this._options.caseSensitiveAttr ?
|
|
element.name
|
|
:
|
|
element.name.toLowerCase()
|
|
;
|
|
break;
|
|
|
|
default:
|
|
newElement.name = this._options.caseSensitiveTags ?
|
|
element.name
|
|
:
|
|
element.name.toLowerCase()
|
|
;
|
|
break;
|
|
|
|
}
|
|
}
|
|
if (element['data'] !== undefined) {
|
|
newElement.data = element.data;
|
|
}
|
|
if (element.location) {
|
|
newElement.location = { line: element.location.line, col: element.location.col };
|
|
}
|
|
|
|
return newElement;
|
|
};
|
|
|
|
HtmlBuilder.prototype.write = function HtmlBuilder$write (element) {
|
|
// this._raw.push(element);
|
|
if (this._done) {
|
|
this.handleCallback(new Error("Writing to the builder after done() called is not allowed without a reset()"));
|
|
}
|
|
if (this._options.includeLocation) {
|
|
if (element.type !== Mode.Attr) {
|
|
element.location = this._getLocation();
|
|
this._updateLocation(element);
|
|
}
|
|
}
|
|
if (element.type === Mode.Text && this._options.ignoreWhitespace) {
|
|
if (HtmlBuilder.reWhitespace.test(element.data)) {
|
|
return;
|
|
}
|
|
}
|
|
var parent;
|
|
var node;
|
|
if (!this._tagStack.last()) { //There are no parent elements
|
|
//If the element can be a container, add it to the tag stack and the top level list
|
|
if (element.type === Mode.Tag) {
|
|
if (element.name.charAt(0) != "/") { //Ignore closing tags that obviously don't have an opening tag
|
|
node = this._copyElement(element);
|
|
this.dom.push(node);
|
|
if (!this.isEmptyTag(node)) { //Don't add tags to the tag stack that can't have children
|
|
this._tagStack.push(node);
|
|
}
|
|
this._lastTag = node;
|
|
}
|
|
} else if (element.type === Mode.Attr && this._lastTag) {
|
|
if (!this._lastTag.attributes) {
|
|
this._lastTag.attributes = {};
|
|
}
|
|
this._lastTag.attributes[this._options.caseSensitiveAttr ? element.name : element.name.toLowerCase()] =
|
|
element.data;
|
|
} else { //Otherwise just add to the top level list
|
|
this.dom.push(this._copyElement(element));
|
|
}
|
|
} else { //There are parent elements
|
|
//If the element can be a container, add it as a child of the element
|
|
//on top of the tag stack and then add it to the tag stack
|
|
if (element.type === Mode.Tag) {
|
|
if (element.name.charAt(0) == "/") {
|
|
//This is a closing tag, scan the tagStack to find the matching opening tag
|
|
//and pop the stack up to the opening tag's parent
|
|
var baseName = this._options.caseSensitiveTags ?
|
|
element.name.substring(1)
|
|
:
|
|
element.name.substring(1).toLowerCase()
|
|
;
|
|
if (!this.isEmptyTag(element)) {
|
|
var pos = this._tagStack.length - 1;
|
|
while (pos > -1 && this._tagStack[pos--].name != baseName) { }
|
|
if (pos > -1 || this._tagStack[0].name == baseName) {
|
|
while (pos < this._tagStack.length - 1) {
|
|
this._tagStack.pop();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else { //This is not a closing tag
|
|
parent = this._tagStack.last();
|
|
if (element.type === Mode.Attr) {
|
|
if (!parent.attributes) {
|
|
parent.attributes = {};
|
|
}
|
|
parent.attributes[this._options.caseSensitiveAttr ? element.name : element.name.toLowerCase()] =
|
|
element.data;
|
|
} else {
|
|
node = this._copyElement(element);
|
|
if (!parent.children) {
|
|
parent.children = [];
|
|
}
|
|
parent.children.push(node);
|
|
if (!this.isEmptyTag(node)) { //Don't add tags to the tag stack that can't have children
|
|
this._tagStack.push(node);
|
|
}
|
|
if (element.type === Mode.Tag) {
|
|
this._lastTag = node;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else { //This is not a container element
|
|
parent = this._tagStack.last();
|
|
if (element.type === Mode.Attr) {
|
|
if (!parent.attributes) {
|
|
parent.attributes = {};
|
|
}
|
|
parent.attributes[this._options.caseSensitiveAttr ? element.name : element.name.toLowerCase()] =
|
|
element.data;
|
|
} else {
|
|
if (!parent.children) {
|
|
parent.children = [];
|
|
}
|
|
parent.children.push(this._copyElement(element));
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
//**Private**//
|
|
//Properties//
|
|
HtmlBuilder.prototype._options = null; //Builder options for how to behave
|
|
HtmlBuilder.prototype._callback = null; //Callback to respond to when parsing done
|
|
HtmlBuilder.prototype._done = false; //Flag indicating whether builder has been notified of parsing completed
|
|
HtmlBuilder.prototype._tagStack = null; //List of parents to the currently element being processed
|
|
//Methods//
|
|
|
|
|
|
function RssBuilder (callback) {
|
|
RssBuilder.super_.call(this, callback, { ignoreWhitespace: true, verbose: false, enforceEmptyTags: false, caseSensitiveTags: true });
|
|
}
|
|
inherits(RssBuilder, HtmlBuilder);
|
|
|
|
RssBuilder.prototype.done = function RssBuilder$done () {
|
|
var feed = {};
|
|
var feedRoot;
|
|
|
|
var found = DomUtils.getElementsByTagName(function (value) { return(value == "rss" || value == "feed"); }, this.dom, false);
|
|
if (found.length) {
|
|
feedRoot = found[0];
|
|
}
|
|
if (feedRoot) {
|
|
if (feedRoot.name == "rss") {
|
|
feed.type = "rss";
|
|
feedRoot = feedRoot.children[0]; //<channel/>
|
|
feed.id = "";
|
|
try {
|
|
feed.title = DomUtils.getElementsByTagName("title", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.link = DomUtils.getElementsByTagName("link", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.description = DomUtils.getElementsByTagName("description", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.updated = new Date(DomUtils.getElementsByTagName("lastBuildDate", feedRoot.children, false)[0].children[0].data);
|
|
} catch (ex) { }
|
|
try {
|
|
feed.author = DomUtils.getElementsByTagName("managingEditor", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
feed.items = [];
|
|
DomUtils.getElementsByTagName("item", feedRoot.children).forEach(function (item, index, list) {
|
|
var entry = {};
|
|
try {
|
|
entry.id = DomUtils.getElementsByTagName("guid", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.title = DomUtils.getElementsByTagName("title", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.link = DomUtils.getElementsByTagName("link", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.description = DomUtils.getElementsByTagName("description", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.pubDate = new Date(DomUtils.getElementsByTagName("pubDate", item.children, false)[0].children[0].data);
|
|
} catch (ex) { }
|
|
feed.items.push(entry);
|
|
});
|
|
} else {
|
|
feed.type = "atom";
|
|
try {
|
|
feed.id = DomUtils.getElementsByTagName("id", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.title = DomUtils.getElementsByTagName("title", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.link = DomUtils.getElementsByTagName("link", feedRoot.children, false)[0].attributes.href;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.description = DomUtils.getElementsByTagName("subtitle", feedRoot.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
feed.updated = new Date(DomUtils.getElementsByTagName("updated", feedRoot.children, false)[0].children[0].data);
|
|
} catch (ex) { }
|
|
try {
|
|
feed.author = DomUtils.getElementsByTagName("email", feedRoot.children, true)[0].children[0].data;
|
|
} catch (ex) { }
|
|
feed.items = [];
|
|
DomUtils.getElementsByTagName("entry", feedRoot.children).forEach(function (item, index, list) {
|
|
var entry = {};
|
|
try {
|
|
entry.id = DomUtils.getElementsByTagName("id", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.title = DomUtils.getElementsByTagName("title", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.link = DomUtils.getElementsByTagName("link", item.children, false)[0].attributes.href;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.description = DomUtils.getElementsByTagName("summary", item.children, false)[0].children[0].data;
|
|
} catch (ex) { }
|
|
try {
|
|
entry.pubDate = new Date(DomUtils.getElementsByTagName("updated", item.children, false)[0].children[0].data);
|
|
} catch (ex) { }
|
|
feed.items.push(entry);
|
|
});
|
|
}
|
|
|
|
this.dom = feed;
|
|
}
|
|
RssBuilder.super_.prototype.done.call(this);
|
|
};
|
|
|
|
var DomUtils = {
|
|
testElement: function DomUtils$testElement (options, element) {
|
|
if (!element) {
|
|
return false;
|
|
}
|
|
|
|
for (var key in options) {
|
|
if (!options.hasOwnProperty(key)) {
|
|
continue;
|
|
}
|
|
if (key == "tag_name") {
|
|
if (element.type !== Mode.Tag) {
|
|
return false;
|
|
}
|
|
if (!options["tag_name"](element.name)) {
|
|
return false;
|
|
}
|
|
} else if (key == "tag_type") {
|
|
if (!options["tag_type"](element.type)) {
|
|
return false;
|
|
}
|
|
} else if (key == "tag_contains") {
|
|
if (element.type !== Mode.Text && element.type !== Mode.Comment && element.type !== Mode.CData) {
|
|
return false;
|
|
}
|
|
if (!options["tag_contains"](element.data)) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (!element.attributes || !options[key](element.attributes[key])) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
, getElements: function DomUtils$getElements (options, currentElement, recurse, limit) {
|
|
recurse = (recurse === undefined || recurse === null) || !!recurse;
|
|
limit = isNaN(parseInt(limit)) ? -1 : parseInt(limit);
|
|
|
|
if (!currentElement) {
|
|
return([]);
|
|
}
|
|
|
|
var found = [];
|
|
var elementList;
|
|
|
|
function getTest (checkVal) {
|
|
return function (value) {
|
|
return(value == checkVal);
|
|
};
|
|
}
|
|
for (var key in options) {
|
|
if ((typeof options[key]) != "function") {
|
|
options[key] = getTest(options[key]);
|
|
}
|
|
}
|
|
|
|
if (DomUtils.testElement(options, currentElement)) {
|
|
found.push(currentElement);
|
|
}
|
|
|
|
if (limit >= 0 && found.length >= limit) {
|
|
return(found);
|
|
}
|
|
|
|
if (recurse && currentElement.children) {
|
|
elementList = currentElement.children;
|
|
} else if (currentElement instanceof Array) {
|
|
elementList = currentElement;
|
|
} else {
|
|
return(found);
|
|
}
|
|
|
|
for (var i = 0; i < elementList.length; i++) {
|
|
found = found.concat(DomUtils.getElements(options, elementList[i], recurse, limit));
|
|
if (limit >= 0 && found.length >= limit) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return(found);
|
|
}
|
|
|
|
, getElementById: function DomUtils$getElementById (id, currentElement, recurse) {
|
|
var result = DomUtils.getElements({ id: id }, currentElement, recurse, 1);
|
|
return(result.length ? result[0] : null);
|
|
}
|
|
|
|
, getElementsByTagName: function DomUtils$getElementsByTagName (name, currentElement, recurse, limit) {
|
|
return(DomUtils.getElements({ tag_name: name }, currentElement, recurse, limit));
|
|
}
|
|
|
|
, getElementsByTagType: function DomUtils$getElementsByTagType (type, currentElement, recurse, limit) {
|
|
return(DomUtils.getElements({ tag_type: type }, currentElement, recurse, limit));
|
|
}
|
|
};
|
|
|
|
exports.Parser = Parser;
|
|
|
|
exports.HtmlBuilder = HtmlBuilder;
|
|
|
|
exports.RssBuilder = RssBuilder;
|
|
|
|
exports.ElementType = Mode;
|
|
|
|
exports.DomUtils = DomUtils;
|
|
|
|
})();
|