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main.js
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/**********************************************************************
node-feedparser - A robust RSS, Atom, RDF parser for node.
http://github.com/danmactough/node-feedparser
Copyright (c) 2011, 2012, 2013 Dan MacTough and contributors
http://yabfog.com
**********************************************************************/
/*jshint sub:true, laxcomma:true */
/**
* Module dependencies.
*/
var sax = require('sax')
, addressparser = require('addressparser')
, indexOfObject = require('array-indexofobject')
, util = require('util')
, TransformStream = require('readable-stream').Transform
, utils = require('./utils');
/**
* FeedParser constructor. Most apps will only use one instance.
*
* Exposes a duplex (transform) stream to parse a feed.
*
* Each article/post in the feed will have the following keys:
* - title {String}
* - description {String}
* - summary {String}
* - date {Date} (or null)
* - pubdate {Date} (or null)
* - link {String}
* - origlink {String}
* - author {String}
* - guid {String}
* - comments {String}
* - image {Object}
* - categories {Array}
* - source {Object}
* - enclosures {Array}
* - meta {Object}
* - Object.keys(meta):
* - #ns {Array} key,value pairs of each namespace declared for the feed
* - #type {String} one of 'atom', 'rss', 'rdf'
* - #version {String}
* - title {String}
* - description {String}
* - date {Date} (or null)
* - pubdate {Date} (or null)
* - link {String} i.e., to the website, not the feed
* - xmlurl {String} the canonical URL of the feed, as declared by the feed
* - author {String}
* - language {String}
* - image {Object}
* - favicon {String}
* - copyright {String}
* - generator {String}
* - categories {Array}
*
* @param {Object} options
* @api public
*/
function FeedParser (options) {
if (!(this instanceof FeedParser)) return new FeedParser(options);
TransformStream.call(this);
this._readableState.objectMode = true;
this._readableState.highWaterMark = 16; // max. # of output nodes buffered
this.init();
this.parseOpts(options);
// See https://github.com/isaacs/sax-js for more info
this.stream = sax.createStream(this.options.strict /* strict mode - no by default */, {lowercase: true, xmlns: true });
this.stream.on('error', this.handleSaxError.bind(this));
this.stream.on('processinginstruction', this.handleProcessingInstruction.bind(this));
this.stream.on('opentag', this.handleOpenTag.bind(this));
this.stream.on('closetag',this.handleCloseTag.bind(this));
this.stream.on('text', this.handleText.bind(this));
this.stream.on('cdata', this.handleText.bind(this));
this.stream.on('end', this.handleEnd.bind(this));
}
util.inherits(FeedParser, TransformStream);
/*
* Initializes the SAX stream
*
* Initializes the class-variables
*/
FeedParser.prototype.init = function (){
this.meta = {
'#ns': []
, '@': []
, '#xml': {}
};
this._emitted_meta = false;
this.stack = [];
this.xmlbase = [];
this.in_xhtml = false;
this.xhtml = {}; /* Where to store xhtml elements as associative
array with keys: '#' (containing the text)
and '#name' (containing the XML element name) */
this.errors = [];
};
/*
* Parse options
*/
FeedParser.prototype.parseOpts = function (options) {
this.options = options || {};
if (!('strict' in this.options)) this.options.strict = false;
if (!('normalize' in this.options)) this.options.normalize = true;
if (!('addmeta' in this.options)) this.options.addmeta = true;
if (!('resume_saxerror' in this.options)) this.options.resume_saxerror = true;
if ('MAX_BUFFER_LENGTH' in this.options) {
sax.MAX_BUFFER_LENGTH = this.options.MAX_BUFFER_LENGTH; // set to Infinity to have unlimited buffers
} else {
sax.MAX_BUFFER_LENGTH = 16 * 1024 * 1024; // 16M versus the 64K default
}
if (this.options.feedurl) this.xmlbase.unshift({ '#name': 'xml', '#': this.options.feedurl});
};
FeedParser.prototype.handleEnd = function (){
// We made it to the end without throwing, but let's make sure we were actually
// parsing a feed
if (!(this.meta && this.meta['#type'])) {
var e = new Error('Not a feed');
return this.handleError(e);
}
this.push(null);
};
FeedParser.prototype.handleSaxError = function (e) {
this.emit('error', e);
if (this.options.resume_saxerror) {
this.resumeSaxError();
}
};
FeedParser.prototype.resumeSaxError = function () {
if (this.stream._parser) {
this.stream._parser.error = null;
this.stream._parser.resume();
}
};
FeedParser.prototype.handleError = function (e){
this.emit('error', e);
};
FeedParser.prototype.handleProcessingInstruction = function (node) {
if (node.name !== 'xml') return;
this.meta['#xml'] = node.body.trim().split(' ').reduce(function (map, attr) {
var parts = attr.split('=');
map[parts[0]] = parts[1] && parts[1].length > 2 && parts[1].match(/^.(.*?).$/)[1];
return map;
}, {});
};
FeedParser.prototype.handleOpenTag = function (node){
var n = {};
n['#name'] = node.name; // Avoid namespace collissions later...
n['#prefix'] = node.prefix; // The current ns prefix
n['#local'] = node.local; // The current element name, sans prefix
n['#uri'] = node.uri; // The current ns uri
n['@'] = {};
n['#'] = '';
if (Object.keys(node.attributes).length) {
n['@'] = this.handleAttributes(node.attributes, n['#name']);
}
if (this.in_xhtml && this.xhtml['#name'] != n['#name']) { // We are in an xhtml node
// This builds the opening tag, e.g., <div id='foo' class='bar'>
this.xhtml['#'] += '<'+n['#name'];
Object.keys(n['@']).forEach(function(name){
this.xhtml['#'] += ' '+ name +'="'+ n['@'][name] + '"';
}, this);
this.xhtml['#'] += '>';
} else if ( this.stack.length === 0 &&
(n['#name'] === 'rss' ||
(n['#local'] === 'rdf' && utils.nslookup([n['#uri']], 'rdf')) ||
(n['#local'] === 'feed'&& utils.nslookup([n['#uri']], 'atom')) ) ) {
Object.keys(n['@']).forEach(function(name) {
var o = {};
if (name != 'version') {
o[name] = n['@'][name];
this.meta['@'].push(o);
}
}, this);
switch(n['#local']) {
case 'rss':
this.meta['#type'] = 'rss';
this.meta['#version'] = n['@']['version'];
break;
case 'rdf':
this.meta['#type'] = 'rdf';
this.meta['#version'] = n['@']['version'] || '1.0';
break;
case 'feed':
this.meta['#type'] = 'atom';
this.meta['#version'] = n['@']['version'] || '1.0';
break;
}
}
this.stack.unshift(n);
};
FeedParser.prototype.handleCloseTag = function (el){
var node = { '#name' : el
, '#prefix' : ''
, '#local' : '' }
, stdEl
, item
, baseurl
;
var n = this.stack.shift();
el = el.split(':');
if (el.length > 1 && el[0] === n['#prefix']) {
if (utils.nslookup(n['#uri'], 'atom')) {
node['#prefix'] = el[0];
node['#local'] = el.slice(1).join(':');
node['#type'] = 'atom';
} else if (utils.nslookup(n['#uri'], 'rdf')) {
node['#prefix'] = el[0];
node['#local'] = el.slice(1).join(':');
node['#type'] = 'rdf';
} else {
node['#prefix'] = utils.nsprefix(n['#uri']) || n['#prefix'];
node['#local'] = el.slice(1).join(':');
}
} else {
node['#local'] = node['#name'];
node['#type'] = utils.nsprefix(n['#uri']) || n['#prefix'];
}
delete n['#name'];
delete n['#local'];
delete n['#prefix'];
delete n['#uri'];
if (this.xmlbase && this.xmlbase.length) {
baseurl = this.xmlbase[0]['#'];
}
if (baseurl && (node['#local'] === 'logo' || node['#local'] === 'icon') && node['#type'] === 'atom') {
// Apply xml:base to these elements as they appear
// rather than leaving it to the ultimate parser
n['#'] = utils.resolve(baseurl, n['#']);
}
if (this.xmlbase.length && (el == this.xmlbase[0]['#name'])) {
void this.xmlbase.shift();
}
if (this.in_xhtml) {
if (node['#name'] == this.xhtml['#name']) { // The end of the XHTML
// Add xhtml data to the container element
n['#'] += this.xhtml['#'].trim();
// Clear xhtml nodes from the tree
for (var key in n) {
if (key != '@' && key != '#') {
delete n[key];
}
}
this.xhtml = {};
this.in_xhtml = false;
} else { // Somewhere in the middle of the XHTML
this.xhtml['#'] += '</' + node['#name'] + '>';
}
}
if ('#' in n) {
if (n['#'].match(/^\s*$/)) {
// Delete text nodes with nothing by whitespace
delete n['#'];
} else {
n['#'] = n['#'].trim();
if (Object.keys(n).length === 1) {
// If there is only one text node, hoist it
n = n['#'];
}
}
}
if (node['#name'] === 'item' ||
node['#name'] === 'entry' ||
(node['#local'] === 'item' && (node['#prefix'] === '' || node['#type'] === 'rdf')) ||
(node['#local'] == 'entry' && (node['#prefix'] === '' || node['#type'] === 'atom'))) { // We have an article!
if (!this.meta.title) { // We haven't yet parsed all the metadata
utils.merge(this.meta, this.handleMeta(this.stack[0], this.meta['#type'], this.options));
if (!this._emitted_meta) {
this.emit('meta', this.meta);
this._emitted_meta = true;
}
}
if (!baseurl && this.xmlbase && this.xmlbase.length) { // handleMeta was able to infer a baseurl without xml:base or options.feedurl
n = utils.reresolve(n, this.xmlbase[0]['#']);
}
item = this.handleItem(n, this.meta['#type'], this.options);
if (this.options.addmeta) {
item.meta = this.meta;
}
if (this.meta.author && !item.author) item.author = this.meta.author;
this.push(item);
} else if (!this.meta.title && // We haven't yet parsed all the metadata
(node['#name'] === 'channel' ||
node['#name'] === 'feed' ||
(node['#local'] === 'channel' && (node['#prefix'] === '' || node['#type'] === 'rdf')) ||
(node['#local'] === 'feed' && (node['#prefix'] === '' || node['#type'] === 'atom')) ) ) {
utils.merge(this.meta, this.handleMeta(n, this.meta['#type'], this.options));
if (!this._emitted_meta) {
this.emit('meta', this.meta);
this._emitted_meta = true;
}
}
if (this.stack.length > 0) {
if (node['#prefix'] && node['#local'] && !node['#type']) {
stdEl = node['#prefix'] + ':' + node['#local'];
} else if (node['#name'] && node['#type'] && node['#type'] !== this.meta['#type']) {
stdEl = node['#name'];
} else {
stdEl = node['#local'] || node['#name'];
}
if (!this.stack[0].hasOwnProperty(stdEl)) {
this.stack[0][stdEl] = n;
} else if (this.stack[0][stdEl] instanceof Array) {
this.stack[0][stdEl].push(n);
} else {
this.stack[0][stdEl] = [this.stack[0][stdEl], n];
}
}
};
FeedParser.prototype.handleText = function (text){
if (this.in_xhtml) {
this.xhtml['#'] += text;
} else {
if (this.stack.length) {
if (this.stack[0] && '#' in this.stack[0]) {
this.stack[0]['#'] += text;
} else {
this.stack[0]['#'] = text;
}
}
}
};
FeedParser.prototype.handleAttributes = function handleAttributes (attrs, el) {
/*
* Using the sax.js option { xmlns: true }
* attrs is an array of objects (not strings) having the following properties
* name - e.g., xmlns:dc or href
* value
* prefix - the first part of the name of the attribute (before the colon)
* local - the second part of the name of the attribute (after the colon)
* uri - the uri of the namespace
*
*/
var basepath = ''
, simplifiedAttributes = {}
;
if (this.xmlbase && this.xmlbase.length) {
basepath = this.xmlbase[0]['#'];
}
Object.keys(attrs).forEach(function(key){
var attr = attrs[key]
, ns = {}
, prefix = ''
;
if (attr.prefix === 'xmlns') {
ns[attr.name] = attr.value;
this.meta['#ns'].push(ns);
}
// If the feed is using a non-default prefix, we'll use it, too
// But we force the use of the 'xml' prefix
if (attr.uri && attr.prefix && !utils.nslookup(attr.uri, attr.prefix) || utils.nslookup(attr.uri, 'xml')) {
prefix = ( utils.nsprefix(attr.uri) || attr.prefix ) + ( attr.local ? ':' : '' );
}
if (basepath && (attr.local == 'href' || attr.local == 'src' || attr.local == 'uri')) {
// Apply xml:base to these elements as they appear
// rather than leaving it to the ultimate parser
attr.value = utils.resolve(basepath, attr.value);
} else if (attr.local === 'base' && utils.nslookup(attr.uri, 'xml')) {
// Keep track of the xml:base for the current node
if (basepath) {
attr.value = utils.resolve(basepath, attr.value);
}
this.xmlbase.unshift({ '#name': el, '#': attr.value});
} else if (attr.name === 'type' && attr.value === 'xhtml') {
this.in_xhtml = true;
this.xhtml = {'#name': el, '#': ''};
}
simplifiedAttributes[prefix + attr.local] = attr.value ? attr.value.trim() : '';
}, this);
return simplifiedAttributes;
};
FeedParser.prototype.handleMeta = function handleMeta (node, type, options) {
if (!type || !node) return {};
var meta = {}
, normalize = !options || (options && options.normalize)
;
if (normalize) {
['title','description','date', 'pubdate', 'pubDate','link', 'xmlurl', 'xmlUrl','author','language','favicon','copyright','generator'].forEach(function (property){
meta[property] = null;
});
meta.cloud = {};
meta.image = {};
meta.categories = [];
}
Object.keys(node).forEach(function(name){
var el = node[name];
if (normalize) {
switch(name){
case('title'):
meta.title = utils.get(el);
break;
case('description'):
case('subtitle'):
meta.description = utils.get(el);
break;
case('pubdate'):
case('lastbuilddate'):
case('published'):
case('modified'):
case('updated'):
case('dc:date'):
var date = utils.get(el) ? utils.get(el) : null;
if (!date) break;
if (meta.pubdate === null || name == 'pubdate' || name == 'published')
meta.pubdate = meta.pubDate = date;
if (meta.date === null || name == 'lastbuilddate' || name == 'modified' || name == 'updated')
meta.date = date;
break;
case('link'):
case('atom:link'):
case('atom10:link'):
if (Array.isArray(el)) {
el.forEach(function (link){
if (link['@']['href']) { // Atom
if (utils.get(link['@'], 'rel')) {
if (link['@']['rel'] == 'alternate') {
if (!meta.link) meta.link = link['@']['href'];
}
else if (link['@']['rel'] == 'self') {
meta.xmlurl = meta.xmlUrl = link['@']['href'];
if (this.xmlbase && this.xmlbase.length === 0) {
this.xmlbase.unshift({ '#name': 'xml', '#': meta.xmlurl});
this.stack[0] = utils.reresolve(this.stack[0], meta.xmlurl);
}
}
else if (link['@']['rel'] == 'hub' && !(meta.cloud.href || meta.cloud.domain)) {
meta.cloud.type = 'hub';
meta.cloud.href = link['@']['href'];
}
} else {
if (!meta.link) meta.link = link['@']['href'];
}
} else if (Object.keys(link['@']).length === 0) { // RSS
meta.link = utils.get(link);
}
if (meta.link && this.xmlbase && this.xmlbase.length === 0) {
this.xmlbase.unshift({ '#name': 'xml', '#': meta.link});
this.stack[0] = utils.reresolve(this.stack[0], meta.link);
}
}, this);
} else {
if (el['@']['href']) { // Atom
if (utils.get(el['@'], 'rel')) {
if (el['@']['rel'] == 'alternate') {
if (!meta.link) meta.link = el['@']['href'];
}
else if (el['@']['rel'] == 'self') {
meta.xmlurl = meta.xmlUrl = el['@']['href'];
if (this.xmlbase && this.xmlbase.length === 0) {
this.xmlbase.unshift({ '#name': 'xml', '#': meta.xmlurl});
this.stack[0] = utils.reresolve(this.stack[0], meta.xmlurl);
}
}
else if (el['@']['rel'] == 'hub' && !(meta.cloud.href || meta.cloud.domain)) {
meta.cloud.type = 'hub';
meta.cloud.href = el['@']['href'];
}
} else {
meta.link = el['@']['href'];
}
} else if (Object.keys(el['@']).length === 0) { // RSS
if (!meta.link) meta.link = utils.get(el);
}
if (meta.link && this.xmlbase && this.xmlbase.length === 0) {
this.xmlbase.unshift({ '#name': 'xml', '#': meta.link});
this.stack[0] = utils.reresolve(this.stack[0], meta.link);
}
}
break;
case('managingeditor'):
case('webmaster'):
case('author'):
var author = {};
if (name == 'author') {
meta.author = utils.get(el.name) || utils.get(el.email) || utils.get(el.uri);
}
else if (utils.get(el)) {
author = addressparser(utils.get(el))[0];
if (author) {
el['name'] = author.name;
el['email'] = author.address;
}
if (meta.author === null || name == 'managingeditor') {
meta.author = author.name || author.address || utils.get(el);
}
}
break;
case('cloud'):
// I can't believe someone actually would put two cloud elements in their channel
// but it happened
// Nevertheless, there can be only one
meta.cloud = {}; // This will ensure that rssCloud "wins" here,
// If pubsubhubbub is also declared, it's still available
// in the link elements
if (Array.isArray(el)) {
Object.keys(el[0]['@']).forEach(function (attr) {
if (utils.has(el[0]['@'], attr)) {
meta.cloud[attr] = el[0]['@'][attr];
}
});
}
else {
Object.keys(el['@']).forEach(function (attr) {
if (utils.has(el['@'], attr)) {
meta.cloud[attr] = el['@'][attr];
}
});
}
meta.cloud.type = 'rsscloud';
break;
case('language'):
meta.language = utils.get(el);
break;
case('image'):
case('logo'):
if (el.url)
meta.image.url = utils.get(el.url);
if (el.title)
meta.image.title = utils.get(el.title);
if (!meta.image.url && utils.get(el))
meta.image.url = utils.get(el);
break;
case('icon'):
meta.favicon = utils.get(el);
break;
case('copyright'):
case('rights'):
case('dc:rights'):
meta.copyright = utils.get(el);
break;
case('generator'):
meta.generator = utils.get(el);
if (utils.get(el['@'], 'version'))
meta.generator += (meta.generator ? ' ' : '') + 'v' + el['@'].version;
if (utils.get(el['@'], 'uri'))
meta.generator += meta.generator ? ' (' + el['@'].uri + ')' : el['@'].uri;
break;
case('category'):
case('dc:subject'):
case('itunes:category'):
case('media:category'):
/* We handle all the kinds of categories within the switch loop because meta.categories
* is an array, unlike the other properties, and therefore can handle multiple values
*/
var _category = ''
, _categories = []
;
if (Array.isArray(el)) {
el.forEach(function (category){
var _categoryValue;
if ('category' == name && 'atom' == type) {
if (category['@'] && (_categoryValue = utils.safeTrim(utils.get(category['@'], 'term')))) {
meta.categories.push(_categoryValue);
}
}
else if ('category' == name && 'rss' == type){
if ((_categoryValue = utils.safeTrim(utils.get(category)))) {
meta.categories.push(_categoryValue);
}
}
else if ('dc:subject' == name && (_categoryValue = utils.safeTrim(utils.get(category)))) {
_categories = _categoryValue.split(' ').map(function (cat){ return cat.trim(); });
if (_categories.length) {
meta.categories = meta.categories.concat(_categories);
}
}
else if ('itunes:category' == name) {
if (category['@'] && utils.safeTrim(utils.get(category['@'], 'text'))) _category = utils.safeTrim(utils.get(category['@'], 'text'));
if (category[name]) {
if (Array.isArray(category[name])) {
category[name].forEach(function (subcategory){
var _subcategoryValue;
if (subcategory['@'] && (_subcategoryValue = utils.safeTrim(utils.get(subcategory['@'], 'text')))) {
meta.categories.push(_category + '/' + _subcategoryValue);
}
});
}
else if (category[name]['@'] && (_categoryValue = utils.safeTrim(utils.get(category[name]['@'], 'text')))) {
meta.categories.push(_category + '/' + _categoryValue);
}
}
else if (_category) {
meta.categories.push(_category);
}
}
else if ('media:category' == name && (_categoryValue = utils.safeTrim(utils.get(category)))) {
meta.categories.push(_categoryValue);
}
});
} else {
if ('category' == name && 'atom' == type) {
if ((_category = utils.safeTrim(utils.get(el['@'], 'term')))) {
meta.categories.push(_category);
}
}
else if ('category' == name && 'rss' == type) {
if ((_category = utils.safeTrim(utils.get(el)))) {
meta.categories.push(_category);
}
}
else if ('dc:subject' == name && (_category = utils.safeTrim(utils.get(el)))) {
_categories = _category.split(' ').map(function (cat){ return cat.trim(); });
if (_categories.length) {
meta.categories = meta.categories.concat(_categories);
}
}
else if ('itunes:category' == name) {
if (el['@'] && utils.safeTrim(utils.get(el['@'], 'text'))) _category = utils.safeTrim(utils.get(el['@'], 'text'));
if (el[name]) {
if (Array.isArray(el[name])) {
el[name].forEach(function (subcategory){
var _subcategoryValue;
if (subcategory['@'] && (_subcategoryValue = utils.safeTrim(utils.get(subcategory['@'], 'text')))) {
meta.categories.push(_category + '/' + _subcategoryValue);
}
});
}
else if (el[name]['@'] && (_category = utils.safeTrim(utils.get(el[name]['@'], 'text')))) {
meta.categories.push(_category + '/' + _category);
}
}
else if (_category) {
meta.categories.push(_category);
}
}
else if ('media:category' == name && (_category = utils.safeTrim(utils.get(el)))) {
meta.categories.push(utils.get(el));
}
}
break;
} // switch end
}
// Fill with all native other namespaced properties
if (name.indexOf('#') !== 0) {
if (~name.indexOf(':')) meta[name] = el;
else meta[type + ':' + name] = el;
}
}, this); // forEach end
if (normalize) {
if (!meta.description) {
if (node['itunes:summary']) meta.description = utils.get(node['itunes:summary']);
else if (node['tagline']) meta.description = utils.get(node['tagline']);
}
if (!meta.author) {
if (node['itunes:author']) meta.author = utils.get(node['itunes:author']);
else if (node['itunes:owner'] && node['itunes:owner']['itunes:name']) meta.author = utils.get(node['itunes:owner']['itunes:name']);
else if (node['dc:creator']) meta.author = utils.get(node['dc:creator']);
else if (node['dc:publisher']) meta.author = utils.get(node['dc:publisher']);
}
if (!meta.language) {
if (node['@'] && node['@']['xml:lang']) meta.language = utils.get(node['@'], 'xml:lang');
else if (node['dc:language']) meta.language = utils.get(node['dc:language']);
}
if (!meta.image.url) {
if (node['itunes:image']) meta.image.url = utils.get(node['itunes:image']['@'], 'href');
else if (node['media:thumbnail']) {
if (Array.isArray(node['media:thumbnail'])) {
node['media:thumbnail'] = node['media:thumbnail'][0];
}
meta.image.url = utils.get(node['media:thumbnail']['@'], 'url');
}
}
if (!meta.copyright) {
if (node['media:copyright']) meta.copyright = utils.get(node['media:copyright']);
else if (node['dc:rights']) meta.copyright = utils.get(node['dc:rights']);
else if (node['creativecommons:license']) meta.copyright = utils.get(node['creativecommons:license']);
else if (node['cc:license']) {
if (Array.isArray(node['cc:license']) && node['cc:license'][0]['@'] && node['cc:license'][0]['@']['rdf:resource']) {
meta.copyright = utils.get(node['cc:license'][0]['@'], 'rdf:resource');
} else if (node['cc:license']['@'] && node['cc:license']['@']['rdf:resource']) {
meta.copyright = utils.get(node['cc:license']['@'], 'rdf:resource');
}
}
}
if (!meta.generator) {
if (node['admin:generatoragent']) {
if (Array.isArray(node['admin:generatoragent']) && node['admin:generatoragent'][0]['@'] && node['admin:generatoragent'][0]['@']['rdf:resource']) {
meta.generator = utils.get(node['admin:generatoragent'][0]['@'], 'rdf:resource');
} else if (node['admin:generatoragent']['@'] && node['admin:generatoragent']['@']['rdf:resource']) {
meta.generator = utils.get(node['admin:generatoragent']['@'], 'rdf:resource');
}
}
}
if (meta.categories.length) {
meta.categories = utils.unique(meta.categories);
}
if (!meta.link) {
if (meta['atom:id'] && utils.get(meta['atom:id']) && /^https?:/.test(utils.get(meta['atom:id']))) {
meta.link = utils.get(meta['atom:id']);
}
}
if (!meta.xmlurl && this.options.feedurl) {
meta.xmlurl = meta.xmlUrl = this.options.feedurl;
}
meta.title = meta.title && utils.stripHtml(meta.title);
meta.description = meta.description && utils.stripHtml(meta.description);
}
return meta;
};
FeedParser.prototype.handleItem = function handleItem (node, type, options){
if (!type || !node) return {};
var item = {}
, normalize = !options || (options && options.normalize)
;
if (normalize) {
['title','description','summary','date','pubdate','pubDate','link','guid','author','comments', 'origlink'].forEach(function (property){
item[property] = null;
});
item.image = {};
item.source = {};
item.categories = [];
item.enclosures = [];
}
Object.keys(node).forEach(function(name){
var el = node[name]
, attrs = utils.get(el, '@')
, enclosure;
if (normalize) {
switch(name){
case('title'):
item.title = utils.get(el);
break;
case('description'):
case('summary'):
item.summary = utils.get(el);
if (!item.description) item.description = utils.get(el);
break;
case('content'):
case('content:encoded'):
item.description = utils.get(el);
break;
case('pubdate'):
case('published'):
case('issued'):
case('modified'):
case('updated'):
case('dc:date'):
var date = utils.get(el) ? utils.get(el) : null;
if (!date) break;
if (item.pubdate === null || name == 'pubdate' || name == 'published' || name == 'issued')
item.pubdate = item.pubDate = date;
if (item.date === null || name == 'modified' || name == 'updated')
item.date = date;
break;
case('link'):
if (Array.isArray(el)) {
el.forEach(function (link){
if (link['@']['href']) { // Atom
if (utils.get(link['@'], 'rel')) {
if (link['@']['rel'] == 'canonical') item.origlink = link['@']['href'];
if (link['@']['rel'] == 'alternate' && (!link['@']['type'] || link['@']['type'] == 'text/html') && !item.link) item.link = link['@']['href'];
if (link['@']['rel'] == 'self' && (!link['@']['type'] || link['@']['type'] == 'text/html') && !item.link) item.link = link['@']['href'];
if (link['@']['rel'] == 'replies') item.comments = link['@']['href'];
if (link['@']['rel'] == 'enclosure') {
enclosure = {};
enclosure.url = link['@']['href'];
enclosure.type = utils.get(link['@'], 'type');
enclosure.length = utils.get(link['@'], 'length');
if (indexOfObject(item.enclosures, enclosure, ['url', 'type']) === -1) {
item.enclosures.push(enclosure);
}
}
} else {
item.link = link['@']['href'];
}
} else if (Object.keys(link['@']).length === 0) { // RSS
if (!item.link) item.link = utils.get(link);
}
});
} else {
if (el['@']['href']) { // Atom
if (utils.get(el['@'], 'rel')) {
if (el['@']['rel'] == 'canonical') item.origlink = el['@']['href'];
if (el['@']['rel'] == 'alternate' && (!el['@']['type'] || el['@']['type'] == 'text/html') && !item.link) item.link = el['@']['href'];
if (el['@']['rel'] == 'self' && (!el['@']['type'] || el['@']['type'] == 'text/html') && !item.link) item.link = el['@']['href'];
if (el['@']['rel'] == 'replies') item.comments = el['@']['href'];
if (el['@']['rel'] == 'enclosure') {
enclosure = {};
enclosure.url = el['@']['href'];
enclosure.type = utils.get(el['@'], 'type');
enclosure.length = utils.get(el['@'], 'length');
if (indexOfObject(item.enclosures, enclosure, ['url', 'type']) === -1) {
item.enclosures.push(enclosure);
}
}
} else {
item.link = el['@']['href'];
}
} else if (Object.keys(el['@']).length === 0) { // RSS
if (!item.link) item.link = utils.get(el);
}
}
if (!item.guid) item.guid = item.link;
break;
case('guid'):
case('id'):
item.guid = utils.get(el);
// http://cyber.law.harvard.edu/rss/rss.html#ltguidgtSubelementOfLtitemgt
// If the guid element has an attribute named "isPermaLink" with a value
// of true, the reader may assume that it is a permalink to the item,
// that is, a url that can be opened in a Web browser, that points to
// the full item described by the <item> element.
// isPermaLink is optional, its default value is true. If its value is
// false, the guid may not be assumed to be a url, or a url to anything
// in particular.
if (item.guid && type == 'rss' && name == 'guid' && !(attrs.ispermalink && attrs.ispermalink.match(/false/i))) {
item.permalink = item.guid;
}
break;
case('author'):
var author = {};
if (utils.get(el)) { // RSS
author = addressparser(utils.get(el))[0];
if (author) {
el['name'] = author.name;
el['email'] = author.address;
item.author = author.name || author.address;
}
// addressparser failed
else {
item.author = utils.get(el);
}
} else {
item.author = utils.get(el.name) || utils.get(el.email) || utils.get(el.uri);
}
break;
case('dc:creator'):
item.author = utils.get(el);
break;
case('comments'):
item.comments = utils.get(el);
break;
case('source'):
if ('rss' == type) {
item.source['title'] = utils.get(el);
item.source['url'] = utils.get(el['@'], 'url');
} else if ('atom' == type) {
if (el.title && utils.get(el.title))
item.source['title'] = utils.get(el.title);
if (el.link && utils.get(el.link['@'], 'href'))
item.source['url'] = utils.get(el.link['@'], 'href');
}
if (item.source['url'] && !this.meta.xmlurl) {
this.meta.xmlurl = this.meta.xmlUrl = item.source['url'];
if (this.xmlbase && this.xmlbase.length === 0) {
this.xmlbase.unshift({ '#name': 'xml', '#': item.source['url']});
this.stack[0] = utils.reresolve(this.stack[0], item.source['url']);
}
}
break;
case('enclosure'):
if (Array.isArray(el)) {
el.forEach(function (enc){
enclosure = {};
enclosure.url = utils.get(enc['@'], 'url');
enclosure.type = utils.get(enc['@'], 'type');
enclosure.length = utils.get(enc['@'], 'length');
if (~indexOfObject(item.enclosures, enclosure, ['url', 'type'])) {
item.enclosures.splice(indexOfObject(item.enclosures, enclosure, ['url', 'type']), 1, enclosure);
} else {
item.enclosures.push(enclosure);
}
});
} else {
enclosure = {};
enclosure.url = utils.get(el['@'], 'url');
enclosure.type = utils.get(el['@'], 'type');
enclosure.length = utils.get(el['@'], 'length');
if (~indexOfObject(item.enclosures, enclosure, ['url', 'type'])) {
item.enclosures.splice(indexOfObject(item.enclosures, enclosure, ['url', 'type']), 1, enclosure);
} else {
item.enclosures.push(enclosure);
}
}
break;
case('media:content'):
if (Array.isArray(el)) {
el.forEach(function (enc){
enclosure = {};
enclosure.url = utils.get(enc['@'], 'url');
enclosure.type = utils.get(enc['@'], 'type') || utils.get(enc['@'], 'medium');
enclosure.length = utils.get(enc['@'], 'filesize');
if (indexOfObject(item.enclosures, enclosure, ['url', 'type']) === -1) {
item.enclosures.push(enclosure);
}
});
} else {
enclosure = {};
enclosure.url = utils.get(el['@'], 'url');
enclosure.type = utils.get(el['@'], 'type') || utils.get(el['@'], 'medium');
enclosure.length = utils.get(el['@'], 'filesize');
if (indexOfObject(item.enclosures, enclosure, ['url', 'type']) === -1) {
item.enclosures.push(enclosure);
}
}
break;
case('enc:enclosure'): // Can't find this in use for an example to debug. Only example found does not comply with the spec -- can't code THAT!
break;
case('category'):
case('dc:subject'):
case('itunes:category'):
case('media:category'):
/* We handle all the kinds of categories within the switch loop because item.categories
* is an array, unlike the other properties, and therefore can handle multiple values
*/
var _category = ''
, _categories = []
;
if (Array.isArray(el)) {
el.forEach(function (category){
if ('category' == name && 'atom' == type) {
if (category['@'] && utils.get(category['@'], 'term')) item.categories.push(utils.get(category['@'], 'term'));
} else if ('category' == name && utils.get(category) && 'rss' == type) {
item.categories.push(utils.get(category).trim());
} else if ('dc:subject' == name && utils.get(category)) {
_categories = utils.get(category).split(' ').map(function (cat){ return cat.trim(); });
if (_categories.length) item.categories = item.categories.concat(_categories);
} else if ('itunes:category' == name) {
if (category['@'] && utils.get(category['@'], 'text')) _category = utils.get(category['@'], 'text');
if (category[name]) {
if (Array.isArray(category[name])) {
category[name].forEach(function (subcategory){
if (subcategory['@'] && utils.get(subcategory['@'], 'text')) item.categories.push(_category + '/' + utils.get(subcategory['@'], 'text'));
});
} else {
if (category[name]['@'] && utils.get(category[name]['@'], 'text'))
item.categories.push(_category + '/' + utils.get(category[name]['@'], 'text'));
}
} else {
item.categories.push(_category);
}
} else if ('media:category' == name) {
item.categories.push(utils.get(category));
}
});
} else {
if ('category' == name && 'atom' == type) {
if (utils.get(el['@'], 'term')) item.categories.push(utils.get(el['@'], 'term'));
} else if ('category' == name && utils.get(el) && 'rss' == type) {
item.categories.push(utils.get(el).trim());
} else if ('dc:subject' == name && utils.get(el)) {
_categories = utils.get(el).split(' ').map(function (cat){ return cat.trim(); });
if (_categories.length) item.categories = item.categories.concat(_categories);
} else if ('itunes:category' == name) {
if (el['@'] && utils.get(el['@'], 'text')) _category = utils.get(el['@'], 'text');
if (el[name]) {
if (Array.isArray(el[name])) {
el[name].forEach(function (subcategory){
if (subcategory['@'] && utils.get(subcategory['@'], 'text')) item.categories.push(_category + '/' + utils.get(subcategory['@'], 'text'));
});
} else {
if (el[name]['@'] && utils.get(el[name]['@'], 'text'))
item.categories.push(_category + '/' + utils.get(el[name]['@'], 'text'));
}
} else {
item.categories.push(_category);
}
} else if ('media:category' == name) {
item.categories.push(utils.get(el));
}
}