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/*!
Parser rels
All the functions that deal with microformats v2 rel structures
Copyright (C) 2010 - 2015 Glenn Jones. All Rights Reserved.
MIT License: https://raw.github.com/glennjones/microformat-shiv/master/license.txt
Dependencies dates.js, domutils.js, html.js, isodate,js, text.js, utilities.js, url.js
*/
var Modules = (function (modules) {
// check parser module is loaded
if(modules.Parser){
/**
* finds rel=* structures
*
* @param {DOM node} rootNode
* @return {Object}
*/
modules.Parser.prototype.findRels = function(rootNode) {
var out = {
'items': [],
'rels': {},
'rel-urls': {}
},
x,
i,
y,
z,
relList,
items,
item,
value,
arr;
arr = modules.domUtils.getNodesByAttribute(rootNode, 'rel');
x = 0;
i = arr.length;
while(x < i) {
relList = modules.domUtils.getAttribute(arr[x], 'rel');
if(relList) {
items = relList.split(' ');
// add rels
z = 0;
y = items.length;
while(z < y) {
item = modules.utils.trim(items[z]);
// get rel value
value = modules.domUtils.getAttrValFromTagList(arr[x], ['a', 'area'], 'href');
if(!value) {
value = modules.domUtils.getAttrValFromTagList(arr[x], ['link'], 'href');
}
// create the key
if(!out.rels[item]) {
out.rels[item] = [];
}
if(typeof this.options.baseUrl === 'string' && typeof value === 'string') {
var resolved = modules.url.resolve(value, this.options.baseUrl);
// do not add duplicate rels - based on resolved URLs
if(out.rels[item].indexOf(resolved) === -1){
out.rels[item].push( resolved );
}
}
z++;
}
var url = null;
if(modules.domUtils.hasAttribute(arr[x], 'href')){
url = modules.domUtils.getAttribute(arr[x], 'href');
if(url){
url = modules.url.resolve(url, this.options.baseUrl );
}
}
// add to rel-urls
var relUrl = this.getRelProperties(arr[x]);
relUrl.rels = items;
// // do not add duplicate rel-urls - based on resolved URLs
if(url && out['rel-urls'][url] === undefined){
out['rel-urls'][url] = relUrl;
}
}
x++;
}
return out;
};
/**
* gets the properties of a rel=*
*
* @param {DOM node} node
* @return {Object}
*/
modules.Parser.prototype.getRelProperties = function(node){
var obj = {};
if(modules.domUtils.hasAttribute(node, 'media')){
obj.media = modules.domUtils.getAttribute(node, 'media');
}
if(modules.domUtils.hasAttribute(node, 'type')){
obj.type = modules.domUtils.getAttribute(node, 'type');
}
if(modules.domUtils.hasAttribute(node, 'hreflang')){
obj.hreflang = modules.domUtils.getAttribute(node, 'hreflang');
}
if(modules.domUtils.hasAttribute(node, 'title')){
obj.title = modules.domUtils.getAttribute(node, 'title');
}
if(modules.utils.trim(this.getPValue(node, false)) !== ''){
obj.text = this.getPValue(node, false);
}
return obj;
};
/**
* finds any alt rel=* mappings for a given node/microformat
*
* @param {DOM node} node
* @param {String} ufName
* @return {String || undefined}
*/
modules.Parser.prototype.findRelImpied = function(node, ufName) {
var out,
map,
i;
map = this.getMapping(ufName);
if(map) {
for(var key in map.properties) {
if (map.properties.hasOwnProperty(key)) {
var prop = map.properties[key],
propName = (prop.map) ? prop.map : 'p-' + key,
relCount = 0;
// is property an alt rel=* mapping
if(prop.relAlt && modules.domUtils.hasAttribute(node, 'rel')) {
i = prop.relAlt.length;
while(i--) {
if(modules.domUtils.hasAttributeValue(node, 'rel', prop.relAlt[i])) {
relCount++;
}
}
if(relCount === prop.relAlt.length) {
out = propName;
}
}
}
}
}
return out;
};
/**
* returns whether a node or its children has rel=* microformat
*
* @param {DOM node} node
* @return {Boolean}
*/
modules.Parser.prototype.hasRel = function(node) {
return (this.countRels(node) > 0);
};
/**
* returns the number of rel=* microformats
*
* @param {DOM node} node
* @return {Int}
*/
modules.Parser.prototype.countRels = function(node) {
if(node){
return modules.domUtils.getNodesByAttribute(node, 'rel').length;
}
return 0;
};
}
return modules;
} (Modules || {}));
|
