98 lines
1.9 KiB
JavaScript
98 lines
1.9 KiB
JavaScript
/*
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Module Dependencies
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*/
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var htmlparser = require('htmlparser2'),
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_ = require('underscore'),
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isTag = require('./utils').isTag;
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/*
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Parser
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*/
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exports = module.exports = function(content, options) {
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var dom = evaluate(content, options);
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// Generic root element
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var root = {
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type: 'root',
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name: 'root',
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parent: null,
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prev: null,
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next: null,
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children: []
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};
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// Update the dom using the root
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update(dom, root);
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return root;
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};
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var evaluate = exports.evaluate = function(content, options) {
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// options = options || $.fn.options;
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var handler = new htmlparser.DomHandler(options),
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parser = new htmlparser.Parser(handler, options);
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parser.write(content);
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parser.done();
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return connect(handler.dom);
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};
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var connect = exports.connect = function(dom, parent) {
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parent = parent || null;
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var prevElem = null;
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_.each(dom, function(elem) {
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// If tag and no attributes, add empty object
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if (isTag(elem.type) && elem.attribs === undefined)
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elem.attribs = {};
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// Set parent
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elem.parent = parent;
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// Previous Sibling
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elem.prev = prevElem;
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// Next sibling
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elem.next = null;
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if (prevElem) prevElem.next = elem;
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// Run through the children
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if (elem.children)
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connect(elem.children, elem);
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else if (isTag(elem.type))
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elem.children = [];
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// Get ready for next element
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prevElem = elem;
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});
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return dom;
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};
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/*
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Update the dom structure, for one changed layer
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* Much faster than reconnecting
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*/
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var update = exports.update = function(arr, parent) {
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// normalize
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if (!Array.isArray(arr)) arr = [arr];
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// Update neighbors
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for (var i = 0; i < arr.length; i++) {
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arr[i].prev = arr[i - 1] || null;
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arr[i].next = arr[i + 1] || null;
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arr[i].parent = parent || null;
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}
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// Update parent
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parent.children = arr;
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return parent;
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};
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// module.exports = $.extend(exports);
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