94 lines
1.8 KiB
JavaScript
94 lines
1.8 KiB
JavaScript
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/*
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Module Dependencies
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*/
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var htmlparser = require('htmlparser2'),
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utils = require('./utils');
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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 dom;
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if (typeof content === 'string' || Buffer.isBuffer(content)) {
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dom = htmlparser.parseDOM(content, options);
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} else {
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dom = content;
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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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*/
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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 parent
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if (parent) {
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parent.children = arr;
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} else {
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parent = null;
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}
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// Update neighbors
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for (var i = 0; i < arr.length; i++) {
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var node = arr[i];
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// Cleanly remove existing nodes from their previous structures.
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var oldParent = node.parent || node.root,
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oldSiblings = oldParent && oldParent.children;
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if (oldSiblings && oldSiblings !== arr) {
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oldSiblings.splice(oldSiblings.indexOf(node), 1);
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if (node.prev) {
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node.prev.next = node.next;
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}
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if (node.next) {
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node.next.prev = node.prev;
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}
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}
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if (parent) {
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node.prev = arr[i - 1] || null;
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node.next = arr[i + 1] || null;
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} else {
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node.prev = node.next = null;
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}
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if (parent && parent.type === 'root') {
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node.root = parent;
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node.parent = null;
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} else {
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node.root = null;
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node.parent = parent;
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}
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}
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return parent;
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};
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// module.exports = $.extend(exports);
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