106 lines
2.9 KiB
JavaScript
106 lines
2.9 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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var type_1 = __importDefault(require("./nodes/type"));
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function isTag(node) {
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return node && node.nodeType === type_1.default.ELEMENT_NODE;
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}
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function getAttributeValue(elem, name) {
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return isTag(elem) ? elem.getAttribute(name) : undefined;
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}
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function getName(elem) {
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return ((elem && elem.rawTagName) || '').toLowerCase();
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}
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function getChildren(node) {
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return node && node.childNodes;
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}
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function getParent(node) {
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return node ? node.parentNode : null;
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}
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function getText(node) {
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return node.text;
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}
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function removeSubsets(nodes) {
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var idx = nodes.length;
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var node;
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var ancestor;
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var replace;
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// Check if each node (or one of its ancestors) is already contained in the
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// array.
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while (--idx > -1) {
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node = ancestor = nodes[idx];
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// Temporarily remove the node under consideration
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nodes[idx] = null;
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replace = true;
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while (ancestor) {
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if (nodes.indexOf(ancestor) > -1) {
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replace = false;
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nodes.splice(idx, 1);
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break;
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}
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ancestor = getParent(ancestor);
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}
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// If the node has been found to be unique, re-insert it.
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if (replace) {
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nodes[idx] = node;
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}
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}
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return nodes;
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}
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function existsOne(test, elems) {
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return elems.some(function (elem) {
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return isTag(elem) ? test(elem) || existsOne(test, getChildren(elem)) : false;
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});
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}
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function getSiblings(node) {
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var parent = getParent(node);
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return parent && getChildren(parent);
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}
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function hasAttrib(elem, name) {
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return getAttributeValue(elem, name) !== undefined;
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}
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function findOne(test, elems) {
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var elem = null;
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for (var i = 0, l = elems.length; i < l && !elem; i++) {
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var el = elems[i];
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if (test(el)) {
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elem = el;
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}
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else {
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var childs = getChildren(el);
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if (childs && childs.length > 0) {
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elem = findOne(test, childs);
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}
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}
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}
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return elem;
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}
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function findAll(test, nodes) {
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var result = [];
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for (var i = 0, j = nodes.length; i < j; i++) {
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if (!isTag(nodes[i]))
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continue;
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if (test(nodes[i]))
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result.push(nodes[i]);
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var childs = getChildren(nodes[i]);
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if (childs)
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result = result.concat(findAll(test, childs));
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}
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return result;
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}
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exports.default = {
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isTag: isTag,
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getAttributeValue: getAttributeValue,
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getName: getName,
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getChildren: getChildren,
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getParent: getParent,
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getText: getText,
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removeSubsets: removeSubsets,
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existsOne: existsOne,
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getSiblings: getSiblings,
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hasAttrib: hasAttrib,
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findOne: findOne,
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findAll: findAll
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};
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