[6a3a178] | 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.getElementsByTagType = exports.getElementsByTagName = exports.getElementById = exports.getElements = exports.testElement = void 0;
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| 4 | var domhandler_1 = require("domhandler");
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| 5 | var querying_1 = require("./querying");
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| 6 | var Checks = {
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| 7 | tag_name: function (name) {
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| 8 | if (typeof name === "function") {
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| 9 | return function (elem) { return (0, domhandler_1.isTag)(elem) && name(elem.name); };
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| 10 | }
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| 11 | else if (name === "*") {
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| 12 | return domhandler_1.isTag;
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| 13 | }
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| 14 | return function (elem) { return (0, domhandler_1.isTag)(elem) && elem.name === name; };
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| 15 | },
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| 16 | tag_type: function (type) {
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| 17 | if (typeof type === "function") {
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| 18 | return function (elem) { return type(elem.type); };
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| 19 | }
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| 20 | return function (elem) { return elem.type === type; };
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| 21 | },
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| 22 | tag_contains: function (data) {
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| 23 | if (typeof data === "function") {
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| 24 | return function (elem) { return (0, domhandler_1.isText)(elem) && data(elem.data); };
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| 25 | }
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| 26 | return function (elem) { return (0, domhandler_1.isText)(elem) && elem.data === data; };
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| 27 | },
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| 28 | };
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| 29 | /**
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| 30 | * @param attrib Attribute to check.
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| 31 | * @param value Attribute value to look for.
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| 32 | * @returns A function to check whether the a node has an attribute with a particular value.
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| 33 | */
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| 34 | function getAttribCheck(attrib, value) {
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| 35 | if (typeof value === "function") {
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| 36 | return function (elem) { return (0, domhandler_1.isTag)(elem) && value(elem.attribs[attrib]); };
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| 37 | }
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| 38 | return function (elem) { return (0, domhandler_1.isTag)(elem) && elem.attribs[attrib] === value; };
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| 39 | }
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| 40 | /**
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| 41 | * @param a First function to combine.
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| 42 | * @param b Second function to combine.
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| 43 | * @returns A function taking a node and returning `true` if either
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| 44 | * of the input functions returns `true` for the node.
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| 45 | */
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| 46 | function combineFuncs(a, b) {
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| 47 | return function (elem) { return a(elem) || b(elem); };
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| 48 | }
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| 49 | /**
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| 50 | * @param options An object describing nodes to look for.
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| 51 | * @returns A function executing all checks in `options` and returning `true`
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| 52 | * if any of them match a node.
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| 53 | */
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| 54 | function compileTest(options) {
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| 55 | var funcs = Object.keys(options).map(function (key) {
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| 56 | var value = options[key];
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| 57 | return Object.prototype.hasOwnProperty.call(Checks, key)
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| 58 | ? Checks[key](value)
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| 59 | : getAttribCheck(key, value);
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| 60 | });
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| 61 | return funcs.length === 0 ? null : funcs.reduce(combineFuncs);
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| 62 | }
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| 63 | /**
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| 64 | * @param options An object describing nodes to look for.
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| 65 | * @param node The element to test.
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| 66 | * @returns Whether the element matches the description in `options`.
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| 67 | */
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| 68 | function testElement(options, node) {
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| 69 | var test = compileTest(options);
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| 70 | return test ? test(node) : true;
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| 71 | }
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| 72 | exports.testElement = testElement;
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| 73 | /**
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| 74 | * @param options An object describing nodes to look for.
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| 75 | * @param nodes Nodes to search through.
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| 76 | * @param recurse Also consider child nodes.
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| 77 | * @param limit Maximum number of nodes to return.
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| 78 | * @returns All nodes that match `options`.
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| 79 | */
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| 80 | function getElements(options, nodes, recurse, limit) {
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| 81 | if (limit === void 0) { limit = Infinity; }
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| 82 | var test = compileTest(options);
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| 83 | return test ? (0, querying_1.filter)(test, nodes, recurse, limit) : [];
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| 84 | }
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| 85 | exports.getElements = getElements;
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| 86 | /**
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| 87 | * @param id The unique ID attribute value to look for.
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| 88 | * @param nodes Nodes to search through.
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| 89 | * @param recurse Also consider child nodes.
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| 90 | * @returns The node with the supplied ID.
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| 91 | */
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| 92 | function getElementById(id, nodes, recurse) {
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| 93 | if (recurse === void 0) { recurse = true; }
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| 94 | if (!Array.isArray(nodes))
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| 95 | nodes = [nodes];
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| 96 | return (0, querying_1.findOne)(getAttribCheck("id", id), nodes, recurse);
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| 97 | }
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| 98 | exports.getElementById = getElementById;
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| 99 | /**
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| 100 | * @param tagName Tag name to search for.
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| 101 | * @param nodes Nodes to search through.
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| 102 | * @param recurse Also consider child nodes.
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| 103 | * @param limit Maximum number of nodes to return.
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| 104 | * @returns All nodes with the supplied `tagName`.
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| 105 | */
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| 106 | function getElementsByTagName(tagName, nodes, recurse, limit) {
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| 107 | if (recurse === void 0) { recurse = true; }
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| 108 | if (limit === void 0) { limit = Infinity; }
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| 109 | return (0, querying_1.filter)(Checks.tag_name(tagName), nodes, recurse, limit);
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| 110 | }
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| 111 | exports.getElementsByTagName = getElementsByTagName;
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| 112 | /**
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| 113 | * @param type Element type to look for.
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| 114 | * @param nodes Nodes to search through.
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| 115 | * @param recurse Also consider child nodes.
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| 116 | * @param limit Maximum number of nodes to return.
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| 117 | * @returns All nodes with the supplied `type`.
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| 118 | */
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| 119 | function getElementsByTagType(type, nodes, recurse, limit) {
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| 120 | if (recurse === void 0) { recurse = true; }
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| 121 | if (limit === void 0) { limit = Infinity; }
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| 122 | return (0, querying_1.filter)(Checks.tag_type(type), nodes, recurse, limit);
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| 123 | }
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| 124 | exports.getElementsByTagType = getElementsByTagType;
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