123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124 |
- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.getElementsByTagType = exports.getElementsByTagName = exports.getElementById = exports.getElements = exports.testElement = void 0;
- var domhandler_1 = require("domhandler");
- var querying_1 = require("./querying");
- var Checks = {
- tag_name: function (name) {
- if (typeof name === "function") {
- return function (elem) { return (0, domhandler_1.isTag)(elem) && name(elem.name); };
- }
- else if (name === "*") {
- return domhandler_1.isTag;
- }
- return function (elem) { return (0, domhandler_1.isTag)(elem) && elem.name === name; };
- },
- tag_type: function (type) {
- if (typeof type === "function") {
- return function (elem) { return type(elem.type); };
- }
- return function (elem) { return elem.type === type; };
- },
- tag_contains: function (data) {
- if (typeof data === "function") {
- return function (elem) { return (0, domhandler_1.isText)(elem) && data(elem.data); };
- }
- return function (elem) { return (0, domhandler_1.isText)(elem) && elem.data === data; };
- },
- };
- /**
- * @param attrib Attribute to check.
- * @param value Attribute value to look for.
- * @returns A function to check whether the a node has an attribute with a particular value.
- */
- function getAttribCheck(attrib, value) {
- if (typeof value === "function") {
- return function (elem) { return (0, domhandler_1.isTag)(elem) && value(elem.attribs[attrib]); };
- }
- return function (elem) { return (0, domhandler_1.isTag)(elem) && elem.attribs[attrib] === value; };
- }
- /**
- * @param a First function to combine.
- * @param b Second function to combine.
- * @returns A function taking a node and returning `true` if either
- * of the input functions returns `true` for the node.
- */
- function combineFuncs(a, b) {
- return function (elem) { return a(elem) || b(elem); };
- }
- /**
- * @param options An object describing nodes to look for.
- * @returns A function executing all checks in `options` and returning `true`
- * if any of them match a node.
- */
- function compileTest(options) {
- var funcs = Object.keys(options).map(function (key) {
- var value = options[key];
- return Object.prototype.hasOwnProperty.call(Checks, key)
- ? Checks[key](value)
- : getAttribCheck(key, value);
- });
- return funcs.length === 0 ? null : funcs.reduce(combineFuncs);
- }
- /**
- * @param options An object describing nodes to look for.
- * @param node The element to test.
- * @returns Whether the element matches the description in `options`.
- */
- function testElement(options, node) {
- var test = compileTest(options);
- return test ? test(node) : true;
- }
- exports.testElement = testElement;
- /**
- * @param options An object describing nodes to look for.
- * @param nodes Nodes to search through.
- * @param recurse Also consider child nodes.
- * @param limit Maximum number of nodes to return.
- * @returns All nodes that match `options`.
- */
- function getElements(options, nodes, recurse, limit) {
- if (limit === void 0) { limit = Infinity; }
- var test = compileTest(options);
- return test ? (0, querying_1.filter)(test, nodes, recurse, limit) : [];
- }
- exports.getElements = getElements;
- /**
- * @param id The unique ID attribute value to look for.
- * @param nodes Nodes to search through.
- * @param recurse Also consider child nodes.
- * @returns The node with the supplied ID.
- */
- function getElementById(id, nodes, recurse) {
- if (recurse === void 0) { recurse = true; }
- if (!Array.isArray(nodes))
- nodes = [nodes];
- return (0, querying_1.findOne)(getAttribCheck("id", id), nodes, recurse);
- }
- exports.getElementById = getElementById;
- /**
- * @param tagName Tag name to search for.
- * @param nodes Nodes to search through.
- * @param recurse Also consider child nodes.
- * @param limit Maximum number of nodes to return.
- * @returns All nodes with the supplied `tagName`.
- */
- function getElementsByTagName(tagName, nodes, recurse, limit) {
- if (recurse === void 0) { recurse = true; }
- if (limit === void 0) { limit = Infinity; }
- return (0, querying_1.filter)(Checks.tag_name(tagName), nodes, recurse, limit);
- }
- exports.getElementsByTagName = getElementsByTagName;
- /**
- * @param type Element type to look for.
- * @param nodes Nodes to search through.
- * @param recurse Also consider child nodes.
- * @param limit Maximum number of nodes to return.
- * @returns All nodes with the supplied `type`.
- */
- function getElementsByTagType(type, nodes, recurse, limit) {
- if (recurse === void 0) { recurse = true; }
- if (limit === void 0) { limit = Infinity; }
- return (0, querying_1.filter)(Checks.tag_type(type), nodes, recurse, limit);
- }
- exports.getElementsByTagType = getElementsByTagType;
|