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author | Minteck <contact@minteck.org> | 2022-02-09 17:58:07 +0100 |
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committer | Minteck <contact@minteck.org> | 2022-02-09 17:58:07 +0100 |
commit | 22a25ded9f7d9c9a96cce8d1bc12475ca0434201 (patch) | |
tree | 0e33d0650fe58f41c00bbc4b8047956905766823 /node_modules/domutils/lib/querying.js | |
parent | 8f54d903fb3470823a5e4d6ff4655de009836245 (diff) | |
download | youtoo-22a25ded9f7d9c9a96cce8d1bc12475ca0434201.tar.gz youtoo-22a25ded9f7d9c9a96cce8d1bc12475ca0434201.tar.bz2 youtoo-22a25ded9f7d9c9a96cce8d1bc12475ca0434201.zip |
Major update
Diffstat (limited to 'node_modules/domutils/lib/querying.js')
-rw-r--r-- | node_modules/domutils/lib/querying.js | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/node_modules/domutils/lib/querying.js b/node_modules/domutils/lib/querying.js new file mode 100644 index 0000000..1eb20e9 --- /dev/null +++ b/node_modules/domutils/lib/querying.js @@ -0,0 +1,126 @@ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +exports.findAll = exports.existsOne = exports.findOne = exports.findOneChild = exports.find = exports.filter = void 0; +var domhandler_1 = require("domhandler"); +/** + * Search a node and its children for nodes passing a test function. + * + * @param test Function to test nodes on. + * @param node Node to search. Will be included in the result set if it matches. + * @param recurse Also consider child nodes. + * @param limit Maximum number of nodes to return. + * @returns All nodes passing `test`. + */ +function filter(test, node, recurse, limit) { + if (recurse === void 0) { recurse = true; } + if (limit === void 0) { limit = Infinity; } + if (!Array.isArray(node)) + node = [node]; + return find(test, node, recurse, limit); +} +exports.filter = filter; +/** + * Search an array of node and its children for nodes passing a test function. + * + * @param test Function to test nodes on. + * @param nodes Array of nodes to search. + * @param recurse Also consider child nodes. + * @param limit Maximum number of nodes to return. + * @returns All nodes passing `test`. + */ +function find(test, nodes, recurse, limit) { + var result = []; + for (var _i = 0, nodes_1 = nodes; _i < nodes_1.length; _i++) { + var elem = nodes_1[_i]; + if (test(elem)) { + result.push(elem); + if (--limit <= 0) + break; + } + if (recurse && (0, domhandler_1.hasChildren)(elem) && elem.children.length > 0) { + var children = find(test, elem.children, recurse, limit); + result.push.apply(result, children); + limit -= children.length; + if (limit <= 0) + break; + } + } + return result; +} +exports.find = find; +/** + * Finds the first element inside of an array that matches a test function. + * + * @param test Function to test nodes on. + * @param nodes Array of nodes to search. + * @returns The first node in the array that passes `test`. + */ +function findOneChild(test, nodes) { + return nodes.find(test); +} +exports.findOneChild = findOneChild; +/** + * Finds one element in a tree that passes a test. + * + * @param test Function to test nodes on. + * @param nodes Array of nodes to search. + * @param recurse Also consider child nodes. + * @returns The first child node that passes `test`. + */ +function findOne(test, nodes, recurse) { + if (recurse === void 0) { recurse = true; } + var elem = null; + for (var i = 0; i < nodes.length && !elem; i++) { + var checked = nodes[i]; + if (!(0, domhandler_1.isTag)(checked)) { + continue; + } + else if (test(checked)) { + elem = checked; + } + else if (recurse && checked.children.length > 0) { + elem = findOne(test, checked.children); + } + } + return elem; +} +exports.findOne = findOne; +/** + * @param test Function to test nodes on. + * @param nodes Array of nodes to search. + * @returns Whether a tree of nodes contains at least one node passing a test. + */ +function existsOne(test, nodes) { + return nodes.some(function (checked) { + return (0, domhandler_1.isTag)(checked) && + (test(checked) || + (checked.children.length > 0 && + existsOne(test, checked.children))); + }); +} +exports.existsOne = existsOne; +/** + * Search and array of nodes and its children for nodes passing a test function. + * + * Same as `find`, only with less options, leading to reduced complexity. + * + * @param test Function to test nodes on. + * @param nodes Array of nodes to search. + * @returns All nodes passing `test`. + */ +function findAll(test, nodes) { + var _a; + var result = []; + var stack = nodes.filter(domhandler_1.isTag); + var elem; + while ((elem = stack.shift())) { + var children = (_a = elem.children) === null || _a === void 0 ? void 0 : _a.filter(domhandler_1.isTag); + if (children && children.length > 0) { + stack.unshift.apply(stack, children); + } + if (test(elem)) + result.push(elem); + } + return result; +} +exports.findAll = findAll; |