1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
import { isTag, isText } from "domhandler";
import { filter, findOne } from "./querying.js";
const Checks = {
tag_name(name) {
if (typeof name === "function") {
return (elem) => isTag(elem) && name(elem.name);
}
else if (name === "*") {
return isTag;
}
return (elem) => isTag(elem) && elem.name === name;
},
tag_type(type) {
if (typeof type === "function") {
return (elem) => type(elem.type);
}
return (elem) => elem.type === type;
},
tag_contains(data) {
if (typeof data === "function") {
return (elem) => isText(elem) && data(elem.data);
}
return (elem) => 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 (elem) => isTag(elem) && value(elem.attribs[attrib]);
}
return (elem) => 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 (elem) => 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) {
const funcs = Object.keys(options).map((key) => {
const value = options[key];
return Object.prototype.hasOwnProperty.call(Checks, key)
? Checks[key](value)
: getAttribCheck(key, value);
});
return funcs.length === 0 ? null : funcs.reduce(combineFuncs);
}
/**
* @category Legacy Query Functions
* @param options An object describing nodes to look for.
* @param node The element to test.
* @returns Whether the element matches the description in `options`.
*/
export function testElement(options, node) {
const test = compileTest(options);
return test ? test(node) : true;
}
/**
* @category Legacy Query Functions
* @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`.
*/
export function getElements(options, nodes, recurse, limit = Infinity) {
const test = compileTest(options);
return test ? filter(test, nodes, recurse, limit) : [];
}
/**
* @category Legacy Query Functions
* @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.
*/
export function getElementById(id, nodes, recurse = true) {
if (!Array.isArray(nodes))
nodes = [nodes];
return findOne(getAttribCheck("id", id), nodes, recurse);
}
/**
* @category Legacy Query Functions
* @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`.
*/
export function getElementsByTagName(tagName, nodes, recurse = true, limit = Infinity) {
return filter(Checks["tag_name"](tagName), nodes, recurse, limit);
}
/**
* @category Legacy Query Functions
* @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`.
*/
export function getElementsByTagType(type, nodes, recurse = true, limit = Infinity) {
return filter(Checks["tag_type"](type), nodes, recurse, limit);
}
//# sourceMappingURL=legacy.js.map
|
