mirror of https://github.com/jkjoy/sunpeiwen.git
111 lines
2.3 KiB
JavaScript
111 lines
2.3 KiB
JavaScript
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(function () {
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if (typeof Prism === 'undefined') {
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return;
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}
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/**
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* @callback ClassMapper
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* @param {string} className
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* @param {string} language
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* @returns {string}
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*
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* @callback ClassAdder
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* @param {ClassAdderEnvironment} env
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* @returns {undefined | string | string[]}
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*
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* @typedef ClassAdderEnvironment
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* @property {string} language
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* @property {string} type
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* @property {string} content
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*/
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// options
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/** @type {ClassAdder | undefined} */
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var adder;
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/** @type {ClassMapper | undefined} */
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var mapper;
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/** @type {string} */
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var prefixString = '';
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/**
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* @param {string} className
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* @param {string} language
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*/
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function apply(className, language) {
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return prefixString + (mapper ? mapper(className, language) : className);
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}
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Prism.plugins.customClass = {
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/**
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* Sets the function which can be used to add custom aliases to any token.
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*
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* @param {ClassAdder} classAdder
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*/
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add: function (classAdder) {
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adder = classAdder;
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},
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/**
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* Maps all class names using the given object or map function.
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*
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* This does not affect the prefix.
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*
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* @param {Object<string, string> | ClassMapper} classMapper
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*/
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map: function map(classMapper) {
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if (typeof classMapper === 'function') {
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mapper = classMapper;
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} else {
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mapper = function (className) {
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return classMapper[className] || className;
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};
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}
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},
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/**
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* Adds the given prefix to all class names.
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*
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* @param {string} string
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*/
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prefix: function prefix(string) {
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prefixString = string || '';
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},
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/**
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* Applies the current mapping and prefix to the given class name.
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*
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* @param {string} className A single class name.
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* @param {string} language The language of the code that contains this class name.
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*
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* If the language is unknown, pass `"none"`.
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*/
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apply: apply
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};
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Prism.hooks.add('wrap', function (env) {
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if (adder) {
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var result = adder({
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content: env.content,
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type: env.type,
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language: env.language
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});
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if (Array.isArray(result)) {
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env.classes.push.apply(env.classes, result);
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} else if (result) {
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env.classes.push(result);
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}
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}
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if (!mapper && !prefixString) {
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return;
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}
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env.classes = env.classes.map(function (c) {
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return apply(c, env.language);
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});
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});
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}());
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