209 lines
6.2 KiB
JavaScript
209 lines
6.2 KiB
JavaScript
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(function () {
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if (typeof self === 'undefined' || !self.Prism || !self.document || !document.createElement) {
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return;
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}
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// The dependencies map is built automatically with gulp
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var lang_dependencies = /*languages_placeholder[*/{"javascript":"clike","actionscript":"javascript","arduino":"cpp","aspnet":["markup","csharp"],"bison":"c","c":"clike","csharp":"clike","cpp":"c","coffeescript":"javascript","crystal":"ruby","css-extras":"css","d":"clike","dart":"clike","django":"markup","erb":["ruby","markup-templating"],"fsharp":"clike","flow":"javascript","glsl":"clike","gml":"clike","go":"clike","groovy":"clike","haml":"ruby","handlebars":"markup-templating","haxe":"clike","java":"clike","jolie":"clike","kotlin":"clike","less":"css","markdown":"markup","markup-templating":"markup","n4js":"javascript","nginx":"clike","objectivec":"c","opencl":"cpp","parser":"markup","php":["clike","markup-templating"],"php-extras":"php","plsql":"sql","processing":"clike","protobuf":"clike","pug":"javascript","qore":"clike","jsx":["markup","javascript"],"tsx":["jsx","typescript"],"reason":"clike","ruby":"clike","sass":"css","scss":"css","scala":"java","smarty":"markup-templating","soy":"markup-templating","swift":"clike","tap":"yaml","textile":"markup","tt2":["clike","markup-templating"],"twig":"markup","typescript":"javascript","vala":"clike","vbnet":"basic","velocity":"markup","wiki":"markup","xeora":"markup","xquery":"markup"}/*]*/;
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var lang_data = {};
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var ignored_language = 'none';
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var script = document.getElementsByTagName('script');
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script = script[script.length - 1];
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var languages_path = 'components/';
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if(script.hasAttribute('data-autoloader-path')) {
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var path = script.getAttribute('data-autoloader-path').trim();
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if(path.length > 0 && !/^[a-z]+:\/\//i.test(script.src)) {
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languages_path = path.replace(/\/?$/, '/');
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}
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} else if (/[\w-]+\.js$/.test(script.src)) {
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languages_path = script.src.replace(/[\w-]+\.js$/, 'components/');
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}
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var config = Prism.plugins.autoloader = {
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languages_path: languages_path,
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use_minified: true
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};
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/**
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* Lazy loads an external script
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* @param {string} src
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* @param {function=} success
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* @param {function=} error
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*/
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var addScript = function (src, success, error) {
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var s = document.createElement('script');
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s.src = src;
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s.async = true;
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s.onload = function() {
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document.body.removeChild(s);
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success && success();
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};
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s.onerror = function() {
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document.body.removeChild(s);
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error && error();
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};
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document.body.appendChild(s);
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};
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/**
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* Returns the path to a grammar, using the language_path and use_minified config keys.
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* @param {string} lang
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* @returns {string}
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*/
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var getLanguagePath = function (lang) {
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return config.languages_path +
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'prism-' + lang
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+ (config.use_minified ? '.min' : '') + '.js'
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};
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/**
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* Tries to load a grammar and
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* highlight again the given element once loaded.
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* @param {string} lang
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* @param {HTMLElement} elt
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*/
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var registerElement = function (lang, elt) {
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var data = lang_data[lang];
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if (!data) {
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data = lang_data[lang] = {};
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}
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// Look for additional dependencies defined on the <code> or <pre> tags
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var deps = elt.getAttribute('data-dependencies');
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if (!deps && elt.parentNode && elt.parentNode.tagName.toLowerCase() === 'pre') {
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deps = elt.parentNode.getAttribute('data-dependencies');
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}
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if (deps) {
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deps = deps.split(/\s*,\s*/g);
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} else {
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deps = [];
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}
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loadLanguages(deps, function () {
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loadLanguage(lang, function () {
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Prism.highlightElement(elt);
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});
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});
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};
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/**
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* Sequentially loads an array of grammars.
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* @param {string[]|string} langs
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* @param {function=} success
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* @param {function=} error
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*/
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var loadLanguages = function (langs, success, error) {
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if (typeof langs === 'string') {
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langs = [langs];
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}
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var i = 0;
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var l = langs.length;
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var f = function () {
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if (i < l) {
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loadLanguage(langs[i], function () {
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i++;
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f();
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}, function () {
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error && error(langs[i]);
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});
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} else if (i === l) {
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success && success(langs);
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}
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};
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f();
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};
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/**
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* Load a grammar with its dependencies
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* @param {string} lang
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* @param {function=} success
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* @param {function=} error
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*/
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var loadLanguage = function (lang, success, error) {
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var load = function () {
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var force = false;
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// Do we want to force reload the grammar?
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if (lang.indexOf('!') >= 0) {
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force = true;
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lang = lang.replace('!', '');
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}
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var data = lang_data[lang];
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if (!data) {
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data = lang_data[lang] = {};
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}
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if (success) {
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if (!data.success_callbacks) {
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data.success_callbacks = [];
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}
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data.success_callbacks.push(success);
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}
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if (error) {
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if (!data.error_callbacks) {
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data.error_callbacks = [];
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}
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data.error_callbacks.push(error);
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}
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if (!force && Prism.languages[lang]) {
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languageSuccess(lang);
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} else if (!force && data.error) {
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languageError(lang);
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} else if (force || !data.loading) {
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data.loading = true;
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var src = getLanguagePath(lang);
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addScript(src, function () {
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data.loading = false;
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languageSuccess(lang);
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}, function () {
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data.loading = false;
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data.error = true;
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languageError(lang);
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});
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}
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};
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var dependencies = lang_dependencies[lang];
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if(dependencies && dependencies.length) {
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loadLanguages(dependencies, load);
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} else {
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load();
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}
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};
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/**
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* Runs all success callbacks for this language.
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* @param {string} lang
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*/
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var languageSuccess = function (lang) {
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if (lang_data[lang] && lang_data[lang].success_callbacks && lang_data[lang].success_callbacks.length) {
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lang_data[lang].success_callbacks.forEach(function (f) {
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f(lang);
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});
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}
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};
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/**
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* Runs all error callbacks for this language.
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* @param {string} lang
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*/
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var languageError = function (lang) {
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if (lang_data[lang] && lang_data[lang].error_callbacks && lang_data[lang].error_callbacks.length) {
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lang_data[lang].error_callbacks.forEach(function (f) {
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f(lang);
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});
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}
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};
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Prism.hooks.add('complete', function (env) {
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if (env.element && env.language && !env.grammar) {
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if (env.language !== ignored_language) {
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registerElement(env.language, env.element);
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}
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}
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});
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}());
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