205 lines
6.0 KiB
Java
205 lines
6.0 KiB
Java
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<link rel="icon" href="favicon.png" />
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<title>Autoloader ▲ Prism plugins</title>
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<base href="../.." />
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<link rel="stylesheet" href="style.css" />
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<link rel="stylesheet" href="themes/prism.css" data-noprefix />
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<style>
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.download-grammars {
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font: inherit;
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border: 0;
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padding: 0;
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margin: 0;
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background: none;
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text-decoration: underline;
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cursor: pointer;
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}
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.download-grammars.loading:after {
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content: ' [Generating... ' attr(data-progress) '%]';
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}
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</style>
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<script src="prefixfree.min.js"></script>
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<script>var _gaq = [['_setAccount', 'UA-33746269-1'], ['_trackPageview']];</script>
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<script src="https://www.google-analytics.com/ga.js" async></script>
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</head>
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<body>
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<header>
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<div class="intro" data-src="templates/header-plugins.html" data-type="text/html"></div>
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<h2>Autoloader</h2>
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<p>Automatically loads the needed languages to highlight the code blocks.</p>
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</header>
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<section class="language-javascript">
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<h1>How to use</h1>
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<p>
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The plugin will automatically handle missing grammars and load them for you.
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To do this, you need to provide it with a directory of all the grammars you want.
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</p>
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<p>
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You can download all the available grammars by clicking on the following link: <button class="download-grammars" type="button">download all grammars</button>.<br />
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Alternatively, you can also clone the GitHub repo and take the <code>components</code> folder from there.
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</p>
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<p>
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You can then download Prism core and any plugins from the <a href="download.html">Download</a> page, without checking any languages (or just check the languages you want to load by default, e.g. if you're using a language a lot, then you probably want to save the extra HTTP request).
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</p>
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<p>
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A couple of additional options are available through the configuration object <code>Prism.plugins.autoloader</code>.
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</p>
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<h2>Specifying the grammars path</h2>
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<p>
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By default, the plugin will look for the missing grammars in the <code>components</code> folder.
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If your files are in a different location, you can specify it using the <code>languages_path</code> option:
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</p>
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<pre><code>Prism.plugins.autoloader.languages_path = 'path/to/grammars/';</code></pre>
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<h2>Using development versions</h2>
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<p>
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By default, the plugin uses the minified versions of the grammars.
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If you wish to use the development versions instead, you can set the <code>use_minified</code> option to false:
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</p>
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<pre><code>Prism.plugins.autoloader.use_minified = false;</code></pre>
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<h2>Specifying additional dependencies</h2>
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<p>
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All default dependencies are already included in the plugin.
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However, there are some cases where you might want to load an additional dependency for a specific code block.
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To do so, just add a <code>data-dependencies</code> attribute on you <code><code></code> or <code><pre></code> tags,
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containing a list of comma-separated language aliases.
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</p>
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<pre><code class="language-markup"><pre><code class="language-pug" data-dependencies="less">
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:less
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foo {
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color: @red;
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}
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</code><pre></code></pre>
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<h2>Force to reload a grammar</h2>
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<p>
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The plugin usually doesn't reload a grammar if it already exists.
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In some very specific cases, you might however want to do so.
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If you add an exclamation mark after an alias in the <code>data-dependencies</code> attribute,
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this language will be reloaded.
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</p>
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<pre><code class="language-markup"><pre class="language-markup" data-dependencies="markup,css!"><code></code></pre>
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</section>
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<section>
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<h1>Examples</h1>
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<p>Note that no languages are loaded on this page by default.</p>
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<p>Basic usage with some Perl code:</p>
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<pre><code class="language-perl">my ($class, $filename) = @_;</code></pre>
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<p>The Less filter used in Pug:</p>
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<pre><code class="language-pug" data-dependencies="less">:less
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foo {
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color: @red;
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}</code></pre>
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</section>
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<footer data-src="templates/footer.html" data-type="text/html"></footer>
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<script src="components/prism-core.js"></script>
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<script src="plugins/autoloader/prism-autoloader.js" data-autoloader-path="components"></script>
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<script src="utopia.js"></script>
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<script src="components.js"></script>
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<script src="code.js"></script>
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<script src="vendor/promise.js"></script>
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<script src="vendor/jszip.min.js"></script>
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<script src="vendor/FileSaver.min.js"></script>
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<script>
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function getZip(files, elt) {
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return new Promise(function (resolve, reject) {
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var zip = new JSZip();
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var l = files.length;
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var i = 0;
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var process = function () {
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elt.setAttribute('data-progress', Math.round(i / l * 100));
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if (i < l) {
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addFile(zip, files[i][0], files[i][1]).then(function () {
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i++;
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process();
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});
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} else {
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resolve(zip);
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}
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};
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process();
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});
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}
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function addFile(zip, filename, filepath) {
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return getFileContents(filepath).then(function (contents) {
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zip.file(filename, contents);
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});
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}
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function getFileContents(filepath) {
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return new Promise(function (resolve, reject) {
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$u.xhr({
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url: filepath,
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callback: function (xhr) {
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if (xhr.status < 400 && xhr.responseText) {
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resolve(xhr.responseText);
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} else {
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// Never rejected, ignore errors
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resolve();
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}
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}
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});
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});
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}
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$('.download-grammars').addEventListener('click', function () {
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var btn = this;
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if (btn.classList.contains('loading')) {
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return;
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}
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btn.classList.add('loading');
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btn.setAttribute('data-progress', 0);
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var files = [];
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for (var id in components.languages) {
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if (id === 'meta') {
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continue;
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}
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var basepath = components.languages.meta.path.replace(/\{id}/g, id);
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var basename = basepath.substring(basepath.lastIndexOf('/') + 1);
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files.push([basename + '.js', basepath + '.js']);
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files.push([basename + '.min.js', basepath + '.min.js']);
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}
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getZip(files, btn).then(function (zip) {
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btn.classList.remove('loading');
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return zip.generateAsync({type: 'blob'});
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}).then(function (blob) {
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saveAs(blob, 'prism-components.zip');
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});
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});
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</script>
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</body>
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</html>
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