83 lines
2.3 KiB
JavaScript
83 lines
2.3 KiB
JavaScript
/**
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Support for various code blocks
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**/
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var acceptableCodeClasses;
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function init() {
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acceptableCodeClasses = Discourse.SiteSettings.highlighted_languages.split("|");
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if (Discourse.SiteSettings.highlighted_languages.length > 0) {
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var regexpSource = "^lang-(" + "nohighlight|auto|" + Discourse.SiteSettings.highlighted_languages + ")$";
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Discourse.Markdown.whiteListTag('code', 'class', new RegExp(regexpSource, "i"));
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}
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}
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if (Discourse.SiteSettings && Discourse.SiteSettings.highlighted_languages) {
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init();
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} else {
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Discourse.initializer({initialize: init, name: 'load-acceptable-code-classes'});
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}
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var textCodeClasses = ["text", "pre", "plain"];
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function codeFlattenBlocks(blocks) {
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var result = "";
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blocks.forEach(function(b) {
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result += b;
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if (b.trailing) { result += b.trailing; }
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});
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return result;
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}
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Discourse.Dialect.replaceBlock({
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start: /^`{3}([^\n\[\]]+)?\n?([\s\S]*)?/gm,
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stop: /^```$/gm,
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withoutLeading: /\[quote/gm, //if leading text contains a quote this should not match
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emitter: function(blockContents, matches) {
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var klass = Discourse.SiteSettings.default_code_lang;
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if (matches[1] && acceptableCodeClasses.indexOf(matches[1]) !== -1) {
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klass = matches[1];
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}
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if (textCodeClasses.indexOf(matches[1]) !== -1) {
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return ['p', ['pre', ['code', {'class': 'lang-nohighlight'}, codeFlattenBlocks(blockContents) ]]];
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} else {
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return ['p', ['pre', ['code', {'class': 'lang-' + klass}, codeFlattenBlocks(blockContents) ]]];
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}
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}
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});
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Discourse.Dialect.replaceBlock({
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start: /(<pre[^\>]*\>)([\s\S]*)/igm,
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stop: /<\/pre>/igm,
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rawContents: true,
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skipIfTradtionalLinebreaks: true,
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emitter: function(blockContents) {
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return ['p', ['pre', codeFlattenBlocks(blockContents)]];
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}
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});
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// Ensure that content in a code block is fully escaped. This way it's not white listed
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// and we can use HTML and Javascript examples.
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Discourse.Dialect.on('parseNode', function (event) {
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var node = event.node,
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path = event.path;
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if (node[0] === 'code') {
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var contents = node[node.length-1],
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regexp;
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if (path && path[path.length-1] && path[path.length-1][0] && path[path.length-1][0] === "pre") {
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regexp = / +$/g;
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} else {
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regexp = /^ +| +$/g;
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}
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node[node.length-1] = Handlebars.Utils.escapeExpression(contents.replace(regexp,''));
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}
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});
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