87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
/*\
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title: $:/core/modules/parsers/wikiparser/rules/typedblock.js
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type: application/javascript
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module-type: wikirule
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Wiki text rule for typed blocks. For example:
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```
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$$$.js
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This will be rendered as JavaScript
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$$$
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$$$.svg
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<svg xmlns="http://www.w3.org/2000/svg" width="150" height="100">
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<circle cx="100" cy="50" r="40" stroke="black" stroke-width="2" fill="red" />
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</svg>
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$$$
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$$$text/vnd.tiddlywiki>text/html
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This will be rendered as an //HTML representation// of WikiText
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$$$
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```
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var widget = require("$:/core/modules/widgets/widget.js");
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exports.name = "typedblock";
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exports.types = {block: true};
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exports.init = function(parser) {
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this.parser = parser;
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// Regexp to match
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this.matchRegExp = /\$\$\$([^ >\r\n]*)(?: *> *([^ \r\n]+))?\r?\n/mg;
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};
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exports.parse = function() {
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var reEnd = /\r?\n\$\$\$\r?(?:\n|$)/mg;
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// Save the type
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var parseType = this.match[1],
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renderType = this.match[2];
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// Move past the match
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this.parser.pos = this.matchRegExp.lastIndex;
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var start = this.parser.pos;
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// Look for the end of the block
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reEnd.lastIndex = this.parser.pos;
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var match = reEnd.exec(this.parser.source),
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text;
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// Process the block
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if(match) {
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text = this.parser.source.substring(this.parser.pos,match.index);
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this.parser.pos = match.index + match[0].length;
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} else {
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text = this.parser.source.substr(this.parser.pos);
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this.parser.pos = this.parser.sourceLength;
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}
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// Parse the block according to the specified type
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var parser = this.parser.wiki.parseText(parseType,text,{defaultType: "text/plain"});
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// If there's no render type, just return the parse tree
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if(!renderType) {
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return parser.tree;
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} else {
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// Otherwise, render to the rendertype and return in a <PRE> tag
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var widgetNode = this.parser.wiki.makeWidget(parser),
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container = $tw.fakeDocument.createElement("div");
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widgetNode.render(container,null);
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text = renderType === "text/html" ? container.innerHTML : container.textContent;
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return [{
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type: "element",
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tag: "pre",
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children: [{
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type: "text",
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text: text,
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start: start,
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end: this.parser.pos
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}]
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}];
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}
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};
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})();
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