mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-06-13 17:16:48 +00:00
100 lines
3.0 KiB
JavaScript
100 lines
3.0 KiB
JavaScript
/*\
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title: $:/core/modules/parsers/wikiparser/rules/run/html.js
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type: application/javascript
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module-type: wikirunrule
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Wiki rule for HTML elements and widgets. For example:
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{{{
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<aside>
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This is an HTML5 aside element
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</aside>
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<_slider target="MyTiddler">
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This is a widget invocation
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</_slider>
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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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exports.name = "html";
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var voidElements = "area,base,br,col,command,embed,hr,img,input,keygen,link,meta,param,source,track,wbr".split(",");
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exports.init = function() {
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// Regexp to match
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this.matchRegExp = /<(_)?([A-Za-z]+)(\s*[^>]*?)(\/)?>/mg;
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};
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/*
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Parse the most recent match
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*/
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exports.parse = function() {
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// Get all the details of the match in case this parser is called recursively
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var isWidget = !!this.match[1],
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tagName = this.match[2],
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attributeString = this.match[3],
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isSelfClosing = !!this.match[4];
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// Move past the tag name and parameters
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this.parser.pos = this.matchRegExp.lastIndex;
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var reLineBreak = /(\r?\n)/mg,
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reAttr = /\s*([A-Za-z\-_]+)(?:\s*=\s*(?:("[^"]*")|('[^']*')|(\{\{[^\}]*\}\})|([^"'\s]+)))?/mg,
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isBlock;
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// Process the attributes
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var attrMatch = reAttr.exec(attributeString),
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attributes = {};
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while(attrMatch) {
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var name = attrMatch[1],
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value;
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if(attrMatch[2]) { // Double quoted
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value = {type: "string", value: attrMatch[2].substring(1,attrMatch[2].length-1)};
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} else if(attrMatch[3]) { // Single quoted
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value = {type: "string", value: attrMatch[3].substring(1,attrMatch[3].length-1)};
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} else if(attrMatch[4]) { // Double curly brace quoted
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value = {type: "indirect", textReference: attrMatch[4].substr(2,attrMatch[4].length-4)};
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} else if(attrMatch[5]) { // Unquoted
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value = {type: "string", value: attrMatch[5]};
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} else { // Valueless
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value = {type: "string", value: "true"}; // TODO: We should have a way of indicating we want an attribute without a value
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}
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attributes[name] = value;
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attrMatch = reAttr.exec(attributeString);
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}
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// Check for a line break immediate after the opening tag
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reLineBreak.lastIndex = this.parser.pos;
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var lineBreakMatch = reLineBreak.exec(this.parser.source);
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if(lineBreakMatch && lineBreakMatch.index === this.parser.pos) {
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this.parser.pos = lineBreakMatch.index + lineBreakMatch[0].length;
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isBlock = true;
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} else {
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isBlock = false;
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}
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if(!isSelfClosing && (isWidget || voidElements.indexOf(tagName) === -1)) {
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var reEndString = "(</" + (isWidget ? "_" : "") + tagName + ">)",
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reEnd = new RegExp(reEndString,"mg"),
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content;
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if(isBlock) {
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content = this.parser.parseBlocks(reEndString);
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} else {
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content = this.parser.parseRun(reEnd);
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}
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reEnd.lastIndex = this.parser.pos;
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var endMatch = reEnd.exec(this.parser.source);
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if(endMatch && endMatch.index === this.parser.pos) {
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this.parser.pos = endMatch.index + endMatch[0].length;
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}
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} else {
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content = [];
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}
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var element = {type: isWidget ? "widget" : "element", tag: tagName, isBlock: isBlock, attributes: attributes, children: content};
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return [element];
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};
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})();
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