TiddlyWiki5/core/modules/parsers/wikiparser/rules/wikilink.js

80 wiersze
2.0 KiB
JavaScript

/*\
title: $:/core/modules/parsers/wikiparser/rules/wikilink.js
type: application/javascript
module-type: wikirule
Wiki text inline rule for wiki links. For example:
```
AWikiLink
AnotherLink
~SuppressedLink
```
Precede a camel case word with `~` to prevent it from being recognised as a link.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
exports.name = "wikilink";
exports.types = {inline: true};
var textPrimitives = {
upperLetter: "[A-Z\u00c0-\u00de\u0150\u0170]",
lowerLetter: "[a-z0-9_\\-\u00df-\u00ff\u0151\u0171]",
anyLetter: "[A-Za-z0-9_\\-\u00c0-\u00de\u00df-\u00ff\u0150\u0170\u0151\u0171]",
anyLetterStrict: "[A-Za-z0-9\u00c0-\u00de\u00df-\u00ff\u0150\u0170\u0151\u0171]"
};
textPrimitives.unWikiLink = "~";
textPrimitives.wikiLink = textPrimitives.upperLetter + "+" +
textPrimitives.lowerLetter + "+" +
textPrimitives.upperLetter +
textPrimitives.anyLetter + "*";
exports.init = function(parser) {
this.parser = parser;
// Regexp to match
this.matchRegExp = new RegExp(textPrimitives.unWikiLink + "?" + textPrimitives.wikiLink,"mg");
};
/*
Parse the most recent match
*/
exports.parse = function() {
// Get the details of the match
var linkText = this.match[0];
// Move past the macro call
this.parser.pos = this.matchRegExp.lastIndex;
// If the link starts with the unwikilink character then just output it as plain text
if(linkText.substr(0,1) === textPrimitives.unWikiLink) {
return [{type: "text", text: linkText.substr(1)}];
}
// If the link has been preceded with a letter then don't treat it as a link
if(this.match.index > 0) {
var preRegExp = new RegExp(textPrimitives.anyLetterStrict,"mg");
preRegExp.lastIndex = this.match.index-1;
var preMatch = preRegExp.exec(this.parser.source);
if(preMatch && preMatch.index === this.match.index-1) {
return [{type: "text", text: linkText}];
}
}
return [{
type: "element",
tag: "$link",
attributes: {
to: {type: "string", value: linkText}
},
children: [{
type: "text",
text: linkText
}]
}];
};
})();