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TiddlyWiki5/core/modules/parsers/old/wikitextparser/rules/wikilink.js

67 lines
1.8 KiB
JavaScript

/*\
title: $:/core/modules/parsers/wikitextparser/rules/wikilink.js
type: application/javascript
module-type: wikitextrule
Wiki text run 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 $tw: false */
"use strict";
exports.name = "wikilink";
exports.runParser = true;
var textPrimitives = {
upperLetter: "[A-Z\u00c0-\u00de\u0150\u0170]",
lowerLetter: "[a-z0-9_\\-\u00df-\u00ff\u0151\u0171]",
anyLetter: "[A-Za-z0-9_\\-\u00c0-\u00de\u00df-\u00ff\u0150\u0170\u0151\u0171]",
anyLetterStrict: "[A-Za-z0-9\u00c0-\u00de\u00df-\u00ff\u0150\u0170\u0151\u0171]"
};
textPrimitives.unWikiLink = "~";
textPrimitives.wikiLink = textPrimitives.upperLetter + "+" +
textPrimitives.lowerLetter + "+" +
textPrimitives.upperLetter +
textPrimitives.anyLetter + "*";
exports.regExpString = textPrimitives.unWikiLink + "?" + textPrimitives.wikiLink;
exports.parse = function(match,isBlock) {
this.pos = match.index + match[0].length;
// If the link starts with the unwikilink character then just output it as plain text
if(match[0].substr(0,1) === textPrimitives.unWikiLink) {
return [$tw.Tree.Text(match[0].substr(1))];
}
// If the link has been preceded with a letter then don't treat it as a link
if(match.index > 0) {
var preRegExp = new RegExp(textPrimitives.anyLetterStrict,"mg");
preRegExp.lastIndex = match.index-1;
var preMatch = preRegExp.exec(this.source);
if(preMatch && preMatch.index === match.index-1) {
return [$tw.Tree.Text(match[0])];
}
}
var macroNode = $tw.Tree.Macro("link",{
srcParams: {to: match[0]},
content: [$tw.Tree.Text(match[0])],
wiki: this.wiki
});
this.dependencies.mergeDependencies(macroNode.dependencies);
return [macroNode];
};
})();