mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-25 09:30:28 +00:00
157 lines
4.5 KiB
JavaScript
157 lines
4.5 KiB
JavaScript
/*\
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title: $:/core/modules/deserializers.js
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type: application/javascript
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module-type: tiddlerdeserializer
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Functions to deserialise tiddlers from a block of text
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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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/*
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Utility function to parse an old-style tiddler DIV in a *.tid file. It looks like this:
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<div title="Title" creator="JoeBloggs" modifier="JoeBloggs" created="201102111106" modified="201102111310" tags="myTag [[my long tag]]">
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<pre>The text of the tiddler (without the expected HTML encoding).
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</pre>
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</div>
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Note that the field attributes are HTML encoded, but that the body of the <PRE> tag is not encoded.
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When these tiddler DIVs are encountered within a TiddlyWiki HTML file then the body is encoded in the usual way.
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*/
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var parseTiddlerDiv = function(text /* [,fields] */) {
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// Slot together the default results
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var result = {};
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if(arguments.length > 1) {
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for(var f=1; f<arguments.length; f++) {
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var fields = arguments[f];
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for(var t in fields) {
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result[t] = fields[t];
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}
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}
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}
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// Parse the DIV body
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var startRegExp = /^\s*<div\s+([^>]*)>(\s*<pre>)?/gi,
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endRegExp,
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match = startRegExp.exec(text);
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if(match) {
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// Old-style DIVs don't have the <pre> tag
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if(match[2]) {
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endRegExp = /<\/pre>\s*<\/div>\s*$/gi;
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} else {
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endRegExp = /<\/div>\s*$/gi;
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}
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var endMatch = endRegExp.exec(text);
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if(endMatch) {
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// Extract the text
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result.text = text.substring(match.index + match[0].length,endMatch.index);
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// Process the attributes
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var attrRegExp = /\s*([^=\s]+)\s*=\s*"([^"]*)"/gi,
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attrMatch;
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do {
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attrMatch = attrRegExp.exec(match[1]);
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if(attrMatch) {
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var name = attrMatch[1];
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var value = attrMatch[2];
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result[name] = value;
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}
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} while(attrMatch);
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return result;
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}
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}
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return undefined;
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};
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exports["application/x-tiddler-html-div"] = function(text,fields) {
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return [parseTiddlerDiv(text,fields)];
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};
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exports["application/json"] = function(text,fields) {
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var tiddlers = JSON.parse(text),
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result = [],
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getKnownFields = function(tid) {
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var fields = {};
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"title text created creator modified modifier type tags".split(" ").forEach(function(value) {
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if(tid[value] !== null) {
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fields[value] = tid[value];
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}
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});
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return fields;
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};
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for(var t=0; t<tiddlers.length; t++) {
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result.push(getKnownFields(tiddlers[t]));
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}
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return result;
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};
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/*
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Parse an HTML file into tiddlers. There are three possibilities:
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# A TiddlyWiki classic HTML file containing `text/x-tiddlywiki` tiddlers
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# A TiddlyWiki5 HTML file containing `text/vnd.tiddlywiki` tiddlers
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# An ordinary HTML file
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*/
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exports["text/html"] = function(text,fields) {
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// Check if we've got a store area
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var storeAreaMarkerRegExp = /<div id=["']?storeArea['"]?( style=["']?display:none;["']?)?>/gi,
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match = storeAreaMarkerRegExp.exec(text);
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if(match) {
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// If so, it's either a classic TiddlyWiki file or a TW5 file
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// First read the normal tiddlers
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var results = deserializeTiddlyWikiFile(text,storeAreaMarkerRegExp.lastIndex,!!match[1],fields);
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// Then any system tiddlers
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var systemAreaMarkerRegExp = /<div id=["']?systemArea['"]?( style=["']?display:none;["']?)?>/gi,
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sysMatch = systemAreaMarkerRegExp.exec(text);
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if(sysMatch) {
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results.push.apply(results,deserializeTiddlyWikiFile(text,systemAreaMarkerRegExp.lastIndex,!!sysMatch[1],fields));
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}
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return results
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} else {
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// It's not a TiddlyWiki so we'll return the entire HTML file as a tiddler
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return deserializeHtmlFile(text,fields);
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}
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};
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function deserializeHtmlFile(text,fields) {
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var result = {};
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$tw.utils.each(fields,function(value,name) {
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result[name] = value;
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});
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result.text = text;
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result.type = "text/html";
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return [result];
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}
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function deserializeTiddlyWikiFile(text,storeAreaEnd,isTiddlyWiki5,fields) {
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var results = [],
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endOfDivRegExp = /(<\/div>\s*)/gi,
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startPos = storeAreaEnd,
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defaultType = isTiddlyWiki5 ? undefined : "text/x-tiddlywiki";
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endOfDivRegExp.lastIndex = startPos;
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var match = endOfDivRegExp.exec(text);
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while(match) {
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var endPos = endOfDivRegExp.lastIndex,
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tiddlerFields = parseTiddlerDiv(text.substring(startPos,endPos),fields,{type: defaultType});
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if(!tiddlerFields) {
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break;
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}
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$tw.utils.each(tiddlerFields,function(value,name) {
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if(typeof value === "string") {
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tiddlerFields[name] = $tw.utils.htmlDecode(value);
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}
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});
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if(tiddlerFields.text !== null) {
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results.push(tiddlerFields);
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}
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startPos = endPos;
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match = endOfDivRegExp.exec(text);
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}
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return results;
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}
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})();
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