Added support for JPEG and PNG bitmap tiddlers

Author: Jeremy Ruston

js/App.js

@@ -16,6 +16,7 @@ var WikiStore = require("./WikiStore.js").WikiStore,
 	WikiTextParser = require("./WikiTextParser.js").WikiTextParser,
 	JavaScriptParser = require("./JavaScriptParser.js").JavaScriptParser,
 	SVGParser = require("./SVGParser.js").SVGParser,
+	BitmapParser = require("./BitmapParser.js").BitmapParser,
 	Navigators = require("./Navigators.js").Navigators,
 	StoryNavigator = require("./StoryNavigator.js").StoryNavigator;
 
@@ -30,6 +31,10 @@ var App = function() {
 		store: this.store
 	}));
 	this.store.registerParser("image/svg+xml",new SVGParser());
+	var bitmapParser = new BitmapParser();
+	this.store.registerParser("image/jpg",bitmapParser);
+	this.store.registerParser("image/jpeg",bitmapParser);
+	this.store.registerParser("image/png",bitmapParser);
 	// Register the standard tiddler serializers and deserializers
 	tiddlerInput.register(this.store);
 	tiddlerOutput.register(this.store);

js/BitmapParser.js

@@ -0,0 +1,34 @@
+/*\
+title: js/BitmapParser.js
+
+Compiles bitmap images into JavaScript functions that render them in HTML
+
+\*/
+(function(){
+
+/*jslint node: true */
+"use strict";
+
+// The parse tree is degenerate
+var BitmapParseTree = function() {
+	this.dependencies = [];
+};
+
+BitmapParseTree.prototype.compile = function(type) {
+	if(type === "text/html") {
+		return "(function (tiddler,store,utils) {return '<img src=\"data:' + tiddler.fields.type + ';base64,' + tiddler.fields.text + '\">';})";
+	} else {
+		return null;
+	}
+};
+
+var BitmapParser = function() {
+};
+
+BitmapParser.prototype.parse = function() {
+	return new BitmapParseTree();
+};
+
+exports.BitmapParser = BitmapParser;
+
+})();

js/FileRetriever.js

@@ -19,7 +19,17 @@ var fs = require("fs"),
 var FileRetriever = exports;
 
 var fileRequest = function fileRequest(filepath,callback) {
-	fs.readFile(filepath,"utf8", callback);
+	fs.readFile(filepath, function (err,data) {
+		if(err) {
+			callback(err); 
+		} else {
+			if([".jpg",".jpeg",".png"].indexOf(path.extname(filepath)) !== -1) {
+				callback(err,data.toString("base64"));
+			} else {
+				callback(err,data.toString("utf8"));
+			}
+		}
+	});
 };
 
 var httpRequest = function(fileurl,callback) {

tiddlywiki5/tiddlers/Motovun Jack.jpg

@@ -0,0 +1,3 @@
+title: Motovun Jack.jpg
+type: image/jpg
+source: http://www.flickr.com/photos/jermy/6292279493/in/photostream

tiddlywiki5/tiddlers/Motovun Jack.jpg.meta

@@ -7,6 +7,8 @@ tiddler: TiddlyWikiArchitecture.tid
 tiddler: TiddlyWikiInternals.tid
 tiddler: NewWikiTextFeatures.tid
 
+tiddler: Motovun Jack.jpg
+
 tiddler: SiteTitle.tid
 tiddler: SiteSubtitle.tid
 

tiddlywiki5/tiddlers/split.recipe

@@ -18,6 +18,7 @@ jsmodule: ../js/TiddlerInput.js
 jsmodule: ../js/TiddlerOutput.js
 jsmodule: ../js/WikiStore.js
 jsmodule: ../js/SVGParser.js
+jsmodule: ../js/BitmapParser.js
 jsmodule: ../js/WikiTextParser.js
 jsmodule: ../js/WikiTextRules.js
 jsmodule: ../js/WikiTextParseTree.js