+ Very start of theme support. Various changes

core/theme.js

@@ -0,0 +1,68 @@
+/* jslint node: true */
+'use strict';
+
+var Config		= require('./config.js').config;
+var art			= require('./art.js');
+var miscUtil	= require('./misc_util.js');
+var fs			= require('fs');
+var paths		= require('path');
+var async		= require('async');
+
+exports.getThemeInfo			= getThemeInfo;
+exports.getThemeArt				= getThemeArt;
+
+
+//	getThemeInfo(themeName)
+/*
+//	getThemeFile(themeShortName, name)
+	//	getArt(name, {
+		basePath : themeDir,
+	}
+*/
+
+function getThemeInfo(themeID, cb) {
+	var path = paths.join(Config.paths.art, themeID, 'theme_info.json');
+
+	fs.readFile(path, function onData(err, data) {
+		if(err) {
+			cb(err);
+		} else {
+			try {
+				var info = JSON.parse(data);
+				return info;
+			} catch(e) {
+				cb(err);
+			}
+		}
+	});
+}
+
+function getThemeArt(name, themeID, options, cb) {
+	//	allow options to be optional
+	if(typeof cb === 'undefined') {
+		cb		= options;
+		options = {};
+	}
+
+	//	set/override some options
+	options.asAnsi		= true;
+	options.readSauce	= true;	//	can help with encoding
+	options.random		= miscUtil.valueWithDefault(options.random, true);
+	options.basePath	= paths.join(Config.paths.art, themeID);
+
+	art.getArt(name, options, function onThemeArt(err, theArt) {
+		if(err) {
+			//	try fallback
+			options.basePath = Config.paths.art;
+			art.getArt(name, options, function onFallbackArt(err, theArt) {
+				if(err) {
+					cb(err);
+				} else {
+					cb(null, theArt.data);
+				}
+			});
+		} else {
+			cb(null, theArt.data);
+		}
+	});
+}