function JSLoaderEnvironment() { this.prefix = "/assets/"; var _remote = false; var s = 0; var _script_tags = document.getElementsByTagName("script"); var endsWith = function(str, substr) { return (str && str.indexOf(substr) == (str.length - substr.length)) }; for (s = 0; s < _script_tags.length; ++s) { var src = _script_tags[s].src; var src_orig = src; if (src) { if (src.indexOf("://") > -1) { src = src.substring(src.indexOf("://") + 3); src = src.substring(src.indexOf("/")) } if (endsWith(src, "jsloader.js") || endsWith(src, "jsloader-debug.js")) { _remote = (src_orig.indexOf(document.domain) == -1); if (_remote) { src = src_orig } this.prefix = src.substring(0, src.lastIndexOf("/") + 1) } } } this.suffix = ".js"; this.makeJSLoaderPath = function(m, p, r, suff) { if (!p && !r) { return this.stripExternalRef(m) } return this.prefix + m + "/" + p + "/incr/versions/" + r + ((suff) ? this.suffix : "") }; this.makePath = function(m, p, r) { if (!p && !r) { return this.stripExternalRef(m) } return this.prefix + m + "/" + p + "/" + r + "/" }; this.env = new Object(); this.loaders = new Object(); this.setEnv = function(k, v) { this.env[k] = v }; this.getEnv = function(k) { return this.env[k] }; this._loadedJSLoaders = new Object(); this.normalize = function(m, p, r) { return (m + "__" + p + "__" + r).toLowerCase() }; this.isLoaded = function(m, p, r) { var xkey = this.normalize(m, p, r); return (this._loadedJSLoaders[xkey] != null) }; this.getLoader = function(m, p, r) { var key = this.normalize(m, p, r); var loader = this.loaders[key]; if (loader) { return loader } else { loader = new JSSubLoader(this, this.makeJSLoaderPath(m, p, r, false) + "/"); var __path = this.makePath(m, p, r); this.setEnv(p.toUpperCase() + "_PATH", __path); this.loaders[key] = loader; return loader } }; this.load = function(m, p, r) { var key = this.normalize(m, p, r); var url = this.makeJSLoaderPath(m, p, r, true); try { if (this.isLoaded(m, p, r)) { return } this.loadJavaScript(url); this._loadedJSLoaders[key] = "true" } catch (e) { this.handleError(e) } }; this.loadJavaScript = function(url) { url = this.stripExternalRef(url); document.writeln("<script src='" + url + "' type='text/javascript'><\/script>") }; this.loadStyleSheet = function(url) { url = this.stripExternalRef(url); document.writeln("<link rel='stylesheet' href='" + url + "' type='text/css' />") }; this.stripExternalRef = function(s) { var exprs = [/\.\.+/g, /\/\/+/g, /\\\\+/g, /\:+/g, /\'+/g, /\%+/g]; exprs = [/\.\.+/g, /\\\\+/g, /\'+/g, /\%+/g]; if (_remote) { for (var i = 0; i < exprs.length; i++) { s = s.replace(exprs[i], "") } } return s }; this.handleError = function(e) { }; return this } function JSSubLoader(env_, prefix_) { this.environment = env_; this.prefix = prefix_; this.loaded = new Object(); this.normalize = function(str) { return str.toLowerCase() }; this.loadAll = function(pkgs_) { for (i = 0; i < pkgs_.length; ++i) { this.load(pkgs_[i]) } }; this.load = function(pkg) { var p = this.normalize(pkg); if (this.loaded[p]) { return } this.loaded[p] = pkg; this.environment.loadJavaScript(prefix_ + pkg + ".js") } } JSLoader = new JSLoaderEnvironment();