kmx.io/prism.js/plugins/jsonp-highlight/prism-jsonp-highlight.js

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  Commit

• Hash : 9652d752
  Author :
  Date : 2015-10-13T21:39:58
  

  Add some missing checks to prevent errors in IE8. Fix #9

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• plugins/jsonp-highlight/prism-jsonp-highlight.js

• (function() {
  	if ( !self.Prism || !self.document || !document.querySelectorAll || ![].filter) return;
  
  	var adapters = [];
  	function registerAdapter(adapter) {
  		if (typeof adapter === "function" && !getAdapter(adapter)) {
  			adapters.push(adapter);
  		}
  	}
  	function getAdapter(adapter) {
  		if (typeof adapter === "function") {
  			return adapters.filter(function(fn) { return fn.valueOf() === adapter.valueOf()})[0];
  		}
  		else if (typeof adapter === "string" && adapter.length > 0) {
  			return adapters.filter(function(fn) { return fn.name === adapter})[0];
  		}
  		return null;
  	}
  	function removeAdapter(adapter) {
  		if (typeof adapter === "string")
  			adapter = getAdapter(adapter);
  		if (typeof adapter === "function") {
  			var index = adapters.indexOf(adapter);
  			if (index >=0) {
  				adapters.splice(index,1);
  			}
  		}
  	}
  
  	Prism.plugins.jsonphighlight = {
  		registerAdapter: registerAdapter,
  		removeAdapter: removeAdapter,
  		highlight: highlight
  	};
  	registerAdapter(function github(rsp, el) {
  		if ( rsp && rsp.meta && rsp.data ) {
  			if ( rsp.meta.status && rsp.meta.status >= 400 ) {
  				return "Error: " + ( rsp.data.message || rsp.meta.status );
  			}
  			else if ( typeof(rsp.data.content) === "string" ) {
  				return typeof(atob) === "function"
  					? atob(rsp.data.content.replace(/\s/g, ""))
  					: "Your browser cannot decode base64";
  			}
  		}
  		return null;
  	});
  	registerAdapter(function gist(rsp, el) {
  		if ( rsp && rsp.meta && rsp.data && rsp.data.files ) {
  			if ( rsp.meta.status && rsp.meta.status >= 400 ) {
  				return "Error: " + ( rsp.data.message || rsp.meta.status );
  			}
  			else {
  				var filename = el.getAttribute("data-filename");
  				if (filename == null) {
  					// Maybe in the future we can somehow render all files
  					// But the standard <script> include for gists does that nicely already,
  					// so that might be getting beyond the scope of this plugin
  					for (var key in rsp.data.files) {
  						if (rsp.data.files.hasOwnProperty(key)) {
  							filename = key;
  							break;
  						}
  					}
  				}
  				if (rsp.data.files[filename] !== undefined) {
  					return rsp.data.files[filename].content;
  				}
  				else {
  					return "Error: unknown or missing gist file " + filename;
  				}
  			}
  		}
  		return null;
  	});
  	registerAdapter(function bitbucket(rsp, el) {
  		return rsp && rsp.node && typeof(rsp.data) === "string"
  			? rsp.data
  			: null;
  	});
  
  	var jsonpcb = 0,
  	    loadstr = "Loading…";
  
  	function highlight() {
  		Array.prototype.slice.call(document.querySelectorAll("pre[data-jsonp]")).forEach(function(pre) {
  			pre.textContent = "";
  
  			var code = document.createElement("code");
  			code.textContent = loadstr;
  			pre.appendChild(code);
  
  			var adapterfn = pre.getAttribute("data-adapter");
  			var adapter = null;
  			if ( adapterfn ) {
  				if ( typeof(window[adapterfn]) === "function" ) {
  					adapter = window[adapterfn];
  				}
  				else {
  					code.textContent = "JSONP adapter function '" + adapterfn + "' doesn't exist";
  					return;
  				}
  			}
  
  			var cb = "prismjsonp" + ( jsonpcb++ );
  			
  			var uri = document.createElement("a");
  			var src = uri.href = pre.getAttribute("data-jsonp");
  			uri.href += ( uri.search ? "&" : "?" ) + ( pre.getAttribute("data-callback") || "callback" ) + "=" + cb;
  
  			var timeout = setTimeout(function() {
  				// we could clean up window[cb], but if the request finally succeeds, keeping it around is a good thing
  				if ( code.textContent === loadstr )
  					code.textContent = "Timeout loading '" + src + "'";
  			}, 5000);
  			
  			var script = document.createElement("script");
  			script.src = uri.href;
  
  			window[cb] = function(rsp) {
  				document.head.removeChild(script);
  				clearTimeout(timeout);
  				delete window[cb];
  
  				var data = "";
  				
  				if ( adapter ) {
  					data = adapter(rsp, pre);
  				}
  				else {
  					for ( var p in adapters ) {
  						data = adapters[p](rsp, pre);
  						if ( data !== null ) break;
  					}
  				}
  
  				if (data === null) {
  					code.textContent = "Cannot parse response (perhaps you need an adapter function?)";
  				}
  				else {
  					code.textContent = data;
  					Prism.highlightElement(code);
  				}
  			};
  
  			document.head.appendChild(script);
  		});
  	}
  
  	highlight();
  })();

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