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Subject: svn commit: r956185 - in
 /commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs:
 ./ require/ require/xml.js
Date: Sat, 19 Jun 2010 05:56:22 -0000
To: commits@commons.apache.org
From: jbeard@apache.org
Message-Id: <20100619055622.857F923889B6@eris.apache.org>

Author: jbeard
Date: Sat Jun 19 05:56:22 2010
New Revision: 956185

URL: http://svn.apache.org/viewvc?rev=956185&view=rev
Log:
Added xml.js, an xml plugin for requirejs.

Added:
    commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/
    commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/
    commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/xml.js   (with props)

Added: commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/xml.js
URL: http://svn.apache.org/viewvc/commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/xml.js?rev=956185&view=auto
==============================================================================
--- commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/xml.js (added)
+++ commons/sandbox/gsoc/2010/scxml-js/branches/browser-tests.1.ie/lib/js/requirejs/require/xml.js Sat Jun 19 05:56:22 2010
@@ -0,0 +1,206 @@
+/**
+ * @license RequireJS text Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT, GPL or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+/*jslint regexp: false, nomen: false, plusplus: false */
+/*global require: false, XMLHttpRequest: false, ActiveXObject: false */
+
+//>>includeStart("useStrict", pragmas.useStrict);
+"use strict";
+//>>includeEnd("useStrict");
+
+(function () {
+    var progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'],
+        xmlRegExp = /^\s*<\?xml(\s)+version=[\'\"](\d)*.(\d)*[\'\"](\s)*\?>/im,
+        bodyRegExp = /<body[^>]*>\s*([\s\S]+)\s*<\/body>/im;
+
+    if (!require.textStrip) {
+        require.textStrip = function (text) {
+            //Strips <?xml ...?> declarations so that external SVG and XML
+            //documents can be added to a document without worry. Also, if the string
+            //is an HTML document, only the part inside the body tag is returned.
+            if (text) {
+                text = text.replace(xmlRegExp, "");
+                var matches = text.match(bodyRegExp);
+                if (matches) {
+                    text = matches[1];
+                }
+            } else {
+                text = "";
+            }
+            return text;
+        };
+    }
+
+    //Upgrade require to add some methods for XHR handling. But it could be that
+    //this require is used in a non-browser env, so detect for existing method
+    //before attaching one.
+    if (!require.getXhr) {
+        require.getXhr = function () {
+            //Would love to dump the ActiveX crap in here. Need IE 6 to die first.
+            var xhr, i, progId;
+            if (typeof XMLHttpRequest !== "undefined") {
+                return new XMLHttpRequest();
+            } else {
+                for (i = 0; i < 3; i++) {
+                    progId = progIds[i];
+                    try {
+                        xhr = new ActiveXObject(progId);
+                    } catch (e) {}
+
+                    if (xhr) {
+                        progIds = [progId];  // so faster next time
+                        break;
+                    }
+                }   
+            }
+
+            if (!xhr) {
+                throw new Error("require.getXhr(): XMLHttpRequest not available");
+            }
+
+            return xhr;
+        };
+    }
+    
+    if (!require.fetchText) {
+	if(require.isBrowser){
+		require.fetchText = function (url, callback) {
+		    var xhr = require.getXhr();
+		    xhr.open('GET', url, true);
+		    xhr.onreadystatechange = function (evt) {
+			//Do not explicitly handle errors, those should be
+			//visible via console output in the browser.
+			if (xhr.readyState === 4) {
+			    callback(xhr.responseXML);
+			}
+		    };
+		    xhr.send(null);
+		};
+	}else{
+		//FIXME: this is actually a rhino-specific API, so maybe we should switch on something like isRhino, rather than isBrowser
+		require.fetchText = function (url, callback) {
+		    callback(readFile(url));
+		};
+	}
+    }
+
+    require.plugin({
+        prefix: "xml",
+
+        /**
+         * This callback is prefix-specific, only gets called for this prefix
+         */
+        require: function (name, deps, callback, context) {
+            //No-op, require never gets these text items, they are always
+            //a dependency, see load for the action.
+        },
+
+        /**
+         * Called when a new context is defined. Use this to store
+         * context-specific info on it.
+         */
+        newContext: function (context) {
+            require.mixin(context, {
+                text: {},
+                textWaiting: []
+            });
+        },
+
+        /**
+         * Called when a dependency needs to be loaded.
+         */
+        load: function (name, contextName) {
+            //Name has format: some.module!filext!strip!text
+            //The strip and text parts are optional.
+            //if strip is present, then that means only get the string contents
+            //inside a body tag in an HTML string. For XML/SVG content it means
+            //removing the <?xml ...?> declarations so the content can be inserted
+            //into the current doc without problems.
+            //If text is present, it is the actual text of the file.
+            var strip = false, text = null, key, url, index = name.indexOf("."),
+                modName = name.substring(0, index), fullKey,
+                ext = name.substring(index + 1, name.length),
+                context = require.s.contexts[contextName],
+                tWaitAry = context.textWaiting;
+
+            index = ext.indexOf("!");
+            if (index !== -1) {
+                //Pull off the strip arg.
+                strip = ext.substring(index + 1, ext.length);
+                ext = ext.substring(0, index);
+                index = strip.indexOf("!");
+                if (index !== -1 && strip.substring(0, index) === "strip") {
+                    //Pull off the text.
+                    text = strip.substring(index + 1, strip.length);
+                    strip = "strip";
+                } else if (strip !== "strip") {
+                    //strip is actually the inlined text.
+                    text = strip;
+                    strip = null;
+                }
+            }
+            key = modName + "!" + ext;
+            fullKey = strip ? key + "!" + strip : key;
+
+            //Store off text if it is available for the given key and be done.
+            if (text !== null && !context.text[key]) {
+                context.defined[name] = context.text[key] = text;
+                return;
+            }
+
+            //If text is not available, load it.
+            if (!context.text[key] && !context.textWaiting[key] && !context.textWaiting[fullKey]) {
+                //Keep track that the fullKey needs to be resolved, during the
+                //orderDeps stage.
+                if (!tWaitAry[fullKey]) {
+                    tWaitAry[fullKey] = tWaitAry[(tWaitAry.push({
+                        name: name,
+                        key: key,
+                        fullKey: fullKey,
+                        strip: !!strip
+                    }) - 1)];
+                }
+
+                //Load the text.
+                url = require.nameToUrl(modName, "." + ext, contextName);
+                context.loaded[name] = false;
+                require.fetchText(url, function (text) {
+                    context.text[key] = text;
+                    context.loaded[name] = true;
+                    require.checkLoaded(contextName);                    
+                });
+            }
+        },
+
+        /**
+         * Called when the dependencies of a module are checked.
+         */
+        checkDeps: function (name, deps, context) {
+            //No-op, checkDeps never gets these text items, they are always
+            //a dependency, see load for the action.
+        },
+
+        /**
+         * Called to determine if a module is waiting to load.
+         */
+        isWaiting: function (context) {
+            return !!context.textWaiting.length;
+        },
+
+        /**
+         * Called when all modules have been loaded.
+         */
+        orderDeps: function (context) {
+            //Clear up state since further processing could
+            //add more things to fetch.
+            var i, dep, text, tWaitAry = context.textWaiting;
+            context.textWaiting = [];
+            for (i = 0; (dep = tWaitAry[i]); i++) {
+                text = context.text[dep.key];
+                context.defined[dep.name] = dep.strip ? require.textStrip(text) : text;
+            }
+        }
+    });
+}());

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