Author: fmeschbe
Date: Wed Jan 16 01:59:50 2008
New Revision: 612405
URL: http://svn.apache.org/viewvc?rev=612405&view=rev
Log:
SLING-157 Add a wrapper for the java PrintWriter providing customized print,
write, println and printf methods
Added:
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/wrapper/ScriptablePrintWriter.java
Modified:
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/helper/SlingWrapFactory.java
Modified:
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/helper/SlingWrapFactory.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/helper/SlingWrapFactory.java?rev=612405&r1=612404&r2=612405&view=diff
==============================================================================
---
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/helper/SlingWrapFactory.java
(original)
+++
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/helper/SlingWrapFactory.java
Wed Jan 16 01:59:50 2008
@@ -18,10 +18,13 @@
*/
package org.apache.sling.scripting.javascript.helper;
+import java.io.PrintWriter;
+
import javax.jcr.Node;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.scripting.javascript.wrapper.ScriptableNode;
+import org.apache.sling.scripting.javascript.wrapper.ScriptablePrintWriter;
import org.apache.sling.scripting.javascript.wrapper.ScriptableResource;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
@@ -54,6 +57,9 @@
new Object[] { javaObject });
} else if (javaObject instanceof Node) {
return cx.newObject(scope, ScriptableNode.CLASSNAME,
+ new Object[] { javaObject });
+ } else if (javaObject instanceof PrintWriter) {
+ return cx.newObject(scope, ScriptablePrintWriter.CLASSNAME,
new Object[] { javaObject });
}
} catch (Exception e) {
Added:
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/wrapper/ScriptablePrintWriter.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/wrapper/ScriptablePrintWriter.java?rev=612405&view=auto
==============================================================================
---
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/wrapper/ScriptablePrintWriter.java
(added)
+++
incubator/sling/trunk/scripting/javascript/src/main/java/org/apache/sling/scripting/javascript/wrapper/ScriptablePrintWriter.java
Wed Jan 16 01:59:50 2008
@@ -0,0 +1,170 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.sling.scripting.javascript.wrapper;
+
+import java.io.PrintWriter;
+import java.util.Locale;
+
+import javax.servlet.http.HttpServletRequest;
+
+import org.apache.sling.api.scripting.SlingBindings;
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.Function;
+import org.mozilla.javascript.ScriptRuntime;
+import org.mozilla.javascript.Scriptable;
+import org.mozilla.javascript.ScriptableObject;
+import org.mozilla.javascript.Wrapper;
+
+public class ScriptablePrintWriter extends ScriptableObject implements Wrapper
{
+
+ public static final String CLASSNAME = "PrintWriter";
+
+ private PrintWriter writer;
+
+ // the locale to use for printf
+ private Locale locale;
+
+ public ScriptablePrintWriter() {
+ }
+
+ public ScriptablePrintWriter(PrintWriter writer) {
+ this.writer = writer;
+ }
+
+ public void jsConstructor(Object res) {
+ this.writer = (PrintWriter) res;
+ }
+
+ @Override
+ public String getClassName() {
+ return CLASSNAME;
+ }
+
+ // print args to writer if any
+ // this method supports write(Object)
+ public static void jsFunction_write(Context cx, Scriptable thisObj,
+ Object[] args, Function funObj) {
+ print(thisObj, args);
+ }
+
+ // print args to writer if any
+ // this method supports print(Object)
+ public static void jsFunction_print(Context cx, Scriptable thisObj,
+ Object[] args, Function funObj) {
+ print(thisObj, args);
+ }
+
+ // print a formatted string to the writer. The first arg is used as the
+ // formatter Locale if it is a Locale instance. The next argument is the
+ // format string followed by format arguments.
+ // This method supports printf(Locale, String, Object...) and
+ // printf(String, Object...)
+ public static void jsFunction_printf(Context cx, Scriptable thisObj,
+ Object[] args, Function funObj) {
+
+ if (args.length > 0) {
+
+ // the index of the next argument to consider
+ int nextIdx = 0;
+
+ // the local for printf
+ Locale locale = null;
+
+ if (args[nextIdx] instanceof Locale) {
+
+ // the Locale is the first argument, use it an increment idx
+ locale = (Locale) args[nextIdx];
+ nextIdx++;
+
+ } else {
+
+ // get the per-HTTP request local or the default locale
+ locale = ((ScriptablePrintWriter) thisObj).getLocale();
+ }
+
+ // only continue, if there is at least an other argument
+ // containing the format string
+ if (args.length > nextIdx) {
+
+ // the format string
+ String format = ScriptRuntime.toString(args[nextIdx]);
+
+ // arguments starting after that are formatting arguments
+ nextIdx++;
+ Object[] formatArgs = new Object[args.length - nextIdx];
+ System.arraycopy(args, nextIdx, formatArgs, 0,
+ formatArgs.length);
+
+ // now get the writer and call printf
+ PrintWriter writer = ((ScriptablePrintWriter) thisObj).writer;
+ writer.printf(locale, format, formatArgs);
+ }
+ }
+ }
+
+ // print args to the writer (if any) and append a line feed
+ // this method supports println(Object)
+ public static void jsFunction_println(Context cx, Scriptable thisObj,
+ Object[] args, Function funObj) {
+ print(thisObj, args).println();
+ }
+
+ // ---------- Wrapper interface
--------------------------------------------
+
+ // returns the wrapped print writer
+ public Object unwrap() {
+ return writer;
+ }
+
+ // ---------- internal helper
----------------------------------------------
+
+ // print all arguments as strings to the writer
+ private static PrintWriter print(Object thisObj, Object[] args) {
+ PrintWriter writer = ((ScriptablePrintWriter) thisObj).writer;
+ for (Object arg : args) {
+ writer.print(ScriptRuntime.toString(arg));
+ }
+ return writer;
+ }
+
+ // helper method to return the locale to use for this instance:
+ // - if the global scope has a "request" object which is a
+ // HttpServletRequest, we call getLocale() on that object
+ // - Otherwise or if getLocale returns null, we use the platform default
+ private Locale getLocale() {
+ if (locale == null) {
+
+ // check whether we have a request object which has the locale
+ Object reqObj = ScriptRuntime.name(Context.getCurrentContext(),
+ this, SlingBindings.REQUEST);
+ if (reqObj instanceof Wrapper) {
+ Object wrapped = ((Wrapper) reqObj).unwrap();
+ if (wrapped instanceof HttpServletRequest) {
+ locale = ((HttpServletRequest) wrapped).getLocale();
+ }
+ }
+
+ // default, if the no request locale or no request is available
+ if (locale == null) {
+ locale = Locale.getDefault();
+ }
+
+ }
+
+ return locale;
+ }
+}
