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From s...@apache.org
Subject svn commit: r1297288 - /commons/proper/net/trunk/src/main/java/examples/Main.java
Date Mon, 05 Mar 2012 23:45:16 GMT
Author: sebb
Date: Mon Mar  5 23:45:15 2012
New Revision: 1297288

URL: http://svn.apache.org/viewvc?rev=1297288&view=rev
Log:
Helper application for example classes

Added:
    commons/proper/net/trunk/src/main/java/examples/Main.java   (with props)

Added: commons/proper/net/trunk/src/main/java/examples/Main.java
URL: http://svn.apache.org/viewvc/commons/proper/net/trunk/src/main/java/examples/Main.java?rev=1297288&view=auto
==============================================================================
--- commons/proper/net/trunk/src/main/java/examples/Main.java (added)
+++ commons/proper/net/trunk/src/main/java/examples/Main.java Mon Mar  5 23:45:15 2012
@@ -0,0 +1,92 @@
+/*
+ * 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 examples;
+
+import java.lang.reflect.Method;
+import java.security.CodeSource;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public class Main {
+
+    /**
+     * Helper application for example classes.
+     * Lists available classes, and provides shorthand invocation.
+     * For example:<br/>
+     * <code>java -jar commons-net-examples-m.n.jar FTPClientExample -l host user password</code>
+     * 
+     * @param args the first argument is used to name the class; remaining arguments
+     * are passed to the target class.
+     * @throws Exception 
+     * @throws Exception 
+     */
+    public static void main(String[] args) throws Exception  {
+        if (args.length==0) {
+            System.out.println("Usage: java -jar examples.jar <exampleClass> <exampleClass
parameters>");
+        }
+        CodeSource codeSource = Main.class.getProtectionDomain().getCodeSource();
+        Map<String, String> map = new HashMap<String, String>();
+        if ( codeSource != null) {
+            final String sourceFile = codeSource.getLocation().getFile();
+            if (sourceFile.endsWith(".jar")) {
+                if (args.length==0) {
+                    System.out.println("\nClasses found in the jar:");
+                }
+                JarFile jf = new JarFile(sourceFile);
+                Enumeration<JarEntry> e = jf.entries();
+                while (e.hasMoreElements()) {
+                  JarEntry je = e.nextElement();
+                  String name = je.getName();
+                  if (!name.endsWith(".class") 
+                          || name.contains("$") // subclasses
+                          || name .equals("examples/util/IOUtil.class") // no main class
+                          || name.equals("examples/Main.class")) {
+                      continue;
+                  }
+                  name = name.replace(".class", "");
+                  int lastSep = name.lastIndexOf('/');
+                  String alias = name.substring(lastSep+1);
+                  if (args.length==0) {
+                      System.out.printf("%-25s %s%n",alias,name);
+                  }
+                  map.put(alias, name);
+                }
+            }
+        }
+
+        if (args.length==0) {
+            return;
+        }
+
+        String shortName = args[0];
+        String fullName = map.get(shortName);
+        if (fullName == null) {
+            fullName = shortName;
+        }
+        fullName = fullName.replace('/', '.');
+        Class<?> clazz = Class.forName(fullName);
+        Method m = clazz.getDeclaredMethod("main", new Class[]{args.getClass()});
+        String[] args2 = new String[args.length-1];
+        System.arraycopy(args, 1, args2, 0, args2.length);
+        m.invoke(null, (Object)args2);
+    }
+}

Propchange: commons/proper/net/trunk/src/main/java/examples/Main.java
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    svn:eol-style = native

Propchange: commons/proper/net/trunk/src/main/java/examples/Main.java
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    svn:keywords = Author Date Id Revision



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