# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1364214513 -3600
# Node ID 6a3a063b6eb16e06fc6c8dceb188364f9b543eca
# Parent  32eb44c74e1e18709101f5ff9cec98a5fb431043
One can specify --obfuscationlevel when invoking the bck2brwsr compiler from command line. Forking external Java when calling into the compiler to prevent "out of perm gem" errors.

diff -r 32eb44c74e1e -r 6a3a063b6eb1 rt/vm/pom.xml
--- a/rt/vm/pom.xml	Mon Mar 25 12:47:25 2013 +0100
+++ b/rt/vm/pom.xml	Mon Mar 25 13:28:33 2013 +0100
@@ -84,14 +84,19 @@
                      <id>generate-js</id>
                      <phase>process-classes</phase>
                      <configuration>
-                        <mainClass>org.apidesign.vm4brwsr.Main</mainClass>
+                         <executable>java</executable>
                         <arguments>
+                            <argument>-cp</argument>
+                            <classpath/>
+                            <argument>org.apidesign.vm4brwsr.Main</argument>
+                            <argument>--obfuscatelevel</argument>
+                            <argument>MINIMAL</argument>
                             <argument>${project.build.directory}/bck2brwsr.js</argument>
                             <argument>org/apidesign/vm4brwsr/Bck2Brwsr</argument>
                         </arguments>
                      </configuration>
                      <goals>
-                         <goal>java</goal>
+                         <goal>exec</goal>
                      </goals>
                  </execution>
              </executions>
diff -r 32eb44c74e1e -r 6a3a063b6eb1 rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java	Mon Mar 25 12:47:25 2013 +0100
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/Main.java	Mon Mar 25 13:28:33 2013 +0100
@@ -31,20 +31,62 @@
     private Main() {}
     
     public static void main(String... args) throws IOException {
+        final String obfuscate = "--obfuscatelevel";
+        
         if (args.length < 2) {
             System.err.println("Bck2Brwsr Translator from Java(tm) to JavaScript, (c) Jaroslav Tulach 2012");
-            System.err.println("Usage: java -cp ... -jar ... <file_to_generate_js_code_to> java/lang/Class org/your/App ...");
-            return;
+            System.err.println("Usage: java -cp ... -jar ... [");
+            System.err.print(obfuscate);
+            System.err.print(" [");
+            boolean first = true;
+            for (ObfuscationLevel l : ObfuscationLevel.values()) {
+                if (!first) {
+                    System.err.print('|');
+                }
+                System.err.print(l.name());
+                first = false;
+            }
+                
+            System.err.println("] <file_to_generate_js_code_to> java/lang/Class org/your/App ...");
+            System.exit(9);
         }
         
-        Writer w = new BufferedWriter(new FileWriter(args[0]));
-        StringArray classes = StringArray.asList(args);
-        classes.delete(0);
-        try {
-            Bck2Brwsr.generate(w, Main.class.getClassLoader(),
-                               classes.toArray());
-        } finally {
-            w.close();
+        ObfuscationLevel obfLevel = ObfuscationLevel.NONE;
+        StringArray classes = new StringArray();
+        String generateTo = null;
+        for (int i = 0; i < args.length; i++) {
+            if (obfuscate.equals(args[i])) { // NOI18N
+                i++;
+                try {
+                    obfLevel = ObfuscationLevel.valueOf(args[i]);
+                } catch (Exception e) {
+                    System.err.print(obfuscate);
+                    System.err.print(" parameter needs to be followed by one of ");
+                    boolean first = true;
+                    for (ObfuscationLevel l : ObfuscationLevel.values()) {
+                        if (!first) {
+                            System.err.print(", ");
+                        }
+                        System.err.print(l.name());
+                        first = false;
+                    }
+                    System.err.println();
+                    System.exit(1);
+                }
+                continue;
+            }
+            if (generateTo == null) {
+                generateTo = args[i];
+            } else {
+                classes = classes.addAndNew(args[i]);
+            }
+        }
+        try (Writer w = new BufferedWriter(new FileWriter(generateTo))) {
+            Bck2Brwsr.newCompiler().
+                obfuscation(obfLevel).
+                addRootClasses(classes.toArray()).
+                resources(Main.class.getClassLoader()).
+                generate(w);
         }
     }
 }