GlueGen (Compile Time): Add 'CStruct' Annotation Processor (APT) to 'gluegen' C Structs on-the-fly (2-pass actually).

Convenient annotation processing (APT) hooked to 'javac' (1.6) via gluegen.jar META-INF
service provider 'javax.annotation.processing.Processor' -> 'com.jogamp.gluegen.structgen.CStructAnnotationProcessor'.

Am implicit APT / JAVAC would be possible, however - to have a proper process
the unit test utilizes an explicit 2 pass run:

        <!-- Annotation Processor Only - First -->
        <javac destdir="${build_t.java}">
            <classpath refid="junit.compile.classpath"/>
            <compilerarg value="-proc:only"/>
            <compilerarg value="-J-Djogamp.gluegen.structgen.debug"/>
            <compilerarg value="-J-Djogamp.gluegen.structgen.output=${build_t.gen}/classes"/>
            <src path="${test.base.dir}/com/jogamp/gluegen/test/junit/structgen"/>
        </javac>

        <!-- Javac Only - Second -->
        <javac destdir="${build_t.java}">
            <classpath refid="junit.compile.classpath"/>
            <compilerarg value="-proc:none"/>
            <src path="${test.base.dir}"/>
            <src path="${build_t.gen}" />
        </javac>

Original code from Michael Bien's 'superglue' git://github.com/mbien/superglue.git,
finally merged to GlueGen (as once intended).

Note: The APT javac pass requires to use 'gluegen.jar' instead of 'gluegen-rt.jar' !
      The 2-pass process also alows using the runtime gluegen-rt.jar and hence ensures
      clean namespace check at compilation.

1 files changed, 12 insertions, 6 deletions

diff --git a/src/java/com/jogamp/gluegen/JavaEmitter.java b/src/java/com/jogamp/gluegen/JavaEmitter.java
index 1a6c313..18b2636 100644
--- a/src/java/com/jogamp/gluegen/JavaEmitter.java
+++ b/src/java/com/jogamp/gluegen/JavaEmitter.java
@@ -811,14 +811,14 @@ public class JavaEmitter implements GlueEmitter {
       writer = openFile(
         cfg.javaOutputDir() + File.separator +
         CodeGenUtils.packageAsPath(structClassPkg) +
-        File.separator + containingTypeName + ".java");
+        File.separator + containingTypeName + ".java", containingTypeName);
       CodeGenUtils.emitAutogeneratedWarning(writer, this);
       if (needsNativeCode) {
         String nRoot = cfg.nativeOutputDir();
         if (cfg.nativeOutputUsesJavaHierarchy()) {
           nRoot += File.separator + CodeGenUtils.packageAsPath(cfg.packageName());
         }
-        newWriter = openFile(nRoot + File.separator + containingTypeName + "_JNI.c");
+        newWriter = openFile(nRoot + File.separator + containingTypeName + "_JNI.c", containingTypeName);
         CodeGenUtils.emitAutogeneratedWarning(newWriter, this);
         emitCHeader(newWriter, containingTypeName);
       }
@@ -1379,7 +1379,13 @@ public class JavaEmitter implements GlueEmitter {
     return layout;
   }
 
-  protected PrintWriter openFile(String filename) throws IOException {
+  /**
+   * @param filename the class's full filename to open w/ write access
+   * @param simpleClassName the simple class name, i.e. w/o package name
+   * @return a {@link PrintWriter} instance to write the class source file
+   * @throws IOException
+   */
+  protected PrintWriter openFile(String filename, String simpleClassName) throws IOException {
     //System.out.println("Trying to open: " + filename);
     File file = new File(filename);
     String parentDir = file.getParent();
@@ -1432,13 +1438,13 @@ public class JavaEmitter implements GlueEmitter {
     }
 
     if (cfg.allStatic() || cfg.emitInterface()) {
-      javaWriter = openFile(jRoot + File.separator + cfg.className() + ".java");
+      javaWriter = openFile(jRoot + File.separator + cfg.className() + ".java", cfg.className());
     }
     if (!cfg.allStatic() && cfg.emitImpl()) {
-      javaImplWriter = openFile(jImplRoot + File.separator + cfg.implClassName() + ".java");
+      javaImplWriter = openFile(jImplRoot + File.separator + cfg.implClassName() + ".java", cfg.implClassName());
     }
     if (cfg.emitImpl()) {
-      cWriter = openFile(nRoot + File.separator + cfg.implClassName() + "_JNI.c");
+      cWriter = openFile(nRoot + File.separator + cfg.implClassName() + "_JNI.c", cfg.implClassName());
     }
 
     if (javaWriter != null) {