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From Salikh Zakirov <Salikh.Zaki...@Intel.com>
Subject [tools] [patch] Modifications to harmony eclipse plugin to make it work with DRLVM
Date Tue, 01 Aug 2006 13:59:37 GMT
Hi,

I have been reviewing the DRLVM JIRA issues, and came across
HARMONY-699 "[DRLVM] modification to eclipse plugin should be applied to plugin itself"

So I took the hyplugin.patch from DRLVM distribution and applied the changes
to plugin source tree, taking into account, that DRLVM executable is no longer ij.exe,
but plain java.exe.

Then I have tried to run the modified plugin, and found out that it does not find
kernel jar files by default, because DRLVM does not provide some property file
(default location that is searched from is 'jre/bin/default/clearvm.properties',
which looks pretty similar to the default -vm -vmdir arguments of the launcher).
Anyway, DRLVM does not provide property files for kernel files 
(* and I personally do not like them *),
so I figured it would be reasonable to provide a reasonable default coded right
into the plugin code.

The resulting patch is provided below for review.
(HARMONY-699 has the same changes in two patches).

Could you please review the modifications and commit the changes if there are
no objections? This will allow to remove custom plugin build from DRLVM.

The plugin works okay on my Windows/ia32 laptop.

Thanks a lot!


--- /dev/null
+++ eclipse/org.apache.harmony.eclipse.jdt.launching/build.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!--
+    Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable.
+  
+    Licensed 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.
+-->
+<project name="hyplugin" default="build">
+
+    <target name="init">
+      <property name="build.dir" value="bin"/>
+      <property name="jar.name" value="${build.dir}/org.apache.harmony.eclipse.jdt.launching_1.0.0.jar"
/>
+    </target>
+
+    <target name="find.eclipse">
+
+      <property environment="env"/>
+      <available property="eclipse.home" value="${env.ECLIPSE_HOME}"
+	file="${env.ECLIPSE_HOME}/startup.jar"/>
+      <fail unless="eclipse.home">Error:
+	Can't find eclipse home.
+	Please set the environment variable ECLIPSE_HOME to Eclipse location
+	or pass it as the property -Declipse.home=...
+      </fail>
+
+      <path id="java.class.path">
+	<fileset dir="${java.home}" includes="**/*.jar" />
+	<fileset dir="${eclipse.home}" includes="**/*.jar" />
+      </path>
+
+    </target>
+
+    <target name="build" depends="init, find.eclipse">
+      <mkdir dir="${build.dir}"/>
+      <javac destdir="${build.dir}"
+	debug="yes"
+	classpathref="java.class.path"
+	srcdir="src"
+	includes="**/*.java"/>
+
+      <jar destfile="${jar.name}" manifest="META-INF/MANIFEST.MF">
+	<fileset dir="${build.dir}">
+	  <include name="**/*.class"/>
+	</fileset>
+	<fileset dir="src">
+	  <include name="**/*.properties"/>
+	</fileset>
+	<fileset dir="." includes="plugin.xml"/>
+      </jar>
+    </target>
+
+    <target name="clean" depends="init">
+      <delete dir="${build.dir}"/>
+    </target>
+
+    <target name="install" depends="init, find.eclipse">
+      <available file="${jar.name}" property="jar.built"/>
+      <fail unless="jar.built">
+	Can't find built jar file ${jar.name}. 
+	Please run 'ant build' first
+      </fail>
+      <copy file="${jar.name}" todir="${eclipse.home}/plugins"/>
+    </target>
+    
+</project>
diff --git eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLauncherMessages.java
eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLauncherMessages.java
old mode 100644
new mode 100755
index 645f92e..c49f850
--- eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLauncherMessages.java
+++ eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLauncherMessages.java
@@ -22,8 +22,14 @@ public class HyLauncherMessages {
 
 	private static final String RESOURCE_BUNDLE = "org.apache.harmony.eclipse.jdt.launching.HyLauncherMessages";
//$NON-NLS-1$
 
-	private static ResourceBundle resourceBundle = ResourceBundle
-			.getBundle(RESOURCE_BUNDLE);
+	private static ResourceBundle resourceBundle;
+	static {
+		try {
+			resourceBundle = ResourceBundle.getBundle(RESOURCE_BUNDLE);
+		} catch (MissingResourceException e) {
+			System.err.println("Can't load resource bundle " + RESOURCE_BUNDLE);
+		}
+	}
 
 	private HyLauncherMessages() {
 		super();
@@ -32,7 +38,7 @@ public class HyLauncherMessages {
 	public static String getString(String key) {
 		try {
 			return resourceBundle.getString(key);
-		} catch (MissingResourceException e) {
+		} catch (Exception e) {
 			return "!" + key + "!";//$NON-NLS-2$ //$NON-NLS-1$
 		}
 	}
diff --git eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLaunchingPlugin.java
eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLaunchingPlugin.java
index 495ac1e..bf77850 100644
--- eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLaunchingPlugin.java
+++ eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyLaunchingPlugin.java
@@ -65,6 +65,9 @@ public class HyLaunchingPlugin extends P
 	}
 
 	public static HyLaunchingPlugin getDefault() {
+        if (plugin == null) {
+            plugin = new HyLaunchingPlugin();
+        }
 		return plugin;
 	}
 
diff --git eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyVMInstallType.java
eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyVMInstallType.java
old mode 100644
new mode 100755
index 90364b8..c6dbf76
--- eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyVMInstallType.java
+++ eclipse/org.apache.harmony.eclipse.jdt.launching/src/org/apache/harmony/eclipse/jdt/launching/HyVMInstallType.java
@@ -91,9 +91,6 @@ public class HyVMInstallType extends Abs
 	 * @see org.eclipse.jdt.launching.IVMInstallType#detectInstallLocation()
 	 */
 	public File detectInstallLocation() {
-		// Try to detect wether the current VM is a Harmony installation.
-		if (!"clear".equals(System.getProperty("com.ibm.oti.configuration", "missing"))) //$NON-NLS-1$
//$NON-NLS-2$ //$NON-NLS-3$
-			return null;
 
 		File home = new File(System.getProperty("java.home")); //$NON-NLS-1$
 		IStatus status = validateInstallLocation(home);
@@ -345,9 +342,21 @@ public class HyVMInstallType extends Abs
 			kernelProperties.load(propsFile);
 			propsFile.close();
 		} catch (IOException ex) {
-			System.out
-					.println("Warning: could not open properties file " + propertyFile.getPath()); //$NON-NLS-1$
-			return null;
+			// Can't open VM-specific properties file, 
+			// fall back to hardcoded default of lib/boot/kernel.jar
+			List kernelLibraries = new ArrayList();
+			File libraryFile = new File(installLocation, 
+				"lib" + File.separator + "boot" + File.separator + "kernel.jar");
+			IPath libraryPath;
+			try {
+				libraryPath = new Path(libraryFile.getCanonicalPath());
+			} catch (IOException e) {
+				libraryPath = new Path(libraryFile.getPath());
+			}
+			LibraryLocation libLocation = 
+				new LibraryLocation(libraryPath, Path.EMPTY, Path.ROOT);
+			kernelLibraries.add(libLocation);
+			return kernelLibraries;
 		}
 		
 		// If we have a VME v1 style kernel (ie single kernel) then read its location


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