[Jython-users] jython on WinCE/iPaq update

[Brian Z. <bri...@ya...>]

Hi all,

About two months ago I experimented with jython on WinCE/iPaq and had some
success, now VAME (IBM visual age micro edition) has released 1.4 (== 1.3.0
jvm), so I tried the new version.

Good news is I don't have to copy Sun's rt.jar, and pystone shows an
improvement from 48 to 52. But adding \vame1.4\lib\jclMax\classes.zip to the
classpath option does not work, I have to work around by using a 9M
extracted .class tree.

Here's the updated instruction:

1. download from http://www.embedded.oti.com/ "runtime for ARM PocketPC" and
"custom config"
2. install the runtime, extract the zip file and copy to pocketpc under
\vame1.4
3. install the "custom config", copy lib\jclMax to pocketpc \vame1.4\lib
4. download jython2.1a3 from http://www.jython.org , copy \jython-2.1a3 to
pocketpc \jython-2.1a3
5. extract lib\jclMax\classes.zip and copy all subdir/files to pocketpc
\vame1.4\lib\classes
6. create a shortcut RunJython.lnk using the following 4 lines concated (on
a single line seperated by " ") on your desktop PC and copy it to your
pocketpc (-cp:classpath, -bp:bootstrap):
132#"\vame1.4\j9.exe"
 "-bp:\vame1.4\lib\jclMax\classes.zip"
 "-cp:\vame1.4\lib\classes;\jython-2.1a1\jython.jar"
 "org.python.util.jython"

Here's the part I hope someone can give me some insight, I want to know why
classes.zip cannot be in classpath:

1. If I leave the classpath as "-cp:\jython-2.1a1\jython.jar", I can launch
jython fine, do all the python stuff, while "import java" shows "no module
named java"
2. If I use "-cp:\vame1.4\lib\jclMax\classes.zip;\jython-2.1a1\jython.jar",
I got error message:
*sys-package-mgr*: processing new jar, '\vame1.4\lib\jclMax\classes.zip'
java.lang.IndexOutOfBoundsException

Stack trace:
   java/lang/Throwable.<init>()V
   java/lang/Throwable.<init>(Ljava/lang/String;)V
   java/lang/IndexOutOfBoundsException.<init>(Ljava/lang/String;)V
   java/util/zip/ZipInputStream.read([BII)I
   java/util/zip/ZipInputStream.skip(J)J
   java/io/DataInputStream.skipBytes(I)I
   org/python/core/PackageManager.checkAccess(Ljava/io/InputStream;)I

org/python/core/CachedJarsPackageManager.addZipEntry(Ljava/util/Hashtable;Lj
ava/util/zip/ZipEntry;Ljava/util/zip/ZipInputStream;)V

org/python/core/CachedJarsPackageManager.getZipPackages(Ljava/io/InputStream
;)Ljava/util/Hashtable;

org/python/core/CachedJarsPackageManager.addJarToPackages(Ljava/net/URL;Ljav
a/io/File;Z)V

org/python/core/CachedJarsPackageManager.addJarToPackages(Ljava/io/File;Z)V
   org/python/core/PathPackageManager.addClassPath(Ljava/lang/String;)V

org/python/core/SysPackageManager.findAllPackages(Ljava/util/Properties;)V

org/python/core/SysPackageManager.<init>(Ljava/io/File;Ljava/util/Properties
;)V
   org/python/core/PySystemState.initPackages(Ljava/util/Properties;)V

org/python/core/PySystemState.initialize(Ljava/util/Properties;Ljava/util/Pr
operties;[Ljava/lang/String;Ljava/lang/ClassLoader;)V

org/python/core/PySystemState.initialize(Ljava/util/Properties;Ljava/util/Pr
operties;[Ljava/lang/String;)V
   org/python/util/jython.main([Ljava/lang/String;)V

3. As mentioned, extract classes.zip to directory and add directory to -cp
works fine.
4. I also tried to jar classes/ directory into a classes.jar but that caused
jython to complain "skip bad jar"

Anyone has any idea the cause, or what to do further? I mean it works ok
right now, except I have to live with this 9M .class tree on a handheld.

Thanks for any help or suggestions,

-Brian