[Jython-dev] Faking os.chdir

[Frederik De B. <fre...@pa...>]

Hi,

I am currently working on an open-source tool for programming 2D 
graphics. It is a learning environment where students can use an easy 
language (Python) to learn about programming and design.

The current version is written in Python itself and works only on Mac 
OS X; the new version is written in Java and is cross-platform, using 
Jython as a scripting layer, which works great.

There are some problems with chdir, however. For example, users can use 
the image() command with a path that is (normally) relative to the 
script file. In Python, I solved this by chdirring to the directory of 
the script, which is impossible in Jython; this breaks the open command 
as well, so users have to use absolute paths.

Since I read in the FAQ that chdir can't be supported because of JVM 
restrictions, I was thinking of faking it. Chdir is actually more of a 
state command anyway, so you could catch all uses (in os, os.path and 
the open command) and "inject" the current working directory.

I was wondering if there is interest to support this in Jython. I am 
willing to invest some time in finding out what exactly needs to be 
changed.

Kind regards,

Freeeeeeeeeeeeeeee