The jnios module is a complete java/JNI implementation of the builtin python modules os and posix for use with version 1.0.3 and 1.1 of the JPython environment. The builtin errno module is also included in jnios.
jnios allows the original os.py and posixpath.py/ntpath.py/... from CPython, to run under JPython. The jnios module is not an attempt to implement os module functionality on top of the java platform, but is based on posixmodule.c from CPython 1.5.2 and contains exactly the same functions as the CPython os module with exactly the same semantics.
In effect you can import jnios and expect the complete set of function from the os module to be available.
fdopen() is now implemented and works. popen() is implemented but for some reason it fails to run on Windows NT. Remarks from some people (tim_one) who know Windows a lot better than I ever will, have led me to believe that a functional popen() on Win32 should not be expected.
jnios have been compiled on Windows NT 4.0 (with MS Visual C++ 5.0) and on linux (i386/g++) and solaris (sparc/gcc).
Experience with other platforms in the form of bug reports, patches and makefiles are very welcome.
os module.
This is achived by inserting the definition os:jnios.os into the
python.modules.builtin registry key in the registry file located in
root of the jpython installation.
python.modules.builtin = md5:org.python.modules.MD5Module, os:jnios.os
This step is not really required, but wil allow you to access jnios as the
default os module. The downside is that the pure java implementation of os that
is included with jpython, will no longer be available.
Even without changing the python.modules.builtin registry entry, jnios can always be
used like this
from jnios import os
c:\jpython JPython 1.1alpha2 on java1.2 Copyright 1997-1999 Corporation for National Research Initiatives >>> from jnios import os >>> dir(os) ['execle', 'O_TEXT', 'execv', 'lstat', 'close', 'chdir', 'altsep', '_exit', 'exe cvp', '__module__', 'rmdir', 'O_TRUNC', 'dup', 'open', '_Environ', 'putenv', 'ex ecl', 'utime', 'removedirs', 'fstat', 'times', 'execvpe', 'execlp', 'O_RDWR', 's ystem', 'O_WRONLY', 'read', 'curdir', 'O_BINARY', 'lseek', 'linesep', 'stat', 'e rror', 'pipe', 'umask', '_execvpe', '_notfound', 'execlpe', 'rename', 'sys', 'O_ EXCL', 'strerror', 'O_CREAT', 'listdir', 'chmod', 'O_APPEND', 'UserDict', 'paths ep', 'path', 'write', 'O_RDONLY', 'environ', 'sep', 'pardir', 'mkdir', 'dup2', ' remove', 'makedirs', 'renames', 'initModule', 'string', 'getcwd', 'unlink', 'def path', 'name', 'getpid', 'execve'] >>>
The configuration used in jnios is riped off CPython 1.5.2. So you have to have a working version of the Python 1.5.2 source distribution available on your platform. After running configure in the usual way, the generated config.h file must be copied to the jnios directory..
The config.h used with MS Visual C++ that comes with Python1.5.2 is included with jnios without any modifications. The posixmodule.h include file is stolen from the top of posixmodule.c.
* Copyright 1999 Finn Bock. * Permission to use, copy and distribute this software is hereby granted, * provided that the above copyright notice appear in all copies and that * both that copyright notice and this permission notice appear in supporting * documentation. * * No Warranty * The software is provided "as is" without warranty of any kind.
/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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/* POSIX module implementation */
/* This file is also used for Windows NT and MS-Win. In that case the module
actually calls itself 'nt', not 'posix', and a few functions are
either unimplemented or implemented differently. The source
assumes that for Windows NT, the macro 'MS_WIN32' is defined independent
of the compiler used. Different compilers define their own feature
test macro, e.g. '__BORLANDC__' or '_MSC_VER'. */
/* See also ../Dos/dosmodule.c */