Re: PyReloc - BinReloc for python

"Jan Niklas Hasse" <[email protected]> Sat, 18 Aug 2007 23:10:01 +0200

Newsgroups	gmane.comp.autopackage.devel
Message-ID	<[email protected]>

2007/8/18, Isak Savo <[email protected]>:
>
> 2007/8/17, Jan Niklas Hasse <[email protected]>:
> > > 1) Is the __file__ variable always a full path? For all python
> > > versions/implementations?
> > >    - If not, it should be documented which versions are supported.
> > I'm sorry, i don't know and i couldn't find anything about it in the
> docs.
>
> Let's assume that it is then. If you could write a small test program,
> we could then test it on various machines. I have Python 2.4.4 and
> 2.5.1 on my system.


I've attached testreloc.py which just prints all variables.

> > 3) I see the source mentions a web address with more documentation
> > > about how to use it. Are you planning on writing this?
> > I just edited the header of binreloc. I could write a short doc, but
> > my english isn't good.
>
> That would be great. A few paragraphs with an example is enough. Me,
> (or taj or curtis who's both native English speaking) can correct it
> for spelling and grammar if needed. You don't need to do any special
> formatting to make it fit the web or something, I'll do that for you.
>
> Okay thanks! I've attached reloc.txt and also a new version of reloc.py(added EXE variable).

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reloc.py (text/x-python, 760 B)

# PyReloc - a library for creating relocatable python applications
# Written by: Jan Niklas Hasse <[email protected]>
# http://autopackage.org/
#
# This source code is public domain. You can relicense this code
# under whatever license you want.
#
# See http://autopackage.org/docs/pyreloc/ for
# more information and how to use this.

import os

EXE = __file__
EXEDIR = os.path.dirname(EXE)
PREFIX = os.path.normpath(os.path.join(EXEDIR, ".."))

BINDIR = os.path.join(PREFIX, "bin")
SBINDIR = os.path.join(PREFIX, "sbin")
DATADIR = os.path.join(PREFIX, "share")
LIBDIR = os.path.join(PREFIX, "lib")
LIBEXECDIR = os.path.join(PREFIX, "libexec")
ETCDIR = os.path.join(PREFIX, "etc")
BINDIR = os.path.join(PREFIX, "bin")

LOCALE = os.path.join(DATADIR, "locale")

reloc.txt (text/plain, 699 B)

Basic usage

Place the reloc.py file somewhere, where your python script can import it and then import it:

import reloc

Now you can use reloc to replace your paths. For example replace

glade = gtk.glade.XML('/usr/share/myproject/main.glade')

with

glade = gtk.glade.XML(os.path.join(reloc.DATADIR, 'myproject/main.glade'))

Other Variables are:

EXE         Path to your main python script (__file__).
EXEDIR      The directory of your python script.
PREFIX      The prefix, e.g. "/usr".
BINDIR      PREFIX + "/bin"
SBINDIR     PREFIX + "/sbin"
DATADIR     PREFIX + "/share"
LIBDIR      PREFIX + "/lib"
LIBEXECDIR  PREFIX + "/libexec"
ETCDIR      PREFIX + "/etc"
LOCALEDIR   DATADIR + "/locale"

testreloc.py (text/x-python, 249 B)

#!/usr/bin/env python

import reloc

print reloc.EXE
print reloc.EXEDIR
print reloc.PREFIX
print reloc.BINDIR
print reloc.SBINDIR
print reloc.DATADIR
print reloc.LIBDIR
print reloc.LIBEXECDIR
print reloc.ETCDIR
print reloc.BINDIR
print reloc.LOCALE