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#!/usr/bin/python
# Author: Rob Cakebread - pythonhead \@ gentoo.org
# Distributed under the terms of the GNU General Public License v2
"""
This utility lists versions of wxPython you have installed.
It also lets you set the default wxPython version apps will use.
The naming convention used is:
wx-{WX_GTK_VER}-{ENCODING}
Examples:
wx-2.4.2-gtk2-ansi
wx-2.4.2-gtk2-unicode
wx-2.5.3-gtk
It is strongly suggested you use a 2.4* version as the system default
because most stable wxPython applications are known to work with it.
Applications that only work with 2.5* can use this code to
select 2.5*
import wxversion
wxversion.select("2.5")
import wx
See this documentation for more info if you're a wxPython developer:
http://wiki.wxpython.org/index.cgi/MultiVersionInstalls
"""
import os
import sys
import optparse
PYVER = sys.version[0:3]
SITE_PKGS = "/usr/lib/python%s/site-packages" % PYVER
ENCODINGS = ["gtk2-ansi", "gtk2-unicode", "gtk-ansi"]
WX_VERSIONS = ["2.4.2", "2.5.3"]
def versions_installed():
"""Return list of installed wxPython versions"""
installed = []
for v in WX_VERSIONS:
i = 0
for e in ENCODINGS:
ver = "wx-%s-%s" % (v, ENCODINGS[i])
if version_exists(ver):
installed.append(ver)
i += 1
return installed
def get_default():
"""Return version of system default wxPython"""
wxpath = "%s/wx.pth" % SITE_PKGS
if not os.path.exists(wxpath):
return None
try:
return open(wxpath, "r").read().strip()
except:
return None
def print_installed():
"""Print list of wxPython versions installed"""
default = get_default()
all = versions_installed()
print "\nYou have these versions of wxPython installed:\n"
for v in all:
if v == default:
print v, "(System default)"
else:
print v
def version_exists(version):
"""Returns True if version of wxPython is installed"""
if os.path.exists(os.path.join(SITE_PKGS, version)):
return True
def set_default(version):
"""Sets default wxPython version"""
if os.getuid() != 0:
print "!!! ERROR - You must be root to change the default wxPython version."
sys.exit(1)
if version_exists(version):
try:
open(os.path.join(SITE_PKGS, "wx.pth"), "w").write(version)
except:
print "!!! ERROR - Failed to set %s as default wxPython version" % version
sys.exit(1)
else:
print "!!! ERROR - Version %s is not installed." % version
sys.exit(1)
if __name__ == "__main__":
optParser = optparse.OptionParser()
optParser.add_option( "-s", action="store", dest="version", type="string",
help="Set default wxPython version")
optParser.add_option( "-l", action="store_true", dest="list",
help="List all wxPython versions installed.")
(options, remainingArgs) = optParser.parse_args()
if len(sys.argv) == 1:
optParser.print_help()
sys.exit(1)
if options.list:
print_installed()
sys.exit()
if options.version:
set_default(options.version)
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