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#! /bin/env python
"""
This script will return the paths that distutils will use for installing
a package. To use this script, execute it the same way that you would
execute setup.py, but instead of providing 'install' or 'build' as the
command, specify 'purelib' or 'platlib' and the corresponding path
will be printed. The 'purelib' command will print the install location
for .py files, while the 'platlib' command will print the install location
of binary modules (.so or .dll).
Written by David Gobbi, Feb 25, 2006.
"""
import string
import sys
import os
def get_install_path(command, *args):
"""Return the module install path, given the arguments that were
provided to setup.py. The paths that you can request are 'purelib'
for the .py installation directory and 'platlib' for the binary
module installation directory.
"""
# convert setup args into an option dictionary
options = {}
for arg in args:
if arg == '--':
break
if arg[0:2] == "--":
try:
option, value = string.split(arg,"=")
options[option] = value
except ValueError:
options[option] = 1
# check for the prefix and exec_prefix
try:
prefix = options["--prefix"]
except KeyError:
prefix = None
try:
exec_prefix = options["--exec-prefix"]
except KeyError:
exec_prefix = prefix
# if prefix or exec_prefix aren't set, use default system values
if prefix == None:
prefix = sys.prefix
if exec_prefix == None:
exec_prefix = sys.exec_prefix
# replace backslashes with slashes
if os.name != 'posix':
prefix = string.replace(prefix, os.sep, "/")
exec_prefix = string.replace(exec_prefix, os.sep, "/")
# get rid of trailing separator
if prefix != "" and prefix[-1] == "/":
prefix = prefix[0:-1]
if exec_prefix != "" and exec_prefix[-1] == "/":
exec_prefix = exec_prefix[0:-1]
# check for "home" install scheme
try:
home = options["--home"]
if os.name != 'posix':
home = string.replace(home, os.sep, "/")
if home != "" and home[-1] == "/":
home = home[0:-1]
except KeyError:
home = None
# apply "home" install scheme, but not for Windows with python < 2.4
# (distutils didn't allow home scheme for windows until 2.4)
if home != None and not (os.name != 'posix' and sys.version < '2.4'):
purelib = home+'/lib/python'
platlib = home+'/lib/python'
scripts = home+'/bin'
data = home
elif os.name == 'posix':
ver = sys.version[0:3]
purelib = prefix+'/lib/python'+ver+'/site-packages'
platlib = exec_prefix+'/lib/python'+ver+'/site-packages'
scripts = prefix+'/bin'
data = prefix
elif sys.version < '2.2':
purelib = prefix
platlib = prefix
scripts = prefix+'/Scripts'
data = prefix
else:
purelib = prefix+'/Lib/site-packages'
platlib = prefix+'/Lib/site-packages'
scripts = prefix+'/Scripts'
data = prefix
# allow direct setting of install directories
try:
purelib = options["--install-purelib"]
except KeyError:
pass
try:
platlib = options["--install-platlib"]
except KeyError:
pass
try:
scripts = options["--install-scripts"]
except KeyError:
pass
try:
data = options["--install-data"]
except KeyError:
pass
# return the information that was asked for
if command == 'purelib':
return purelib
elif command == 'platlib':
return platlib
elif command == 'scripts':
return scripts
elif command == 'data':
return data
if __name__ == "__main__":
print apply(get_install_path, sys.argv[1:])
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