"""
Based entirely on Django's own ``setup.py``.
"""
import os
import sys
from distutils.command.install_data import install_data
from distutils.command.install import INSTALL_SCHEMES
from distutils.core import setup

class osx_install_data(install_data):
    # On MacOS, the platform-specific lib dir is /System/Library/Framework/Python/.../
    # which is wrong. Python 2.5 supplied with MacOS 10.5 has an Apple-specific fix
    # for this in distutils.command.install_data#306. It fixes install_lib but not
    # install_data, which is why we roll our own install_data class.

    def finalize_options(self):
        # By the time finalize_options is called, install.install_lib is set to the
        # fixed directory, so we set the installdir to install_lib. The
        # install_data class uses ('install_data', 'install_dir') instead.
        self.set_undefined_options('install', ('install_lib', 'install_dir'))
        install_data.finalize_options(self)

if sys.platform == "darwin":
    cmdclasses = {'install_data': osx_install_data}
else:
    cmdclasses = {'install_data': install_data}

def fullsplit(path, result=None):
    """
    Split a pathname into components (the opposite of os.path.join) in a
    platform-neutral way.
    """
    if result is None:
        result = []
    head, tail = os.path.split(path)
    if head == '':
        return [tail] + result
    if head == path:
        return result
    return fullsplit(head, [tail] + result)

# Tell distutils to put the data_files in platform-specific installation
# locations. See here for an explanation:
# http://groups.google.com/group/comp.lang.python/browse_thread/thread/35ec7b2fed36eaec/2105ee4d9e8042cb
for scheme in INSTALL_SCHEMES.values():
    scheme['data'] = scheme['purelib']

# Compile the list of packages available, because distutils doesn't have
# an easy way to do this.
packages, data_files = [], []
root_dir = os.path.dirname(__file__)
if root_dir != '':
    os.chdir(root_dir)
extensions_dir = 'django_extensions'

for dirpath, dirnames, filenames in os.walk(extensions_dir):
    # Ignore dirnames that start with '.'
    for i, dirname in enumerate(dirnames):
        if dirname.startswith('.'):
            del dirnames[i]
    if '__init__.py' in filenames:
        packages.append('.'.join(fullsplit(dirpath)))
    elif filenames:
        data_files.append([dirpath, [os.path.join(dirpath, f) for f in filenames]])

version = __import__('django_extensions').__version__

setup(
    name = 'django-extensions',
    version = version,
    description = "Extensions for Django",
    long_description = """django-extensions bundles several useful
additions for Django projects. See the project page for more information:
  http://code.google.com/p/django-command-extensions/""",
    author = 'Michael Trier',
    author_email = 'mtrier@gmail.com',
    url = 'http://code.google.com/p/django-command-extensions/',
    license = 'New BSD License',
    platforms = ['any'],
    packages = packages,
    cmdclass = cmdclasses,
    data_files = data_files,
    classifiers = ['Development Status :: 4 - Beta',
                   'Environment :: Web Environment',
                   'Framework :: Django',
                   'Intended Audience :: Developers',
                   'License :: OSI Approved :: BSD License',
                   'Operating System :: OS Independent',
                   'Programming Language :: Python',
                   'Topic :: Utilities'],
)

