#!/usr/bin/env python
"""SciPy: Scientific Library for Python

SciPy (pronounced "Sigh Pie") is open-source software for mathematics,
science, and engineering. The SciPy library
depends on NumPy, which provides convenient and fast N-dimensional
array manipulation. The SciPy library is built to work with NumPy
arrays, and provides many user-friendly and efficient numerical
routines such as routines for numerical integration and optimization.
Together, they run on all popular operating systems, are quick to
install, and are free of charge.  NumPy and SciPy are easy to use,
but powerful enough to be depended upon by some of the world's
leading scientists and engineers. If you need to manipulate
numbers on a computer and display or publish the results,
give SciPy a try!

"""

DOCLINES = __doc__.split("\n")

import os
import sys
import warnings
import subprocess
import shutil
import re

if sys.version_info[0] < 3:
    import __builtin__ as builtins
else:
    import builtins

CLASSIFIERS = """\
Development Status :: 4 - Beta
Intended Audience :: Science/Research
Intended Audience :: Developers
License :: OSI Approved
Programming Language :: C
Programming Language :: Python
Programming Language :: Python :: 3
Topic :: Software Development
Topic :: Scientific/Engineering
Operating System :: Microsoft :: Windows
Operating System :: POSIX
Operating System :: Unix
Operating System :: MacOS

"""

MAJOR               = 0
MINOR               = 10
MICRO               = 1
ISRELEASED          = True
VERSION             = '%d.%d.%d' % (MAJOR, MINOR, MICRO)


# Return the git revision as a string
def git_version():
    def _minimal_ext_cmd(cmd):
        # construct minimal environment
        env = {}
        for k in ['SYSTEMROOT', 'PATH']:
            v = os.environ.get(k)
            if v is not None:
                env[k] = v
        # LANGUAGE is used on win32
        env['LANGUAGE'] = 'C'
        env['LANG'] = 'C'
        env['LC_ALL'] = 'C'
        out = subprocess.Popen(cmd, stdout = subprocess.PIPE, env=env).communicate()[0]
        return out

    try:
        out = _minimal_ext_cmd(['git', 'rev-parse', 'HEAD'])
        GIT_REVISION = out.strip().decode('ascii')
    except OSError:
        GIT_REVISION = "Unknown"

    return GIT_REVISION


# BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
# update it when the contents of directories change.
if os.path.exists('MANIFEST'):
    os.remove('MANIFEST')

# This is a bit hackish: we are setting a global variable so that the main
# scipy __init__ can detect if it is being loaded by the setup routine, to
# avoid attempting to load components that aren't built yet.  While ugly, it's
# a lot more robust than what was previously being used.
builtins.__SCIPY_SETUP__ = True

def write_version_py(filename='scipy/version.py'):
    cnt = """
# THIS FILE IS GENERATED FROM SCIPY SETUP.PY
short_version = '%(version)s'
version = '%(version)s'
full_version = '%(full_version)s'
git_revision = '%(git_revision)s'
release = %(isrelease)s

if not release:
    version = full_version
"""
    # Adding the git rev number needs to be done inside
    # write_version_py(), otherwise the import of scipy.version messes
    # up the build under Python 3.
    FULLVERSION = VERSION
    if os.path.exists('.git'):
        GIT_REVISION = git_version()
    elif os.path.exists('scipy/version.py'):
        # must be a source distribution, use existing version file
        from scipy.version import git_revision as GIT_REVISION
    else:
        GIT_REVISION = "Unknown"

    if not ISRELEASED:
        FULLVERSION += '.dev-' + GIT_REVISION[:7]

    a = open(filename, 'w')
    try:
        a.write(cnt % {'version': VERSION,
                       'full_version' : FULLVERSION,
                       'git_revision' : GIT_REVISION,
                       'isrelease': str(ISRELEASED)})
    finally:
        a.close()


def configuration(parent_package='',top_path=None):
    from numpy.distutils.misc_util import Configuration
    config = Configuration(None, parent_package, top_path)
    config.set_options(ignore_setup_xxx_py=True,
                       assume_default_configuration=True,
                       delegate_options_to_subpackages=True,
                       quiet=True)

    config.add_subpackage('scipy')
    config.add_data_files(('scipy','*.txt'))

    config.get_version('scipy/version.py')

    return config


def setup_package():
    from numpy.distutils.core import setup

    old_path = os.getcwd()
    local_path = os.path.dirname(os.path.abspath(sys.argv[0]))
    src_path = local_path
    if sys.version_info[0] == 3:
        src_path = os.path.join(local_path, 'build', 'py3k')
        sys.path.insert(0, os.path.join(local_path, 'tools'))
        import py3tool
        print("Converting to Python3 via 2to3...")
        py3tool.sync_2to3('scipy', os.path.join(src_path, 'scipy'))

        site_cfg = os.path.join(local_path, 'site.cfg')
        if os.path.isfile(site_cfg):
            shutil.copy(site_cfg, src_path)

    os.chdir(local_path)
    sys.path.insert(0, local_path)
    sys.path.insert(0, os.path.join(local_path, 'scipy'))  # to retrieve version

    # Run build
    old_path = os.getcwd()
    os.chdir(src_path)
    sys.path.insert(0, src_path)

    # Rewrite the version file everytime
    write_version_py()

    try:
        setup(
            name = 'scipy',
            maintainer = "SciPy Developers",
            maintainer_email = "scipy-dev@scipy.org",
            description = DOCLINES[0],
            long_description = "\n".join(DOCLINES[2:]),
            url = "http://www.scipy.org",
            download_url = "http://sourceforge.net/project/showfiles.php?group_id=27747&package_id=19531",
            license = 'BSD',
            classifiers=[_f for _f in CLASSIFIERS.split('\n') if _f],
            platforms = ["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
            configuration=configuration )
    finally:
        del sys.path[0]
        os.chdir(old_path)

    return


if __name__ == '__main__':
    setup_package()

