#!/usr/bin/env python
"""NumPy: array processing for numbers, strings, records, and objects.

NumPy is a general-purpose array-processing package designed to
efficiently manipulate large multi-dimensional arrays of arbitrary
records without sacrificing too much speed for small multi-dimensional
arrays.  NumPy is built on the Numeric code base and adds features
introduced by numarray as well as an extended C-API and the ability to
create arrays of arbitrary type which also makes NumPy suitable for
interfacing with general-purpose data-base applications.

There are also basic facilities for discrete fourier transform,
basic linear algebra and random number generation.
"""

DOCLINES = __doc__.split("\n")

import os
import shutil
import sys
import re
import subprocess

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

CLASSIFIERS = """\
Development Status :: 5 - Production/Stable
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
"""

NAME                = 'numpy'
MAINTAINER          = "NumPy Developers"
MAINTAINER_EMAIL    = "numpy-discussion@scipy.org"
DESCRIPTION         = DOCLINES[0]
LONG_DESCRIPTION    = "\n".join(DOCLINES[2:])
URL                 = "http://www.numpy.org"
DOWNLOAD_URL        = "http://sourceforge.net/projects/numpy/files/NumPy/"
LICENSE             = 'BSD'
CLASSIFIERS         = filter(None, CLASSIFIERS.split('\n'))
AUTHOR              = "Travis E. Oliphant et al."
AUTHOR_EMAIL        = "oliphant@enthought.com"
PLATFORMS           = ["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"]
MAJOR               = 1
MINOR               = 8
MICRO               = 0
ISRELEASED          = False
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
# numpy __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.__NUMPY_SETUP__ = True


def write_version_py(filename='numpy/version.py'):
    cnt = """
# THIS FILE IS GENERATED FROM NUMPY 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 numpy.version messes up the build under Python 3.
    FULLVERSION = VERSION
    if os.path.exists('.git'):
        GIT_REVISION = git_version()
    elif os.path.exists('numpy/version.py'):
        # must be a source distribution, use existing version file
        try:
            from numpy.version import git_revision as GIT_REVISION
        except ImportError:
            raise ImportError("Unable to import git_revision. Try removing " \
                              "numpy/version.py and the build directory " \
                              "before building.")
    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('numpy')

    config.get_version('numpy/version.py') # sets config.version

    return config

def setup_package():

    # Perform 2to3 if needed
    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('numpy', os.path.join(src_path, 'numpy'))

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

        # Ugly hack to make pip work with Python 3, see #1857.
        # Explanation: pip messes with __file__ which interacts badly with the
        # change in directory due to the 2to3 conversion.  Therefore we restore
        # __file__ to what it would have been otherwise.
        global __file__
        __file__ = os.path.join(os.curdir, os.path.basename(__file__))
        if '--egg-base' in sys.argv:
            # Change pip-egg-info entry to absolute path, so pip can find it
            # after changing directory.
            idx = sys.argv.index('--egg-base')
            if sys.argv[idx + 1] == 'pip-egg-info':
                sys.argv[idx + 1] = os.path.join(local_path, 'pip-egg-info')

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

    # Rewrite the version file everytime
    write_version_py()

    # Run build
    from numpy.distutils.core import setup

    try:
        setup(
            name=NAME,
            maintainer=MAINTAINER,
            maintainer_email=MAINTAINER_EMAIL,
            description=DESCRIPTION,
            long_description=LONG_DESCRIPTION,
            url=URL,
            download_url=DOWNLOAD_URL,
            license=LICENSE,
            classifiers=CLASSIFIERS,
            author=AUTHOR,
            author_email=AUTHOR_EMAIL,
            platforms=PLATFORMS,
            configuration=configuration )
    finally:
        del sys.path[0]
        os.chdir(old_path)
    return

if __name__ == '__main__':
    setup_package()
