azure_bdist_wheel.py

"""
"wheel" copyright (c) 2012-2017 Daniel Holth <dholth@fastmail.fm> and
contributors.

The MIT License

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Create a Azure wheel (.whl) distribution (a wheel is a built archive format).

This file is a copy of the official bdist_wheel file from wheel 0.30.0a0, enhanced
of the bottom with some Microsoft extension for Azure SDK for Python

"""

import csv
import hashlib
import os
import subprocess
import warnings
import shutil
import json
import sys

try:
    import sysconfig
except ImportError:  # pragma nocover
    # Python < 2.7
    import distutils.sysconfig as sysconfig

import pkg_resources

safe_name = pkg_resources.safe_name
safe_version = pkg_resources.safe_version

from shutil import rmtree
from email.generator import Generator

from distutils.core import Command
from distutils.sysconfig import get_python_version

from distutils import log as logger

from wheel.pep425tags import get_abbr_impl, get_impl_ver, get_abi_tag, get_platform
from wheel.util import native, open_for_csv
from wheel.archive import archive_wheelfile
from wheel.pkginfo import read_pkg_info, write_pkg_info
from wheel.metadata import pkginfo_to_dict
from wheel import pep425tags, metadata
from wheel import __version__ as wheel_version

def safer_name(name):
    return safe_name(name).replace('-', '_')

def safer_version(version):
    return safe_version(version).replace('-', '_')

class bdist_wheel(Command):

    description = 'create a wheel distribution'

    user_options = [('bdist-dir=', 'b',
                     "temporary directory for creating the distribution"),
                    ('plat-name=', 'p',
                     "platform name to embed in generated filenames "
                     "(default: %s)" % get_platform()),
                    ('keep-temp', 'k',
                     "keep the pseudo-installation tree around after " +
                     "creating the distribution archive"),
                    ('dist-dir=', 'd',
                     "directory to put final built distributions in"),
                    ('skip-build', None,
                     "skip rebuilding everything (for testing/debugging)"),
                    ('relative', None,
                     "build the archive using relative paths"
                     "(default: false)"),
                    ('owner=', 'u',
                     "Owner name used when creating a tar file"
                     " [default: current user]"),
                    ('group=', 'g',
                     "Group name used when creating a tar file"
                     " [default: current group]"),
                    ('universal', None,
                     "make a universal wheel"
                     " (default: false)"),
                    ('python-tag=', None,
                     "Python implementation compatibility tag"
                     " (default: py%s)" % get_impl_ver()[0]),
                    ]

    boolean_options = ['keep-temp', 'skip-build', 'relative', 'universal']

    def initialize_options(self):
        self.bdist_dir = None
        self.data_dir = None
        self.plat_name = None
        self.plat_tag = None
        self.format = 'zip'
        self.keep_temp = False
        self.dist_dir = None
        self.distinfo_dir = None
        self.egginfo_dir = None
        self.root_is_pure = None
        self.skip_build = None
        self.relative = False
        self.owner = None
        self.group = None
        self.universal = False
        self.python_tag = 'py' + get_impl_ver()[0]
        self.plat_name_supplied = False

    def finalize_options(self):
        if self.bdist_dir is None:
            bdist_base = self.get_finalized_command('bdist').bdist_base
            self.bdist_dir = os.path.join(bdist_base, 'wheel')

        self.data_dir = self.wheel_dist_name + '.data'
        self.plat_name_supplied = self.plat_name is not None

        need_options = ('dist_dir', 'plat_name', 'skip_build')

        self.set_undefined_options('bdist',
                                   *zip(need_options, need_options))

        self.root_is_pure = not (self.distribution.has_ext_modules()
                                 or self.distribution.has_c_libraries())

        # Support legacy [wheel] section for setting universal
        wheel = self.distribution.get_option_dict('wheel')
        if 'universal' in wheel:
            # please don't define this in your global configs
            val = wheel['universal'][1].strip()
            if val.lower() in ('1', 'true', 'yes'):
                self.universal = True

    @property
    def wheel_dist_name(self):
        """Return distribution full name with - replaced with _"""
        return '-'.join((safer_name(self.distribution.get_name()),
                         safer_version(self.distribution.get_version())))

    def get_tag(self):
        # bdist sets self.plat_name if unset, we should only use it for purepy
        # wheels if the user supplied it.
        if self.plat_name_supplied:
            plat_name = self.plat_name
        elif self.root_is_pure:
            plat_name = 'any'
        else:
            plat_name = self.plat_name or get_platform()
            if plat_name in ('linux-x86_64', 'linux_x86_64') and sys.maxsize == 2147483647:
                plat_name = 'linux_i686'
        plat_name = plat_name.replace('-', '_').replace('.', '_')


        if self.root_is_pure:
            if self.universal:
                impl = 'py2.py3'
            else:
                impl = self.python_tag
            tag = (impl, 'none', plat_name)
        else:
            impl_name = get_abbr_impl()
            impl_ver = get_impl_ver()
            # PEP 3149
            abi_tag = str(get_abi_tag()).lower()
            tag = (impl_name + impl_ver, abi_tag, plat_name)
            supported_tags = pep425tags.get_supported(
                supplied_platform=plat_name if self.plat_name_supplied else None)
            # XXX switch to this alternate implementation for non-pure:
            assert tag == supported_tags[0], "%s != %s" % (tag, supported_tags[0])
        return tag

    def get_archive_basename(self):
        """Return archive name without extension"""

        impl_tag, abi_tag, plat_tag = self.get_tag()

        archive_basename = "%s-%s-%s-%s" % (
            self.wheel_dist_name,
            impl_tag,
            abi_tag,
            plat_tag)
        return archive_basename

    def run(self):
        build_scripts = self.reinitialize_command('build_scripts')
        build_scripts.executable = 'python'

        if not self.skip_build:
            self.run_command('build')

        install = self.reinitialize_command('install',
                                            reinit_subcommands=True)
        install.root = self.bdist_dir
        install.compile = False
        install.skip_build = self.skip_build
        install.warn_dir = False

        # A wheel without setuptools scripts is more cross-platform.
        # Use the (undocumented) `no_ep` option to setuptools'
        # install_scripts command to avoid creating entry point scripts.
        install_scripts = self.reinitialize_command('install_scripts')
        install_scripts.no_ep = True

        # Use a custom scheme for the archive, because we have to decide
        # at installation time which scheme to use.
        for key in ('headers', 'scripts', 'data', 'purelib', 'platlib'):
            setattr(install,
                    'install_' + key,
                    os.path.join(self.data_dir, key))

        basedir_observed = ''

        if os.name == 'nt':
            # win32 barfs if any of these are ''; could be '.'?
            # (distutils.command.install:change_roots bug)
            basedir_observed = os.path.normpath(os.path.join(self.data_dir, '..'))
            self.install_libbase = self.install_lib = basedir_observed

        setattr(install,
                'install_purelib' if self.root_is_pure else 'install_platlib',
                basedir_observed)

        logger.info("installing to %s", self.bdist_dir)

        self.run_command('install')

        archive_basename = self.get_archive_basename()

        pseudoinstall_root = os.path.join(self.dist_dir, archive_basename)
        if not self.relative:
            archive_root = self.bdist_dir
        else:
            archive_root = os.path.join(
                self.bdist_dir,
                self._ensure_relative(install.install_base))

        self.set_undefined_options(
            'install_egg_info', ('target', 'egginfo_dir'))
        self.distinfo_dir = os.path.join(self.bdist_dir,
                                         '%s.dist-info' % self.wheel_dist_name)
        self.egg2dist(self.egginfo_dir,
                      self.distinfo_dir)

        self.write_wheelfile(self.distinfo_dir)

        self.write_record(self.bdist_dir, self.distinfo_dir)

        # Make the archive
        if not os.path.exists(self.dist_dir):
            os.makedirs(self.dist_dir)
        wheel_name = archive_wheelfile(pseudoinstall_root, archive_root)

        # Sign the archive
        if 'WHEEL_TOOL' in os.environ:
            subprocess.call([os.environ['WHEEL_TOOL'], 'sign', wheel_name])

        # Add to 'Distribution.dist_files' so that the "upload" command works
        getattr(self.distribution, 'dist_files', []).append(
            ('bdist_wheel', get_python_version(), wheel_name))

        if not self.keep_temp:
            if self.dry_run:
                logger.info('removing %s', self.bdist_dir)
            else:
                rmtree(self.bdist_dir)

    def write_wheelfile(self, wheelfile_base, generator='bdist_wheel (' + wheel_version + ')'):
        from email.message import Message
        msg = Message()
        msg['Wheel-Version'] = '1.0'  # of the spec
        msg['Generator'] = generator
        msg['Root-Is-Purelib'] = str(self.root_is_pure).lower()

        # Doesn't work for bdist_wininst
        impl_tag, abi_tag, plat_tag = self.get_tag()
        for impl in impl_tag.split('.'):
            for abi in abi_tag.split('.'):
                for plat in plat_tag.split('.'):
                    msg['Tag'] = '-'.join((impl, abi, plat))

        wheelfile_path = os.path.join(wheelfile_base, 'WHEEL')
        logger.info('creating %s', wheelfile_path)
        with open(wheelfile_path, 'w') as f:
            Generator(f, maxheaderlen=0).flatten(msg)

    def _ensure_relative(self, path):
        # copied from dir_util, deleted
        drive, path = os.path.splitdrive(path)
        if path[0:1] == os.sep:
            path = drive + path[1:]
        return path

    def _pkginfo_to_metadata(self, egg_info_path, pkginfo_path):
        return metadata.pkginfo_to_metadata(egg_info_path, pkginfo_path)

    def license_file(self):
        """Return license filename from a license-file key in setup.cfg, or None."""
        metadata = self.distribution.get_option_dict('metadata')
        if not 'license_file' in metadata:
            return None
        return metadata['license_file'][1]

    def setupcfg_requirements(self):
        """Generate requirements from setup.cfg as
        ('Requires-Dist', 'requirement; qualifier') tuples. From a metadata
        section in setup.cfg:

        [metadata]
        provides-extra = extra1
            extra2
        requires-dist = requirement; qualifier
            another; qualifier2
            unqualified

        Yields

        ('Provides-Extra', 'extra1'),
        ('Provides-Extra', 'extra2'),
        ('Requires-Dist', 'requirement; qualifier'),
        ('Requires-Dist', 'another; qualifier2'),
        ('Requires-Dist', 'unqualified')
        """
        metadata = self.distribution.get_option_dict('metadata')

        # our .ini parser folds - to _ in key names:
        for key, title in (('provides_extra', 'Provides-Extra'),
                           ('requires_dist', 'Requires-Dist')):
            if not key in metadata:
                continue
            field = metadata[key]
            for line in field[1].splitlines():
                line = line.strip()
                if not line:
                    continue
                yield (title, line)

    def add_requirements(self, metadata_path):
        """Add additional requirements from setup.cfg to file metadata_path"""
        additional = list(self.setupcfg_requirements())
        if not additional: return
        pkg_info = read_pkg_info(metadata_path)
        if 'Provides-Extra' in pkg_info or 'Requires-Dist' in pkg_info:
            warnings.warn('setup.cfg requirements overwrite values from setup.py')
            del pkg_info['Provides-Extra']
            del pkg_info['Requires-Dist']
        for k, v in additional:
            pkg_info[k] = v
        write_pkg_info(metadata_path, pkg_info)

    def egg2dist(self, egginfo_path, distinfo_path):
        """Convert an .egg-info directory into a .dist-info directory"""
        def adios(p):
            """Appropriately delete directory, file or link."""
            if os.path.exists(p) and not os.path.islink(p) and os.path.isdir(p):
                shutil.rmtree(p)
            elif os.path.exists(p):
                os.unlink(p)

        adios(distinfo_path)

        if not os.path.exists(egginfo_path):
            # There is no egg-info. This is probably because the egg-info
            # file/directory is not named matching the distribution name used
            # to name the archive file. Check for this case and report
            # accordingly.
            import glob
            pat = os.path.join(os.path.dirname(egginfo_path), '*.egg-info')
            possible = glob.glob(pat)
            err = "Egg metadata expected at %s but not found" % (egginfo_path,)
            if possible:
                alt = os.path.basename(possible[0])
                err += " (%s found - possible misnamed archive file?)" % (alt,)

            raise ValueError(err)

        if os.path.isfile(egginfo_path):
            # .egg-info is a single file
            pkginfo_path = egginfo_path
            pkg_info = self._pkginfo_to_metadata(egginfo_path, egginfo_path)
            os.mkdir(distinfo_path)
        else:
            # .egg-info is a directory
            pkginfo_path = os.path.join(egginfo_path, 'PKG-INFO')
            pkg_info = self._pkginfo_to_metadata(egginfo_path, pkginfo_path)

            # ignore common egg metadata that is useless to wheel
            shutil.copytree(egginfo_path, distinfo_path,
                            ignore=lambda x, y: set(('PKG-INFO',
                                                     'requires.txt',
                                                     'SOURCES.txt',
                                                     'not-zip-safe',)))

            # delete dependency_links if it is only whitespace
            dependency_links_path = os.path.join(distinfo_path, 'dependency_links.txt')
            with open(dependency_links_path, 'r') as dependency_links_file:
                dependency_links = dependency_links_file.read().strip()
            if not dependency_links:
                adios(dependency_links_path)

        write_pkg_info(os.path.join(distinfo_path, 'METADATA'), pkg_info)

        # XXX deprecated. Still useful for current distribute/setuptools.
        metadata_path = os.path.join(distinfo_path, 'METADATA')
        self.add_requirements(metadata_path)

        # XXX intentionally a different path than the PEP.
        metadata_json_path = os.path.join(distinfo_path, 'metadata.json')
        pymeta = pkginfo_to_dict(metadata_path,
                                 distribution=self.distribution)

        if 'description' in pymeta:
            description_filename = 'DESCRIPTION.rst'
            description_text = pymeta.pop('description')
            description_path = os.path.join(distinfo_path,
                                            description_filename)
            with open(description_path, "wb") as description_file:
                description_file.write(description_text.encode('utf-8'))
            pymeta['extensions']['python.details']['document_names']['description'] = description_filename

        # XXX heuristically copy any LICENSE/LICENSE.txt?
        license = self.license_file()
        if license:
            license_filename = 'LICENSE.txt'
            shutil.copy(license, os.path.join(self.distinfo_dir, license_filename))
            pymeta['extensions']['python.details']['document_names']['license'] = license_filename

        with open(metadata_json_path, "w") as metadata_json:
            json.dump(pymeta, metadata_json, sort_keys=True)

        adios(egginfo_path)

    def write_record(self, bdist_dir, distinfo_dir):
        from wheel.util import urlsafe_b64encode

        record_path = os.path.join(distinfo_dir, 'RECORD')
        record_relpath = os.path.relpath(record_path, bdist_dir)

        def walk():
            for dir, dirs, files in os.walk(bdist_dir):
                dirs.sort()
                for f in sorted(files):
                    yield os.path.join(dir, f)

        def skip(path):
            """Wheel hashes every possible file."""
            return (path == record_relpath)

        with open_for_csv(record_path, 'w+') as record_file:
            writer = csv.writer(record_file)
            for path in walk():
                relpath = os.path.relpath(path, bdist_dir)
                if skip(relpath):
                    hash = ''
                    size = ''
                else:
                    with open(path, 'rb') as f:
                        data = f.read()
                    digest = hashlib.sha256(data).digest()
                    hash = 'sha256=' + native(urlsafe_b64encode(digest))
                    size = len(data)
                record_path = os.path.relpath(
                    path, bdist_dir).replace(os.path.sep, '/')
                writer.writerow((record_path, hash, size))


#-------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
#--------------------------------------------------------------------------

from distutils import log as logger
import os.path

#from wheel.bdist_wheel import bdist_wheel
class azure_bdist_wheel(bdist_wheel):

    description = "Create an Azure wheel distribution"

    user_options = bdist_wheel.user_options + \
        [('azure-namespace-package=', None,
            "Name of the deepest nspkg used")]

    def initialize_options(self):
        bdist_wheel.initialize_options(self)
        self.azure_namespace_package = None

    def finalize_options(self):
        bdist_wheel.finalize_options(self)
        if self.azure_namespace_package and not self.azure_namespace_package.endswith("-nspkg"):
            raise ValueError("azure_namespace_package must finish by -nspkg")

    def run(self):
        if not self.distribution.install_requires:
            self.distribution.install_requires = []
        self.distribution.install_requires.append(
            "{}>=2.0.0".format(self.azure_namespace_package))
        bdist_wheel.run(self)

    def write_record(self, bdist_dir, distinfo_dir):
        if self.azure_namespace_package:
            # Split and remove last part, assuming it's "nspkg"
            subparts = self.azure_namespace_package.split('-')[0:-1]
        folder_with_init = [os.path.join(*subparts[0:i+1]) for i in range(len(subparts))]
        for azure_sub_package in folder_with_init:
            init_file = os.path.join(bdist_dir, azure_sub_package, '__init__.py')
            if os.path.isfile(init_file):
                logger.info("manually remove {} while building the wheel".format(init_file))
                os.remove(init_file)
            else:
                raise ValueError("Unable to find {}. Are you sure of your namespace package?".format(init_file))
        bdist_wheel.write_record(self, bdist_dir, distinfo_dir)
cmdclass = {
    'bdist_wheel': azure_bdist_wheel,
}