Quelle setup.py Sprache: Python

NAME = 'PyYAML'
VERSION = '6.0.1'
DESCRIPTION = "YAML parser and emitter for Python"
LONG_DESCRIPTION = """\
YAML is a data serialization format designed for human readability
and interaction with scripting languages.  PyYAML is a YAML parser
and emitter for Python.

PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
support, capable extension API, and sensible error messages.  PyYAML
supports standard YAML tags and provides Python-specific tags that
allow to represent an arbitrary Python object.

PyYAML is applicable for a broad range of tasks from complex
configuration files to object serialization and persistence."""
AUTHOR = "Kirill Simonov"
AUTHOR_EMAIL = 'xi@resolvent.net'
LICENSE = "MIT"
PLATFORMS = "Any"
URL = "https://pyyaml.org/"
DOWNLOAD_URL = "https://pypi.org/project/PyYAML/"
CLASSIFIERS = [
    "Development Status :: 5 - Production/Stable",
    "Intended Audience :: Developers",
    "License :: OSI Approved :: MIT License",
    "Operating System :: OS Independent",
    "Programming Language :: Cython",
    "Programming Language :: Python",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.6",
    "Programming Language :: Python :: 3.7",
    "Programming Language :: Python :: 3.8",
    "Programming Language :: Python :: 3.9",
    "Programming Language :: Python :: 3.10",
    "Programming Language :: Python :: 3.11",
    "Programming Language :: Python :: Implementation :: CPython",
    "Programming Language :: Python :: Implementation :: PyPy",
    "Topic :: Software Development :: Libraries :: Python Modules",
    "Topic :: Text Processing :: Markup",
]
PROJECT_URLS = {
   'Bug Tracker': 'https://github.com/yaml/pyyaml/issues',
   'CI': 'https://github.com/yaml/pyyaml/actions',
   'Documentation': 'https://pyyaml.org/wiki/PyYAMLDocumentation',
   'Mailing lists': 'http://lists.sourceforge.net/lists/listinfo/yaml-core',
   'Source Code': 'https://github.com/yaml/pyyaml',
}

LIBYAML_CHECK = """
#include <yaml.h>

int main(void) {
    yaml_parser_t parser;
    yaml_emitter_t emitter;

    yaml_parser_initialize(&parser);
    yaml_parser_delete(&parser);

    yaml_emitter_initialize(&emitter);
    yaml_emitter_delete(&emitter);

    return 0;
}
"""

import sys, os, os.path, pathlib, platform, shutil, tempfile, warnings

# for newer setuptools, enable the embedded distutils before importing setuptools/distutils to avoid warnings
os.environ['SETUPTOOLS_USE_DISTUTILS'] = 'local'

from setuptools import setup, Command, Distribution as _Distribution, Extension as _Extension
from setuptools.command.build_ext import build_ext as _build_ext
# NB: distutils imports must remain below setuptools to ensure we use the embedded version
from distutils import log
from distutils.errors import DistutilsError, CompileError, LinkError, DistutilsPlatformError

with_cython = False
if 'sdist' in sys.argv or os.environ.get('PYYAML_FORCE_CYTHON') == '1':
    # we need cython here
    with_cython = True
try:
    from Cython.Distutils.extension import Extension as _Extension
    from Cython.Distutils import build_ext as _build_ext
    with_cython = True
except ImportError:
    if with_cython:
        raise

try:
    from wheel.bdist_wheel import bdist_wheel
except ImportError:
    bdist_wheel = None

# on Windows, disable wheel generation warning noise
windows_ignore_warnings = [
"Unknown distribution option: 'python_requires'",
"Config variable 'Py_DEBUG' is unset",
"Config variable 'WITH_PYMALLOC' is unset",
"Config variable 'Py_UNICODE_SIZE' is unset",
"Cython directive 'language_level' not set"
]

if platform.system() == 'Windows':
    for w in windows_ignore_warnings:
        warnings.filterwarnings('ignore', w)

class Distribution(_Distribution):
    def __init__(self, attrs=None):
        _Distribution.__init__(self, attrs)
        if not self.ext_modules:
            return
        for idx in range(len(self.ext_modules)-1, -1, -1):
            ext = self.ext_modules[idx]
            if not isinstance(ext, Extension):
                continue
            setattr(self, ext.attr_name, None)
            self.global_options = [
                    (ext.option_name, None,
                        "include %s (default if %s is available)"
                        % (ext.feature_description, ext.feature_name)),
                    (ext.neg_option_name, None,
                        "exclude %s" % ext.feature_description),
            ] + self.global_options
            self.negative_opt = self.negative_opt.copy()
            self.negative_opt[ext.neg_option_name] = ext.option_name

    def has_ext_modules(self):
        if not self.ext_modules:
            return False
        for ext in self.ext_modules:
            with_ext = self.ext_status(ext)
            if with_ext is None or with_ext:
                return True
        return False

    def ext_status(self, ext):
        implementation = platform.python_implementation()
        if implementation not in ['CPython', 'PyPy']:
            return False
        if isinstance(ext, Extension):
            # the "build by default" behavior is implemented by this returning None
            with_ext = getattr(self, ext.attr_name) or os.environ.get('PYYAML_FORCE_{0}'.format(ext.feature_name.upper()))
            try:
                with_ext = int(with_ext)  # attempt coerce envvar to int
            except TypeError:
                pass
            return with_ext
        else:
            return True

class Extension(_Extension):

    def __init__(self, name, sources, feature_name, feature_description,
            feature_check, **kwds):
        if not with_cython:
            for filename in sources[:]:
                base, ext = os.path.splitext(filename)
                if ext == '.pyx':
                    sources.remove(filename)
                    sources.append('%s.c' % base)
        _Extension.__init__(self, name, sources, **kwds)
        self.feature_name = feature_name
        self.feature_description = feature_description
        self.feature_check = feature_check
        self.attr_name = 'with_' + feature_name.replace('-', '_')
        self.option_name = 'with-' + feature_name
        self.neg_option_name = 'without-' + feature_name

class build_ext(_build_ext):

    def run(self):
        optional = True
        disabled = True
        for ext in self.extensions:
            with_ext = self.distribution.ext_status(ext)
            if with_ext is None:
                disabled = False
            elif with_ext:
                optional = False
                disabled = False
                break
        if disabled:
            return
        try:
            _build_ext.run(self)
        except DistutilsPlatformError:
            exc = sys.exc_info()[1]
            if optional:
                log.warn(str(exc))
                log.warn("skipping build_ext")
            else:
                raise

    def get_source_files(self):
        self.check_extensions_list(self.extensions)
        filenames = []
        for ext in self.extensions:
            if with_cython:
                self.cython_sources(ext.sources, ext)
            for filename in ext.sources:
                filenames.append(filename)
                base = os.path.splitext(filename)[0]
                for ext in ['c', 'h', 'pyx', 'pxd']:
                    filename = '%s.%s' % (base, ext)
                    if filename not in filenames and os.path.isfile(filename):
                        filenames.append(filename)
        return filenames

    def get_outputs(self):
        self.check_extensions_list(self.extensions)
        outputs = []
        for ext in self.extensions:
            fullname = self.get_ext_fullname(ext.name)
            filename = os.path.join(self.build_lib,
                                    self.get_ext_filename(fullname))
            if os.path.isfile(filename):
                outputs.append(filename)
        return outputs

    def build_extensions(self):
        self.check_extensions_list(self.extensions)
        for ext in self.extensions:
            with_ext = self.distribution.ext_status(ext)
            if with_ext is not None and not with_ext:
                continue
            if with_cython:
                ext.sources = self.cython_sources(ext.sources, ext)
            try:
                self.build_extension(ext)
            except (CompileError, LinkError):
                if with_ext is not None:
                    raise
                log.warn("Error compiling module, falling back to pure Python")

class test(Command):

    user_options = []

    def initialize_options(self):
        pass

    def finalize_options(self):
        pass

    def run(self):
        build_cmd = self.get_finalized_command('build')
        build_cmd.run()

        # running the tests this way can pollute the post-MANIFEST build sources
        # (see https://github.com/yaml/pyyaml/issues/527#issuecomment-921058344)
        # until we remove the test command, run tests from an ephemeral copy of the intermediate build sources
        tempdir = tempfile.TemporaryDirectory(prefix='test_pyyaml')

        try:
            # have to create a subdir since we don't get dir_exists_ok on copytree until 3.8
            temp_test_path = pathlib.Path(tempdir.name) / 'pyyaml'
            shutil.copytree(build_cmd.build_lib, temp_test_path)
            sys.path.insert(0, str(temp_test_path))
            sys.path.insert(0, 'tests/lib')

            import test_all
            if not test_all.main([]):
                raise DistutilsError("Tests failed")
        finally:
            try:
                # this can fail under Windows; best-effort cleanup
                tempdir.cleanup()
            except Exception:
                pass

cmdclass = {
    'build_ext': build_ext,
    'test': test,
}
if bdist_wheel:
    cmdclass['bdist_wheel'] = bdist_wheel

if __name__ == '__main__':

    setup(
        name=NAME,
        version=VERSION,
        description=DESCRIPTION,
        long_description=LONG_DESCRIPTION,
        author=AUTHOR,
        author_email=AUTHOR_EMAIL,
        license=LICENSE,
        platforms=PLATFORMS,
        url=URL,
        download_url=DOWNLOAD_URL,
        classifiers=CLASSIFIERS,
        project_urls=PROJECT_URLS,

        package_dir={'': 'lib'},
        packages=['yaml', '_yaml'],
        ext_modules=[
            Extension('yaml._yaml', ['yaml/_yaml.pyx'],
                'libyaml', "LibYAML bindings", LIBYAML_CHECK,
                libraries=['yaml']),
        ],

        distclass=Distribution,
        cmdclass=cmdclass,
        python_requires='>=3.6',
    )

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