Tiny File Manager

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from distutils import log
import distutils.command.sdist as orig
import os
import sys
import io
import contextlib

from .py36compat import sdist_add_defaults

import pkg_resources

_default_revctrl = list

def walk_revctrl(dirname=''):
    """Find all files under revision control"""
    for ep in pkg_resources.iter_entry_points('setuptools.file_finders'):
        for item in ep.load()(dirname):
            yield item

class sdist(sdist_add_defaults, orig.sdist):
    """Smart sdist that finds anything supported by revision control"""

user_options = [
        ('formats=', None,
         "formats for source distribution (comma-separated list)"),
        ('keep-temp', 'k',
         "keep the distribution tree around after creating " +
         "archive file(s)"),
        ('dist-dir=', 'd',
         "directory to put the source distribution archive(s) in "
         "[default: dist]"),
        ('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]"),
    ]

negative_opt = {}

README_EXTENSIONS = ['', '.rst', '.txt', '.md']
    READMES = tuple('README{0}'.format(ext) for ext in README_EXTENSIONS)

def run(self):
        self.run_command('egg_info')
        ei_cmd = self.get_finalized_command('egg_info')
        self.filelist = ei_cmd.filelist
        self.filelist.append(os.path.join(ei_cmd.egg_info, 'SOURCES.txt'))
        self.check_readme()

# Run sub commands
        for cmd_name in self.get_sub_commands():
            self.run_command(cmd_name)

self.make_distribution()

dist_files = getattr(self.distribution, 'dist_files', [])
        for file in self.archive_files:
            data = ('sdist', '', file)
            if data not in dist_files:
                dist_files.append(data)

def initialize_options(self):
        orig.sdist.initialize_options(self)

self._default_to_gztar()

def _default_to_gztar(self):
        # only needed on Python prior to 3.6.
        if sys.version_info >= (3, 6, 0, 'beta', 1):
            return
        self.formats = ['gztar']

def make_distribution(self):
        """
        Workaround for #516
        """
        with self._remove_os_link():
            orig.sdist.make_distribution(self)

@staticmethod
    @contextlib.contextmanager
    def _remove_os_link():
        """
        In a context, remove and restore os.link if it exists
        """

class NoValue:
            pass

orig_val = getattr(os, 'link', NoValue)
        try:
            del os.link
        except Exception:
            pass
        try:
            yield
        finally:
            if orig_val is not NoValue:
                setattr(os, 'link', orig_val)

def _add_defaults_optional(self):
        super()._add_defaults_optional()
        if os.path.isfile('pyproject.toml'):
            self.filelist.append('pyproject.toml')

def _add_defaults_python(self):
        """getting python files"""
        if self.distribution.has_pure_modules():
            build_py = self.get_finalized_command('build_py')
            self.filelist.extend(build_py.get_source_files())
            self._add_data_files(self._safe_data_files(build_py))

def _safe_data_files(self, build_py):
        """
        Since the ``sdist`` class is also used to compute the MANIFEST
        (via :obj:`setuptools.command.egg_info.manifest_maker`),
        there might be recursion problems when trying to obtain the list of
        data_files and ``include_package_data=True`` (which in turn depends on
        the files included in the MANIFEST).

To avoid that, ``manifest_maker`` should be able to overwrite this
        method and avoid recursive attempts to build/analyze the MANIFEST.
        """
        return build_py.data_files

def _add_data_files(self, data_files):
        """
        Add data files as found in build_py.data_files.
        """
        self.filelist.extend(
            os.path.join(src_dir, name)
            for _, src_dir, _, filenames in data_files
            for name in filenames
        )

def _add_defaults_data_files(self):
        try:
            super()._add_defaults_data_files()
        except TypeError:
            log.warn("data_files contains unexpected objects")

def check_readme(self):
        for f in self.READMES:
            if os.path.exists(f):
                return
        else:
            self.warn(
                "standard file not found: should have one of " +
                ', '.join(self.READMES)
            )

def make_release_tree(self, base_dir, files):
        orig.sdist.make_release_tree(self, base_dir, files)

# Save any egg_info command line options used to create this sdist
        dest = os.path.join(base_dir, 'setup.cfg')
        if hasattr(os, 'link') and os.path.exists(dest):
            # unlink and re-copy, since it might be hard-linked, and
            # we don't want to change the source version
            os.unlink(dest)
            self.copy_file('setup.cfg', dest)

self.get_finalized_command('egg_info').save_version_info(dest)

def _manifest_is_not_generated(self):
        # check for special comment used in 2.7.1 and higher
        if not os.path.isfile(self.manifest):
            return False

with io.open(self.manifest, 'rb') as fp:
            first_line = fp.readline()
        return (first_line !=
                '# file GENERATED by distutils, do NOT edit\n'.encode())

def read_manifest(self):
        """Read the manifest file (named by 'self.manifest') and use it to
        fill in 'self.filelist', the list of files to include in the source
        distribution.
        """
        log.info("reading manifest file '%s'", self.manifest)
        manifest = open(self.manifest, 'rb')
        for line in manifest:
            # The manifest must contain UTF-8. See #303.
            try:
                line = line.decode('UTF-8')
            except UnicodeDecodeError:
                log.warn("%r not UTF-8 decodable -- skipping" % line)
                continue
            # ignore comments and blank lines
            line = line.strip()
            if line.startswith('#') or not line:
                continue
            self.filelist.append(line)
        manifest.close()