--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/python3.8/site-packages/wheel/cli/convert.py	Mon Jul 27 03:47:31 2020 -0400
@@ -0,0 +1,269 @@
+import os.path
+import re
+import shutil
+import sys
+import tempfile
+import zipfile
+from distutils import dist
+from glob import iglob
+
+from ..bdist_wheel import bdist_wheel
+from ..wheelfile import WheelFile
+from . import WheelError, require_pkgresources
+
+egg_info_re = re.compile(r'''
+    (?P<name>.+?)-(?P<ver>.+?)
+    (-(?P<pyver>py\d\.\d+)
+     (-(?P<arch>.+?))?
+    )?.egg$''', re.VERBOSE)
+
+
+class _bdist_wheel_tag(bdist_wheel):
+    # allow the client to override the default generated wheel tag
+    # The default bdist_wheel implementation uses python and abi tags
+    # of the running python process. This is not suitable for
+    # generating/repackaging prebuild binaries.
+
+    full_tag_supplied = False
+    full_tag = None  # None or a (pytag, soabitag, plattag) triple
+
+    def get_tag(self):
+        if self.full_tag_supplied and self.full_tag is not None:
+            return self.full_tag
+        else:
+            return bdist_wheel.get_tag(self)
+
+
+def egg2wheel(egg_path, dest_dir):
+    filename = os.path.basename(egg_path)
+    match = egg_info_re.match(filename)
+    if not match:
+        raise WheelError('Invalid egg file name: {}'.format(filename))
+
+    egg_info = match.groupdict()
+    dir = tempfile.mkdtemp(suffix="_e2w")
+    if os.path.isfile(egg_path):
+        # assume we have a bdist_egg otherwise
+        with zipfile.ZipFile(egg_path) as egg:
+            egg.extractall(dir)
+    else:
+        # support buildout-style installed eggs directories
+        for pth in os.listdir(egg_path):
+            src = os.path.join(egg_path, pth)
+            if os.path.isfile(src):
+                shutil.copy2(src, dir)
+            else:
+                shutil.copytree(src, os.path.join(dir, pth))
+
+    pyver = egg_info['pyver']
+    if pyver:
+        pyver = egg_info['pyver'] = pyver.replace('.', '')
+
+    arch = (egg_info['arch'] or 'any').replace('.', '_').replace('-', '_')
+
+    # assume all binary eggs are for CPython
+    abi = 'cp' + pyver[2:] if arch != 'any' else 'none'
+
+    root_is_purelib = egg_info['arch'] is None
+    if root_is_purelib:
+        bw = bdist_wheel(dist.Distribution())
+    else:
+        bw = _bdist_wheel_tag(dist.Distribution())
+
+    bw.root_is_pure = root_is_purelib
+    bw.python_tag = pyver
+    bw.plat_name_supplied = True
+    bw.plat_name = egg_info['arch'] or 'any'
+    if not root_is_purelib:
+        bw.full_tag_supplied = True
+        bw.full_tag = (pyver, abi, arch)
+
+    dist_info_dir = os.path.join(dir, '{name}-{ver}.dist-info'.format(**egg_info))
+    bw.egg2dist(os.path.join(dir, 'EGG-INFO'), dist_info_dir)
+    bw.write_wheelfile(dist_info_dir, generator='egg2wheel')
+    wheel_name = '{name}-{ver}-{pyver}-{}-{}.whl'.format(abi, arch, **egg_info)
+    with WheelFile(os.path.join(dest_dir, wheel_name), 'w') as wf:
+        wf.write_files(dir)
+
+    shutil.rmtree(dir)
+
+
+def parse_wininst_info(wininfo_name, egginfo_name):
+    """Extract metadata from filenames.
+
+    Extracts the 4 metadataitems needed (name, version, pyversion, arch) from
+    the installer filename and the name of the egg-info directory embedded in
+    the zipfile (if any).
+
+    The egginfo filename has the format::
+
+        name-ver(-pyver)(-arch).egg-info
+
+    The installer filename has the format::
+
+        name-ver.arch(-pyver).exe
+
+    Some things to note:
+
+    1. The installer filename is not definitive. An installer can be renamed
+       and work perfectly well as an installer. So more reliable data should
+       be used whenever possible.
+    2. The egg-info data should be preferred for the name and version, because
+       these come straight from the distutils metadata, and are mandatory.
+    3. The pyver from the egg-info data should be ignored, as it is
+       constructed from the version of Python used to build the installer,
+       which is irrelevant - the installer filename is correct here (even to
+       the point that when it's not there, any version is implied).
+    4. The architecture must be taken from the installer filename, as it is
+       not included in the egg-info data.
+    5. Architecture-neutral installers still have an architecture because the
+       installer format itself (being executable) is architecture-specific. We
+       should therefore ignore the architecture if the content is pure-python.
+    """
+
+    egginfo = None
+    if egginfo_name:
+        egginfo = egg_info_re.search(egginfo_name)
+        if not egginfo:
+            raise ValueError("Egg info filename %s is not valid" % (egginfo_name,))
+
+    # Parse the wininst filename
+    # 1. Distribution name (up to the first '-')
+    w_name, sep, rest = wininfo_name.partition('-')
+    if not sep:
+        raise ValueError("Installer filename %s is not valid" % (wininfo_name,))
+
+    # Strip '.exe'
+    rest = rest[:-4]
+    # 2. Python version (from the last '-', must start with 'py')
+    rest2, sep, w_pyver = rest.rpartition('-')
+    if sep and w_pyver.startswith('py'):
+        rest = rest2
+        w_pyver = w_pyver.replace('.', '')
+    else:
+        # Not version specific - use py2.py3. While it is possible that
+        # pure-Python code is not compatible with both Python 2 and 3, there
+        # is no way of knowing from the wininst format, so we assume the best
+        # here (the user can always manually rename the wheel to be more
+        # restrictive if needed).
+        w_pyver = 'py2.py3'
+    # 3. Version and architecture
+    w_ver, sep, w_arch = rest.rpartition('.')
+    if not sep:
+        raise ValueError("Installer filename %s is not valid" % (wininfo_name,))
+
+    if egginfo:
+        w_name = egginfo.group('name')
+        w_ver = egginfo.group('ver')
+
+    return {'name': w_name, 'ver': w_ver, 'arch': w_arch, 'pyver': w_pyver}
+
+
+def wininst2wheel(path, dest_dir):
+    with zipfile.ZipFile(path) as bdw:
+        # Search for egg-info in the archive
+        egginfo_name = None
+        for filename in bdw.namelist():
+            if '.egg-info' in filename:
+                egginfo_name = filename
+                break
+
+        info = parse_wininst_info(os.path.basename(path), egginfo_name)
+
+        root_is_purelib = True
+        for zipinfo in bdw.infolist():
+            if zipinfo.filename.startswith('PLATLIB'):
+                root_is_purelib = False
+                break
+        if root_is_purelib:
+            paths = {'purelib': ''}
+        else:
+            paths = {'platlib': ''}
+
+        dist_info = "%(name)s-%(ver)s" % info
+        datadir = "%s.data/" % dist_info
+
+        # rewrite paths to trick ZipFile into extracting an egg
+        # XXX grab wininst .ini - between .exe, padding, and first zip file.
+        members = []
+        egginfo_name = ''
+        for zipinfo in bdw.infolist():
+            key, basename = zipinfo.filename.split('/', 1)
+            key = key.lower()
+            basepath = paths.get(key, None)
+            if basepath is None:
+                basepath = datadir + key.lower() + '/'
+            oldname = zipinfo.filename
+            newname = basepath + basename
+            zipinfo.filename = newname
+            del bdw.NameToInfo[oldname]
+            bdw.NameToInfo[newname] = zipinfo
+            # Collect member names, but omit '' (from an entry like "PLATLIB/"
+            if newname:
+                members.append(newname)
+            # Remember egg-info name for the egg2dist call below
+            if not egginfo_name:
+                if newname.endswith('.egg-info'):
+                    egginfo_name = newname
+                elif '.egg-info/' in newname:
+                    egginfo_name, sep, _ = newname.rpartition('/')
+        dir = tempfile.mkdtemp(suffix="_b2w")
+        bdw.extractall(dir, members)
+
+    # egg2wheel
+    abi = 'none'
+    pyver = info['pyver']
+    arch = (info['arch'] or 'any').replace('.', '_').replace('-', '_')
+    # Wininst installers always have arch even if they are not
+    # architecture-specific (because the format itself is).
+    # So, assume the content is architecture-neutral if root is purelib.
+    if root_is_purelib:
+        arch = 'any'
+    # If the installer is architecture-specific, it's almost certainly also
+    # CPython-specific.
+    if arch != 'any':
+        pyver = pyver.replace('py', 'cp')
+    wheel_name = '-'.join((dist_info, pyver, abi, arch))
+    if root_is_purelib:
+        bw = bdist_wheel(dist.Distribution())
+    else:
+        bw = _bdist_wheel_tag(dist.Distribution())
+
+    bw.root_is_pure = root_is_purelib
+    bw.python_tag = pyver
+    bw.plat_name_supplied = True
+    bw.plat_name = info['arch'] or 'any'
+
+    if not root_is_purelib:
+        bw.full_tag_supplied = True
+        bw.full_tag = (pyver, abi, arch)
+
+    dist_info_dir = os.path.join(dir, '%s.dist-info' % dist_info)
+    bw.egg2dist(os.path.join(dir, egginfo_name), dist_info_dir)
+    bw.write_wheelfile(dist_info_dir, generator='wininst2wheel')
+
+    wheel_path = os.path.join(dest_dir, wheel_name)
+    with WheelFile(wheel_path, 'w') as wf:
+        wf.write_files(dir)
+
+    shutil.rmtree(dir)
+
+
+def convert(files, dest_dir, verbose):
+    # Only support wheel convert if pkg_resources is present
+    require_pkgresources('wheel convert')
+
+    for pat in files:
+        for installer in iglob(pat):
+            if os.path.splitext(installer)[1] == '.egg':
+                conv = egg2wheel
+            else:
+                conv = wininst2wheel
+
+            if verbose:
+                print("{}... ".format(installer))
+                sys.stdout.flush()
+
+            conv(installer, dest_dir)
+            if verbose:
+                print("OK")