#!/usr/bin/env python
import distutils.dist
import os.path
import re
import sys
import tempfile
import zipfile
from argparse import ArgumentParser
from glob import iglob
from shutil import rmtree
import wheel.bdist_wheel
from wheel.archive import archive_wheelfile
egg_info_re = re.compile(r'''(^|/)(?P<name>[^/]+?)-(?P<ver>.+?)
(-(?P<pyver>.+?))?(-(?P<arch>.+?))?.egg-info(/|$)''', re.VERBOSE)
def parse_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 bdist_wininst2wheel(path, dest_dir=os.path.curdir):
bdw = zipfile.ZipFile(path)
# 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_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 = wheel.bdist_wheel.bdist_wheel(distutils.dist.Distribution())
else:
bw = _bdist_wheel_tag(distutils.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')
bw.write_record(dir, dist_info_dir)
archive_wheelfile(os.path.join(dest_dir, wheel_name), dir)
rmtree(dir)
class _bdist_wheel_tag(wheel.bdist_wheel.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 super(_bdist_wheel_tag, self).get_tag()
def main():
parser = ArgumentParser()
parser.add_argument('installers', nargs='*', help="Installers to convert")
parser.add_argument('--dest-dir', '-d', default=os.path.curdir,
help="Directory to store wheels (default %(default)s)")
parser.add_argument('--verbose', '-v', action='store_true')
args = parser.parse_args()
for pat in args.installers:
for installer in iglob(pat):
if args.verbose:
print("{}... ".format(installer))
sys.stdout.flush()
bdist_wininst2wheel(installer, args.dest_dir)
if args.verbose:
print("OK")
if __name__ == "__main__":
main()