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