1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
'''Wheels support.'''
from distutils.util import get_platform
import email
import itertools
import os
import re
import zipfile
from pkg_resources import Distribution, PathMetadata, parse_version
from setuptools.extern.six import PY3
from setuptools import Distribution as SetuptoolsDistribution
from setuptools import pep425tags
from setuptools.command.egg_info import write_requirements
WHEEL_NAME = re.compile(
r"""^(?P<project_name>.+?)-(?P<version>\d.*?)
((-(?P<build>\d.*?))?-(?P<py_version>.+?)-(?P<abi>.+?)-(?P<platform>.+?)
)\.whl$""",
re.VERBOSE).match
NAMESPACE_PACKAGE_INIT = '''\
try:
__import__('pkg_resources').declare_namespace(__name__)
except ImportError:
__path__ = __import__('pkgutil').extend_path(__path__, __name__)
'''
def unpack(src_dir, dst_dir):
'''Move everything under `src_dir` to `dst_dir`, and delete the former.'''
for dirpath, dirnames, filenames in os.walk(src_dir):
subdir = os.path.relpath(dirpath, src_dir)
for f in filenames:
src = os.path.join(dirpath, f)
dst = os.path.join(dst_dir, subdir, f)
os.renames(src, dst)
for n, d in reversed(list(enumerate(dirnames))):
src = os.path.join(dirpath, d)
dst = os.path.join(dst_dir, subdir, d)
if not os.path.exists(dst):
# Directory does not exist in destination,
# rename it and prune it from os.walk list.
os.renames(src, dst)
del dirnames[n]
# Cleanup.
for dirpath, dirnames, filenames in os.walk(src_dir, topdown=True):
assert not filenames
os.rmdir(dirpath)
class Wheel(object):
def __init__(self, filename):
match = WHEEL_NAME(os.path.basename(filename))
if match is None:
raise ValueError('invalid wheel name: %r' % filename)
self.filename = filename
for k, v in match.groupdict().items():
setattr(self, k, v)
def tags(self):
'''List tags (py_version, abi, platform) supported by this wheel.'''
return itertools.product(self.py_version.split('.'),
self.abi.split('.'),
self.platform.split('.'))
def is_compatible(self):
'''Is the wheel is compatible with the current platform?'''
supported_tags = pep425tags.get_supported()
return next((True for t in self.tags() if t in supported_tags), False)
def egg_name(self):
return Distribution(
project_name=self.project_name, version=self.version,
platform=(None if self.platform == 'any' else get_platform()),
).egg_name() + '.egg'
def install_as_egg(self, destination_eggdir):
'''Install wheel as an egg directory.'''
with zipfile.ZipFile(self.filename) as zf:
dist_basename = '%s-%s' % (self.project_name, self.version)
dist_info = '%s.dist-info' % dist_basename
dist_data = '%s.data' % dist_basename
def get_metadata(name):
with zf.open('%s/%s' % (dist_info, name)) as fp:
value = fp.read().decode('utf-8') if PY3 else fp.read()
return email.parser.Parser().parsestr(value)
wheel_metadata = get_metadata('WHEEL')
dist_metadata = get_metadata('METADATA')
# Check wheel format version is supported.
wheel_version = parse_version(wheel_metadata.get('Wheel-Version'))
if not parse_version('1.0') <= wheel_version < parse_version('2.0dev0'):
raise ValueError('unsupported wheel format version: %s' % wheel_version)
# Extract to target directory.
os.mkdir(destination_eggdir)
zf.extractall(destination_eggdir)
# Convert metadata.
dist_info = os.path.join(destination_eggdir, dist_info)
dist = Distribution.from_location(
destination_eggdir, dist_info,
metadata=PathMetadata(destination_eggdir, dist_info)
)
# Note: we need to evaluate and strip markers now,
# as we can't easily convert back from the syntax:
# foobar; "linux" in sys_platform and extra == 'test'
def raw_req(req):
req.marker = None
return str(req)
install_requires = list(sorted(map(raw_req, dist.requires())))
extras_require = {
extra: list(sorted(
req
for req in map(raw_req, dist.requires((extra,)))
if req not in install_requires
))
for extra in dist.extras
}
egg_info = os.path.join(destination_eggdir, 'EGG-INFO')
os.rename(dist_info, egg_info)
os.rename(os.path.join(egg_info, 'METADATA'),
os.path.join(egg_info, 'PKG-INFO'))
setup_dist = SetuptoolsDistribution(attrs=dict(
install_requires=install_requires,
extras_require=extras_require,
))
write_requirements(setup_dist.get_command_obj('egg_info'),
None, os.path.join(egg_info, 'requires.txt'))
# Move data entries to their correct location.
dist_data = os.path.join(destination_eggdir, dist_data)
dist_data_scripts = os.path.join(dist_data, 'scripts')
if os.path.exists(dist_data_scripts):
egg_info_scripts = os.path.join(destination_eggdir,
'EGG-INFO', 'scripts')
os.mkdir(egg_info_scripts)
for entry in os.listdir(dist_data_scripts):
# Remove bytecode, as it's not properly handled
# during easy_install scripts install phase.
if entry.endswith('.pyc'):
os.unlink(os.path.join(dist_data_scripts, entry))
else:
os.rename(os.path.join(dist_data_scripts, entry),
os.path.join(egg_info_scripts, entry))
os.rmdir(dist_data_scripts)
for subdir in filter(os.path.exists, (
os.path.join(dist_data, d)
for d in ('data', 'headers', 'purelib', 'platlib')
)):
unpack(subdir, destination_eggdir)
if os.path.exists(dist_data):
os.rmdir(dist_data)
# Fix namespace packages.
namespace_packages = os.path.join(egg_info, 'namespace_packages.txt')
if os.path.exists(namespace_packages):
with open(namespace_packages) as fp:
namespace_packages = fp.read().split()
for mod in namespace_packages:
mod_dir = os.path.join(destination_eggdir, *mod.split('.'))
mod_init = os.path.join(mod_dir, '__init__.py')
if os.path.exists(mod_dir) and not os.path.exists(mod_init):
with open(mod_init, 'w') as fp:
fp.write(NAMESPACE_PACKAGE_INIT)
|
