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
|
# -*- coding: UTF-8 -*-
# Copyright © 2010 Piotr Ożarowski <piotr@debian.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import logging
import os
import re
from pickle import dumps
from os.path import isdir, islink, join, split
from debpython.version import getver
log = logging.getLogger(__name__)
EGGnPTH_RE = re.compile(r'(.*?)(-py\d\.\d(?:-[^.]*)?)?(\.egg-info|\.pth)$')
SHEBANG_RE = re.compile(r'^#!\s*/usr/bin/(?:env\s+)?(python(\d+(?:\.\d+)?)?(?:-dbg)?).*')
def sitedir(version, package=None, gdb=False):
"""Return path to site-packages directory.
Note that returned path is not the final location of .py files
>>> sitedir((3, 1))
'/usr/lib/python3/dist-packages/'
>>> sitedir((3, 1), 'python-foo', True)
'debian/python-foo/usr/lib/debug/usr/lib/python3/dist-packages/'
>>> sitedir((3, 2))
'/usr/lib/python3/dist-packages/'
"""
if isinstance(version, str):
version = tuple(int(i) for i in version.split('.'))
path = '/usr/lib/python3/dist-packages/'
if gdb:
path = "/usr/lib/debug%s" % path
if package:
path = "debian/%s%s" % (package, path)
return path
def relpath(target, link):
"""Return relative path.
>>> relpath('/usr/share/python-foo/foo.py', '/usr/bin/foo', )
'../share/python-foo/foo.py'
"""
t = target.split('/')
l = link.split('/')
while l[0] == t[0]:
del l[0], t[0]
return '/'.join(['..'] * (len(l) - 1) + t)
def relative_symlink(target, link):
"""Create relative symlink."""
return os.symlink(relpath(target, link), link)
def move_file(fpath, dstdir):
"""Move file to dstdir. Works with symlinks (including relative ones)."""
if isdir(fpath):
dname = split(fpath)[-1]
for fn in os.listdir(fpath):
move_file(join(fpath, fn), join(dstdir, dname))
if islink(fpath):
dstpath = join(dstdir, split(fpath)[-1])
relative_symlink(os.readlink(fpath), dstpath)
os.remove(fpath)
else:
os.rename(fpath, dstdir)
def shebang2pyver(fname):
"""Check file's shebang.
:rtype: tuple
:returns: pair of Python interpreter string and Python version
"""
try:
with open(fname, 'rb') as fp:
data = fp.read(32)
if b"\0" in data:
# binary file
return None
match = SHEBANG_RE.match(str(data, 'utf-8'))
if not match:
return None
res = match.groups()
if res != (None, None):
if res[1]:
if len(res[1]) == 1: # "python3"
res = (res[0], None)
else:
res = res[0], getver(res[1])
return res
except IOError:
log.error('cannot open %s', fname)
def clean_egg_name(name):
"""Remove Python version and platform name from Egg files/dirs.
>>> clean_egg_name('python_pipeline-0.1.3_py3k-py3.1.egg-info')
'python_pipeline-0.1.3_py3k.egg-info'
>>> clean_egg_name('Foo-1.2-py2.7-linux-x86_64.egg-info')
'Foo-1.2.egg-info'
"""
match = EGGnPTH_RE.match(name)
if match and match.group(2) is not None:
return ''.join(match.group(1, 3))
return name
class memoize:
def __init__(self, func):
self.func = func
self.cache = {}
def __call__(self, *args, **kwargs):
key = dumps((args, kwargs))
if key not in self.cache:
self.cache[key] = self.func(*args, **kwargs)
return self.cache[key]
|
