298 lines
9.9 KiB
Python
298 lines
9.9 KiB
Python
# -*- coding: UTF-8 -*-
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# Copyright © 2010-2012 Piotr Ożarowski <piotr@debian.org>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from __future__ import with_statement
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import codecs
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import logging
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import os
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import re
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from cPickle import dumps
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from glob import glob
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from os.path import exists, isdir, join, split
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from shutil import rmtree
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from subprocess import PIPE, Popen
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from debpython.version import RANGE_PATTERN, getver, get_requested_versions
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log = logging.getLogger(__name__)
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EGGnPTH_RE = re.compile(r'(.*?)(-py\d\.\d(?:-[^.]*)?)?(\.egg-info|\.pth)$')
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SHEBANG_RE = re.compile(r'^#!\s*(.*?/bin/.*?)(python(2\.\d+)?(?:-dbg)?)(?:\s(.*))?[$\r\n].*')
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SHAREDLIB_RE = re.compile(r'NEEDED.*libpython(\d\.\d)')
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INSTALL_RE = re.compile(r"""
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(?P<pattern>.+?) # file pattern
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(?:\s+ # optional Python module name:
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(?P<module>[A-Za-z][A-Za-z0-9_.]*)?
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)?
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\s* # optional version range:
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(?P<vrange>%s)?$
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""" % RANGE_PATTERN, re.VERBOSE)
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REMOVE_RE = re.compile(r"""
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(?P<pattern>.+?) # file pattern
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\s* # optional version range:
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(?P<vrange>%s)?$
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""" % RANGE_PATTERN, re.VERBOSE)
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def sitedir(version, package=None, gdb=False):
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"""Return path to site-packages directory.
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>>> sitedir((2, 5))
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'/usr/lib/python2.5/site-packages/'
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>>> sitedir((2, 7), 'python-foo', True)
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'debian/python-foo/usr/lib/debug/usr/lib/python2.7/dist-packages/'
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"""
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if isinstance(version, basestring):
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version = tuple(int(i) for i in version.split('.'))
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if version >= (2, 6):
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path = "/usr/lib/python%d.%d/dist-packages/" % version
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else:
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path = "/usr/lib/python%d.%d/site-packages/" % version
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if gdb:
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path = "/usr/lib/debug%s" % path
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if package:
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path = "debian/%s%s" % (package, path)
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return path
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def relpath(target, link):
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"""Return relative path.
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>>> relpath('/usr/share/python-foo/foo.py', '/usr/bin/foo', )
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'../share/python-foo/foo.py'
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"""
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t = target.split('/')
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l = link.split('/')
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while l[0] == t[0]:
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del l[0], t[0]
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return '/'.join(['..'] * (len(l) - 1) + t)
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def relative_symlink(target, link):
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"""Create relative symlink."""
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return os.symlink(relpath(target, link), link)
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def fix_shebang(fpath, replacement=None):
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"""Normalize file's shebang.
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:param replacement: new shebang command (path to interpreter and options)
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"""
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try:
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with open(fpath) as fp:
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fcontent = fp.readlines()
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if not fcontent:
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log.debug('fix_shebang: ignoring empty file: %s', fpath)
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return None
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except IOError:
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log.error('cannot open %s', fpath)
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return False
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match = SHEBANG_RE.match(fcontent[0])
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if not match:
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return None
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if not replacement:
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path, interpreter, version, argv = match.groups()
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if path != '/usr/bin': # f.e. /usr/local/* or */bin/env
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replacement = "/usr/bin/%s" % interpreter
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if interpreter == 'python2':
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replacement = '/usr/bin/python'
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if replacement and argv:
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replacement += " %s" % argv
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if replacement:
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log.info('replacing shebang in %s (%s)', fpath, fcontent[0])
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# do not catch IOError here, the file is zeroed at this stage so it's
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# better to fail dh_python2
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with open(fpath, 'w') as fp:
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fp.write("#! %s\n" % replacement)
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fp.writelines(fcontent[1:])
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return True
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def shebang2pyver(fpath):
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"""Check file's shebang.
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:rtype: tuple
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:returns: pair of Python interpreter string and Python version
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"""
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try:
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with open(fpath) as fp:
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data = fp.read(32)
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match = SHEBANG_RE.match(data)
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if not match:
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return None
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res = match.groups()
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if res[1:3] != (None, None):
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if res[2]:
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return res[1], getver(res[2])
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return res[1], None
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except IOError:
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log.error('cannot open %s', fpath)
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def so2pyver(fpath):
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"""Return libpython version file is linked to or None.
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:rtype: tuple
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:returns: Python version
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"""
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cmd = "readelf -Wd '%s'" % fpath
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process = Popen(cmd, stdout=PIPE, shell=True)
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match = SHAREDLIB_RE.search(process.stdout.read())
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if match:
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return getver(match.groups()[0])
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def clean_egg_name(name):
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"""Remove Python version and platform name from Egg files/dirs.
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>>> clean_egg_name('python_pipeline-0.1.3_py3k-py3.1.egg-info')
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'python_pipeline-0.1.3_py3k.egg-info'
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>>> clean_egg_name('Foo-1.2-py2.7-linux-x86_64.egg-info')
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'Foo-1.2.egg-info'
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"""
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match = EGGnPTH_RE.match(name)
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if match and match.group(2) is not None:
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return ''.join(match.group(1, 3))
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return name
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class memoize(object):
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def __init__(self, func):
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self.func = func
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self.cache = {}
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def __call__(self, *args, **kwargs):
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key = dumps((args, kwargs))
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if key not in self.cache:
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self.cache[key] = self.func(*args, **kwargs)
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return self.cache[key]
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def pyinstall(package, vrange):
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"""Install local files listed in pkg.pyinstall files as public modules."""
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status = True
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srcfpath = "./debian/%s.pyinstall" % package
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if not exists(srcfpath):
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return status
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versions = get_requested_versions(vrange)
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for line in codecs.open(srcfpath, encoding='utf-8'):
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if not line or line.startswith('#'):
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continue
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details = INSTALL_RE.match(line)
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if not details:
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status = False
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log.warn('%s.pyinstall: unrecognized line: %s',
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package, line)
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continue
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details = details.groupdict()
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if details['module']:
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details['module'] = details['module'].replace('.', '/')
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myvers = versions & get_requested_versions(details['vrange'])
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if not myvers:
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log.debug('%s.pyinstall: no matching versions for line %s',
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package, line)
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continue
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files = glob(details['pattern'])
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if not files:
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status = False
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log.error('%s.pyinstall: file not found: %s',
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package, details['pattern'])
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continue
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for fpath in files:
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fpath = fpath.lstrip('/.')
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if details['module']:
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dstname = join(details['module'], split(fpath)[1])
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elif fpath.startswith('debian/'):
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dstname = fpath[7:]
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else:
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dstname = fpath
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for version in myvers:
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dstfpath = join(sitedir(version, package), dstname)
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dstdir = split(dstfpath)[0]
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if not exists(dstdir):
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try:
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os.makedirs(dstdir)
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except Exception:
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log.error('cannot create %s directory', dstdir)
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return False
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if exists(dstfpath):
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try:
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os.remove(dstfpath)
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except Exception:
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status = False
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log.error('cannot replace %s file', dstfpath)
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continue
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try:
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os.link(fpath, dstfpath)
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except Exception:
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status = False
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log.error('cannot copy %s file to %s', fpath, dstdir)
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return status
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def pyremove(package, vrange):
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"""Remove public modules listed in pkg.pyremove file."""
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status = True
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srcfpath = "./debian/%s.pyremove" % package
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if not exists(srcfpath):
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return status
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versions = get_requested_versions(vrange)
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for line in codecs.open(srcfpath, encoding='utf-8'):
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if not line or line.startswith('#'):
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continue
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details = REMOVE_RE.match(line)
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if not details:
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status = False
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log.warn('%s.pyremove: unrecognized line: %s',
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package, line)
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continue
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details = details.groupdict()
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myvers = versions & get_requested_versions(details['vrange'])
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if not myvers:
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log.debug('%s.pyremove: no matching versions for line %s',
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package, line)
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continue
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for version in myvers:
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files = glob(sitedir(version, package) + details['pattern'])
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if not files:
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log.debug('%s.pyremove: nothing to remove: python%d.%d, %s',
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package, version, details['pattern'])
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continue
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for fpath in files:
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if isdir(fpath):
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try:
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rmtree(fpath)
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except Exception, e:
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status = False
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log.error(e)
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else:
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try:
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os.remove(fpath)
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except (IOError, OSError), e:
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status = False
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log.error(e)
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return status
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