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# -*- coding: UTF-8 -*- # Copyright © 2010-2012 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. from __future__ import with_statement import codecs import logging import os import re from cPickle import dumps from glob import glob from os.path import exists, isdir, join, split from shutil import rmtree from subprocess import PIPE, Popen from debpython.version import RANGE_PATTERN, getver, get_requested_versions log = logging.getLogger(__name__) EGGnPTH_RE = re.compile(r'(.*?)(-py\d\.\d(?:-[^.]*)?)?(\.egg-info|\.pth)$') SHEBANG_RE = re.compile(r'^#!\s*(.*?/bin/.*?)(python(2\.\d+)?(?:-dbg)?)(?:\s(.*))?[$\r\n].*') SHAREDLIB_RE = re.compile(r'NEEDED.*libpython(\d\.\d)') INSTALL_RE = re.compile(r""" (?P<pattern>.+?) # file pattern (?:\s+ # optional Python module name: (?P<module>[A-Za-z][A-Za-z0-9_.]*)? )? \s* # optional version range: (?P<vrange>%s)?$ """ % RANGE_PATTERN, re.VERBOSE) REMOVE_RE = re.compile(r""" (?P<pattern>.+?) # file pattern \s* # optional version range: (?P<vrange>%s)?$ """ % RANGE_PATTERN, re.VERBOSE) def sitedir(version, package=None, gdb=False): """Return path to site-packages directory. >>> sitedir((2, 5)) '/usr/lib/python2.5/site-packages/' >>> sitedir((2, 7), 'python-foo', True) 'debian/python-foo/usr/lib/debug/usr/lib/python2.7/dist-packages/' """ if isinstance(version, basestring): version = tuple(int(i) for i in version.split('.')) if version >= (2, 6): path = "/usr/lib/python%d.%d/dist-packages/" % version else: path = "/usr/lib/python%d.%d/site-packages/" % version 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 fix_shebang(fpath, replacement=None): """Normalize file's shebang. :param replacement: new shebang command (path to interpreter and options) """ try: with open(fpath) as fp: fcontent = fp.readlines() if not fcontent: log.debug('fix_shebang: ignoring empty file: %s', fpath) return None except IOError: log.error('cannot open %s', fpath) return False match = SHEBANG_RE.match(fcontent[0]) if not match: return None if not replacement: path, interpreter, version, argv = match.groups() if path != '/usr/bin': # f.e. /usr/local/* or */bin/env replacement = "/usr/bin/%s" % interpreter if interpreter == 'python2': replacement = '/usr/bin/python' if replacement and argv: replacement += " %s" % argv if replacement: log.info('replacing shebang in %s (%s)', fpath, fcontent[0]) # do not catch IOError here, the file is zeroed at this stage so it's # better to fail dh_python2 with open(fpath, 'w') as fp: fp.write("#! %s\n" % replacement) fp.writelines(fcontent[1:]) return True def shebang2pyver(fpath): """Check file's shebang. :rtype: tuple :returns: pair of Python interpreter string and Python version """ try: with open(fpath) as fp: data = fp.read(32) match = SHEBANG_RE.match(data) if not match: return None res = match.groups() if res[1:3] != (None, None): if res[2]: return res[1], getver(res[2]) return res[1], None except IOError: log.error('cannot open %s', fpath) def so2pyver(fpath): """Return libpython version file is linked to or None. :rtype: tuple :returns: Python version """ cmd = "readelf -Wd '%s'" % fpath process = Popen(cmd, stdout=PIPE, shell=True) match = SHAREDLIB_RE.search(process.stdout.read()) if match: return getver(match.groups()[0]) 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(object): 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] def pyinstall(package, vrange): """Install local files listed in pkg.pyinstall files as public modules.""" status = True srcfpath = "./debian/%s.pyinstall" % package if not exists(srcfpath): return status versions = get_requested_versions(vrange) for line in codecs.open(srcfpath, encoding='utf-8'): if not line or line.startswith('#'): continue details = INSTALL_RE.match(line) if not details: status = False log.warn('%s.pyinstall: unrecognized line: %s', package, line) continue details = details.groupdict() if details['module']: details['module'] = details['module'].replace('.', '/') myvers = versions & get_requested_versions(details['vrange']) if not myvers: log.debug('%s.pyinstall: no matching versions for line %s', package, line) continue files = glob(details['pattern']) if not files: status = False log.error('%s.pyinstall: file not found: %s', package, details['pattern']) continue for fpath in files: fpath = fpath.lstrip('/.') if details['module']: dstname = join(details['module'], split(fpath)[1]) elif fpath.startswith('debian/'): dstname = fpath[7:] else: dstname = fpath for version in myvers: dstfpath = join(sitedir(version, package), dstname) dstdir = split(dstfpath)[0] if not exists(dstdir): try: os.makedirs(dstdir) except Exception: log.error('cannot create %s directory', dstdir) return False if exists(dstfpath): try: os.remove(dstfpath) except Exception: status = False log.error('cannot replace %s file', dstfpath) continue try: os.link(fpath, dstfpath) except Exception: status = False log.error('cannot copy %s file to %s', fpath, dstdir) return status def pyremove(package, vrange): """Remove public modules listed in pkg.pyremove file.""" status = True srcfpath = "./debian/%s.pyremove" % package if not exists(srcfpath): return status versions = get_requested_versions(vrange) for line in codecs.open(srcfpath, encoding='utf-8'): if not line or line.startswith('#'): continue details = REMOVE_RE.match(line) if not details: status = False log.warn('%s.pyremove: unrecognized line: %s', package, line) continue details = details.groupdict() myvers = versions & get_requested_versions(details['vrange']) if not myvers: log.debug('%s.pyremove: no matching versions for line %s', package, line) continue for version in myvers: files = glob(sitedir(version, package) + details['pattern']) if not files: log.debug('%s.pyremove: nothing to remove: python%d.%d, %s', package, version, details['pattern']) continue for fpath in files: if isdir(fpath): try: rmtree(fpath) except Exception, e: status = False log.error(e) else: try: os.remove(fpath) except (IOError, OSError), e: status = False log.error(e) return status