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#! /usr/bin/python3 # vim: et ts=4 sw=4 # 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. import logging import optparse import sys # glob1() is not in the public documentation, UTSL. from glob import glob1 from os import environ, remove, rmdir from os.path import dirname, basename, exists, join, splitext sys.path.insert(1, '/usr/share/python3/') from debpython import files as dpf from debpython.interpreter import Interpreter from debpython.version import SUPPORTED, getver, vrepr # initialize script logging.basicConfig(format='%(levelname).1s: %(module)s:%(lineno)d: ' '%(message)s') log = logging.getLogger(__name__) """TODO: move it to manpage Examples: py3clean -p python3-mako # all .py[co] files and __pycache__ directories from the package py3clean /usr/lib/python3.1/dist-packages # python3.1 py3clean -V 3.3 /usr/lib/python3/ # python 3.3 only py3clean -V 3.3 /usr/lib/foo/bar.py # bar/__pycache__/bar.cpython-33.py[co] py3clean /usr/lib/python3/ # all Python 3.X """ def get_magic_tag_to_remove(version): """Returns magic tag or True if all of them should be removed.""" i = Interpreter('python') map_ = {} for v in SUPPORTED: try: map_[v] = i.magic_tag(v) except Exception: log.debug('magic tag for %s not recognized', vrepr(v), exc_info=True) if version not in map_: try: map_[version] = i.magic_tag(version) except Exception as e: log.error('cannot find magic tag for Python %s: %s', vrepr(version), e) exit(4) tag = map_[version] # skip shared tags for v, t in map_.items(): if v == version: continue if t == tag: log.info('magic tag(s) used by python%s. Nothing to remove.', vrepr(v)) exit(0) log.debug('magic tags to remove: %s', tag) return tag def destroyer(magic_tag=None): # ;-) """Remove every .py[co] file associated to received .py file. :param magic_tag: * If None, removes all associated .py[co] files from __pycache__ directory. If the resulting directory is empty, and is not a system site package, then the directory is also removed. * If False, removes python3.1's .pyc files only * Otherwise removes given magic tag from __pycache__ directory. If the resulting directory is empty, and is not a system site package, then the directory is also removed. :type magic_tag: None or False or str """ if magic_tag is None: # remove compiled files in __pycache__ directory def find_files_to_remove(pyfile): directory = join(dirname(pyfile), '__pycache__') fname = splitext(basename(pyfile))[0] for fn in glob1(directory, "%s.*" % fname): yield join(directory, fn) # remove "classic" .pyc files as well for filename in ("%sc" % pyfile, "%so" % pyfile): if exists(filename): yield filename # workaround for http://bugs.python.org/issue22966 if '.' in fname: sane_fname = join(dirname(pyfile), fname.split('.', 1)[0]) for fn in find_files_to_remove(sane_fname): yield join(directory, fn) elif magic_tag is False: # remove 3.1's .pyc files only def find_files_to_remove(pyfile): # NOQA for filename in ("%sc" % pyfile, "%so" % pyfile): if exists(filename): yield filename else: # remove .pyc files for no longer needed magic tags def find_files_to_remove(pyfile): # NOQA directory = join(dirname(pyfile), '__pycache__') fname = splitext(basename(pyfile))[0] for fn in glob1(directory, "%s.%s.py[co]" % (fname, magic_tag)): yield join(directory, fn) # workaround for http://bugs.python.org/issue22966 if '.' in fname: sane_fname = join(dirname(pyfile), fname.split('.', 1)[0]) for fn in find_files_to_remove(sane_fname): yield join(directory, fn) def myremove(fname): remove(fname) directory = dirname(fname) # remove __pycache__ directory if it's empty if directory.endswith('__pycache__'): try: rmdir(directory) except Exception: pass counter = 0 try: while True: pyfile = (yield) for filename in find_files_to_remove(pyfile): try: myremove(filename) counter += 1 except (IOError, OSError) as e: log.error('cannot remove %s', filename) log.debug(e) except GeneratorExit: log.info("removed files: %s", counter) def main(): usage = '%prog [-V VERSION] [-p PACKAGE] [DIR_OR_FILE]' parser = optparse.OptionParser(usage, version='%prog 3.11.2-1+b1') parser.add_option('-v', '--verbose', action='store_true', dest='verbose', help='turn verbose mode on') parser.add_option('-q', '--quiet', action='store_false', dest='verbose', default=False, help='be quiet') parser.add_option('-p', '--package', help='specify Debian package name to clean') parser.add_option('-V', dest='version', help='specify Python version to clean') (options, args) = parser.parse_args() if options.verbose or environ.get('PYCLEAN_DEBUG') == '1': log.setLevel(logging.DEBUG) log.debug('argv: %s', sys.argv) log.debug('options: %s', options) log.debug('args: %s', args) else: log.setLevel(logging.WARNING) if options.version: if options.version.endswith('3.1'): # 3.1, -3.1 magic_tag = False else: magic_tag = get_magic_tag_to_remove(getver(options.version)) d = destroyer(magic_tag) else: d = destroyer() # remove everything next(d) # initialize coroutine if not options.package and not args: parser.print_usage() exit(1) if options.package: log.info('cleaning package %s', options.package) pfiles = set(dpf.from_package(options.package)) if args: log.info('cleaning directories: %s', args) files = set(dpf.from_directory(args)) if options.package: files = files & pfiles else: files = pfiles for filename in files: d.send(filename) if __name__ == '__main__': main()