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py3compile
#! /usr/bin/python3 # vim: et ts=4 sw=4 # Copyright © 2010-2012 Piotr Ożarowski <piotr@debian.org> # Copyright © 2010 Canonical Ltd # # 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 os import struct import sys from os import environ, listdir, mkdir from os.path import dirname, exists, isdir, join from subprocess import PIPE, Popen sys.path.insert(1, '/usr/share/python3/') from debpython.version import SUPPORTED, debsorted, vrepr, \ get_requested_versions, parse_vrange, getver from debpython import files as dpf, PUBLIC_DIR_RE, memoize from debpython.interpreter import Interpreter from debpython.option import Option, compile_regexpr # initialize script logging.basicConfig(format='%(levelname).1s: %(module)s:%(lineno)d: ' '%(message)s') log = logging.getLogger(__name__) STDINS = {} WORKERS = {} """TODO: move it to manpage Examples: pycompile -p python3-mako # package's public files pycompile -p python3-foo /usr/share/foo # package's private files pycompile -V 3.1 /usr/lib/python3.1/ # python3.1 only pycompile -V 3.1 /usr/lib/foo/bar.py # python3.1 only pycompile -V 3.2- /usr/lib/python3/ """ ### EXCLUDES ################################################### @memoize def get_exclude_patterns_from_dir(name='/usr/share/python3/bcep/'): """Return patterns for files that shouldn't be bytecompiled.""" if not isdir(name): return [] result = [] for fn in listdir(name): if fn.startswith('.'): continue with open(join(name, fn), 'r', encoding='utf-8') as lines: for line in lines: if line.startswith('#'): continue line = line.rstrip('\n') try: type_, vrange, dname, pattern = line.split('|', 3) except ValueError: pattern = '.*' type_, vrange, dname = line.split('|', 2) if type_ != 'file': dname = dname.rstrip('/') + '/' # make sure it ends with slash vrange = parse_vrange(vrange) versions = get_requested_versions(vrange, available=True) if not versions: # pattern doesn't match installed Python versions continue if type_ == 're' or pattern: try: pattern = compile_regexpr(None, None, pattern) except Exception: log.warning('skipping invalid pattern in file %s, line: %s', fn, line) continue result.append((type_, versions, dname, pattern)) return result def get_exclude_patterns(directory='/', patterns=None, versions=None): """Return patterns for files that shouldn't be compiled in given dir.""" # make sure directory name ends with a slash directory = directory.rstrip('/') + '/' if versions is not None: # make sure it's a set (debsorted returns a list) versions = set(versions) if patterns: if versions is None: versions = set(SUPPORTED) patterns = [('re', versions, directory, i) for i in patterns] else: patterns = [] for type_, vers, dname, pattern in get_exclude_patterns_from_dir(): # skip patterns that do not match requested directory if not dname.startswith(directory[:len(dname)]): continue # skip patterns that do not match requested versions if versions and not versions & vers: continue patterns.append((type_, vers, dname, pattern)) return patterns def filter_files(files, e_patterns, compile_versions): """Generate (file, versions_to_compile) pairs.""" for fpath in files: valid_versions = set(compile_versions) # all by default for type_, vers, dname, pattern in e_patterns: if not fpath.startswith(dname): continue rfpath = fpath[len(dname):] # relative to dname if type_ == 'dir': # fpath.startswith(dname) - see above valid_versions = valid_versions - vers elif type_ == 'file' and fpath == dname: valid_versions = valid_versions - vers elif type_ == 're' and (pattern.match(fpath) or pattern.match(rfpath)): # NOTE: directory is checked at the beginning of this loop valid_versions = valid_versions - vers # move to the next file if all versions were removed if not valid_versions: break if valid_versions: public_dir = PUBLIC_DIR_RE.match(fpath) if public_dir and len(public_dir.group(1)) != 1: yield fpath, set([getver(public_dir.group(1))]) else: yield fpath, valid_versions ### COMPILE #################################################### def py_compile(version, optimize, workers): if not isinstance(version, str): version = vrepr(version) cmd = ["/usr/bin/python" + version] if optimize: cmd.append("-O") cmd += ["-m", "py_compile", "-"] process = Popen(cmd, bufsize=0, stdin=PIPE, close_fds=True) workers[version] = process # keep the reference for .communicate() stdin = process.stdin while True: filename = (yield) stdin.write(filename.encode('utf-8') + b'\n') def compile(files, versions, force, optimize, e_patterns=None): global STDINS, WORKERS # start Python interpreters that will handle byte compilation for version in versions: if version not in STDINS: coroutine = py_compile(version, optimize, WORKERS) next(coroutine) STDINS[version] = coroutine interpreter = Interpreter('python' if not optimize else 'python -O') # byte compile files skip_dirs = set() for fn, versions_to_compile in filter_files(files, e_patterns, versions): for version in versions_to_compile: cfn = interpreter.cache_file(fn, version) if version == (3, 1): if exists(cfn) and not force: ftime = os.stat(fn).st_mtime try: ctime = os.stat(cfn).st_mtime except os.error: ctime = 0 if ctime > ftime: continue else: pycache_dir = dirname(cfn) if not force: try: mtime = int(os.stat(fn).st_mtime) expect = struct.pack('<4sLL', interpreter.magic_number(version), 0, mtime & 0xFFFF_FFFF) with open(cfn, 'rb') as chandle: actual = chandle.read(12) if expect == actual: continue except (IOError, OSError): pass if pycache_dir not in skip_dirs and not exists(pycache_dir): try: mkdir(pycache_dir) except Exception as e: log.error("cannot create directory %s: %r", pycache_dir, e) skip_dirs.add(pycache_dir) continue pipe = STDINS[version] pipe.send(fn) ################################################################ def main(): usage = '%prog [-V [X.Y][-][A.B]] DIR_OR_FILE [-X REGEXPR]\n' +\ ' %prog -p PACKAGE' parser = optparse.OptionParser(usage, version='%prog 3.12.3-0ubuntu1', option_class=Option) 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('-f', '--force', action='store_true', dest='force', default=False, help='force rebuild even if timestamps are up-to-date') parser.add_option('-O', action='store_true', dest='optimize', default=False, help="byte-compile to .pyo files") parser.add_option('-p', '--package', help='specify Debian package name whose files should be bytecompiled') parser.add_option('-V', type='version_range', dest='vrange', help="""force private modules to be bytecompiled with Python version from given range, regardless of the default Python version in the system. If there are no other options, bytecompile all public modules for installed Python versions that match given range. VERSION_RANGE examples: '3.1' (version 3.1 only), '3.1-' (version 3.1 or newer), '3.1-3.3' (version 3.1 or 3.2), '-4.0' (all supported 3.X versions)""") parser.add_option('-X', '--exclude', action='append', dest='regexpr', type='regexpr', help='exclude items that match given REGEXPR. \ You may use this option multiple times to build up a list of things to exclude.') (options, args) = parser.parse_args() if options.verbose or environ.get('PYCOMPILE_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.WARN) if options.regexpr and not args: parser.error('--exclude option works with private directories ' 'only, please use /usr/share/python3/bcep to specify ' 'public modules to skip') if options.vrange and options.vrange[0] == options.vrange[1] and\ options.vrange != (None, None) and\ exists("/usr/bin/python%d.%d" % options.vrange[0]): # specific version requested, use it even if it's not in SUPPORTED versions = {options.vrange[0]} else: versions = get_requested_versions(options.vrange, available=True) if not versions: log.error('Requested versions are not installed') exit(3) if options.package and args: # package's private directories # get requested Python version compile_versions = debsorted(versions)[:1] log.debug('compile versions: %s', versions) pkg_files = tuple(dpf.from_package(options.package)) for item in args: e_patterns = get_exclude_patterns(item, options.regexpr, compile_versions) if not exists(item): log.warning('No such file or directory: %s', item) else: log.debug('byte compiling %s using Python %s', item, compile_versions) files = dpf.filter_directory(pkg_files, item) compile(files, compile_versions, options.force, options.optimize, e_patterns) elif options.package: # package's public modules # no need to limit versions here, it's either pyr mode or version is # hardcoded in path / via -V option e_patterns = get_exclude_patterns() files = dpf.from_package(options.package) files = dpf.filter_public(files, versions) compile(files, versions, options.force, options.optimize, e_patterns) elif args: # other directories/files for item in args: e_patterns = get_exclude_patterns(item, options.regexpr, versions) files = dpf.from_directory(item) compile(files, versions, options.force, options.optimize, e_patterns) else: parser.print_usage() exit(1) # wait for all processes to finish rv = 0 for process in WORKERS.values(): process.communicate() if process.returncode not in (None, 0): rv = process.returncode exit(rv) if __name__ == '__main__': main()
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