mirror of
https://github.com/python/cpython.git
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1e3c3e906c
the return values as well as test them. Thanks to Nicholas Chammas for the bug report and initial patch.
291 lines
11 KiB
Python
291 lines
11 KiB
Python
"""Module/script to byte-compile all .py files to .pyc files.
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When called as a script with arguments, this compiles the directories
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given as arguments recursively; the -l option prevents it from
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recursing into directories.
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Without arguments, if compiles all modules on sys.path, without
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recursing into subdirectories. (Even though it should do so for
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packages -- for now, you'll have to deal with packages separately.)
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See module py_compile for details of the actual byte-compilation.
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"""
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import os
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import sys
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import importlib.util
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import py_compile
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import struct
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try:
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from concurrent.futures import ProcessPoolExecutor
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except ImportError:
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ProcessPoolExecutor = None
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from functools import partial
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__all__ = ["compile_dir","compile_file","compile_path"]
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def _walk_dir(dir, ddir=None, maxlevels=10, quiet=0):
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if not quiet:
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print('Listing {!r}...'.format(dir))
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try:
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names = os.listdir(dir)
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except OSError:
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if quiet < 2:
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print("Can't list {!r}".format(dir))
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names = []
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names.sort()
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for name in names:
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if name == '__pycache__':
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continue
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fullname = os.path.join(dir, name)
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if ddir is not None:
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dfile = os.path.join(ddir, name)
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else:
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dfile = None
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if not os.path.isdir(fullname):
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yield fullname
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elif (maxlevels > 0 and name != os.curdir and name != os.pardir and
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os.path.isdir(fullname) and not os.path.islink(fullname)):
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yield from _walk_dir(fullname, ddir=dfile,
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maxlevels=maxlevels - 1, quiet=quiet)
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def compile_dir(dir, maxlevels=10, ddir=None, force=False, rx=None,
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quiet=0, legacy=False, optimize=-1, workers=1):
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"""Byte-compile all modules in the given directory tree.
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Arguments (only dir is required):
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dir: the directory to byte-compile
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maxlevels: maximum recursion level (default 10)
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ddir: the directory that will be prepended to the path to the
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file as it is compiled into each byte-code file.
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force: if True, force compilation, even if timestamps are up-to-date
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quiet: full output with False or 0, errors only with 1,
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no output with 2
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legacy: if True, produce legacy pyc paths instead of PEP 3147 paths
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optimize: optimization level or -1 for level of the interpreter
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workers: maximum number of parallel workers
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"""
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files = _walk_dir(dir, quiet=quiet, maxlevels=maxlevels,
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ddir=ddir)
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success = True
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if workers is not None and workers != 1 and ProcessPoolExecutor is not None:
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if workers < 0:
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raise ValueError('workers must be greater or equal to 0')
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workers = workers or None
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with ProcessPoolExecutor(max_workers=workers) as executor:
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results = executor.map(partial(compile_file,
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ddir=ddir, force=force,
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rx=rx, quiet=quiet,
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legacy=legacy,
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optimize=optimize),
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files)
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success = min(results, default=True)
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else:
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for file in files:
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if not compile_file(file, ddir, force, rx, quiet,
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legacy, optimize):
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success = False
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return success
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def compile_file(fullname, ddir=None, force=False, rx=None, quiet=0,
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legacy=False, optimize=-1):
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"""Byte-compile one file.
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Arguments (only fullname is required):
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fullname: the file to byte-compile
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ddir: if given, the directory name compiled in to the
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byte-code file.
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force: if True, force compilation, even if timestamps are up-to-date
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quiet: full output with False or 0, errors only with 1,
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no output with 2
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legacy: if True, produce legacy pyc paths instead of PEP 3147 paths
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optimize: optimization level or -1 for level of the interpreter
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"""
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success = True
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name = os.path.basename(fullname)
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if ddir is not None:
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dfile = os.path.join(ddir, name)
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else:
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dfile = None
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if rx is not None:
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mo = rx.search(fullname)
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if mo:
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return success
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if os.path.isfile(fullname):
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if legacy:
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cfile = fullname + 'c'
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else:
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if optimize >= 0:
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opt = optimize if optimize >= 1 else ''
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cfile = importlib.util.cache_from_source(
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fullname, optimization=opt)
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else:
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cfile = importlib.util.cache_from_source(fullname)
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cache_dir = os.path.dirname(cfile)
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head, tail = name[:-3], name[-3:]
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if tail == '.py':
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if not force:
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try:
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mtime = int(os.stat(fullname).st_mtime)
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expect = struct.pack('<4sl', importlib.util.MAGIC_NUMBER,
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mtime)
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with open(cfile, 'rb') as chandle:
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actual = chandle.read(8)
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if expect == actual:
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return success
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except OSError:
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pass
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if not quiet:
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print('Compiling {!r}...'.format(fullname))
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try:
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ok = py_compile.compile(fullname, cfile, dfile, True,
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optimize=optimize)
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except py_compile.PyCompileError as err:
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success = False
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if quiet >= 2:
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return success
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elif quiet:
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print('*** Error compiling {!r}...'.format(fullname))
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else:
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print('*** ', end='')
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# escape non-printable characters in msg
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msg = err.msg.encode(sys.stdout.encoding,
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errors='backslashreplace')
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msg = msg.decode(sys.stdout.encoding)
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print(msg)
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except (SyntaxError, UnicodeError, OSError) as e:
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success = False
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if quiet >= 2:
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return success
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elif quiet:
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print('*** Error compiling {!r}...'.format(fullname))
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else:
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print('*** ', end='')
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print(e.__class__.__name__ + ':', e)
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else:
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if ok == 0:
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success = False
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return success
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def compile_path(skip_curdir=1, maxlevels=0, force=False, quiet=0,
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legacy=False, optimize=-1):
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"""Byte-compile all module on sys.path.
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Arguments (all optional):
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skip_curdir: if true, skip current directory (default True)
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maxlevels: max recursion level (default 0)
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force: as for compile_dir() (default False)
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quiet: as for compile_dir() (default 0)
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legacy: as for compile_dir() (default False)
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optimize: as for compile_dir() (default -1)
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"""
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success = True
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for dir in sys.path:
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if (not dir or dir == os.curdir) and skip_curdir:
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if quiet < 2:
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print('Skipping current directory')
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else:
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success = success and compile_dir(dir, maxlevels, None,
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force, quiet=quiet,
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legacy=legacy, optimize=optimize)
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return success
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def main():
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"""Script main program."""
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import argparse
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parser = argparse.ArgumentParser(
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description='Utilities to support installing Python libraries.')
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parser.add_argument('-l', action='store_const', const=0,
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default=10, dest='maxlevels',
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help="don't recurse into subdirectories")
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parser.add_argument('-r', type=int, dest='recursion',
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help=('control the maximum recursion level. '
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'if `-l` and `-r` options are specified, '
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'then `-r` takes precedence.'))
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parser.add_argument('-f', action='store_true', dest='force',
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help='force rebuild even if timestamps are up to date')
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parser.add_argument('-q', action='count', dest='quiet', default=0,
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help='output only error messages; -qq will suppress '
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'the error messages as well.')
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parser.add_argument('-b', action='store_true', dest='legacy',
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help='use legacy (pre-PEP3147) compiled file locations')
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parser.add_argument('-d', metavar='DESTDIR', dest='ddir', default=None,
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help=('directory to prepend to file paths for use in '
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'compile-time tracebacks and in runtime '
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'tracebacks in cases where the source file is '
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'unavailable'))
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parser.add_argument('-x', metavar='REGEXP', dest='rx', default=None,
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help=('skip files matching the regular expression; '
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'the regexp is searched for in the full path '
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'of each file considered for compilation'))
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parser.add_argument('-i', metavar='FILE', dest='flist',
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help=('add all the files and directories listed in '
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'FILE to the list considered for compilation; '
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'if "-", names are read from stdin'))
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parser.add_argument('compile_dest', metavar='FILE|DIR', nargs='*',
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help=('zero or more file and directory names '
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'to compile; if no arguments given, defaults '
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'to the equivalent of -l sys.path'))
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parser.add_argument('-j', '--workers', default=1,
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type=int, help='Run compileall concurrently')
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args = parser.parse_args()
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compile_dests = args.compile_dest
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if args.rx:
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import re
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args.rx = re.compile(args.rx)
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if args.recursion is not None:
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maxlevels = args.recursion
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else:
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maxlevels = args.maxlevels
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# if flist is provided then load it
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if args.flist:
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try:
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with (sys.stdin if args.flist=='-' else open(args.flist)) as f:
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for line in f:
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compile_dests.append(line.strip())
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except OSError:
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if args.quiet < 2:
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print("Error reading file list {}".format(args.flist))
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return False
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if args.workers is not None:
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args.workers = args.workers or None
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success = True
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try:
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if compile_dests:
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for dest in compile_dests:
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if os.path.isfile(dest):
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if not compile_file(dest, args.ddir, args.force, args.rx,
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args.quiet, args.legacy):
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success = False
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else:
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if not compile_dir(dest, maxlevels, args.ddir,
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args.force, args.rx, args.quiet,
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args.legacy, workers=args.workers):
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success = False
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return success
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else:
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return compile_path(legacy=args.legacy, force=args.force,
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quiet=args.quiet)
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except KeyboardInterrupt:
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if args.quiet < 2:
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print("\n[interrupted]")
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return False
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return True
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if __name__ == '__main__':
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exit_status = int(not main())
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sys.exit(exit_status)
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