mirror of
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295 lines
12 KiB
Python
295 lines
12 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 = 1
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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=1)
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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 = 0
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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 = 1
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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 = 0
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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 = 0
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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 = 0
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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 = 1
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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.ddir and (len(compile_dests) != 1
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or not os.path.isdir(compile_dests[0]))):
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parser.exit('-d destdir requires exactly one directory argument')
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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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