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"""Module/script to "compile" all .py files to .pyc (or .pyo) file.
When called as a script with arguments, this compiles the directories
given as arguments recursively; the -l option prevents it from
recursing into directories.
Without arguments, if compiles all modules on sys.path, without
recursing into subdirectories. (Even though it should do so for
packages -- for now, you'll have to deal with packages separately.)
See module py_compile for details of the actual byte-compilation.
"""
import os
import errno
import sys
import py_compile
import struct
import imp
__all__ = ["compile_dir","compile_file","compile_path"]
def compile_dir(dir, maxlevels=10, ddir=None,
force=False, rx=None, quiet=False, legacy=False):
"""Byte-compile all modules in the given directory tree.
Arguments (only dir is required):
dir: the directory to byte-compile
maxlevels: maximum recursion level (default 10)
ddir: if given, purported directory name (this is the
directory name that will show up in error messages)
force: if True, force compilation, even if timestamps are up-to-date
quiet: if True, be quiet during compilation
legacy: if True, produce legacy pyc paths instead of PEP 3147 paths
"""
if not quiet:
print('Listing', dir, '...')
try:
names = os.listdir(dir)
except os.error:
print("Can't list", dir)
names = []
names.sort()
success = 1
for name in names:
if name == '__pycache__':
continue
fullname = os.path.join(dir, name)
if ddir is not None:
dfile = os.path.join(ddir, name)
else:
dfile = None
if not os.path.isdir(fullname):
if not compile_file(fullname, ddir, force, rx, quiet, legacy):
success = 0
elif maxlevels > 0 and \
name != os.curdir and name != os.pardir and \
os.path.isdir(fullname) and \
not os.path.islink(fullname):
if not compile_dir(fullname, maxlevels - 1, dfile, force, rx,
quiet, legacy):
success = 0
return success
def compile_file(fullname, ddir=None, force=0, rx=None, quiet=False,
legacy=False):
"""Byte-compile file.
fullname: the file to byte-compile
ddir: if given, purported directory name (this is the
directory name that will show up in error messages)
force: if True, force compilation, even if timestamps are up-to-date
quiet: if True, be quiet during compilation
legacy: if True, produce legacy pyc paths instead of PEP 3147 paths
"""
success = 1
name = os.path.basename(fullname)
if ddir is not None:
dfile = os.path.join(ddir, name)
else:
dfile = None
if rx is not None:
mo = rx.search(fullname)
if mo:
return success
if os.path.isfile(fullname):
if legacy:
cfile = fullname + ('c' if __debug__ else 'o')
else:
cfile = imp.cache_from_source(fullname)
cache_dir = os.path.dirname(cfile)
head, tail = name[:-3], name[-3:]
if tail == '.py':
if not legacy:
try:
os.mkdir(cache_dir)
except OSError as error:
if error.errno != errno.EEXIST:
raise
if not force:
try:
mtime = int(os.stat(fullname).st_mtime)
expect = struct.pack('<4sl', imp.get_magic(), mtime)
with open(cfile, 'rb') as chandle:
actual = chandle.read(8)
if expect == actual:
return success
except IOError:
pass
if not quiet:
print('Compiling', fullname, '...')
try:
ok = py_compile.compile(fullname, cfile, dfile, True)
except py_compile.PyCompileError as err:
if quiet:
print('*** Error compiling', fullname, '...')
else:
print('*** ', end='')
# escape non-printable characters in msg
msg = err.msg.encode(sys.stdout.encoding,
errors='backslashreplace')
msg = msg.decode(sys.stdout.encoding)
print(msg)
success = 0
except (SyntaxError, UnicodeError, IOError) as e:
if quiet:
print('*** Error compiling', fullname, '...')
else:
print('*** ', end='')
print(e.__class__.__name__ + ':', e)
success = 0
else:
if ok == 0:
success = 0
return success
def compile_path(skip_curdir=1, maxlevels=0, force=False, quiet=False,
legacy=False):
"""Byte-compile all module on sys.path.
Arguments (all optional):
skip_curdir: if true, skip current directory (default true)
maxlevels: max recursion level (default 0)
force: as for compile_dir() (default False)
quiet: as for compile_dir() (default False)
legacy: as for compile_dir() (default False)
"""
success = 1
for dir in sys.path:
if (not dir or dir == os.curdir) and skip_curdir:
print('Skipping current directory')
else:
success = success and compile_dir(dir, maxlevels, None,
force, quiet=quiet,
legacy=legacy)
return success
def expand_args(args, flist):
"""read names in flist and append to args"""
expanded = args[:]
if flist:
try:
if flist == '-':
fd = sys.stdin
else:
fd = open(flist)
while 1:
line = fd.readline()
if not line:
break
expanded.append(line[:-1])
except IOError:
print("Error reading file list %s" % flist)
raise
return expanded
def main():
"""Script main program."""
import getopt
try:
opts, args = getopt.getopt(sys.argv[1:], 'lfqd:x:i:b')
except getopt.error as msg:
print(msg)
print("usage: python compileall.py [-l] [-f] [-q] [-d destdir] "
"[-x regexp] [-i list] [directory|file ...]")
print("-l: don't recurse down")
print("-f: force rebuild even if timestamps are up-to-date")
print("-q: quiet operation")
print("-d destdir: purported directory name for error messages")
print(" if no directory arguments, -l sys.path is assumed")
print("-x regexp: skip files matching the regular expression regexp")
print(" the regexp is searched for in the full path of the file")
print("-i list: expand list with its content "
"(file and directory names)")
print("-b: Produce legacy byte-compile file paths")
sys.exit(2)
maxlevels = 10
ddir = None
force = False
quiet = False
rx = None
flist = None
legacy = False
for o, a in opts:
if o == '-l': maxlevels = 0
if o == '-d': ddir = a
if o == '-f': force = True
if o == '-q': quiet = True
if o == '-x':
import re
rx = re.compile(a)
if o == '-i': flist = a
if o == '-b': legacy = True
if ddir:
if len(args) != 1 and not os.path.isdir(args[0]):
print("-d destdir require exactly one directory argument")
sys.exit(2)
success = 1
try:
if args or flist:
try:
if flist:
args = expand_args(args, flist)
except IOError:
success = 0
if success:
for arg in args:
if os.path.isdir(arg):
if not compile_dir(arg, maxlevels, ddir,
force, rx, quiet, legacy):
success = 0
else:
if not compile_file(arg, ddir, force, rx,
quiet, legacy):
success = 0
else:
success = compile_path(legacy=legacy)
except KeyboardInterrupt:
print("\n[interrupt]")
success = 0
return success
if __name__ == '__main__':
exit_status = int(not main())
sys.exit(exit_status)
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