You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
478 lines
18 KiB
478 lines
18 KiB
5 years ago
|
"""distutils.util
|
||
|
|
|
||
|
|
Miscellaneous utility functions -- anything that doesn't fit into
|
||
|
|
one of the other *util.py modules.
|
||
|
|
"""
|
||
|
|
|
||
|
|
__revision__ = "$Id$"
|
||
|
|
|
||
|
|
import sys, os, string, re
|
||
|
|
from distutils.errors import DistutilsPlatformError
|
||
|
|
from distutils.dep_util import newer
|
||
|
|
from distutils.spawn import spawn
|
||
|
|
from distutils import log
|
||
|
|
from distutils.errors import DistutilsByteCompileError
|
||
|
|
|
||
|
|
def get_platform ():
|
||
|
|
"""Return a string that identifies the current platform. This is used
|
||
|
|
mainly to distinguish platform-specific build directories and
|
||
|
|
platform-specific built distributions. Typically includes the OS name
|
||
|
|
and version and the architecture (as supplied by 'os.uname()'),
|
||
|
|
although the exact information included depends on the OS; eg. for IRIX
|
||
|
|
the architecture isn't particularly important (IRIX only runs on SGI
|
||
|
|
hardware), but for Linux the kernel version isn't particularly
|
||
|
|
important.
|
||
|
|
|
||
|
|
Examples of returned values:
|
||
|
|
linux-i586
|
||
|
|
linux-alpha (?)
|
||
|
|
solaris-2.6-sun4u
|
||
|
|
irix-5.3
|
||
|
|
irix64-6.2
|
||
|
|
|
||
|
|
Windows will return one of:
|
||
|
|
win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
|
||
|
|
win-ia64 (64bit Windows on Itanium)
|
||
|
|
win32 (all others - specifically, sys.platform is returned)
|
||
|
|
|
||
|
|
For other non-POSIX platforms, currently just returns 'sys.platform'.
|
||
|
|
"""
|
||
|
|
if os.name == 'nt':
|
||
|
|
# sniff sys.version for architecture.
|
||
|
|
prefix = " bit ("
|
||
|
|
i = string.find(sys.version, prefix)
|
||
|
|
if i == -1:
|
||
|
|
return sys.platform
|
||
|
|
j = string.find(sys.version, ")", i)
|
||
|
|
look = sys.version[i+len(prefix):j].lower()
|
||
|
|
if look=='amd64':
|
||
|
|
return 'win-amd64'
|
||
|
|
if look=='itanium':
|
||
|
|
return 'win-ia64'
|
||
|
|
return sys.platform
|
||
|
|
|
||
|
|
# Set for cross builds explicitly
|
||
|
|
if "_PYTHON_HOST_PLATFORM" in os.environ:
|
||
|
|
return os.environ["_PYTHON_HOST_PLATFORM"]
|
||
|
|
|
||
|
|
if os.name != "posix" or not hasattr(os, 'uname'):
|
||
|
|
# XXX what about the architecture? NT is Intel or Alpha,
|
||
|
|
# Mac OS is M68k or PPC, etc.
|
||
|
|
return sys.platform
|
||
|
|
|
||
|
|
# Try to distinguish various flavours of Unix
|
||
|
|
|
||
|
|
(osname, host, release, version, machine) = os.uname()
|
||
|
|
|
||
|
|
# Convert the OS name to lowercase, remove '/' characters
|
||
|
|
# (to accommodate BSD/OS), and translate spaces (for "Power Macintosh")
|
||
|
|
osname = string.lower(osname)
|
||
|
|
osname = string.replace(osname, '/', '')
|
||
|
|
machine = string.replace(machine, ' ', '_')
|
||
|
|
machine = string.replace(machine, '/', '-')
|
||
|
|
|
||
|
|
if osname[:5] == "linux":
|
||
|
|
# At least on Linux/Intel, 'machine' is the processor --
|
||
|
|
# i386, etc.
|
||
|
|
# XXX what about Alpha, SPARC, etc?
|
||
|
|
return "%s-%s" % (osname, machine)
|
||
|
|
elif osname[:5] == "sunos":
|
||
|
|
if release[0] >= "5": # SunOS 5 == Solaris 2
|
||
|
|
osname = "solaris"
|
||
|
|
release = "%d.%s" % (int(release[0]) - 3, release[2:])
|
||
|
|
# We can't use "platform.architecture()[0]" because a
|
||
|
|
# bootstrap problem. We use a dict to get an error
|
||
|
|
# if some suspicious happens.
|
||
|
|
bitness = {2147483647:"32bit", 9223372036854775807:"64bit"}
|
||
|
|
machine += ".%s" % bitness[sys.maxint]
|
||
|
|
# fall through to standard osname-release-machine representation
|
||
|
|
elif osname[:4] == "irix": # could be "irix64"!
|
||
|
|
return "%s-%s" % (osname, release)
|
||
|
|
elif osname[:3] == "aix":
|
||
|
|
return "%s-%s.%s" % (osname, version, release)
|
||
|
|
elif osname[:6] == "cygwin":
|
||
|
|
osname = "cygwin"
|
||
|
|
rel_re = re.compile (r'[\d.]+')
|
||
|
|
m = rel_re.match(release)
|
||
|
|
if m:
|
||
|
|
release = m.group()
|
||
|
|
elif osname[:6] == "darwin":
|
||
|
|
import _osx_support, distutils.sysconfig
|
||
|
|
osname, release, machine = _osx_support.get_platform_osx(
|
||
|
|
distutils.sysconfig.get_config_vars(),
|
||
|
|
osname, release, machine)
|
||
|
|
|
||
|
|
return "%s-%s-%s" % (osname, release, machine)
|
||
|
|
|
||
|
|
# get_platform ()
|
||
|
|
|
||
|
|
|
||
|
|
def convert_path (pathname):
|
||
|
|
"""Return 'pathname' as a name that will work on the native filesystem,
|
||
|
|
i.e. split it on '/' and put it back together again using the current
|
||
|
|
directory separator. Needed because filenames in the setup script are
|
||
|
|
always supplied in Unix style, and have to be converted to the local
|
||
|
|
convention before we can actually use them in the filesystem. Raises
|
||
|
|
ValueError on non-Unix-ish systems if 'pathname' either starts or
|
||
|
|
ends with a slash.
|
||
|
|
"""
|
||
|
|
if os.sep == '/':
|
||
|
|
return pathname
|
||
|
|
if not pathname:
|
||
|
|
return pathname
|
||
|
|
if pathname[0] == '/':
|
||
|
|
raise ValueError, "path '%s' cannot be absolute" % pathname
|
||
|
|
if pathname[-1] == '/':
|
||
|
|
raise ValueError, "path '%s' cannot end with '/'" % pathname
|
||
|
|
|
||
|
|
paths = string.split(pathname, '/')
|
||
|
|
while '.' in paths:
|
||
|
|
paths.remove('.')
|
||
|
|
if not paths:
|
||
|
|
return os.curdir
|
||
|
|
return os.path.join(*paths)
|
||
|
|
|
||
|
|
# convert_path ()
|
||
|
|
|
||
|
|
|
||
|
|
def change_root (new_root, pathname):
|
||
|
|
"""Return 'pathname' with 'new_root' prepended. If 'pathname' is
|
||
|
|
relative, this is equivalent to "os.path.join(new_root,pathname)".
|
||
|
|
Otherwise, it requires making 'pathname' relative and then joining the
|
||
|
|
two, which is tricky on DOS/Windows and Mac OS.
|
||
|
|
"""
|
||
|
|
if os.name == 'posix':
|
||
|
|
if not os.path.isabs(pathname):
|
||
|
|
return os.path.join(new_root, pathname)
|
||
|
|
else:
|
||
|
|
return os.path.join(new_root, pathname[1:])
|
||
|
|
|
||
|
|
elif os.name == 'nt':
|
||
|
|
(drive, path) = os.path.splitdrive(pathname)
|
||
|
|
if path[0] == '\\':
|
||
|
|
path = path[1:]
|
||
|
|
return os.path.join(new_root, path)
|
||
|
|
|
||
|
|
elif os.name == 'os2':
|
||
|
|
(drive, path) = os.path.splitdrive(pathname)
|
||
|
|
if path[0] == os.sep:
|
||
|
|
path = path[1:]
|
||
|
|
return os.path.join(new_root, path)
|
||
|
|
|
||
|
|
else:
|
||
|
|
raise DistutilsPlatformError, \
|
||
|
|
"nothing known about platform '%s'" % os.name
|
||
|
|
|
||
|
|
|
||
|
|
_environ_checked = 0
|
||
|
|
def check_environ ():
|
||
|
|
"""Ensure that 'os.environ' has all the environment variables we
|
||
|
|
guarantee that users can use in config files, command-line options,
|
||
|
|
etc. Currently this includes:
|
||
|
|
HOME - user's home directory (Unix only)
|
||
|
|
PLAT - description of the current platform, including hardware
|
||
|
|
and OS (see 'get_platform()')
|
||
|
|
"""
|
||
|
|
global _environ_checked
|
||
|
|
if _environ_checked:
|
||
|
|
return
|
||
|
|
|
||
|
|
if os.name == 'posix' and 'HOME' not in os.environ:
|
||
|
|
import pwd
|
||
|
|
os.environ['HOME'] = pwd.getpwuid(os.getuid())[5]
|
||
|
|
|
||
|
|
if 'PLAT' not in os.environ:
|
||
|
|
os.environ['PLAT'] = get_platform()
|
||
|
|
|
||
|
|
_environ_checked = 1
|
||
|
|
|
||
|
|
|
||
|
|
def subst_vars (s, local_vars):
|
||
|
|
"""Perform shell/Perl-style variable substitution on 'string'. Every
|
||
|
|
occurrence of '$' followed by a name is considered a variable, and
|
||
|
|
variable is substituted by the value found in the 'local_vars'
|
||
|
|
dictionary, or in 'os.environ' if it's not in 'local_vars'.
|
||
|
|
'os.environ' is first checked/augmented to guarantee that it contains
|
||
|
|
certain values: see 'check_environ()'. Raise ValueError for any
|
||
|
|
variables not found in either 'local_vars' or 'os.environ'.
|
||
|
|
"""
|
||
|
|
check_environ()
|
||
|
|
def _subst (match, local_vars=local_vars):
|
||
|
|
var_name = match.group(1)
|
||
|
|
if var_name in local_vars:
|
||
|
|
return str(local_vars[var_name])
|
||
|
|
else:
|
||
|
|
return os.environ[var_name]
|
||
|
|
|
||
|
|
try:
|
||
|
|
return re.sub(r'\$([a-zA-Z_][a-zA-Z_0-9]*)', _subst, s)
|
||
|
|
except KeyError, var:
|
||
|
|
raise ValueError, "invalid variable '$%s'" % var
|
||
|
|
|
||
|
|
# subst_vars ()
|
||
|
|
|
||
|
|
|
||
|
|
def grok_environment_error (exc, prefix="error: "):
|
||
|
|
# Function kept for backward compatibility.
|
||
|
|
# Used to try clever things with EnvironmentErrors,
|
||
|
|
# but nowadays str(exception) produces good messages.
|
||
|
|
return prefix + str(exc)
|
||
|
|
|
||
|
|
|
||
|
|
# Needed by 'split_quoted()'
|
||
|
|
_wordchars_re = _squote_re = _dquote_re = None
|
||
|
|
def _init_regex():
|
||
|
|
global _wordchars_re, _squote_re, _dquote_re
|
||
|
|
_wordchars_re = re.compile(r'[^\\\'\"%s ]*' % string.whitespace)
|
||
|
|
_squote_re = re.compile(r"'(?:[^'\\]|\\.)*'")
|
||
|
|
_dquote_re = re.compile(r'"(?:[^"\\]|\\.)*"')
|
||
|
|
|
||
|
|
def split_quoted (s):
|
||
|
|
"""Split a string up according to Unix shell-like rules for quotes and
|
||
|
|
backslashes. In short: words are delimited by spaces, as long as those
|
||
|
|
spaces are not escaped by a backslash, or inside a quoted string.
|
||
|
|
Single and double quotes are equivalent, and the quote characters can
|
||
|
|
be backslash-escaped. The backslash is stripped from any two-character
|
||
|
|
escape sequence, leaving only the escaped character. The quote
|
||
|
|
characters are stripped from any quoted string. Returns a list of
|
||
|
|
words.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# This is a nice algorithm for splitting up a single string, since it
|
||
|
|
# doesn't require character-by-character examination. It was a little
|
||
|
|
# bit of a brain-bender to get it working right, though...
|
||
|
|
if _wordchars_re is None: _init_regex()
|
||
|
|
|
||
|
|
s = string.strip(s)
|
||
|
|
words = []
|
||
|
|
pos = 0
|
||
|
|
|
||
|
|
while s:
|
||
|
|
m = _wordchars_re.match(s, pos)
|
||
|
|
end = m.end()
|
||
|
|
if end == len(s):
|
||
|
|
words.append(s[:end])
|
||
|
|
break
|
||
|
|
|
||
|
|
if s[end] in string.whitespace: # unescaped, unquoted whitespace: now
|
||
|
|
words.append(s[:end]) # we definitely have a word delimiter
|
||
|
|
s = string.lstrip(s[end:])
|
||
|
|
pos = 0
|
||
|
|
|
||
|
|
elif s[end] == '\\': # preserve whatever is being escaped;
|
||
|
|
# will become part of the current word
|
||
|
|
s = s[:end] + s[end+1:]
|
||
|
|
pos = end+1
|
||
|
|
|
||
|
|
else:
|
||
|
|
if s[end] == "'": # slurp singly-quoted string
|
||
|
|
m = _squote_re.match(s, end)
|
||
|
|
elif s[end] == '"': # slurp doubly-quoted string
|
||
|
|
m = _dquote_re.match(s, end)
|
||
|
|
else:
|
||
|
|
raise RuntimeError, \
|
||
|
|
"this can't happen (bad char '%c')" % s[end]
|
||
|
|
|
||
|
|
if m is None:
|
||
|
|
raise ValueError, \
|
||
|
|
"bad string (mismatched %s quotes?)" % s[end]
|
||
|
|
|
||
|
|
(beg, end) = m.span()
|
||
|
|
s = s[:beg] + s[beg+1:end-1] + s[end:]
|
||
|
|
pos = m.end() - 2
|
||
|
|
|
||
|
|
if pos >= len(s):
|
||
|
|
words.append(s)
|
||
|
|
break
|
||
|
|
|
||
|
|
return words
|
||
|
|
|
||
|
|
# split_quoted ()
|
||
|
|
|
||
|
|
|
||
|
|
def execute (func, args, msg=None, verbose=0, dry_run=0):
|
||
|
|
"""Perform some action that affects the outside world (eg. by
|
||
|
|
writing to the filesystem). Such actions are special because they
|
||
|
|
are disabled by the 'dry_run' flag. This method takes care of all
|
||
|
|
that bureaucracy for you; all you have to do is supply the
|
||
|
|
function to call and an argument tuple for it (to embody the
|
||
|
|
"external action" being performed), and an optional message to
|
||
|
|
print.
|
||
|
|
"""
|
||
|
|
if msg is None:
|
||
|
|
msg = "%s%r" % (func.__name__, args)
|
||
|
|
if msg[-2:] == ',)': # correct for singleton tuple
|
||
|
|
msg = msg[0:-2] + ')'
|
||
|
|
|
||
|
|
log.info(msg)
|
||
|
|
if not dry_run:
|
||
|
|
func(*args)
|
||
|
|
|
||
|
|
|
||
|
|
def strtobool (val):
|
||
|
|
"""Convert a string representation of truth to true (1) or false (0).
|
||
|
|
|
||
|
|
True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
|
||
|
|
are 'n', 'no', 'f', 'false', 'off', and '0'. Raises ValueError if
|
||
|
|
'val' is anything else.
|
||
|
|
"""
|
||
|
|
val = string.lower(val)
|
||
|
|
if val in ('y', 'yes', 't', 'true', 'on', '1'):
|
||
|
|
return 1
|
||
|
|
elif val in ('n', 'no', 'f', 'false', 'off', '0'):
|
||
|
|
return 0
|
||
|
|
else:
|
||
|
|
raise ValueError, "invalid truth value %r" % (val,)
|
||
|
|
|
||
|
|
|
||
|
|
def byte_compile (py_files,
|
||
|
|
optimize=0, force=0,
|
||
|
|
prefix=None, base_dir=None,
|
||
|
|
verbose=1, dry_run=0,
|
||
|
|
direct=None):
|
||
|
|
"""Byte-compile a collection of Python source files to either .pyc
|
||
|
|
or .pyo files in the same directory. 'py_files' is a list of files
|
||
|
|
to compile; any files that don't end in ".py" are silently skipped.
|
||
|
|
'optimize' must be one of the following:
|
||
|
|
0 - don't optimize (generate .pyc)
|
||
|
|
1 - normal optimization (like "python -O")
|
||
|
|
2 - extra optimization (like "python -OO")
|
||
|
|
If 'force' is true, all files are recompiled regardless of
|
||
|
|
timestamps.
|
||
|
|
|
||
|
|
The source filename encoded in each bytecode file defaults to the
|
||
|
|
filenames listed in 'py_files'; you can modify these with 'prefix' and
|
||
|
|
'basedir'. 'prefix' is a string that will be stripped off of each
|
||
|
|
source filename, and 'base_dir' is a directory name that will be
|
||
|
|
prepended (after 'prefix' is stripped). You can supply either or both
|
||
|
|
(or neither) of 'prefix' and 'base_dir', as you wish.
|
||
|
|
|
||
|
|
If 'dry_run' is true, doesn't actually do anything that would
|
||
|
|
affect the filesystem.
|
||
|
|
|
||
|
|
Byte-compilation is either done directly in this interpreter process
|
||
|
|
with the standard py_compile module, or indirectly by writing a
|
||
|
|
temporary script and executing it. Normally, you should let
|
||
|
|
'byte_compile()' figure out to use direct compilation or not (see
|
||
|
|
the source for details). The 'direct' flag is used by the script
|
||
|
|
generated in indirect mode; unless you know what you're doing, leave
|
||
|
|
it set to None.
|
||
|
|
"""
|
||
|
|
# nothing is done if sys.dont_write_bytecode is True
|
||
|
|
if sys.dont_write_bytecode:
|
||
|
|
raise DistutilsByteCompileError('byte-compiling is disabled.')
|
||
|
|
|
||
|
|
# First, if the caller didn't force us into direct or indirect mode,
|
||
|
|
# figure out which mode we should be in. We take a conservative
|
||
|
|
# approach: choose direct mode *only* if the current interpreter is
|
||
|
|
# in debug mode and optimize is 0. If we're not in debug mode (-O
|
||
|
|
# or -OO), we don't know which level of optimization this
|
||
|
|
# interpreter is running with, so we can't do direct
|
||
|
|
# byte-compilation and be certain that it's the right thing. Thus,
|
||
|
|
# always compile indirectly if the current interpreter is in either
|
||
|
|
# optimize mode, or if either optimization level was requested by
|
||
|
|
# the caller.
|
||
|
|
if direct is None:
|
||
|
|
direct = (__debug__ and optimize == 0)
|
||
|
|
|
||
|
|
# "Indirect" byte-compilation: write a temporary script and then
|
||
|
|
# run it with the appropriate flags.
|
||
|
|
if not direct:
|
||
|
|
try:
|
||
|
|
from tempfile import mkstemp
|
||
|
|
(script_fd, script_name) = mkstemp(".py")
|
||
|
|
except ImportError:
|
||
|
|
from tempfile import mktemp
|
||
|
|
(script_fd, script_name) = None, mktemp(".py")
|
||
|
|
log.info("writing byte-compilation script '%s'", script_name)
|
||
|
|
if not dry_run:
|
||
|
|
if script_fd is not None:
|
||
|
|
script = os.fdopen(script_fd, "w")
|
||
|
|
else:
|
||
|
|
script = open(script_name, "w")
|
||
|
|
|
||
|
|
script.write("""\
|
||
|
|
from distutils.util import byte_compile
|
||
|
|
files = [
|
||
|
|
""")
|
||
|
|
|
||
|
|
# XXX would be nice to write absolute filenames, just for
|
||
|
|
# safety's sake (script should be more robust in the face of
|
||
|
|
# chdir'ing before running it). But this requires abspath'ing
|
||
|
|
# 'prefix' as well, and that breaks the hack in build_lib's
|
||
|
|
# 'byte_compile()' method that carefully tacks on a trailing
|
||
|
|
# slash (os.sep really) to make sure the prefix here is "just
|
||
|
|
# right". This whole prefix business is rather delicate -- the
|
||
|
|
# problem is that it's really a directory, but I'm treating it
|
||
|
|
# as a dumb string, so trailing slashes and so forth matter.
|
||
|
|
|
||
|
|
#py_files = map(os.path.abspath, py_files)
|
||
|
|
#if prefix:
|
||
|
|
# prefix = os.path.abspath(prefix)
|
||
|
|
|
||
|
|
script.write(string.join(map(repr, py_files), ",\n") + "]\n")
|
||
|
|
script.write("""
|
||
|
|
byte_compile(files, optimize=%r, force=%r,
|
||
|
|
prefix=%r, base_dir=%r,
|
||
|
|
verbose=%r, dry_run=0,
|
||
|
|
direct=1)
|
||
|
|
""" % (optimize, force, prefix, base_dir, verbose))
|
||
|
|
|
||
|
|
script.close()
|
||
|
|
|
||
|
|
cmd = [sys.executable, script_name]
|
||
|
|
if optimize == 1:
|
||
|
|
cmd.insert(1, "-O")
|
||
|
|
elif optimize == 2:
|
||
|
|
cmd.insert(1, "-OO")
|
||
|
|
spawn(cmd, dry_run=dry_run)
|
||
|
|
execute(os.remove, (script_name,), "removing %s" % script_name,
|
||
|
|
dry_run=dry_run)
|
||
|
|
|
||
|
|
# "Direct" byte-compilation: use the py_compile module to compile
|
||
|
|
# right here, right now. Note that the script generated in indirect
|
||
|
|
# mode simply calls 'byte_compile()' in direct mode, a weird sort of
|
||
|
|
# cross-process recursion. Hey, it works!
|
||
|
|
else:
|
||
|
|
from py_compile import compile
|
||
|
|
|
||
|
|
for file in py_files:
|
||
|
|
if file[-3:] != ".py":
|
||
|
|
# This lets us be lazy and not filter filenames in
|
||
|
|
# the "install_lib" command.
|
||
|
|
continue
|
||
|
|
|
||
|
|
# Terminology from the py_compile module:
|
||
|
|
# cfile - byte-compiled file
|
||
|
|
# dfile - purported source filename (same as 'file' by default)
|
||
|
|
cfile = file + (__debug__ and "c" or "o")
|
||
|
|
dfile = file
|
||
|
|
if prefix:
|
||
|
|
if file[:len(prefix)] != prefix:
|
||
|
|
raise ValueError, \
|
||
|
|
("invalid prefix: filename %r doesn't start with %r"
|
||
|
|
% (file, prefix))
|
||
|
|
dfile = dfile[len(prefix):]
|
||
|
|
if base_dir:
|
||
|
|
dfile = os.path.join(base_dir, dfile)
|
||
|
|
|
||
|
|
cfile_base = os.path.basename(cfile)
|
||
|
|
if direct:
|
||
|
|
if force or newer(file, cfile):
|
||
|
|
log.info("byte-compiling %s to %s", file, cfile_base)
|
||
|
|
if not dry_run:
|
||
|
|
compile(file, cfile, dfile)
|
||
|
|
else:
|
||
|
|
log.debug("skipping byte-compilation of %s to %s",
|
||
|
|
file, cfile_base)
|
||
|
|
|
||
|
|
# byte_compile ()
|
||
|
|
|
||
|
|
def rfc822_escape (header):
|
||
|
|
"""Return a version of the string escaped for inclusion in an
|
||
|
|
RFC-822 header, by ensuring there are 8 spaces space after each newline.
|
||
|
|
"""
|
||
|
|
lines = string.split(header, '\n')
|
||
|
|
header = string.join(lines, '\n' + 8*' ')
|
||
|
|
return header
|