mirror of
git://projects.qi-hardware.com/openwrt-packages.git
synced 2024-11-23 11:12:50 +02:00
566 lines
18 KiB
Python
566 lines
18 KiB
Python
"""Append module search paths for third-party packages to sys.path.
|
|
|
|
****************************************************************
|
|
* This module is automatically imported during initialization. *
|
|
****************************************************************
|
|
|
|
In earlier versions of Python (up to 1.5a3), scripts or modules that
|
|
needed to use site-specific modules would place ``import site''
|
|
somewhere near the top of their code. Because of the automatic
|
|
import, this is no longer necessary (but code that does it still
|
|
works).
|
|
|
|
This will append site-specific paths to the module search path. On
|
|
Unix (including Mac OSX), it starts with sys.prefix and
|
|
sys.exec_prefix (if different) and appends
|
|
lib/python<version>/site-packages as well as lib/site-python.
|
|
On other platforms (such as Windows), it tries each of the
|
|
prefixes directly, as well as with lib/site-packages appended. The
|
|
resulting directories, if they exist, are appended to sys.path, and
|
|
also inspected for path configuration files.
|
|
|
|
A path configuration file is a file whose name has the form
|
|
<package>.pth; its contents are additional directories (one per line)
|
|
to be added to sys.path. Non-existing directories (or
|
|
non-directories) are never added to sys.path; no directory is added to
|
|
sys.path more than once. Blank lines and lines beginning with
|
|
'#' are skipped. Lines starting with 'import' are executed.
|
|
|
|
For example, suppose sys.prefix and sys.exec_prefix are set to
|
|
/usr/local and there is a directory /usr/local/lib/python2.5/site-packages
|
|
with three subdirectories, foo, bar and spam, and two path
|
|
configuration files, foo.pth and bar.pth. Assume foo.pth contains the
|
|
following:
|
|
|
|
# foo package configuration
|
|
foo
|
|
bar
|
|
bletch
|
|
|
|
and bar.pth contains:
|
|
|
|
# bar package configuration
|
|
bar
|
|
|
|
Then the following directories are added to sys.path, in this order:
|
|
|
|
/usr/local/lib/python2.5/site-packages/bar
|
|
/usr/local/lib/python2.5/site-packages/foo
|
|
|
|
Note that bletch is omitted because it doesn't exist; bar precedes foo
|
|
because bar.pth comes alphabetically before foo.pth; and spam is
|
|
omitted because it is not mentioned in either path configuration file.
|
|
|
|
After these path manipulations, an attempt is made to import a module
|
|
named sitecustomize, which can perform arbitrary additional
|
|
site-specific customizations. If this import fails with an
|
|
ImportError exception, it is silently ignored.
|
|
|
|
"""
|
|
|
|
import sys
|
|
import os
|
|
import __builtin__
|
|
|
|
# Prefixes for site-packages; add additional prefixes like /usr/local here
|
|
PREFIXES = [sys.prefix, sys.exec_prefix]
|
|
# Enable per user site-packages directory
|
|
# set it to False to disable the feature or True to force the feature
|
|
ENABLE_USER_SITE = None
|
|
# for distutils.commands.install
|
|
USER_SITE = None
|
|
USER_BASE = None
|
|
|
|
|
|
def makepath(*paths):
|
|
dir = os.path.abspath(os.path.join(*paths))
|
|
return dir, os.path.normcase(dir)
|
|
|
|
|
|
def abs__file__():
|
|
"""Set all module' __file__ attribute to an absolute path"""
|
|
for m in sys.modules.values():
|
|
if hasattr(m, '__loader__'):
|
|
continue # don't mess with a PEP 302-supplied __file__
|
|
try:
|
|
m.__file__ = os.path.abspath(m.__file__)
|
|
except AttributeError:
|
|
continue
|
|
|
|
|
|
def removeduppaths():
|
|
""" Remove duplicate entries from sys.path along with making them
|
|
absolute"""
|
|
# This ensures that the initial path provided by the interpreter contains
|
|
# only absolute pathnames, even if we're running from the build directory.
|
|
L = []
|
|
known_paths = set()
|
|
for dir in sys.path:
|
|
# Filter out duplicate paths (on case-insensitive file systems also
|
|
# if they only differ in case); turn relative paths into absolute
|
|
# paths.
|
|
dir, dircase = makepath(dir)
|
|
if not dircase in known_paths:
|
|
L.append(dir)
|
|
known_paths.add(dircase)
|
|
sys.path[:] = L
|
|
return known_paths
|
|
|
|
# XXX This should not be part of site.py, since it is needed even when
|
|
# using the -S option for Python. See http://www.python.org/sf/586680
|
|
def addbuilddir():
|
|
"""Append ./build/lib.<platform> in case we're running in the build dir
|
|
(especially for Guido :-)"""
|
|
from distutils.util import get_platform
|
|
s = "build/lib.%s-%.3s" % (get_platform(), sys.version)
|
|
if hasattr(sys, 'gettotalrefcount'):
|
|
s += '-pydebug'
|
|
s = os.path.join(os.path.dirname(sys.path[-1]), s)
|
|
sys.path.append(s)
|
|
|
|
|
|
def _init_pathinfo():
|
|
"""Return a set containing all existing directory entries from sys.path"""
|
|
d = set()
|
|
for dir in sys.path:
|
|
try:
|
|
if os.path.isdir(dir):
|
|
dir, dircase = makepath(dir)
|
|
d.add(dircase)
|
|
except TypeError:
|
|
continue
|
|
return d
|
|
|
|
|
|
def addpackage(sitedir, name, known_paths):
|
|
"""Process a .pth file within the site-packages directory:
|
|
For each line in the file, either combine it with sitedir to a path
|
|
and add that to known_paths, or execute it if it starts with 'import '.
|
|
"""
|
|
if known_paths is None:
|
|
_init_pathinfo()
|
|
reset = 1
|
|
else:
|
|
reset = 0
|
|
fullname = os.path.join(sitedir, name)
|
|
try:
|
|
f = open(fullname, "rU")
|
|
except IOError:
|
|
return
|
|
with f:
|
|
for line in f:
|
|
if line.startswith("#"):
|
|
continue
|
|
if line.startswith(("import ", "import\t")):
|
|
exec line
|
|
continue
|
|
line = line.rstrip()
|
|
dir, dircase = makepath(sitedir, line)
|
|
if not dircase in known_paths and os.path.exists(dir):
|
|
sys.path.append(dir)
|
|
known_paths.add(dircase)
|
|
if reset:
|
|
known_paths = None
|
|
return known_paths
|
|
|
|
|
|
def addsitedir(sitedir, known_paths=None):
|
|
"""Add 'sitedir' argument to sys.path if missing and handle .pth files in
|
|
'sitedir'"""
|
|
if known_paths is None:
|
|
known_paths = _init_pathinfo()
|
|
reset = 1
|
|
else:
|
|
reset = 0
|
|
sitedir, sitedircase = makepath(sitedir)
|
|
if not sitedircase in known_paths:
|
|
sys.path.append(sitedir) # Add path component
|
|
try:
|
|
names = os.listdir(sitedir)
|
|
except os.error:
|
|
return
|
|
dotpth = os.extsep + "pth"
|
|
names = [name for name in names if name.endswith(dotpth)]
|
|
for name in sorted(names):
|
|
addpackage(sitedir, name, known_paths)
|
|
if reset:
|
|
known_paths = None
|
|
return known_paths
|
|
|
|
|
|
def check_enableusersite():
|
|
"""Check if user site directory is safe for inclusion
|
|
|
|
The function tests for the command line flag (including environment var),
|
|
process uid/gid equal to effective uid/gid.
|
|
|
|
None: Disabled for security reasons
|
|
False: Disabled by user (command line option)
|
|
True: Safe and enabled
|
|
"""
|
|
if sys.flags.no_user_site:
|
|
return False
|
|
|
|
if hasattr(os, "getuid") and hasattr(os, "geteuid"):
|
|
# check process uid == effective uid
|
|
if os.geteuid() != os.getuid():
|
|
return None
|
|
if hasattr(os, "getgid") and hasattr(os, "getegid"):
|
|
# check process gid == effective gid
|
|
if os.getegid() != os.getgid():
|
|
return None
|
|
|
|
return True
|
|
|
|
|
|
def addusersitepackages(known_paths):
|
|
"""Add a per user site-package to sys.path
|
|
|
|
Each user has its own python directory with site-packages in the
|
|
home directory.
|
|
|
|
USER_BASE is the root directory for all Python versions
|
|
|
|
USER_SITE is the user specific site-packages directory
|
|
|
|
USER_SITE/.. can be used for data.
|
|
"""
|
|
global USER_BASE, USER_SITE, ENABLE_USER_SITE
|
|
env_base = os.environ.get("PYTHONUSERBASE", None)
|
|
|
|
def joinuser(*args):
|
|
return os.path.expanduser(os.path.join(*args))
|
|
|
|
#if sys.platform in ('os2emx', 'riscos'):
|
|
# # Don't know what to put here
|
|
# USER_BASE = ''
|
|
# USER_SITE = ''
|
|
if os.name == "nt":
|
|
base = os.environ.get("APPDATA") or "~"
|
|
USER_BASE = env_base if env_base else joinuser(base, "Python")
|
|
USER_SITE = os.path.join(USER_BASE,
|
|
"Python" + sys.version[0] + sys.version[2],
|
|
"site-packages")
|
|
else:
|
|
USER_BASE = env_base if env_base else joinuser("~", ".local")
|
|
USER_SITE = os.path.join(USER_BASE, "lib",
|
|
"python" + sys.version[:3],
|
|
"site-packages")
|
|
|
|
if ENABLE_USER_SITE and os.path.isdir(USER_SITE):
|
|
addsitedir(USER_SITE, known_paths)
|
|
return known_paths
|
|
|
|
|
|
def addsitepackages(known_paths):
|
|
"""Add site-packages (and possibly site-python) to sys.path"""
|
|
sitedirs = []
|
|
seen = []
|
|
|
|
for prefix in PREFIXES:
|
|
if not prefix or prefix in seen:
|
|
continue
|
|
seen.append(prefix)
|
|
|
|
if sys.platform in ('os2emx', 'riscos'):
|
|
sitedirs.append(os.path.join(prefix, "Lib", "site-packages"))
|
|
elif os.sep == '/':
|
|
sitedirs.append(os.path.join(prefix, "lib",
|
|
"python" + sys.version[:3],
|
|
"site-packages"))
|
|
sitedirs.append(os.path.join(prefix, "lib", "site-python"))
|
|
else:
|
|
sitedirs.append(prefix)
|
|
sitedirs.append(os.path.join(prefix, "lib", "site-packages"))
|
|
|
|
if sys.platform == "darwin":
|
|
# for framework builds *only* we add the standard Apple
|
|
# locations. Currently only per-user, but /Library and
|
|
# /Network/Library could be added too
|
|
if 'Python.framework' in prefix:
|
|
sitedirs.append(
|
|
os.path.expanduser(
|
|
os.path.join("~", "Library", "Python",
|
|
sys.version[:3], "site-packages")))
|
|
|
|
for sitedir in sitedirs:
|
|
if os.path.isdir(sitedir):
|
|
addsitedir(sitedir, known_paths)
|
|
|
|
return known_paths
|
|
|
|
|
|
def setBEGINLIBPATH():
|
|
"""The OS/2 EMX port has optional extension modules that do double duty
|
|
as DLLs (and must use the .DLL file extension) for other extensions.
|
|
The library search path needs to be amended so these will be found
|
|
during module import. Use BEGINLIBPATH so that these are at the start
|
|
of the library search path.
|
|
|
|
"""
|
|
dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
|
|
libpath = os.environ['BEGINLIBPATH'].split(';')
|
|
if libpath[-1]:
|
|
libpath.append(dllpath)
|
|
else:
|
|
libpath[-1] = dllpath
|
|
os.environ['BEGINLIBPATH'] = ';'.join(libpath)
|
|
|
|
|
|
def setquit():
|
|
"""Define new built-ins 'quit' and 'exit'.
|
|
These are simply strings that display a hint on how to exit.
|
|
|
|
"""
|
|
if os.sep == ':':
|
|
eof = 'Cmd-Q'
|
|
elif os.sep == '\\':
|
|
eof = 'Ctrl-Z plus Return'
|
|
else:
|
|
eof = 'Ctrl-D (i.e. EOF)'
|
|
|
|
class Quitter(object):
|
|
def __init__(self, name):
|
|
self.name = name
|
|
def __repr__(self):
|
|
return 'Use %s() or %s to exit' % (self.name, eof)
|
|
def __call__(self, code=None):
|
|
# Shells like IDLE catch the SystemExit, but listen when their
|
|
# stdin wrapper is closed.
|
|
try:
|
|
sys.stdin.close()
|
|
except:
|
|
pass
|
|
raise SystemExit(code)
|
|
__builtin__.quit = Quitter('quit')
|
|
__builtin__.exit = Quitter('exit')
|
|
|
|
|
|
class _Printer(object):
|
|
"""interactive prompt objects for printing the license text, a list of
|
|
contributors and the copyright notice."""
|
|
|
|
MAXLINES = 23
|
|
|
|
def __init__(self, name, data, files=(), dirs=()):
|
|
self.__name = name
|
|
self.__data = data
|
|
self.__files = files
|
|
self.__dirs = dirs
|
|
self.__lines = None
|
|
|
|
def __setup(self):
|
|
if self.__lines:
|
|
return
|
|
data = None
|
|
for dir in self.__dirs:
|
|
for filename in self.__files:
|
|
filename = os.path.join(dir, filename)
|
|
try:
|
|
fp = file(filename, "rU")
|
|
data = fp.read()
|
|
fp.close()
|
|
break
|
|
except IOError:
|
|
pass
|
|
if data:
|
|
break
|
|
if not data:
|
|
data = self.__data
|
|
self.__lines = data.split('\n')
|
|
self.__linecnt = len(self.__lines)
|
|
|
|
def __repr__(self):
|
|
self.__setup()
|
|
if len(self.__lines) <= self.MAXLINES:
|
|
return "\n".join(self.__lines)
|
|
else:
|
|
return "Type %s() to see the full %s text" % ((self.__name,)*2)
|
|
|
|
def __call__(self):
|
|
self.__setup()
|
|
prompt = 'Hit Return for more, or q (and Return) to quit: '
|
|
lineno = 0
|
|
while 1:
|
|
try:
|
|
for i in range(lineno, lineno + self.MAXLINES):
|
|
print self.__lines[i]
|
|
except IndexError:
|
|
break
|
|
else:
|
|
lineno += self.MAXLINES
|
|
key = None
|
|
while key is None:
|
|
key = raw_input(prompt)
|
|
if key not in ('', 'q'):
|
|
key = None
|
|
if key == 'q':
|
|
break
|
|
|
|
def setcopyright():
|
|
"""Set 'copyright' and 'credits' in __builtin__"""
|
|
__builtin__.copyright = _Printer("copyright", sys.copyright)
|
|
if sys.platform[:4] == 'java':
|
|
__builtin__.credits = _Printer(
|
|
"credits",
|
|
"Jython is maintained by the Jython developers (www.jython.org).")
|
|
else:
|
|
__builtin__.credits = _Printer("credits", """\
|
|
Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
|
|
for supporting Python development. See www.python.org for more information.""")
|
|
here = os.path.dirname(os.__file__)
|
|
__builtin__.license = _Printer(
|
|
"license", "See http://www.python.org/%.3s/license.html" % sys.version,
|
|
["LICENSE.txt", "LICENSE"],
|
|
[os.path.join(here, os.pardir), here, os.curdir])
|
|
|
|
|
|
class _Helper(object):
|
|
"""Define the built-in 'help'.
|
|
This is a wrapper around pydoc.help (with a twist).
|
|
|
|
"""
|
|
|
|
def __repr__(self):
|
|
return "Type help() for interactive help, " \
|
|
"or help(object) for help about object."
|
|
def __call__(self, *args, **kwds):
|
|
import pydoc
|
|
return pydoc.help(*args, **kwds)
|
|
|
|
def sethelper():
|
|
__builtin__.help = _Helper()
|
|
|
|
def aliasmbcs():
|
|
"""On Windows, some default encodings are not provided by Python,
|
|
while they are always available as "mbcs" in each locale. Make
|
|
them usable by aliasing to "mbcs" in such a case."""
|
|
if sys.platform == 'win32':
|
|
import locale, codecs
|
|
enc = locale.getdefaultlocale()[1]
|
|
if enc.startswith('cp'): # "cp***" ?
|
|
try:
|
|
codecs.lookup(enc)
|
|
except LookupError:
|
|
import encodings
|
|
encodings._cache[enc] = encodings._unknown
|
|
encodings.aliases.aliases[enc] = 'mbcs'
|
|
|
|
def setencoding():
|
|
"""Set the string encoding used by the Unicode implementation. The
|
|
default is 'ascii', but if you're willing to experiment, you can
|
|
change this."""
|
|
encoding = "ascii" # Default value set by _PyUnicode_Init()
|
|
if 0:
|
|
# Enable to support locale aware default string encodings.
|
|
import locale
|
|
loc = locale.getdefaultlocale()
|
|
if loc[1]:
|
|
encoding = loc[1]
|
|
if 0:
|
|
# Enable to switch off string to Unicode coercion and implicit
|
|
# Unicode to string conversion.
|
|
encoding = "undefined"
|
|
if encoding != "ascii":
|
|
# On Non-Unicode builds this will raise an AttributeError...
|
|
sys.setdefaultencoding(encoding) # Needs Python Unicode build !
|
|
|
|
|
|
def execsitecustomize():
|
|
"""Run custom site specific code, if available."""
|
|
try:
|
|
import sitecustomize
|
|
except ImportError:
|
|
pass
|
|
|
|
|
|
def execusercustomize():
|
|
"""Run custom user specific code, if available."""
|
|
try:
|
|
import usercustomize
|
|
except ImportError:
|
|
pass
|
|
|
|
|
|
def main():
|
|
global ENABLE_USER_SITE
|
|
|
|
abs__file__()
|
|
known_paths = removeduppaths()
|
|
if (os.name == "posix" and sys.path and
|
|
os.path.basename(sys.path[-1]) == "Modules"):
|
|
addbuilddir()
|
|
if ENABLE_USER_SITE is None:
|
|
ENABLE_USER_SITE = check_enableusersite()
|
|
known_paths = addusersitepackages(known_paths)
|
|
known_paths = addsitepackages(known_paths)
|
|
if sys.platform == 'os2emx':
|
|
setBEGINLIBPATH()
|
|
setquit()
|
|
setcopyright()
|
|
sethelper()
|
|
aliasmbcs()
|
|
setencoding()
|
|
execsitecustomize()
|
|
if ENABLE_USER_SITE:
|
|
execusercustomize()
|
|
# Remove sys.setdefaultencoding() so that users cannot change the
|
|
# encoding after initialization. The test for presence is needed when
|
|
# this module is run as a script, because this code is executed twice.
|
|
if hasattr(sys, "setdefaultencoding"):
|
|
del sys.setdefaultencoding
|
|
|
|
main()
|
|
|
|
def _script():
|
|
help = """\
|
|
%s [--user-base] [--user-site]
|
|
|
|
Without arguments print some useful information
|
|
With arguments print the value of USER_BASE and/or USER_SITE separated
|
|
by '%s'.
|
|
|
|
Exit codes with --user-base or --user-site:
|
|
0 - user site directory is enabled
|
|
1 - user site directory is disabled by user
|
|
2 - uses site directory is disabled by super user
|
|
or for security reasons
|
|
>2 - unknown error
|
|
"""
|
|
args = sys.argv[1:]
|
|
if not args:
|
|
print "sys.path = ["
|
|
for dir in sys.path:
|
|
print " %r," % (dir,)
|
|
print "]"
|
|
print "USER_BASE: %r (%s)" % (USER_BASE,
|
|
"exists" if os.path.isdir(USER_BASE) else "doesn't exist")
|
|
print "USER_SITE: %r (%s)" % (USER_SITE,
|
|
"exists" if os.path.isdir(USER_SITE) else "doesn't exist")
|
|
print "ENABLE_USER_SITE: %r" % ENABLE_USER_SITE
|
|
sys.exit(0)
|
|
|
|
buffer = []
|
|
if '--user-base' in args:
|
|
buffer.append(USER_BASE)
|
|
if '--user-site' in args:
|
|
buffer.append(USER_SITE)
|
|
|
|
if buffer:
|
|
print os.pathsep.join(buffer)
|
|
if ENABLE_USER_SITE:
|
|
sys.exit(0)
|
|
elif ENABLE_USER_SITE is False:
|
|
sys.exit(1)
|
|
elif ENABLE_USER_SITE is None:
|
|
sys.exit(2)
|
|
else:
|
|
sys.exit(3)
|
|
else:
|
|
import textwrap
|
|
print textwrap.dedent(help % (sys.argv[0], os.pathsep))
|
|
sys.exit(10)
|
|
|
|
if __name__ == '__main__':
|
|
_script()
|