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initial import of the packaging package in the standard library

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Tarek Ziade 2011-05-19 13:07:25 +02:00
parent 566f8a646e
commit 1231a4e097
193 changed files with 30376 additions and 149 deletions
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277
Lib/sysconfig.py
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@ -1,9 +1,10 @@
"""Provide access to Python's configuration information.
"""Access to Python's configuration information."""
"""
import sys
import os
import re
import sys
from os.path import pardir, realpath
from configparser import RawConfigParser
__all__ = [
'get_config_h_filename',
@ -17,91 +18,51 @@ __all__ = [
'get_python_version',
'get_scheme_names',
'parse_config_h',
]
]
_INSTALL_SCHEMES = {
'posix_prefix': {
'stdlib': '{base}/lib/python{py_version_short}',
'platstdlib': '{platbase}/lib/python{py_version_short}',
'purelib': '{base}/lib/python{py_version_short}/site-packages',
'platlib': '{platbase}/lib/python{py_version_short}/site-packages',
'include':
'{base}/include/python{py_version_short}{abiflags}',
'platinclude':
'{platbase}/include/python{py_version_short}{abiflags}',
'scripts': '{base}/bin',
'data': '{base}',
},
'posix_home': {
'stdlib': '{base}/lib/python',
'platstdlib': '{base}/lib/python',
'purelib': '{base}/lib/python',
'platlib': '{base}/lib/python',
'include': '{base}/include/python',
'platinclude': '{base}/include/python',
'scripts': '{base}/bin',
'data' : '{base}',
},
'nt': {
'stdlib': '{base}/Lib',
'platstdlib': '{base}/Lib',
'purelib': '{base}/Lib/site-packages',
'platlib': '{base}/Lib/site-packages',
'include': '{base}/Include',
'platinclude': '{base}/Include',
'scripts': '{base}/Scripts',
'data' : '{base}',
},
'os2': {
'stdlib': '{base}/Lib',
'platstdlib': '{base}/Lib',
'purelib': '{base}/Lib/site-packages',
'platlib': '{base}/Lib/site-packages',
'include': '{base}/Include',
'platinclude': '{base}/Include',
'scripts': '{base}/Scripts',
'data' : '{base}',
},
'os2_home': {
'stdlib': '{userbase}/lib/python{py_version_short}',
'platstdlib': '{userbase}/lib/python{py_version_short}',
'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
'include': '{userbase}/include/python{py_version_short}',
'scripts': '{userbase}/bin',
'data' : '{userbase}',
},
'nt_user': {
'stdlib': '{userbase}/Python{py_version_nodot}',
'platstdlib': '{userbase}/Python{py_version_nodot}',
'purelib': '{userbase}/Python{py_version_nodot}/site-packages',
'platlib': '{userbase}/Python{py_version_nodot}/site-packages',
'include': '{userbase}/Python{py_version_nodot}/Include',
'scripts': '{userbase}/Scripts',
'data' : '{userbase}',
},
'posix_user': {
'stdlib': '{userbase}/lib/python{py_version_short}',
'platstdlib': '{userbase}/lib/python{py_version_short}',
'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
'include': '{userbase}/include/python{py_version_short}',
'scripts': '{userbase}/bin',
'data' : '{userbase}',
},
'osx_framework_user': {
'stdlib': '{userbase}/lib/python',
'platstdlib': '{userbase}/lib/python',
'purelib': '{userbase}/lib/python/site-packages',
'platlib': '{userbase}/lib/python/site-packages',
'include': '{userbase}/include',
'scripts': '{userbase}/bin',
'data' : '{userbase}',
},
}
# let's read the configuration file
# XXX _CONFIG_DIR will be set by the Makefile later
_CONFIG_DIR = os.path.normpath(os.path.dirname(__file__))
_CONFIG_FILE = os.path.join(_CONFIG_DIR, 'sysconfig.cfg')
_SCHEMES = RawConfigParser()
_SCHEMES.read(_CONFIG_FILE)
_VAR_REPL = re.compile(r'\{([^{]*?)\}')
_SCHEME_KEYS = ('stdlib', 'platstdlib', 'purelib', 'platlib', 'include',
'scripts', 'data')
def _expand_globals(config):
if config.has_section('globals'):
globals = config.items('globals')
else:
globals = tuple()
sections = config.sections()
for section in sections:
if section == 'globals':
continue
for option, value in globals:
if config.has_option(section, option):
continue
config.set(section, option, value)
config.remove_section('globals')
# now expanding local variables defined in the cfg file
#
for section in config.sections():
variables = dict(config.items(section))
def _replacer(matchobj):
name = matchobj.group(1)
if name in variables:
return variables[name]
return matchobj.group(0)
for option, value in config.items(section):
config.set(section, option, _VAR_REPL.sub(_replacer, value))
_expand_globals(_SCHEMES)
# FIXME don't rely on sys.version here, its format is an implementatin detail
# of CPython, use sys.version_info or sys.hexversion
_PY_VERSION = sys.version.split()[0]
_PY_VERSION_SHORT = sys.version[:3]
_PY_VERSION_SHORT_NO_DOT = _PY_VERSION[0] + _PY_VERSION[2]
@ -110,6 +71,7 @@ _EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
_CONFIG_VARS = None
_USER_BASE = None
def _safe_realpath(path):
try:
return realpath(path)
@ -132,6 +94,7 @@ if os.name == "nt" and "\\pc\\v" in _PROJECT_BASE[-10:].lower():
if os.name == "nt" and "\\pcbuild\\amd64" in _PROJECT_BASE[-14:].lower():
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
def is_python_build():
for fn in ("Setup.dist", "Setup.local"):
if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
@ -142,17 +105,25 @@ _PYTHON_BUILD = is_python_build()
if _PYTHON_BUILD:
for scheme in ('posix_prefix', 'posix_home'):
_INSTALL_SCHEMES[scheme]['include'] = '{srcdir}/Include'
_INSTALL_SCHEMES[scheme]['platinclude'] = '{projectbase}/.'
_SCHEMES.set(scheme, 'include', '{srcdir}/Include')
_SCHEMES.set(scheme, 'platinclude', '{projectbase}/.')
def _subst_vars(path, local_vars):
"""In the string `path`, replace tokens like {some.thing} with the
corresponding value from the map `local_vars`.
If there is no corresponding value, leave the token unchanged.
"""
def _replacer(matchobj):
name = matchobj.group(1)
if name in local_vars:
return local_vars[name]
elif name in os.environ:
return os.environ[name]
return matchobj.group(0)
return _VAR_REPL.sub(_replacer, path)
def _subst_vars(s, local_vars):
try:
return s.format(**local_vars)
except KeyError:
try:
return s.format(**os.environ)
except KeyError as var:
raise AttributeError('{%s}' % var)
def _extend_dict(target_dict, other_dict):
target_keys = target_dict.keys()
@ -161,41 +132,63 @@ def _extend_dict(target_dict, other_dict):
continue
target_dict[key] = value
def _expand_vars(scheme, vars):
res = {}
if vars is None:
vars = {}
_extend_dict(vars, get_config_vars())
for key, value in _INSTALL_SCHEMES[scheme].items():
for key, value in _SCHEMES.items(scheme):
if os.name in ('posix', 'nt'):
value = os.path.expanduser(value)
res[key] = os.path.normpath(_subst_vars(value, vars))
return res
def format_value(value, vars):
def _replacer(matchobj):
name = matchobj.group(1)
if name in vars:
return vars[name]
return matchobj.group(0)
return _VAR_REPL.sub(_replacer, value)
def _get_default_scheme():
if os.name == 'posix':
# the default scheme for posix is posix_prefix
return 'posix_prefix'
return os.name
def _getuserbase():
env_base = os.environ.get("PYTHONUSERBASE", None)
def joinuser(*args):
return os.path.expanduser(os.path.join(*args))
# what about 'os2emx', 'riscos' ?
if os.name == "nt":
base = os.environ.get("APPDATA") or "~"
return env_base if env_base else joinuser(base, "Python")
if env_base:
return env_base
else:
return joinuser(base, "Python")
if sys.platform == "darwin":
framework = get_config_var("PYTHONFRAMEWORK")
if framework:
return env_base if env_base else joinuser("~", "Library", framework, "%d.%d"%(
sys.version_info[:2]))
if env_base:
return env_base
else:
return joinuser("~", "Library", framework, "%d.%d" %
sys.version_info[:2])
return env_base if env_base else joinuser("~", ".local")
if env_base:
return env_base
else:
return joinuser("~", ".local")
def _parse_makefile(filename, vars=None):
@ -205,7 +198,6 @@ def _parse_makefile(filename, vars=None):
optional dictionary is passed in as the second argument, it is
used instead of a new dictionary.
"""
import re
# Regexes needed for parsing Makefile (and similar syntaxes,
# like old-style Setup files).
_variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)")
@ -267,7 +259,8 @@ def _parse_makefile(filename, vars=None):
item = os.environ[n]
elif n in renamed_variables:
if name.startswith('PY_') and name[3:] in renamed_variables:
if (name.startswith('PY_') and
name[3:] in renamed_variables):
item = ""
elif 'PY_' + n in notdone:
@ -300,7 +293,6 @@ def _parse_makefile(filename, vars=None):
if name not in done:
done[name] = value
else:
# bogus variable reference; just drop it since we can't deal
variables.remove(name)
@ -319,9 +311,11 @@ def get_makefile_filename():
"""Return the path of the Makefile."""
if _PYTHON_BUILD:
return os.path.join(_PROJECT_BASE, "Makefile")
return os.path.join(get_path('stdlib'),
'config-{}{}'.format(_PY_VERSION_SHORT, sys.abiflags),
'Makefile')
if hasattr(sys, 'abiflags'):
config_dir_name = 'config-%s%s' % (_PY_VERSION_SHORT, sys.abiflags)
else:
config_dir_name = 'config'
return os.path.join(get_path('stdlib'), config_dir_name, 'Makefile')
def _init_posix(vars):
@ -351,6 +345,7 @@ def _init_posix(vars):
if _PYTHON_BUILD:
vars['LDSHARED'] = vars['BLDSHARED']
def _init_non_posix(vars):
"""Initialize the module as appropriate for NT"""
# set basic install directories
@ -374,7 +369,6 @@ def parse_config_h(fp, vars=None):
optional dictionary is passed in as the second argument, it is
used instead of a new dictionary.
"""
import re
if vars is None:
vars = {}
define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
@ -387,8 +381,10 @@ def parse_config_h(fp, vars=None):
m = define_rx.match(line)
if m:
n, v = m.group(1, 2)
try: v = int(v)
except ValueError: pass
try:
v = int(v)
except ValueError:
pass
vars[n] = v
else:
m = undef_rx.match(line)
@ -396,6 +392,7 @@ def parse_config_h(fp, vars=None):
vars[m.group(1)] = 0
return vars
def get_config_h_filename():
"""Return the path of pyconfig.h."""
if _PYTHON_BUILD:
@ -407,15 +404,17 @@ def get_config_h_filename():
inc_dir = get_path('platinclude')
return os.path.join(inc_dir, 'pyconfig.h')
def get_scheme_names():
"""Return a tuple containing the schemes names."""
schemes = list(_INSTALL_SCHEMES.keys())
schemes.sort()
return tuple(schemes)
return tuple(sorted(_SCHEMES.sections()))
def get_path_names():
"""Return a tuple containing the paths names."""
return _SCHEME_KEYS
# xxx see if we want a static list
return _SCHEMES.options('posix_prefix')
def get_paths(scheme=_get_default_scheme(), vars=None, expand=True):
"""Return a mapping containing an install scheme.
@ -426,7 +425,8 @@ def get_paths(scheme=_get_default_scheme(), vars=None, expand=True):
if expand:
return _expand_vars(scheme, vars)
else:
return _INSTALL_SCHEMES[scheme]
return dict(_SCHEMES.items(scheme))
def get_path(name, scheme=_get_default_scheme(), vars=None, expand=True):
"""Return a path corresponding to the scheme.
@ -435,6 +435,7 @@ def get_path(name, scheme=_get_default_scheme(), vars=None, expand=True):
"""
return get_paths(scheme, vars, expand)[name]
def get_config_vars(*args):
"""With no arguments, return a dictionary of all configuration
variables relevant for the current platform.
@ -445,13 +446,12 @@ def get_config_vars(*args):
With arguments, return a list of values that result from looking up
each argument in the configuration variable dictionary.
"""
import re
global _CONFIG_VARS
if _CONFIG_VARS is None:
_CONFIG_VARS = {}
# Normalized versions of prefix and exec_prefix are handy to have;
# in fact, these are the standard versions used most places in the
# Distutils.
# packaging module.
_CONFIG_VARS['prefix'] = _PREFIX
_CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
_CONFIG_VARS['py_version'] = _PY_VERSION
@ -473,14 +473,14 @@ def get_config_vars(*args):
# Setting 'userbase' is done below the call to the
# init function to enable using 'get_config_var' in
# the init-function.
_CONFIG_VARS['userbase'] = _getuserbase()
if sys.version >= '2.6':
_CONFIG_VARS['userbase'] = _getuserbase()
if 'srcdir' not in _CONFIG_VARS:
_CONFIG_VARS['srcdir'] = _PROJECT_BASE
else:
_CONFIG_VARS['srcdir'] = _safe_realpath(_CONFIG_VARS['srcdir'])
# Convert srcdir into an absolute path if it appears necessary.
# Normally it is relative to the build directory. However, during
# testing, for example, we might be running a non-installed python
@ -500,7 +500,7 @@ def get_config_vars(*args):
_CONFIG_VARS['srcdir'] = os.path.normpath(srcdir)
if sys.platform == 'darwin':
kernel_version = os.uname()[2] # Kernel version (8.4.3)
kernel_version = os.uname()[2] # Kernel version (8.4.3)
major_version = int(kernel_version.split('.')[0])
if major_version < 8:
@ -566,6 +566,7 @@ def get_config_vars(*args):
else:
return _CONFIG_VARS
def get_config_var(name):
"""Return the value of a single variable using the dictionary returned by
'get_config_vars()'.
@ -574,6 +575,7 @@ def get_config_var(name):
"""
return get_config_vars().get(name)
def get_platform():
"""Return a string that identifies the current platform.
@ -599,7 +601,6 @@ def get_platform():
For other non-POSIX platforms, currently just returns 'sys.platform'.
"""
import re
if os.name == 'nt':
# sniff sys.version for architecture.
prefix = " bit ("
@ -644,7 +645,7 @@ def get_platform():
return "%s-%s.%s" % (osname, version, release)
elif osname[:6] == "cygwin":
osname = "cygwin"
rel_re = re.compile (r'[\d.]+')
rel_re = re.compile(r'[\d.]+')
m = rel_re.match(release)
if m:
release = m.group()
@ -675,14 +676,13 @@ def get_platform():
pass
else:
try:
m = re.search(
r'<key>ProductUserVisibleVersion</key>\s*' +
r'<string>(.*?)</string>', f.read())
if m is not None:
macrelease = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
m = re.search(r'<key>ProductUserVisibleVersion</key>\s*'
r'<string>(.*?)</string>', f.read())
finally:
f.close()
if m is not None:
macrelease = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
if not macver:
macver = macrelease
@ -691,8 +691,8 @@ def get_platform():
release = macver
osname = "macosx"
if (macrelease + '.') >= '10.4.' and \
'-arch' in get_config_vars().get('CFLAGS', '').strip():
if ((macrelease + '.') >= '10.4.' and
'-arch' in get_config_vars().get('CFLAGS', '').strip()):
# The universal build will build fat binaries, but not on
# systems before 10.4
#
@ -719,7 +719,7 @@ def get_platform():
machine = 'universal'
else:
raise ValueError(
"Don't know machine value for archs=%r"%(archs,))
"Don't know machine value for archs=%r" % (archs,))
elif machine == 'i386':
# On OSX the machine type returned by uname is always the
@ -742,21 +742,24 @@ def get_platform():
def get_python_version():
return _PY_VERSION_SHORT
def _print_dict(title, data):
for index, (key, value) in enumerate(sorted(data.items())):
if index == 0:
print('{0}: '.format(title))
print('\t{0} = "{1}"'.format(key, value))
print('%s: ' % (title))
print('\t%s = "%s"' % (key, value))
def _main():
"""Display all information sysconfig detains."""
print('Platform: "{0}"'.format(get_platform()))
print('Python version: "{0}"'.format(get_python_version()))
print('Current installation scheme: "{0}"'.format(_get_default_scheme()))
print('Platform: "%s"' % get_platform())
print('Python version: "%s"' % get_python_version())
print('Current installation scheme: "%s"' % _get_default_scheme())
print('')
_print_dict('Paths', get_paths())
print('')
print()
_print_dict('Variables', get_config_vars())
if __name__ == '__main__':
_main()