def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
python类C_EXTENSION的实例源码
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def add_to_path():
"""
Prepends the build directory to the path so pyodbcconf can be imported without installing it.
"""
# Now run the utility
import imp
library_exts = [ t[0] for t in imp.get_suffixes() if t[-1] == imp.C_EXTENSION ]
library_names = [ 'pyodbcconf%s' % ext for ext in library_exts ]
# Only go into directories that match our version number.
dir_suffix = '-%s.%s' % (sys.version_info[0], sys.version_info[1])
build = join(dirname(abspath(__file__)), 'build')
for top, dirs, files in os.walk(build):
dirs = [ d for d in dirs if d.endswith(dir_suffix) ]
for name in library_names:
if name in files:
sys.path.insert(0, top)
return
raise SystemExit('Did not find pyodbcconf')
def add_to_path():
"""
Prepends the build directory to the path so pyodbcconf can be imported without installing it.
"""
# Now run the utility
import imp
library_exts = [ t[0] for t in imp.get_suffixes() if t[-1] == imp.C_EXTENSION ]
library_names = [ 'pyodbcconf%s' % ext for ext in library_exts ]
# Only go into directories that match our version number.
dir_suffix = '-%s.%s' % (sys.version_info[0], sys.version_info[1])
build = join(dirname(abspath(__file__)), 'build')
for top, dirs, files in os.walk(build):
dirs = [ d for d in dirs if d.endswith(dir_suffix) ]
for name in library_names:
if name in files:
sys.path.insert(0, top)
return
raise SystemExit('Did not find pyodbcconf')
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def _reopen(self):
if self.file and self.file.closed:
mod_type = self.etc[2]
if mod_type==imp.PY_SOURCE:
self.file = open(self.filename, 'rU')
elif mod_type in (imp.PY_COMPILED, imp.C_EXTENSION):
self.file = open(self.filename, 'rb')
def get_filename(self, fullname=None):
fullname = self._fix_name(fullname)
mod_type = self.etc[2]
if self.etc[2]==imp.PKG_DIRECTORY:
return self._get_delegate().get_filename()
elif self.etc[2] in (imp.PY_SOURCE, imp.PY_COMPILED, imp.C_EXTENSION):
return self.filename
return None
def iter_importers(fullname=""):
"""Yield PEP 302 importers for the given module name
If fullname contains a '.', the importers will be for the package
containing fullname, otherwise they will be importers for sys.meta_path,
sys.path, and Python's "classic" import machinery, in that order. If
the named module is in a package, that package is imported as a side
effect of invoking this function.
Non PEP 302 mechanisms (e.g. the Windows registry) used by the
standard import machinery to find files in alternative locations
are partially supported, but are searched AFTER sys.path. Normally,
these locations are searched BEFORE sys.path, preventing sys.path
entries from shadowing them.
For this to cause a visible difference in behaviour, there must
be a module or package name that is accessible via both sys.path
and one of the non PEP 302 file system mechanisms. In this case,
the emulation will find the former version, while the builtin
import mechanism will find the latter.
Items of the following types can be affected by this discrepancy:
imp.C_EXTENSION, imp.PY_SOURCE, imp.PY_COMPILED, imp.PKG_DIRECTORY
"""
if fullname.startswith('.'):
raise ImportError("Relative module names not supported")
if '.' in fullname:
# Get the containing package's __path__
pkg = '.'.join(fullname.split('.')[:-1])
if pkg not in sys.modules:
__import__(pkg)
path = getattr(sys.modules[pkg], '__path__', None) or []
else:
for importer in sys.meta_path:
yield importer
path = sys.path
for item in path:
yield get_importer(item)
if '.' not in fullname:
yield ImpImporter()
def load_module(self, name, stuff):
file, filename, info = stuff
(suff, mode, type) = info
try:
if type == BUILTIN_MODULE:
return self.hooks.init_builtin(name)
if type == FROZEN_MODULE:
return self.hooks.init_frozen(name)
if type == C_EXTENSION:
m = self.hooks.load_dynamic(name, filename, file)
elif type == PY_SOURCE:
m = self.hooks.load_source(name, filename, file)
elif type == PY_COMPILED:
m = self.hooks.load_compiled(name, filename, file)
elif type == PKG_DIRECTORY:
m = self.hooks.load_package(name, filename, file)
else:
raise ImportError, "Unrecognized module type (%r) for %s" % \
(type, name)
finally:
if file: file.close()
m.__file__ = filename
return m
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def _extension_suffixes():
return [suffix for suffix, _, type in imp.get_suffixes()
if type == imp.C_EXTENSION]
def _get_so_suffixes():
suffixes = _extension_suffixes()
if not suffixes:
# bah, no C_EXTENSION available. Occurs on pypy without cpyext
if sys.platform == 'win32':
suffixes = [".pyd"]
else:
suffixes = [".so"]
return suffixes
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def _reopen(self):
if self.file and self.file.closed:
mod_type = self.etc[2]
if mod_type==imp.PY_SOURCE:
self.file = open(self.filename, 'rU')
elif mod_type in (imp.PY_COMPILED, imp.C_EXTENSION):
self.file = open(self.filename, 'rb')
def get_filename(self, fullname=None):
fullname = self._fix_name(fullname)
mod_type = self.etc[2]
if self.etc[2]==imp.PKG_DIRECTORY:
return self._get_delegate().get_filename()
elif self.etc[2] in (imp.PY_SOURCE, imp.PY_COMPILED, imp.C_EXTENSION):
return self.filename
return None
def iter_importers(fullname=""):
"""Yield PEP 302 importers for the given module name
If fullname contains a '.', the importers will be for the package
containing fullname, otherwise they will be importers for sys.meta_path,
sys.path, and Python's "classic" import machinery, in that order. If
the named module is in a package, that package is imported as a side
effect of invoking this function.
Non PEP 302 mechanisms (e.g. the Windows registry) used by the
standard import machinery to find files in alternative locations
are partially supported, but are searched AFTER sys.path. Normally,
these locations are searched BEFORE sys.path, preventing sys.path
entries from shadowing them.
For this to cause a visible difference in behaviour, there must
be a module or package name that is accessible via both sys.path
and one of the non PEP 302 file system mechanisms. In this case,
the emulation will find the former version, while the builtin
import mechanism will find the latter.
Items of the following types can be affected by this discrepancy:
imp.C_EXTENSION, imp.PY_SOURCE, imp.PY_COMPILED, imp.PKG_DIRECTORY
"""
if fullname.startswith('.'):
raise ImportError("Relative module names not supported")
if '.' in fullname:
# Get the containing package's __path__
pkg = '.'.join(fullname.split('.')[:-1])
if pkg not in sys.modules:
__import__(pkg)
path = getattr(sys.modules[pkg], '__path__', None) or []
else:
for importer in sys.meta_path:
yield importer
path = sys.path
for item in path:
yield get_importer(item)
if '.' not in fullname:
yield ImpImporter()
def find_library(libname):
"""
Search for 'libname.so'.
Returns library loaded with ctypes.CDLL
Raises OSError if library is not found
"""
base_path = os.path.dirname(__file__)
lib, search_paths = None, []
so_extensions = [ ext for ext, _, typ in imp.get_suffixes()
if typ == imp.C_EXTENSION ]
for extension in so_extensions:
search_paths += [
os.path.abspath(os.path.normpath(
os.path.join( base_path, '..', libname + extension ))),
os.path.abspath(os.path.normpath(
os.path.join( base_path, '../..', libname + extension )))
]
for path in search_paths:
if os.path.exists(path):
lib = path
break
if not lib:
raise OSError('Cant find %s.so. searched at:\n %s' % (
libname, '\n'.join(search_paths)))
return ctypes.CDLL(lib)
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def _extension_suffixes():
return [suffix for suffix, _, type in imp.get_suffixes()
if type == imp.C_EXTENSION]
def _get_so_suffixes():
suffixes = _extension_suffixes()
if not suffixes:
# bah, no C_EXTENSION available. Occurs on pypy without cpyext
if sys.platform == 'win32':
suffixes = [".pyd"]
else:
suffixes = [".so"]
return suffixes
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
def get_abi3_suffix():
"""Return the file extension for an abi3-compliant Extension()"""
for suffix, _, _ in (s for s in imp.get_suffixes() if s[2] == imp.C_EXTENSION):
if '.abi3' in suffix: # Unix
return suffix
elif suffix == '.pyd': # Windows
return suffix
