122 lines
3.7 KiB
Python
122 lines
3.7 KiB
Python
import sys, os
|
|
|
|
# find_library(name) returns the pathname of a library, or None.
|
|
if os.name == "nt":
|
|
def find_library(name):
|
|
# See MSDN for the REAL search order.
|
|
for directory in os.environ['PATH'].split(os.pathsep):
|
|
fname = os.path.join(directory, name)
|
|
if os.path.exists(fname):
|
|
return fname
|
|
if fname.lower().endswith(".dll"):
|
|
continue
|
|
fname = fname + ".dll"
|
|
if os.path.exists(fname):
|
|
return fname
|
|
return None
|
|
|
|
if os.name == "ce":
|
|
# search path according to MSDN:
|
|
# - absolute path specified by filename
|
|
# - The .exe launch directory
|
|
# - the Windows directory
|
|
# - ROM dll files (where are they?)
|
|
# - OEM specified search path: HKLM\Loader\SystemPath
|
|
def find_library(name):
|
|
return name
|
|
|
|
if os.name == "posix" and sys.platform == "darwin":
|
|
from ctypes.macholib.dyld import dyld_find as _dyld_find
|
|
def find_library(name):
|
|
possible = ['lib%s.dylib' % name,
|
|
'%s.dylib' % name,
|
|
'%s.framework/%s' % (name, name)]
|
|
for name in possible:
|
|
try:
|
|
return _dyld_find(name)
|
|
except ValueError:
|
|
continue
|
|
return None
|
|
|
|
elif os.name == "posix":
|
|
# Andreas Degert's find functions, using gcc, /sbin/ldconfig, objdump
|
|
import re, tempfile, errno
|
|
|
|
def _findLib_gcc(name):
|
|
expr = '[^\(\)\s]*lib%s\.[^\(\)\s]*' % name
|
|
cmd = 'if type gcc &>/dev/null; then CC=gcc; else CC=cc; fi;' \
|
|
'$CC -Wl,-t -o /dev/null 2>&1 -l' + name
|
|
try:
|
|
fdout, outfile = tempfile.mkstemp()
|
|
fd = os.popen(cmd)
|
|
trace = fd.read()
|
|
err = fd.close()
|
|
finally:
|
|
try:
|
|
os.unlink(outfile)
|
|
except OSError, e:
|
|
if e.errno != errno.ENOENT:
|
|
raise
|
|
res = re.search(expr, trace)
|
|
if not res:
|
|
return None
|
|
return res.group(0)
|
|
|
|
def _findLib_ld(name):
|
|
expr = '/[^\(\)\s]*lib%s\.[^\(\)\s]*' % name
|
|
res = re.search(expr, os.popen('/sbin/ldconfig -p 2>/dev/null').read())
|
|
if not res:
|
|
# Hm, this works only for libs needed by the python executable.
|
|
cmd = 'ldd %s 2>/dev/null' % sys.executable
|
|
res = re.search(expr, os.popen(cmd).read())
|
|
if not res:
|
|
return None
|
|
return res.group(0)
|
|
|
|
def _get_soname(f):
|
|
cmd = "objdump -p -j .dynamic 2>/dev/null " + f
|
|
res = re.search(r'\sSONAME\s+([^\s]+)', os.popen(cmd).read())
|
|
if not res:
|
|
return None
|
|
return res.group(1)
|
|
|
|
def find_library(name):
|
|
lib = _findLib_ld(name) or _findLib_gcc(name)
|
|
if not lib:
|
|
return None
|
|
return _get_soname(lib)
|
|
|
|
################################################################
|
|
# test code
|
|
|
|
def test():
|
|
from ctypes import cdll
|
|
if os.name == "nt":
|
|
print cdll.msvcrt
|
|
print cdll.load("msvcrt")
|
|
print find_library("msvcrt")
|
|
|
|
if os.name == "posix":
|
|
# find and load_version
|
|
print find_library("m")
|
|
print find_library("c")
|
|
print find_library("bz2")
|
|
|
|
# getattr
|
|
## print cdll.m
|
|
## print cdll.bz2
|
|
|
|
# load
|
|
if sys.platform == "darwin":
|
|
print cdll.LoadLibrary("libm.dylib")
|
|
print cdll.LoadLibrary("libcrypto.dylib")
|
|
print cdll.LoadLibrary("libSystem.dylib")
|
|
print cdll.LoadLibrary("System.framework/System")
|
|
else:
|
|
print cdll.LoadLibrary("libm.so")
|
|
print cdll.LoadLibrary("libcrypt.so")
|
|
print find_library("crypt")
|
|
|
|
if __name__ == "__main__":
|
|
test()
|