| #@PydevCodeAnalysisIgnore |
| import sys, os |
| import ctypes |
| |
| # 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 |
| |
| 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: |
| import errno |
| 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": |
| sys.stdout.write('%s\n' % (cdll.msvcrt,)) |
| sys.stdout.write('%s\n' % (cdll.load("msvcrt"),)) |
| sys.stdout.write('%s\n' % (find_library("msvcrt"),)) |
| |
| if os.name == "posix": |
| # find and load_version |
| sys.stdout.write('%s\n' % (find_library("m"),)) |
| sys.stdout.write('%s\n' % (find_library("c"),)) |
| sys.stdout.write('%s\n' % (find_library("bz2"),)) |
| |
| # getattr |
| ## print_ cdll.m |
| ## print_ cdll.bz2 |
| |
| # load |
| if sys.platform == "darwin": |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("libm.dylib"),)) |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("libcrypto.dylib"),)) |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("libSystem.dylib"),)) |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("System.framework/System"),)) |
| else: |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("libm.so"),)) |
| sys.stdout.write('%s\n' % (cdll.LoadLibrary("libcrypt.so"),)) |
| sys.stdout.write('%s\n' % (find_library("crypt"),)) |
| |
| if __name__ == "__main__": |
| test() |