diff options
Diffstat (limited to 'magic/loader.py')
| -rw-r--r-- | magic/loader.py | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/magic/loader.py b/magic/loader.py new file mode 100644 index 0000000..6a47d52 --- /dev/null +++ b/magic/loader.py @@ -0,0 +1,39 @@ +import ctypes +import sys + +def load_lib(): + libmagic = None + # Let's try to find magic or magic1 + dll = ctypes.util.find_library('magic') \ + or ctypes.util.find_library('magic1') \ + or ctypes.util.find_library('cygmagic-1') \ + or ctypes.util.find_library('libmagic-1') \ + or ctypes.util.find_library('msys-magic-1') # for MSYS2 + + # necessary because find_library returns None if it doesn't find the library + if dll: + libmagic = ctypes.CDLL(dll) + + if not libmagic or not libmagic._name: + windows_dlls = ['magic1.dll', 'cygmagic-1.dll', 'libmagic-1.dll', 'msys-magic-1.dll'] + platform_to_lib = {'darwin': ['/opt/local/lib/libmagic.dylib', + '/usr/local/lib/libmagic.dylib'] + + # Assumes there will only be one version installed + glob.glob('/usr/local/Cellar/libmagic/*/lib/libmagic.dylib'), # flake8:noqa + 'win32': windows_dlls, + 'cygwin': windows_dlls, + 'linux': ['libmagic.so.1'], + # fallback for some Linuxes (e.g. Alpine) where library search does not work # flake8:noqa + } + platform = 'linux' if sys.platform.startswith('linux') else sys.platform + for dll in platform_to_lib.get(platform, []): + try: + libmagic = ctypes.CDLL(dll) + break + except OSError: + pass + + if not libmagic or not libmagic._name: + # It is better to raise an ImportError since we are importing magic module + raise ImportError('failed to find libmagic. Check your installation') + return libmagic
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