Intermediate changes

1 files changed, 50 insertions, 0 deletions

diff --git a/contrib/python/python-magic/py3/magic/loader.py b/contrib/python/python-magic/py3/magic/loader.py
new file mode 100644
index 00000000000..931f16193e4
--- /dev/null
+++ b/contrib/python/python-magic/py3/magic/loader.py
@@ -0,0 +1,50 @@
+from ctypes.util import find_library
+import ctypes
+import sys
+import glob
+import os.path
+
+def _lib_candidates():
+
+  yield find_library('magic')
+
+  if sys.platform == 'darwin':
+
+    paths = [
+      '/opt/local/lib',
+      '/usr/local/lib',
+      '/opt/homebrew/lib',
+    ] + glob.glob('/usr/local/Cellar/libmagic/*/lib')
+
+    for i in paths:
+      yield os.path.join(i, 'libmagic.dylib')
+
+  elif sys.platform in ('win32', 'cygwin'):
+
+    prefixes = ['libmagic', 'magic1', 'cygmagic-1', 'libmagic-1', 'msys-magic-1']
+
+    for i in prefixes:
+      # find_library searches in %PATH% but not the current directory,
+      # so look for both
+      yield './%s.dll' % (i,)
+      yield find_library(i)
+
+  elif sys.platform == 'linux':
+    # This is necessary because alpine is bad
+    yield 'libmagic.so.1'
+
+
+def load_lib():
+
+  for lib in _lib_candidates():
+    # find_library returns None when lib not found
+    if lib is None:
+      continue
+    try:
+      return ctypes.CDLL(lib)
+    except OSError:
+      pass
+  else:
+    # It is better to raise an ImportError since we are importing magic module
+    raise ImportError('failed to find libmagic.  Check your installation')
+