Exif/Discover fix

libraw/bindings.py

@@ -8,7 +8,7 @@
 from ctypes import util
 
 from libraw import errors
-from libraw.callbacks import data_callback, exif_parser_callback, memory_callback, progress_callback
+from libraw.callbacks import data_callback, memory_callback, progress_callback
 from libraw.errors import c_error
 from libraw.structs import libraw_data_t, libraw_decoder_info_t, libraw_processed_image_t
 
@@ -54,11 +54,6 @@ def __init__(self):  # pragma: no cover
         self.libraw_recycle_datastream.argtypes = [POINTER(libraw_data_t)]
         self.libraw_recycle.argtypes = [POINTER(libraw_data_t)]
         self.libraw_close.argtypes = [POINTER(libraw_data_t)]
-        self.libraw_set_exifparser_handler.argtypes = [
-            POINTER(libraw_data_t),
-            exif_parser_callback,
-            c_void_p,
-        ]
         self.libraw_set_memerror_handler.argtypes = [
             POINTER(libraw_data_t),
             memory_callback,

libraw/callbacks.py

@@ -10,37 +10,6 @@
 
 from ctypes import *  # noqa
 
-exif_parser_callback = CFUNCTYPE(
-    c_void_p, c_int, c_int, c_int, c_int, c_void_p
-)
-"""
-Creates a callback for use by the EXIF parser.
-
-.. sourcecode:: python
-
-    def exif_cb(context, tag, type, len, ord, ifp):
-        pass
-
-    cb = exif_parser_callback(exif_cb)
-
-    libraw.libraw_set_exifparser_handler(libraw_data, cb, data)
-
-Your callback function should map to the LibRaw C callback definition below:
-
-.. sourcecode:: c
-
-    typedef void (*exif_parser_callback) (
-        void *context, int tag, int type, int len, unsigned int ord, void *ifp
-    );
-
-
-Args:
-    callback (function): The Python function to convert to a C callback.
-
-Returns:
-    _ctypes.PyCFuncPtrType: A C callback.
-"""
-
 memory_callback = CFUNCTYPE(c_void_p, c_char_p, c_char_p)
 """
 Creates a callback for use when there are memory errors in LibRaw.

rawkit/util.py

@@ -10,6 +10,7 @@
 import os
 
 from libraw.bindings import LibRaw
+from libraw.errors import FileUnsupported
 
 
 def discover(path):
@@ -26,9 +27,13 @@ def discover(path):
     for root, _, files in os.walk(path):
         for file_name in files:
             file_path = os.path.join(root, file_name).encode('ascii')
-            if libraw.libraw_open_file(raw, file_path) == 0:
-                file_list.append(file_path)
-            libraw.libraw_recycle(raw)
+            try:
+                libraw.libraw_open_file(raw, file_path)
+            except FileUnsupported:
+                continue
+            finally:
+                libraw.libraw_recycle(raw)
+            file_list.append(file_path)
 
     libraw.libraw_close(raw)
     return file_list

tests/unit/util_test.py

@@ -2,6 +2,7 @@
 import pytest
 
 from rawkit import util
+from libraw.errors import FileUnsupported
 
 
 @pytest.yield_fixture
@@ -17,7 +18,7 @@ def test_discover(libraw):
         'rawkit.util.os.walk',
         return_value=(('', None, ('foo.CR2', 'foo.jpg')),)
     ):
-        libraw.libraw_open_file.side_effect = [0, 1]
+        libraw.libraw_open_file.side_effect = [0, FileUnsupported()]
         files = util.discover('')
         assert files == ['foo.CR2'.encode('ascii')]