Merge branch 'mb/diogenes' into develop

1 files changed, 44 insertions, 0 deletions

diff --git a/bsie/reader/exif.py b/bsie/reader/exif.py
new file mode 100644
index 0000000..2d0428b
--- /dev/null
+++ b/bsie/reader/exif.py
@@ -0,0 +1,44 @@
+
+# standard imports
+import typing
+
+# external imports
+import pyexiv2
+
+# bsie imports
+from bsie.utils import errors, filematcher
+
+# inner-module imports
+from . import base
+
+# constants
+MATCH_RULE = 'mime=image/jpeg'
+
+# exports
+__all__: typing.Sequence[str] = (
+    'Exif',
+    )
+
+
+## code ##
+
+class Exif(base.Reader):
+    """Use pyexiv2 to read exif metadata from image files."""
+
+    def __init__(self):
+        self._match = filematcher.parse(MATCH_RULE)
+
+    def __call__(self, path: str) -> dict:
+        # perform quick checks first
+        if not self._match(path):
+            raise errors.UnsupportedFileFormatError(path)
+
+        try:
+            # open the file
+            img = pyexiv2.Image(path)
+            # read metadata
+            return img.read_exif()
+        except (TypeError, OSError, RuntimeError) as err:
+            raise errors.ReaderError(path) from err
+
+## EOF ##