From ec9105b690974b0246e36769506e735c4edf069a Mon Sep 17 00:00:00 2001
From: Matthias Baumgartner <dev@igsor.net>
Date: Wed, 1 Mar 2023 21:38:09 +0100
Subject: Exif data reader and extractor

---
 bsie/reader/exif.py | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 bsie/reader/exif.py

(limited to 'bsie/reader/exif.py')

diff --git a/bsie/reader/exif.py b/bsie/reader/exif.py
new file mode 100644
index 0000000..e087bec
--- /dev/null
+++ b/bsie/reader/exif.py
@@ -0,0 +1,49 @@
+"""
+
+Part of the bsie module.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# 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 as err:
+            raise errors.ReaderError(path) from err
+
+## EOF ##
-- 
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