feat: Unify Driveのコピー処理を実装

vendor/exifread/core/jxl.py

@@ -0,0 +1,23 @@
+"""
+Find Exif data in a JPEG XL file
+"""
+
+from typing import Tuple
+
+from exifread.core.heic import HEICExifFinder
+
+
+class JXLExifFinder(HEICExifFinder):
+    """Find JPEG XL EXIF tags."""
+
+    def find_exif(self) -> Tuple[int, bytes]:
+        ftyp = self.expect_parse("ftyp")
+        assert ftyp.major_brand == b"jxl "
+        assert ftyp.minor_version == 0
+        exif = self.expect_parse("Exif")
+
+        offset = exif.pos + 4
+        self.file_handle.seek(offset - 8)
+        assert self.get(8)[:6] == b"Exif\x00\x00"
+        endian = self.file_handle.read(1)
+        return offset, endian