Restructured parts of the tool in preparation for new image output mechanism.

exif_rad.py

@@ -3,7 +3,8 @@
 
 """Iterates over a bunch of .jpg or .cr2 files and matches 
 DateTimeOriginal from Exif tag to DateTime in a csv log 
-of a GeigerMuellerCounter. """
+of a GeigerMuellerCounter and writes its value to the UserComment
+Exif tag in µS/h"""
 
 from datetime import datetime
 import os
@@ -58,19 +59,23 @@ for photo in args.photos:
             if csvtime == pictime:
                 rad = round(float(csvrawcpm) * args.sifactor, 2)
 
-                # convert str to exif compatible string
+                # Set key, value for new UserComment
+                key = 'Exif.Photo.UserComment'
                 new_comment = 'Radiation ☢ ' + str(rad) + ' µS/h'
-#                user_comment = piexif.helper.UserComment.dump(new_comment, encoding="unicode")
-#                exif_dict["Exif"][piexif.ExifIFD.UserComment] = user_comment
+                metadata[key] = pyexiv2.ExifTag(key, new_comment)
                 
-                # compile and write tags
-#                exif_bytes = piexif.dump(exif_dict)
-
-                # be os aware and use the correct directory delimiter
-                outfile = os.path.join(args.outdir, photo_basename)
-                # write target file
-                # print output
+                # print found radiation levels
                 print('{:<30} {:<20} {:<22}'.format(photo_basename, str(pictime), new_comment))
+
+                # be os aware and use the correct directory delimiter for destfile
+                outfile = os.path.join(args.outdir, photo_basename)
+
+                if args.outdir == ".":
+                    print('Going to overwrite source file')
+                    # metadata.write()
+                else:
+                    print('Going to copy source file to destdir and modify it there')
+
                 break
         else:
             print('{:<30} {:<20} {:<22}'.format(photo_basename, str(pictime), 'NOT FOUND!'))