Working output mechanism, honors users outdir choice.

If outdir is set, srcfile will be copied to outdir first and modified there.

CHANGELOG.md

@@ -5,7 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
-- uses pyexiv2 which is also able to tag various camera raw formats, e. g. CR2
+- uses pyexiv2 instead of piexif which is also able to tag various camera raw formats, e. g. CR2
 - removed unnecessary datetime object creation as pyexiv2 can output datetime objects
 
 ## [0.2] - ??????
@@ -23,4 +23,4 @@ First prototype using piexif
 - output in a tablish manner
 
 ### Modified
-- exchanged selfmade CSV parser by python's core CSV library
+- exchanged selfmade CSV parser by python's core CSV library

exif_rad.py

@@ -8,6 +8,7 @@ Exif tag in µS/h"""
 
 from datetime import datetime
 import os
+import shutil
 import csv
 import argparse
 import pyexiv2
@@ -37,15 +38,28 @@ parser.add_argument('-o', '--outdir', type=str, default='.',
 
 args = parser.parse_args()
 
-for photo in args.photos:
+for srcphoto in args.photos:
+    # Get image file name out of path
+    photo_basename = os.path.basename(srcphoto)
+
+    # Decide whether to modify photo in place or to copy it to outdir first
+    # Then set the destination file as 'photo' to work on
+    if args.outdir == ".":
+        print('Going to overwrite source file')
+        photo = srcphoto
+    else:
+        print('Going to copy source file to destdir and modify it there')
+        # be os aware and use the correct directory delimiter for destfile
+        dstphoto = os.path.join(args.outdir, photo_basename)
+        shutil.copy(srcphoto, dstphoto)
+        photo = dstphoto
+
     # Load Exif data from image
     metadata = pyexiv2.ImageMetadata(photo)
     metadata.read()
     tag = metadata['Exif.Photo.DateTimeOriginal']
     # tag.value creates datetime object in pictime
     pictime = tag.value
-    # Get image file name out of path
-    photo_basename = os.path.basename(photo)
     
     # Import GeigerCounter log
     with open(args.csv, "r") as f:
@@ -66,16 +80,8 @@ for photo in args.photos:
                 
                 # 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')
-
+                # Write Exif tags to file
+                metadata.write()
                 break
         else:
             print('{:<30} {:<20} {:<22}'.format(photo_basename, str(pictime), 'NOT FOUND!'))