From 8773df571f27bfe3b44ab853b45e3f866c3f9e2a Mon Sep 17 00:00:00 2001
From: Jeff MacKinnon <jeff@jeffmackinnon.com>
Date: Tue, 25 Oct 2022 17:26:46 -0300
Subject: [PATCH] initial commit

---
 exif2txt.py | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 exif2txt.py

diff --git a/exif2txt.py b/exif2txt.py
new file mode 100644
index 0000000..f9bce7e
--- /dev/null
+++ b/exif2txt.py
@@ -0,0 +1,77 @@
+# Write EXIF metadata to text file for pelican.photos plugin.
+
+#import os
+from os import listdir
+from os.path import isfile, join
+
+#import PIL
+from PIL import Image
+from PIL.ExifTags import GPSTAGS
+from PIL.ExifTags import TAGS
+from fraction import Fraction
+
+
+# The first two functions are borrowed from github user @jpstroop
+# https://gist.github.com/jpstroop/58a21d02370c8ba34dc8f0fdd4206d70
+
+
+def _map_key(k):
+    try:
+        return TAGS[k]
+    except KeyError:
+        return GPSTAGS.get(k, k)
+
+# Creates a dictionary of image EXIF meta data from an image, borrowed from a github gist
+def get_exif(image_path):
+    metadata = {}
+    with Image.open(image_path) as i:
+        info = i._getexif()
+    try:
+        [ metadata.__setitem__(_map_key(k), v) for k, v in info.items() ]
+        return metadata
+    except AttributeError:
+        return None
+
+#Creates a text file with some exif meta data.
+def write_exif_file(directory):
+    # Open the exif.txt file, create if it doesn't exist, in the current folder.
+    txt = open(directory+'/exif.txt', 'w')
+
+    for file in os.listdir(directory):
+
+        # check the files which are end with specific extension
+        # Everything that I want to have EXIF information for is a jpg, but you can add others too.
+        if file.endswith(".jpg"):
+            # Need to iterate through the files in the list and pass each to the 
+            image = get_exif(directory +'/'+os.path.join(file))
+            txt.write(
+                os.path.join(file) + ': ' + 
+                str(image.get('Model')) + 
+                ' with a ' + str(image.get('LensModel')) + 
+                ' - ' + str(image.get('ExposureTime')) + 's, ' + # I want to change this to fractions, but it works for now.
+                'f/' + str(image.get('FNumber')) + 
+                ' at ISO-' +  str(image.get('ISOSpeedRatings')) + 
+                '\n'
+                )
+
+    # Close the text file now that we are done with it.
+    txt.close()
+    return None
+
+# The directory of the source photos, the same as PHOTO_LIBRARY in pelicanconf.py
+# I run this in a WSL instance, but pelican is run on the host windows machine, hence the sample directory
+dir = '/mnt/c/Users/jeff/Pictures' 
+
+# This walks through the directories and for each it calls the write exif file function
+for root, subdirectories, files in os.walk(dir):
+    for subdirectory in subdirectories:
+       print(os.path.join(root, subdirectory))
+       write_exif_file(os.path.join(root, subdirectory))
+
+# This is from J0el - https://gist.github.com/Jeffmackinnon/92c747b30a873129a28cddacfc61fbe1?permalink_comment_id=4185193#gistcomment-4185193
+
+def exposure(ExposureTime):
+    try:
+    return( str(Fraction('ExposureTime')))
+    except:
+    return('None')
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