Add more img management tools

zsh/funcs/imgaddexif.sh

@@ -0,0 +1,74 @@
+function imgaddexif () (
+    #set -x
+    FLAG_DTO=0
+    FLAG_DRYRUN=1
+    FLAG_OVERWRITE=0
+
+    function _print_help() {
+        echo "Add fixed DateTimeOriginal"
+    	echo ""
+        echo "Usage: imgfn2exif <options> <file-selection>"
+        echo "    <file-selection> : for example *.JPG"
+        echo "    <options>        : The following options are available:"
+        echo "                     : -dto   date time format"
+        echo "                     : -d     write exif information"
+        echo "                     : -o     overwrite existing exif information"
+    }
+    
+    function _new_exif () {
+        file=$1
+        file_name=$(basename ${file})
+        file_name_prefix=${file_name%.*}
+    
+        if [ $FLAG_DRYRUN -eq 1 ]; then
+            cmd=(echo)
+        else
+            cmd=()
+        fi 
+        cmd+=(exiftool -overwrite_original -DateTimeOriginal=${FLAG_DTO} ${file})
+        if [ $FLAG_OVERWRITE -eq 0 ]; then
+            current_exif=$(exiftool -DateTimeOriginal ${file})
+            if [ ! -z $current_exif ]; then
+                echo "Exif DateTimeOriginal already exists for ${file}: ${current_exif#*: }"
+                return
+            fi  
+        fi
+    
+        echo Executing: ${cmd}
+        "${cmd[@]}"
+    }
+
+    while true; do
+        case $1 in
+            -d) 
+                FLAG_DRYRUN=0
+                shift;
+                ;;
+            -dto)
+                shift;
+                FLAG_DTO=$1
+                shift;
+                ;;
+            -h)
+                _print_help
+                exit 0
+                ;;
+            -o)
+                FLAG_OVERWRITE=1
+                shift;
+                ;;
+            *)
+                break
+                ;;
+        esac
+    done
+
+    if [ $FLAG_DTO -eq 0 ]; then
+        echo "You need to provide a date time format; see help"
+        exit 1
+    fi  
+
+    for f in $@; do
+        _new_exif $f
+    done
+)