Adding support for png images

piwigo_thumbgen.sh

@@ -22,7 +22,7 @@ STARTTIME=$(date +%s)
 # drop CIFS cache in case target files existed before 
 #sync; echo 3 > /proc/sys/vm/drop_caches;
 
-for file in "$sourceDir"/**/*.{jpg,JPG,jpeg,JPEG}
+for file in "$sourceDir"/**/*.{jpg,JPG,jpeg,JPEG,png,PNG}
 do
   if [[ ! -f "$file" ]]
   then
@@ -52,12 +52,16 @@ do
 
     mkdir -p "${destDir}${fnPath}"
 
+    # image format specific checks to display warnings
+    exp='\.(png|PNG)$'
+    if [[ ! "$file" =~ $exp ]] ; then
       #Error checking
       result=$(jpeginfo -c "$file")
       if [[ $result != *"[OK]"* ]]
       then
         echo $result
       fi
+    fi
 
     #auto rotate source image according to exif orientation information
     orient=$(exiftool -Orientation "${file}")
@@ -66,6 +70,7 @@ do
       if [ "$quali" -le "0" ]; then
         quali=94
       fi
+
       echo "rotate with quality $quali preserving timestamp: $file"
       TIMESTAMP="$( ls -l --time-style='+%Y%m%d%H%M.%S' "${file}" | cut  --delimiter=' ' --fields=6 )"
       mogrify -auto-orient -quality ${quali} "${file}"