Version 1.0.0

Added a Help Menu, and updated the arguments, supporting Flags

The Readme is also updated

Author: lejacobroy

README.md

@@ -6,7 +6,7 @@ By design, Guetzling will overwrite and/or delete your original files.  If you w
 
 ## Install Guetzli
 1. Install [Guetzli](https://github.com/google/guetzli), via the directions provided at the link.
-2. Copy Guetzling, copy it to `/usr/bin`.
+2. Copy Guetzling to `/usr/bin`.
 
 ## Usage
 1. Simply `cd` to the parent directory of your choice, and `guetzling`. ***Voilà!***
@@ -16,40 +16,36 @@ By design, Guetzling will overwrite and/or delete your original files.  If you w
 By Default, Guetzling uses the following options:
 
 - JPGs are re-compressed and overwritten
-- PNGs are converted to JPG and the originals are deleted
-- Quality Level is for Guetzli is set to 95
+- PNGs are converted to JPG, re-compressed, and the originals are deleted
+- Quality Level is set to 95
 
-You can adjust these options using bash arguments:
+You can adjust these options using flags:
 
-1. Quality for JPG re-compression.
-	- Requires a value between 84 and 100 for Guetzli is designed to fail
-	- Default value is the same as Guetzli: 95
- 
- 2. Quality for PNG conversion.
-	- Requires a value between 84 and 100 for Guetzli is designed to fail
-	- Default value is the same as Guetzli: 95
+-q Quality for JPG or PNG re-compression.
+	- Requires a value between 84 and 100.
+	- Default value is the same as Guetzli: 95.
 
-3.  Compress JPGs
-	- Set to "false" and Guetzliing will ignore JPG/JPEG files, compressing only PNGS.
+-j Compress JPGs ONLY
+	- Use this flag and Guetzling will ignore PNGs files, compressing only JPGs.
 
-4. Compress PNGs
-	- Set to "false" and Guetzling will ignore PNG files, compressing only JPGS
+-p Compress PNGs ONLY
+	- Use this flag and Guetzling will ignore JPGs files, compressing only PNGs.
 
- 5.  Delete PNG
- 	- Set to "false" and Guetzling will keep the copy of any original PNGs in your folder
+-k Keep PNG
+ 	- Use this flag and Guetzling will keep original PNGs files, and output compressed JPGs.
 
 
 ## Example Usage
 
- Replace all files at quality 95:
+ Replace all files at quality 95 :
 
  	./guetzling
 
- Convert JPGs at 95, PNGs at 84, and keep your original PNG files:
+ Convert PNGs at 84, and keep your original PNG files :
 
- 	./guetzling 95 84 true true false
+ 	./guetzling -q 84 -p -k
 
- Convert only JPGs at Quality Level 97:
+ Convert only JPGs at Quality 97 in /Users/test/photos/output :
 
-	./guetzling 97 95 true false
+	./guetzling -q 97 -j -f /Users/test/photos/output
 

guetzling

@@ -1,32 +1,91 @@
 #!/bin/bash
+#Guetzling V 1.0.0
+help() { echo -e "
+$(basename $0), Version 1.0.0
+
+Usage example: $(basename $0) -q 90 -j -f ~/photos/output
+
+    -q <84-100>, Sets the Quality, Default is 95
+    -j Recompress ONLY JPG (by default it will also recompress PNG)
+    -p Recompress ONLY PNG (by default it will also recompress JPG)
+    -k Keep the original PNG after conversion (by default it will not)
+    -f <folder> Speficify a folder of images to recompress, including subfolders (right now it's $(pwd)) 
+  " 1>&2; exit 1; }
 
 #Set Quality level for JPG recompression
 #Default = 95
 #Max = 100
 #Min = 84
-QUALITY_JPG=${1:-95}
+QUALITY_JPG=95
 
 #Set Quality level
 #Default = 95
 #Max = 100
 #Min = 84
-QUALITY_PNG=${2:-95}
+QUALITY_PNG=95
 
 #Recompress JPG Images
 #Set to false to disable
-JPG=${3:-true}
+JPG=true
 
 #Convert PNG Images
 #Set to false to disable
 #PNGS WILL BE DELETED AFTER CONVERSION UNLESS OTHERWISE SPECIFIED
-PNG=${4:-true}
+PNG=true
 
 #Remove original PNGS after conversion to JPG
-PNG_DELETE=${5:-true}
+PNG_DELETE=true
 
-IFS=$'\n';
+#Set the operating folder to pwd
 FOLDER=$(pwd)
 
+while getopts ":q:j:p:k:f:" o; do
+    case "${o}" in
+        q)
+            q=${OPTARG}
+            if ((q >= 84 || q <= 100))
+            then
+                QUALITY_JPG=${q}
+                echo "QUALITY_JPG = ${QUALITY_JPG}"
+            else
+                help
+            fi
+            ;;
+        j)
+            j=${OPTARG}
+            PNG=false
+            echo "Recompressing JPG ONLY"
+            ;;
+        p)
+            p=${OPTARG}
+            JPG=false
+            echo "Recompressing PNG ONLY"
+            ;;
+        k)
+            k=${OPTARG}
+            PNG_DELETE=false
+            echo "Keeping PNG after compression"
+            ;;
+        f)
+            f=${OPTARG}
+            FOLDER=${f}
+            echo "Working in folder ${f}, including subfolders"
+            ;;
+        *)
+            help
+            ;;
+    esac
+done
+shift $((OPTIND-1))
+
+#if [ -z "${q}" ] || [ -z "${j}" ]; then
+#    help
+#fi
+
+
+
+IFS=$'\n';
+
 if [ $JPG = true ];
     then
         for f in $(find "$FOLDER" -name '*.jpg')