compressimgs

#!/bin/bash
if [ -z "$1" ]; then
	echo usage: compressimg [directory or file]
	echo This tool will apply common image optimization techniques to the given file,
	echo or recursively spply them to every file in the given directory.
	exit
fi

# apply the compressimg script to every image file within the given directory
# if the input is a single file, execute the script on it
ORIGSIZE=`du -sb $1 | awk '{ print $1}'`
INPUTTYPE="Directory"

# execute compression
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
if [ -d $1 ]; then
	find $1 -type f \( -name "*.jpeg" -or -name "*.jpg" -or -name "*.png" \) -exec $DIR/compressimg '{}' \;
else
	INPUTTYPE="File"
	$DIR/compressimg $1
fi

# generate stats
NEWSIZE=`du -sb $1 | awk '{ print $1}'`
READABLESIZE=`du -sh $1 | awk '{ print $1}'`
((PERCENTCHANGE=100-(NEWSIZE*100/ORIGSIZE)))
echo Finished. $INPUTTYPE is now about $READABLESIZE total \($PERCENTCHANGE% drop\)