zoplify.sh

#!/bin/bash

ASSET_PATH=$1
t="$(date +%s)"

if [ ! -d $ASSET_PATH ] && ( echo $ASSET_PATH not found && exit 1 )
hash zopfli 2>/dev/null || (echo zopfli needs to be installed && exit 1)

find $ASSET_PATH -type f | xargs -P 99 zopfli

# Remove any compressed file that was actually larger than the original
for FILE in $(find $ASSET_PATH -name *.gz ); do
  if [ $( stat -c%s $FILE) -ge $( stat -c%s ${FILE%.*}) ]; then
    rm $FILE
  fi;
done;

t="$(($(date +%s)-t))"
echo "time in seconds: ${t}"