minify.sh

#!/bin/bash

if [ $# != 2 ]
then
    echo "minify takes exactly 2 arguments ($# given)"
    exit 1
fi

case ${1} in
    -f)
        content=`cat $2`
    ;;
    -t)
        content="$2"
    ;;
    *)
        echo "Unknown option: $1"
        exit 1
    ;;
esac

# Removes comments and unnecessary spaces/tabs
content=`echo "$content" | sed '/^[[:blank:]]*$/d; /^#[^\!].*/d; s/^[[:space:]]\+//g; s/[[:space:]]\+$//g'`
# Forces one-line if-then, for-do, while-do, fi, done, ;;
content=`echo "$content" | sed ':a;N;$!ba;s/\nthen\n/\;then\n/g; s/\ndo\n/;do\n/g; s/\n;;/;;/g; s/\nfi\n/;fi\n/g; s/\ndone\n/;done\n/g'`

echo "$content"
exit 0