#!/bin/sh
# vim: set sw=4 ts=4 et:
help()
{
  cat <<HELP
smartzip -- automatically find the compression type of a file
and then uncompress it

USAGE: smartzip file

smartzip knows about:
bzip2
gzip
zip

HELP
  exit 0
}

error()
{
    # print an error and exit
    echo "$1"
    exit 1
}
# print help if no args given:
[ -z "$1" ] && help
[ -r "$1" ] || error "error: can not read file $1"
#
inputfile="$1"
ftype=`file "$inputfile"`
case "$ftype" in 
"$inputfile: Zip archive"*) 
    unzip "$inputfile" ;;
"$inputfile: gzip compressed"*) 
    gunzip "$inputfile" ;;
"$inputfile: bzip2 compressed"*) 
    bunzip2 "$inputfile" ;;
*) error "File $inputfile can not be uncompressed with smartzip";;
esac
#