#! /bin/sh

# gziper -- only compress files that worth being compressed
# $Id: gziper,v 1.5 1998/07/09 22:22:56 cdua Exp cdua $
# Carlos Duarte, 960905/030908

#trap -- 'rm -f /tmp/xpto' EXIT SIGINT

USAGE="\
usage: $0 [-hngb] [gzip options] dirs files... 

  -h      this help
  -n      no op
  -g      use gzip (default)
  -b      use bzip2
"

prog=gzip
cmd='xargs -0 -r ${prog} ${gzip_opt}'
while : ; do
	case x"$1" in 
	x-h)	echo "$USAGE"; exit 1 ;;
	x-n)	cmd='tr \\0 \\n' ;; 	## cmd=cat
	x-b)	prog=bzip2 ;; 
	x-g)	prog=gzip ;; 
	x--)	shift; break ;;
	x-?)	gzip_opt="$gzip_opt $1" ;;
	*)	break ;;
	esac
	shift
done

## if _must_ accept on extra argument after options
#if test $# -eq 0; then echo "$USAGE"; exit 1; fi

#du -k $* | awk '!/gz$/ { if ($1 > 1) print $2 }' | eval $cmd

find "${@:-.}" \
	-type f \
	! -name '*gz' \
	! -name '.*gz' \
	! -name '*zip' \
	! -name '.*zip' \
	! -name '*Z' \
	! -name '.*Z' \
	-size +1k \
	-print0 | eval $cmd

#exit 0
exit