#! /bin/sh
# #############################################################################

       NAME_="wraptext"
       HTML_="wrap text file"
    PURPOSE_="wrap text file at 80th column; replace file with the wrapped version"
   SYNOPSIS_="$NAME_ [-hl] <file> [file...]"
   REQUIRES_="standard GNU commands"
    VERSION_="1.0"
       DATE_="2004-06-07; last update: 2004-06-21"
     AUTHOR_="Dawid Michalczyk <dm@eonworks.com>"
        URL_="www.comp.eonworks.com"
   CATEGORY_="text"
   PLATFORM_="Linux"
      SHELL_="bash"
 DISTRIBUTE_="yes"

# #############################################################################
# This program is distributed under the terms of the GNU General Public License

usage () {

echo >&2 "$NAME_ $VERSION_ - $PURPOSE_
Usage: $SYNOPSIS_
Requires: $REQUIRES_
Options:
     -h, usage and options (this help)
     -l, see this script"
    exit 1
}

# args check
[ $# -eq 0 ] && { echo >&2 missing argument, type $NAME_ -h for help; exit 1; }

# arg handling and execution
case $1 in

    -h) usage ;;
    -l) more $0; exit 1 ;;
     *) # main execution
        for a in "$@";do
            if [ -f "$a" ]; then
                fmt -w 80 -s $a > /tmp/$$.tmp
                mv /tmp/$$.tmp $a
            else
                echo file $a does not exist
            fi
        done ;;

esac