#!/bin/ksh -p
# Splits large file into 1.44Mb floppy size chunks...
# Usage: floppysplit [-d] filename
#     ** floppysplit filename.extn => split files into unix
#          filename format.
#          i.e. filename.extn => filename.extn.xaa,
#                                filename.extn.xab,
#                                filename.extn.xac, etc.
#
#          To "reconnect" the files under UNIX, use cat:
#            cat filename.extn.1 filename.extn.2 etc. > filename.extn
#
#     ** floppysplit -d filename.ext = split files into MSDOS
#          filename format.
#
#        * N.B. floppysplit assumes that the filename.ext is already in
#            DOS filename format!!!
#
#          i.e. filename.ext => filename.xaa
#                               filename.xab,
#                               filename.xac, etc.
#
#          To "reconnect" the files under DOS, use copy /b:
#            COPY /B FILENAME.EX1+FILENAME.EX2+etc. FILENAME.EXT


filename=$1

dos=0
if [[ $filename == "-d" ]] ; then
  dos=1 ;
  filename=$2
fi

if [[ $filename == "" ]] ; then
  echo "Usage: floppysplit [-d] filename" ;
  echo "       Read this shellscript ( $0 ) "
  echo "         for more information..."
  exit 1 ;
fi

split -b 1423k $filename

if (( dos == 1 )) ; then
  dot=$(echo "$filename" | grep -c "\.")
  if (( dot == 0 )) ; then
    filename=$filename.x
  fi
fi


filnam=$( echo $filename | sed 's/\..*$//' )
# Filename truncated to first '.' i.e. file.foo.bar.nil -> file

for j in a b c d e f g h i j k l m n o p q r s t u v w x y z ; do
  for i in a b c d e f g h i j k l m n o p q r s t u v w x y z ; do
    if [ -e x$j$i ] ; then

      if (( dos == 1 )) ; then
        mv x$j$i ${filnam}.x$j$i ;
      else
        mv x$j$i ${filename}.x$j$i ;
      fi ;

    else

      exit $?

    fi ;
  done ;
done ;