#!/bin/bash
# -------------------------------------------------------------------------
# Jehsom's mksfv - Creates a standard sfv file with CRCs of specified files.
# Copyright (C) 2001 jehsom@jehsom.com
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
# -------------------------------------------------------------------------
#
# You must compile the provided calc_crc32.c provided:
#       gcc -o calc_crc32 calc_crc32.c
# and place it in your search path ($PATH), i.e. in /usr/local/bin.
#
#######################
### Ignore the rest ###
#######################

VERSION="1.0"

[ -z $1 ] && {
	echo
	echo "Jehsom's SFV maker v$VERSION"
	echo "Usage: mksfv sfv_name.sfv file1 file2 ..."
	echo
	exit 0
}

[ -z $2 ] && {
	echo "You must specify at least one file to put in the sfv."
	exit 1
}

[ -f $1 ] && {
	echo "$1 already exists. Please delete or"
	echo "rename it if you wish to create a new sfv of the same name."
	exit 1
}	

type calc_crc32 > /dev/null 2>&1 || {
	echo "You need calc_crc32 to use this SFV maker"
	exit 1
}	

# Put a \r in $cr so we can make the file dos-friendly
cr="`echo -n x | tr 'x' '\015'`"
pad="          "
sfv=$1

echo -n > $sfv || { echo "Could not write to $sfv."; exit 1; }

# Now all the params are files to be sfv'd
shift

{ echo "; SFV created with calc_crc32 and Jehsom's mksfv ver. $VERSION"
  echo ";"
  echo -e "; List of files and byte sizes:"
  # Get a listing of the files and their sizes
  ls -ld $* | tr -s ' ' | cut -f5,9 -d ' ' | sed 's/^/; /'
  echo ";"

  for i; do
	echo "$i $(calc_crc32 $i)"
  done
} | sed "s/$/$cr/" > $sfv  

exit 0