#!/bin/sh
#	cd2iso     read CD to iso image
#

CDROM=/dev/cdrom	# Default device

# Help
if [ "$1" = "" ]
then
    echo "
	cd2iso 1.01		dump CD to an iso file
	
	Copyright (C) 2003:	Manel Marin
	Licence:		GNU GPL version >= 2
	
	Use:
	    cd2iso filename.iso			# Asumes /dev/cdrom as input
	    cd2iso filename.iso /dev/hdd
"
    exit 0
fi

# Get device if given
if [ "$2" != "" ]
then
    CDROM=$2
fi

# Check isoinfo present
if ! which isoinfo > /dev/null
then
    echo "isoinfo is not present, please install package: mkisofs"
    exit 2
fi

echo "----"
isoinfo -d -i $CDROM
echo "----"

# Calculate isosize from isoinfo data.
ISOSIZE=""
ISOSIZE=$(isoinfo -d -i $CDROM | awk '
    BEGIN { volume=0 }
    /[Vv]olume.*number/ { gsub( /.*: */, "" ); volume=$0 }
    /[bB]lock size/  { gsub( /.*: */, "" ); blocksize=$0 }
    /[Vv]olume size/ { gsub( /.*: */, "" ); volumesize=$0 }
    END {
			# NOTE 1.01: Volume number could not be present == 1
	if( volume == 0 && (blocksize == 0 || volumesize == 0)){
	    print ""				# No data available: ERROR
	    exit
	}
	if( volume > 1 ) print "0"		# more than 1 volume return 0
	else print blocksize * volumesize	# return isosize
    }
')

if [ "$ISOSIZE" = "" ]
then
    echo "ABORTING: Some error ocurred while piping isoinfo via awk..."
    exit 2
elif [ "$ISOSIZE" = 0 ]
then
    echo "More than 1 volume in CDROM, it can not be dump to an ISO file"
    exit 1
else
    echo "Dumping $ISOSIZE bytes from $CDROM to file"
    echo "Please be patient..."

    #head --bytes=`isosize /dev/cdrom` < /dev/cdrom > $1
    nice head --bytes=$ISOSIZE < $CDROM > $1
fi