#! /bin/sh
# $Id: vfjuggle,v 1.6 2002/02/27 02:12:12 mis Exp $
# Enviroment: 
# VF_MNTPOINT - the default is /cdrom
# VF_MNTDEV   - the default is empty
# VF_EJECT    - e.g. VF_EJECT="ziptool -e /dev/zip", 
#                    VF_EJECT="cdeject -d $VF_MNTDEV"

cdid() 
{
    URI=`echo $1 | sed 's@^cdrom://@@'`
    CDID=`echo $URI | sed 's@/.*@@'`
    URI=`echo $URI | sed 's@[^/]*/@@'`
    BN=`basename $URI`
    
    #echo "$1 -> uri $URI, id $CDID"
    if [ -z "$URI" -o -z "$CDID" ]; then
	echo "$1: URL syntax error"
	exit 1
    fi
}

mount_()
{
    typeset id=$1

    if [ -f "$VF_MNTPOINT/$id" ]; then
	return 0
    fi

    $VF_MOUNT $VF_MNTDEV $VF_MNTPOINT 2>/dev/null 
    if [ -f "$VF_MNTPOINT/$id" ]; then
	return 0
    fi
	    
    while true; do
	echo "Umounting $id $VF_MNTPOINT/$id $VF_MNTPOINT..."
	$VF_UMOUNT $VF_MNTPOINT
	
	if [ -n "$VF_EJECT" ]; then
	    "$VF_EJECT"
	fi    

	echo "Insert the $id disk into drive you're using, and press ENTER"
	read k
	if [ $? -ne 0 ]; then
	    echo "read error; this should not happen, give up."
	    exit 1
        fi

	echo "Mounting $VF_MNTDEV $VF_MNTPOINT..."
	$VF_MOUNT $VF_MNTDEV $VF_MNTPOINT
	typeset rc=$?

	if [ -f "$VF_MNTPOINT/$id" ]; then
	    return 0

	elif [ $rc -eq 0 ]; then
	    echo "Not a $id disk"
	fi    
    done
}

usage()
{
    echo "usage: `basename $0` DESTDIR [cdrom://DISK_ID_FILE/PATH...]"
}


#
# main 
# 

if [ -f ~/.vfjugglerc ]; then
  . ~/.vfjugglerc
fi

PATH="/bin:/usr/bin:/usr/sbin:/sbin"

VF_MNTPOINT=${VF_MNTPOINT:-"/cdrom"}
if [ ! -d "$VF_MNTPOINT" ]; then
    echo "$VF_MNTPOINT: no such directory"
    exit 1
fi

if [ -n "$VF_MNTDEV" ]; then #   by default run mount $VF_MNTPOINT only 
    if [ ! -b "$VF_MNTDEV" ]; then
	echo "$VF_MNTDEV: no such device"
	exit 1
    fi
fi

VF_MOUNT=${VF_MOUNT:-"mount"}
VF_UMOUNT=${VF_UMOUNT:-"umount"}

if [ "$#" = 0 ]; then
    usage
    exit 0
fi

DESTDIR=$1; shift;
if [ ! -d "$DESTDIR" ]; then 
    echo "$DESTDIR: no such directory"
    exit 1
fi

#echo "POLDEK_VFJUGGLE_CPMODE = $POLDEK_VFJUGGLE_CPMODE"
while  [ $# -gt 0 ]; do
    URL=$1; shift;

    cdid $URL

    if [ -r $DESTDIR/$BN ]; then
	continue
    fi


    if [ ! -f "$VF_MNTPOINT/$CDID" ]; then 
	mount_ $CDID
    fi

    if [ ! -f "$VF_MNTPOINT/$URI" ]; then
	echo "$VF_MNTPOINT/$URI: no such file"
	exit 1
    fi

    if [ "$BN" = "packages.dir" -o "$BN" = "packages.dir.gz" -o \
	 "$BN" = "Packages" -o "$BN" = "Packages.gz" ]; then
	  POLDEK_VFJUGGLE_CPMODE="copy"
    fi

    if [ -z "$POLDEK_VFJUGGLE_CPMODE" ]; then
	POLDEK_VFJUGGLE_CPMODE="link"
    fi

    if [ "$POLDEK_VFJUGGLE_CPMODE" == "copy" ]; then
#	 echo "cp $VF_MNTPOINT/$URI $DESTDIR/"
         cp -L --remove-destination $VF_MNTPOINT/$URI $DESTDIR/
    else 	 
#	 echo ln -sf "$VF_MNTPOINT/$URI" "$DESTDIR/$BN"
	 ln -sf "$VF_MNTPOINT/$URI" "$DESTDIR/$BN"
    fi
	
    if [ $? -ne 0 ]; then
	exit 1
    fi
done
exit 0