#! /bin/sh
# preinst script for nvidia-current
#
# see: dh_installdeb(1)
#
# Copyright (C) 2009 Canonical Ltd
# Authors: Alberto Milone

set -e

# summary of how this script can be called:
#        * <new-preinst> `install'
#        * <new-preinst> `install' <old-version>
#        * <new-preinst> `upgrade' <old-version>
#        * <old-preinst> `abort-upgrade' <new-version>
#
# For details see /usr/share/doc/packaging-manual/

if [ `dpkg --print-architecture` = "amd64" ]; then
    HAS_LIB32="yes"
fi

case "$1" in
    install|upgrade)

    # We need to remove diversions from previous versions of the package

    # clean up from old diversions
    if [ -d /usr/share/nvidia-glx/diversions ]; then
        rm -f /usr/lib/libGL.so.1
        rm -f /usr/lib/libGL.so.1.2
        
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions/libGL.so.1 /usr/lib/libGL.so.1 > /dev/null
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions/libGL.so.1.2 /usr/lib/libGL.so.1.2 > /dev/null

        rm -f /usr/lib/xorg/modules/extensions/libGLcore.a
        rm -f /usr/lib/xorg/modules/extensions/libglx.a
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions/libGLcore.a /usr/lib/xorg/modules/extensions/libGLcore.a > /dev/null
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions/libglx.a /usr/lib/xorg/modules/extensions/libglx.a > /dev/null

        rmdir /usr/share/nvidia-glx/diversions || true;
        rmdir /usr/share/nvidia-glx || true;
    fi

    if [ -d /usr/share/nvidia-glx/diversions-X11R6 ]; then

        rm -f /usr/X11R6/lib/libGL.so.1
        rm -f /usr/X11R6/lib/libGL.so.1.2
        
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions-X11R6/libGL.so.1 /usr/X11R6/lib/libGL.so.1 > /dev/null
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/share/nvidia-glx/diversions-X11R6/libGL.so.1.2 /usr/X11R6/lib/libGL.so.1.2 > /dev/null

        rmdir /usr/share/nvidia-glx/diversions-X11R6 || true;
        rmdir /usr/share/nvidia-glx || true;
    fi
    # remove X11R6 diversions
    
    if dpkg-divert --list /usr/X11R6/lib/libGL.so.1 | grep 'nvidia-glx' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/X11R6/lib/nvidia/libGL.so.1.xlibmesa /usr/X11R6/lib/libGL.so.1 > /dev/null
    fi
    
    if dpkg-divert --list /usr/X11R6/lib/libGL.so.1.2 | grep 'nvidia-glx' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/X11R6/lib/nvidia/libGL.so.1.2.xlibmesa /usr/X11R6/lib/libGL.so.1.2 > /dev/null
    fi
    if dpkg-divert --list /usr/X11R6/lib/modules/extensions/libGLcore.a | grep 'nvidia-glx' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/X11R6/lib/nvidia/libGLcore.a.xlibmesa /usr/X11R6/lib/modules/extensions/libGLcore.a > /dev/null
    fi
    if dpkg-divert --list /usr/X11R6/lib/modules/extensions/libglx.a | grep 'nvidia-glx' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/X11R6/lib/nvidia/libglx.a.xlibmesa /usr/X11R6/lib/modules/extensions/libglx.a > /dev/null
    fi
    if dpkg-divert --list /usr/X11R6/lib/modules/extensions/libglx.so | grep 'nvidia-glx' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx --divert /usr/X11R6/lib/nvidia/libglx.so.xlibmesa /usr/X11R6/lib/modules/extensions/libglx.so > /dev/null
    fi

    # make sure these diversions don't exist anymore
    if dpkg-divert --list /usr/lib/libGL.so | grep 'nvidia-glx-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-dev --divert /usr/lib/nvidia/libGL.so.xlibmesa /usr/lib/libGL.so > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-dev-envy --divert /usr/lib/nvidia/libGL.so.xlibmesa /usr/lib/libGL.so > /dev/null || true
    fi
    if dpkg-divert --list /usr/lib/libGL.so | grep 'nvidia-glx-177-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-177-dev --divert /usr/lib/nvidia/libGL.so.xlibmesa /usr/lib/libGL.so > /dev/null || true
    fi
    if dpkg-divert --list /usr/lib/libGL.so | grep 'nvidia-glx-new-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-new-dev --divert /usr/lib/nvidia/libGL.so.xlibmesa /usr/lib/libGL.so > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-new-dev-envy --divert /usr/lib/nvidia/libGL.so.xlibmesa /usr/lib/libGL.so > /dev/null || true
    fi
    if dpkg-divert --list /usr/lib/libGL.a | grep 'nvidia-glx-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-dev --divert /usr/lib/nvidia/libGL.a.xlibmesa /usr/lib/libGL.a > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-dev-envy --divert /usr/lib/nvidia/libGL.a.xlibmesa /usr/lib/libGL.a > /dev/null || true
    fi
    if dpkg-divert --list /usr/lib/libGL.a | grep 'nvidia-glx-new-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-new-dev --divert /usr/lib/nvidia/libGL.a.xlibmesa /usr/lib/libGL.a > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-new-dev-envy --divert /usr/lib/nvidia/libGL.a.xlibmesa /usr/lib/libGL.a > /dev/null || true
    fi
    if dpkg-divert --list /usr/X11R6/lib/libGL.so | grep 'nvidia-glx-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-dev --divert /usr/X11R6/lib/nvidia/libGL.so.xlibmesa /usr/X11R6/lib/libGL.so > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-dev-envy --divert /usr/X11R6/lib/nvidia/libGL.so.xlibmesa /usr/X11R6/lib/libGL.so > /dev/null || true
    fi
    if dpkg-divert --list /usr/X11R6/lib/libGL.so | grep 'nvidia-glx-new-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-new-dev --divert /usr/X11R6/lib/nvidia/libGL.so.xlibmesa /usr/X11R6/lib/libGL.so > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-new-dev-envy --divert /usr/X11R6/lib/nvidia/libGL.so.xlibmesa /usr/X11R6/lib/libGL.so > /dev/null || true
    fi
    if dpkg-divert --list /usr/X11R6/lib/libGL.so | grep 'nvidia-glx-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-dev --divert /usr/X11R6/lib/nvidia/libGL.a.xlibmesa /usr/X11R6/lib/libGL.a > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-dev-envy --divert /usr/X11R6/lib/nvidia/libGL.a.xlibmesa /usr/X11R6/lib/libGL.a > /dev/null || true
    fi
    if dpkg-divert --list /usr/X11R6/lib/libGL.so | grep 'nvidia-glx-new-dev' > /dev/null ; then
        dpkg-divert --remove --rename --package nvidia-glx-new-dev --divert /usr/X11R6/lib/nvidia/libGL.a.xlibmesa /usr/X11R6/lib/libGL.a > /dev/null || true
        dpkg-divert --remove --rename --package nvidia-glx-new-dev-envy --divert /usr/X11R6/lib/nvidia/libGL.a.xlibmesa /usr/X11R6/lib/libGL.a > /dev/null || true
    fi


    # Make sure that no diversion is still there
    set -a "nvidia-glx" "nvidia-glx-new" "nvidia-glx-legacy" "nvidia-glx-envy"\
            "nvidia-glx-new-envy" "nvidia-glx-legacy-envy" "nvidia-glx-180" \
            "nvidia-glx-177" "nvidia-glx-173" "nvidia-glx-96" "nvidia-glx-71" \
            "nvidia-glx-185" "nvidia-glx-190"

    while [ $# -ge 1 ]; do
        glxname=$1
        glxdevname="$glxname-dev"
    
        if [ -n "$HAS_LIB32" ]; then
            #Remove diversions of /usr/lib32/libGL.so -- only for the new name schemes (nvidia-glx-VER)
            if dpkg-divert --list $glxname | grep "/usr/lib32/libGL.so " > /dev/null ; then
                rm -f /usr/lib32/libGL.so > /dev/null || true
                dpkg-divert --remove --rename --package $glxname --divert /usr/lib32/nvidia/libGL.so.xlibmesa /usr/lib32/libGL.so > /dev/null || true
            fi

            #Remove diversion of /usr/lib32/libGL.so.1
            if dpkg-divert --list $glxname | grep /usr/lib32/libGL.so.1 > /dev/null ; then
                rm -f /usr/lib32/libGL.so.1 > /dev/null || true
                dpkg-divert --remove --rename --package $glxname --divert /usr/lib32/nvidia/libGL.so.1.xlibmesa /usr/lib32/libGL.so.1 > /dev/null || true
            fi
            
            #Remove diversion of /usr/lib32/libGL.so.1.2
            if dpkg-divert --list $glxname | grep /usr/lib32/libGL.so.1.2 > /dev/null ; then
                rm -f /usr/lib32/libGL.so.1.2 > /dev/null || true
                dpkg-divert --remove --rename --package $glxname --divert /usr/lib32/nvidia/libGL.so.1.2.xlibmesa /usr/lib32/libGL.so.1.2 > /dev/null || true
            fi
            
        fi
            

        #Remove diversion of /usr/lib/xorg/modules/extensions/libGLcore.so
        if dpkg-divert --list $glxname | grep /usr/lib/xorg/modules/extensions/libGLcore.so > /dev/null ; then
            dpkg-divert --remove --rename --package $glxname --divert /usr/lib/nvidia/libGLcore.so.xlibmesa /usr/lib/xorg/modules/extensions/libGLcore.so > /dev/null || true
        fi

        #Remove diversion of /usr/lib/xorg/modules/extensions/libglx.so
        if dpkg-divert --list $glxname | grep /usr/lib/xorg/modules/extensions/libglx.so > /dev/null ; then
            rm -f /usr/lib/xorg/modules/extensions/libglx.so > /dev/null || true
            dpkg-divert --remove --rename --package $glxname --divert /usr/lib/nvidia/libglx.so.xserver-xorg-core /usr/lib/xorg/modules/extensions/libglx.so > /dev/null || true
        fi

        #Remove diversion of /usr/lib/libGL.so.1
        if dpkg-divert --list $glxname | grep "/usr/lib/libGL.so.1 " > /dev/null ; then
            rm -f /usr/lib/libGL.so.1 > /dev/null || true
            dpkg-divert --remove --rename --package $glxname --divert /usr/lib/nvidia/libGL.so.1.xlibmesa /usr/lib/libGL.so.1 > /dev/null || true
        fi

        #Remove diversion of /usr/lib/libGL.so.1.2
        if dpkg-divert --list $glxname | grep /usr/lib/libGL.so.1.2 > /dev/null ; then
            rm -f /usr/lib/libGL.so.1.2 > /dev/null || true
            dpkg-divert --remove --rename --package $glxname --divert /usr/lib/nvidia/libGL.so.1.2.xlibmesa /usr/lib/libGL.so.1.2 > /dev/null || true
        fi


        shift
    done

    ;;

    abort-upgrade)
    ;;

    *)
        echo "preinst called with unknown argument \`$1'" >&2
        exit 0
    ;;
esac



# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0