#
# This file is called by /etc/init.d/vdr
#

getplugins ()
{
    local plugin_order
    local installed_plugins
    local ordered_plugins
    local plugin
    local i
    local arguments
    local plugins
    local packages
    local patchelvels
    local leftout
    local leftout2
    local vdrcmd
    local version

    vdrcmd="/usr/bin/vdr -u $USER -g $GROUP $OPTIONS"

    if [ "$NONPTL" = "1" -a `uname -m` != x86_64 ]; then
        vdrcmd="LD_ASSUME_KERNEL=2.4.1 $vdrcmd"
    fi

    version=`eval "$vdrcmd -V -L/usr/bin/vdr 2>/dev/null | sed 's/.*(\(.*\)).*/\1/'"`
    test "$version" || version="unknown version"

    PLUGINS=""

    echo -ne "\nSearching for plugins (VDR $version):"

    # find installed plugins
    plugins=(`find ${PLUGIN_DIR} -maxdepth 1 \
                   -name "${PLUGIN_PREFIX}*.so.${version}" | \
              xargs -r dpkg -S 2>&1 | \
              sed "s/^dpkg:/'':/" | \
              sed "s/:.*${PLUGIN_PREFIX}\([^\.]\+\)\.so\.${version}.*$/:\1/"`)
    installed_plugins=(`echo ${plugins[@]} | sed 's/[^ ]*://g'`)
    packages=(   vdr   `echo ${plugins[@]} | sed 's/:[^ ]*//g'`)

    if [ "$PLUGIN_CHECK_PATCHLEVEL" == "yes" ]; then
        # extract patchlevel info
        eval "patchlevels=($(LANG=en;dpkg -s ${packages[@]} 2>&1 | awk -F ':' '\
            /^Package: /                         {p=$2} \
            /^Package.*is not installed/         {print "\"\""} \
            (/[pP]atchlevel:/ || /^$/) && p!=""  {print "\""$2"\"";p=""}'))"

        # move plugins with incompatible patchlevel to $leftout
        for (( i=1 ; i<${#patchlevels[@]} ; i++ )); do
            if [ "${patchlevels[0]}" != "${patchlevels[$i]}" ]; then
                leftout="${leftout} ${installed_plugins[$((i-1))]}"
                unset installed_plugins[$((i-1))]
            fi
        done

        # cleanup the installed_plugins array
        installed_plugins=( "${installed_plugins[@]}" )
    fi

    if [ "$PLUGIN_CHECK_STARTABLE" == "yes" ]; then

        # move not startable plugins to $leftout2
        for (( i=${#installed_plugins[@]}, i-- ; i >= 0 ; i-- )); do
            if ! eval "$vdrcmd -V -L $PLUGIN_DIR -P ${installed_plugins[$i]}" \
                2>/dev/null | grep -q "^${installed_plugins[$i]} "; then
                leftout2="${leftout2} ${installed_plugins[$i]}"
                unset installed_plugins[$i]
            fi
        done

        # cleanup the installed_plugins array
        installed_plugins=( "${installed_plugins[@]}" )
    fi

    if [ -r "$PLUGIN_CFG_DIR/order.conf" ]; then
        # load plugin order
        plugin_order=( `cat $PLUGIN_CFG_DIR/order.conf | sed "s/#.*$//"` )

        # move ordered plugins to list of ordered plugins
        for plugin in ${plugin_order[@]}; do
            for (( i=0 ; i<${#installed_plugins[@]} ; i++ )); do
                if [ "$plugin" == "-${installed_plugins[$i]}" ]; then
                    unset installed_plugins[$i]
                    installed_plugins=( "${installed_plugins[@]}" )
                    break
                fi
                if [ "$plugin" == "${installed_plugins[$i]}" ]; then
                    ordered_plugins=( "${ordered_plugins[@]}" "$plugin" )
                    unset installed_plugins[$i]
                    installed_plugins=( "${installed_plugins[@]}" )
                    break
                fi
            done
        done
    fi

    # append unordered to ordered plugins
    ordered_plugins=( "${ordered_plugins[@]}" "${installed_plugins[@]}" )

    # add the command line arguments for each plugin
    for plugin in ${ordered_plugins[@]}; do
        echo -n " $plugin"
        if [ -r "$PLUGIN_CFG_DIR/plugin.$plugin.conf" ] ; then
            arguments=( `cat $PLUGIN_CFG_DIR/plugin.$plugin.conf | sed "s/#.*$//"` )
            PLUGINS="$PLUGINS -P \"$plugin ${arguments[*]}\""
        else
            PLUGINS="$PLUGINS -P $plugin"
        fi
    done

    # warn about incompatible plugins
    if [ "$leftout" != "" ]; then
        echo -ne "\nWARNING: The following plugins have been left out due to"\
             "possible binary incompatibility: "
        echo -n $leftout
    fi

    # warn about not startable plugins
    if [ "$leftout2" != "" ]; then
        echo -ne "\nWARNING: The following plugins have been left out due to"\
             "really binary incompatibility: "
        echo -n $leftout2
    fi
}