#! /bin/sh

# This script was created in a effort to make patch management a bit easier.

# It list all the patches in the current tree and identifies if they are

# present in the kernel.spec, PatchList.txt, both files or neither.

#

# eg. ./check-patchlist.sh [optional flag]

function usage(){

    echo "List all the patches currently in the tree. It also helps identify"

    echo "if the patch is present in kernel.spec or PatchList.txt.          "

    echo "-h, --help                                                        "

    echo "-t, --tracked       patches in both kernel.spec and PatchList.txt "

    echo "-p, --patchlist     patches added to PatchList.txt.               "

    echo "-s, --specfile      patches added to kernel.spec.                 "

    echo "-n, --not-tracked   patches in the tree but not  in PatchList.txt "

    echo "                     or kernel.spec                               "

}

BASEDIR=$(dirname "$( cd $(dirname $BASH_SOURCE[0]) && pwd)")

pushd $BASEDIR > /dev/null

function list_all(){

    echo "===========Legend==========================="

    echo ".   In kernel.spec                          "

    echo "*   In PatchList.txt                        "

    echo "+   In PatchList.txt & Kernel.spec          "

    echo "-   Neither in PatchList.txt nor kernel.spec"

    echo "============================================"

    for patch in $(ls *.patch); do

	if [ ! -z "$(grep $patch PatchList.txt)" ] && [ ! -z "$(grep $patch kernel.spec)" ]

	then

	    echo "+ ${patch}" # Patches in kernel.spec and PatchList.txt

	elif [ ! -z "$(grep $patch PatchList.txt)" ] && [ -z "$(grep $patch kernel.spec)" ]

	then

	     echo "* ${patch}" # Patches in PatchList.txt but not in kernel.spec

	elif [ -z "$(grep $patch PatchList.txt)" ] && [ ! -z "$(grep $patch kernel.spec)" ]

	then

	    echo ". ${patch}" # Patches in kernel.spec but not in PatchList.txt

	else

	    echo "- ${patch}" # Neither in PatchList.txt nor kernel.spec

	fi

    done

}

function list_present_not_added(){

    for patch in $(ls *.patch); do

	if [ -z "$(grep $patch PatchList.txt)" ] && [ -z "$(grep $patch kernel.spec)" ]

	then

	    echo $patch

	fi

    done

}

function list_present_added(){

    for patch in $(ls *.patch); do

	if [ ! -z "$(grep $patch PatchList.txt)" ] && [ ! -z "$(grep $patch kernel.spec)" ]

	then

	    echo $patch

	fi

    done

}

function list_patchList(){

    for patch in $(ls *.patch); do

	if [ ! -z "$(grep $patch PatchList.txt)" ] && [ -z "$(grep $patch kernel.spec)" ]

	then

	    echo $patch

	fi

    done

}

function list_specfile(){

    for patch in $(ls *.patch); do

	if [ -z "$(grep $patch PatchList.txt)" ] && [ ! -z "$(grep $patch kernel.spec)" ]

	then

	    echo $patch

	fi

    done

}

if [ -z "$@" ]; then

    list_all

else

    for opt in "$@"; do

	case $opt in

	    -t|--tracked)

		list_present_added

		;;

	    -s|--specfile)

		list_specfile

		;;

	    -h|--help)

		usage

		;;

	    -n|--not-added)

		list_present_not_added

		;;

	    -p|--patchlist)

		list_patchList

		;;

	    *)

		usage

		;;

	esac

    done

fi

popd > /dev/null