#!/bin/sh

. patchfns >/dev/null || . /usr/lib/patch-scripts/patchfns >/dev/null || { \
	echo "Impossible to find my library 'patchfns'."
	echo "Check your install, or go to the right directory"
	exit 1
}

# do_remove()
# {
# 	if patch -R -p1 -s -i $P/patches/"$1".patch
# 	then
# 		true
# 	else
# 		echo SOMETHING WENT WRONG
# 		exit 1
# 	fi
# }

do_remove()
{
	FILES=$(cat $P/pc/$1.pc)
	for file in $FILES ; do
	    base_dir=`pwd`	
	    if [ -L "$file"~"orig" ]; then
	    	if [ `readlink "$file"~"orig"` = "$base_dir/""$file"~"$1" ]; then
		    rm -rf "$file"~"orig"
	        fi
	    fi 
	    if [ -f "$file"~"$1" ]; then
	    	mv -f "$file"~"$1" "$file"
            else
	    	rm -f "$file"
            fi
        done
        true
}

kill_old_ones()
{
	FILES=$(cat $P/pc/$1.pc)
	for file in $FILES
	do
		rm -f "$file"~"$1"
	done
}

usage()
{
	echo "Usage: rpatch patchname"
	exit 1
}

if [ $# == 0 ]
then
	usage
fi

PATCH_NAME=$(stripit $1)

warn_top_current
if is_applied "$PATCH_NAME"
then
#	if can_remove "$PATCH_NAME"
#	then
		if [ ! -f $P/pc/$PATCH_NAME.pc ]; then
			exit 1
		fi
		do_remove "$PATCH_NAME"
		kill_old_ones "$PATCH_NAME"
		remove_from_db "$PATCH_NAME"
#	else
#		echo "$PATCH_NAME" does not remove cleanly
#		exit 1
#	fi
else
	echo "$PATCH_NAME" is not applied
	exit 1
fi

top=$(top_patch)
if [ x"$top" == x ]
then
	msg="no patches applied"
else
	msg="now at $top"
fi

echo Removed $PATCH_NAME, $msg