#!/bin/sh -
#	$Id$
#
# Automatically generate message id.

# Usage: A BDB#### would be replaced with an unused message id in:
# 1) DB_STR(BDB####
# 2) DB_STR_A(BDB####
# NOTE: Do not add whitespace between DB_STR( or DB_STR_A( and the message ID.

# NOTE: Please update the MSG_DIRS if there is any new source dir.
MSG_DIRS="../src/ ../util/ ../lang/dbm/ ../dist/gen_msg.awk"

# Environment Configuration
GREP_CMDS="grep ggrep"
for i in $GREP_CMDS; do
	if [ "`which $i`" = "" ]; then
		continue
	fi
	echo "s_message_id test" > s_message_id.tmp
	$i "s_message_id test"  s_message_id.tmp -o --include=*.tmp | \
	    $i -v "s_message_id.txt" > s_message_id.tmp.out 2>&1
	if [ `$i "unrecognized option" s_message_id.tmp.out | wc -l` \
	    -eq 0 ] && [ `$i "invalid option" s_message_id.tmp.out | \
	    wc -l` -eq 0 ] && [ `$i "can't open" s_message_id.tmp.out | \
	    wc -l` -eq 0 ]; then
		GREP_CMD=$i
		break
	fi
	rm s_message_id.tmp s_message_id.tmp.out
done
if [ "$GREP_CMD" = "" ]; then
	echo "UNSUPPORTED COMMAND: (g)grep -o --include"
	echo "Please try other platform"
	exit 
fi

pref=MSG_INDX

get_value() {
	value=${1}${2}
	eval "echo $`echo $value`"
}

get_max() {
	if [ ${1} -gt ${2} ] ; then
		eval "echo ${1}"
	else
		eval "echo ${2}"
	fi
}

# Iterate source files and replace "BDB####" with the real message id.
for i in $MSG_DIRS; do
	for f in `$GREP_CMD BDB#### -r $i -wl --include=*.c --include=*.h \
 	    --include=*.in --include=*.awk | \
	    $GREP_CMD -v "../util/db_dump185.c" | \
	    $GREP_CMD -v "../util/db_sql_codegen"`; do
		IFS='/'
		set $f
		# There are 11 categories in the MSG_DIRS:
		# 1) COMMON; 2) DB; 3) AM; 4) ENV; 5) LOCK; 6) LOG;
		# 7) MPOOL; 8) REP; 9) SEQUENCE; 10) TXN; 11) UTIL.
		#
		# NOTE: Please add a new block (see below) and assign the values
		# of cat_indx and cat_dirs if there is new group, or update the
		# existing block if there is new source tree under the existing
		# group.
		if [ "$i" = "../util/" ] || [ "$i" = "../lang/dbm/" ]; then
			cat_indx=10
			cat_dirs="../util/ ../lang/dbm/"
		elif [ "$3" = "common" ] || [ "$3" = "crypto" ] || \
		    [ "$3" = "fileops" ] || [ "$3" = "hmac" ] || \
		    [ "$3" = "os" ] || [ "$3" = "os_qnx" ] || \
		    [ "$3" = "os_vxworks" ] || [ "$3" = "os_windows" ]; then 
			cat_indx=0
			cat_dirs=$i"common "$i"crypto "$i"fileops "
			cat_dirs=$cat_dirs$i"hmac "$i"os "$i"os_qnx "
			cat_dirs=$cat_dirs$i"os_vxworks "$i"os_windows"
		elif [ "$3" = "db" ] || [ "$3" = "dbinc" ] || \
		    [ "$3" = "dbinc_auto" ]; then
			cat_indx=1
			cat_dirs=$i"db "$i"dbinc "$i"dbinc_auto"
		elif [ "$3" = "btree" ] || [ "$3" = "hash" ] || \
		    [ "$3" = "heap" ] || [ "$3" = "qam" ]; then
			cat_indx=2
			cat_dirs=$i"btree "$i"hash "$i"heap "$i"qam"
		elif [ "$3" = "dbreg" ] || [ "$3" = "env" ] ; then
			cat_indx=3
			cat_dirs=$i"dbreg "$i"env"
		elif [ "$3" = "lock" ] || [ "$3" = "mutex" ]; then
			cat_indx=4
			cat_dirs=$i"lock "$i"mutex"
		elif [ "$3" = "log" ]; then
			cat_indx=5
			cat_dirs=$i"log"
		elif [ "$3" = "mp" ]; then
			cat_indx=6
			cat_dirs=$i"mp"
		elif [ "$3" = "rep" ] || [ "$3" = "repmgr" ] || \
			[ "$3" = "gen_msg.awk" ] ; then
			cat_indx=7
			cat_dirs="../src/rep ../src/repmgr ../dist/gen_msg.awk"
		elif [ "$3" = "sequence" ]; then
			cat_indx=8
			cat_dirs=$i"sequence"
		elif [ "$3" = "txn" ] || [ "$3" = "xa" ]; then
			cat_indx=9
			cat_dirs=$i"txn "$i"xa"
		else
			echo "ERROR UNKNOWN PATH:" "$i""$3"
			exit
		fi

		unset IFS

		# Initialize MSG_INDX for each group if it is never initialized.
		if [ "`get_value $pref $cat_indx`" = "" ]; then
			# Get the start index, that is the next available number
			# for the current group. If there is no existing message
			# marked by DB_STR or DB_STR_A, the start index is the
			# first available integer in its range. Unless, it is
			# the next available integer in its range.
			MSG_START_NUM=`expr $cat_indx \* 500 + 1`
			DB_STR_NUM=`$GREP_CMD -E "DB_STR\(\"[0-9]{4}\"" -r \
			    $cat_dirs | wc -l`
			if [ $DB_STR_NUM -eq 0 ]; then
				DB_STR_NUM=`expr 0 + $MSG_START_NUM`
			else
				DB_STR_NUM=`$GREP_CMD -E "DB_STR\(\"[0-9]{4}\"" -oh \
				    -r $cat_dirs | sort | tail -n 1 | \
				    sed -e "s/DB_STR(//g" | sed -e "s/\"//g"`
				DB_STR_NUM=`expr 1 + $DB_STR_NUM`
			fi

			DB_STR_A_NUM=`$GREP_CMD -E "DB_STR_A\(\"[0-9]{4}\"" -r \
			    $cat_dirs | wc -l`
			if [ $DB_STR_A_NUM -eq 0 ]; then
				DB_STR_A_NUM=`expr 0 + $MSG_START_NUM`
			else
				DB_STR_A_NUM=`$GREP_CMD -E \
				    "DB_STR_A\(\"[0-9]{4}\"" -oh -r $cat_dirs | \
				    sort | tail -n 1 | \
				    sed -e "s/DB_STR_A(//g" | sed -e "s/\"//g"`
				DB_STR_A_NUM=`expr 1 + $DB_STR_A_NUM`
			fi

			MSG_START_INDX=`get_max $DB_STR_NUM $DB_STR_A_NUM`
			eval "$pref$cat_indx=$MSG_START_INDX"
		fi

		cat $f | awk '{
			if(num<max && sub(/BDB####/, fill(num))==1) num++;
			print $0>"tmp.tmp"
		}END{
			printf("%s", num)>"tmp.num"} 
			function fill(i) {
				s=""
				j=4-length(i)
				while(j) {
				s=0""s
				j--
			}
			return "\""s""i"\""
		}' num=`get_value $pref $cat_indx` \
		max=`expr \( $cat_indx + 1 \) \* 500`
		cp tmp.tmp $f
		eval "$pref$cat_indx=`sed 'q' tmp.num`"
		if [ "$cat_indx" -lt 11 ]; then
			if [ `get_value $pref $cat_indx` -ge \
			    `expr \( $cat_indx + 1 \) \* 500` ]; then
				echo "RANGE FULL"
			fi
		else
			echo "ERROR CATEGORY NUMBER: " $cat_indx
		fi
		rm tmp.tmp tmp.num
	done
done

# Check if there is any remaining "BDB####". 
# NOTE: If "BDB####" is not .c, .h, .in files, they won't be updated with the 
# real message id.
if [ `$GREP_CMD "BDB####" -r $MSG_DIRS | wc -l` -gt 0 ]; then
	echo "WARNING: There is remaining BDB####. Please check:"
	$GREP_CMD "BDB####" -r $MSG_DIRS
fi