xmakejs

#/bin/bash 
#
#this tool is to expand macro for js
#the common macro define like this:#define MAX 100
#use it like this:x=2*MAX;
#the function macro define like this:#define SUM(a,b) ((a)+(b))
#use it like this:x=${SUM(1,2)};
#
#note:the function macro can't nested
#
#author fangyunjiang
#date:2011-12-15
#
FILE=$1.js
cp $1 $FILE


function match() 
{ 
    local rs 
    rs=$(echo $1|sed -r -n '/'$2'/p') 
    [ -z "$rs" ] && echo 0 || echo 1 
} 

function connect_two_line()
{
	sed -i -e:a -e '/\\$/N;s/\\\n//;ta' $FILE
}

function do_with_common_macro()
{
	local LINE ORIGIN TARGET
	LINE="$1"

	ORIGIN=$(echo $LINE|sed -r 's/#define[[:space:]]+([_0-9a-zA-Z]+)[[:space:]]+(.*)/\1/')
	TARGET=$(echo $LINE|sed -r 's/#define[[:space:]]+([_0-9a-zA-Z]+)[[:space:]]+(.*)/\2/')

	echo do_with_common macro $ORIGIN
	echo origin_exp : $ORIGIN
	echo target_exp : $TARGET
	
 	sed -i 's#'"$ORIGIN"'#'"$TARGET"'#g' $FILE
}


function do_with_function_macro()
{
	local OLINE NLINE NAME OPARAMS NPARAMS OEXP NEXP tmp i
	OLINE="$1"
	
	NAME=$(echo $OLINE|sed -r 's/#define[[:space:]]+([_0-9a-zA-Z]+)[[:space:]]*.*/\1/')
	OEXP=$(echo $OLINE|sed -r 's/#define[[:space:]]+[_0-9a-zA-Z]+[[:space:]]*\(([^()]*)\)[[:space:]]+(.*)/\2/')	
	tmp=$(echo $OLINE|sed -r 's/#define[[:space:]]+[_0-9a-zA-Z]+[[:space:]]*\(([^()]*)\).*/\1/')	
	eval $(echo $tmp|awk '{split($0,t,",")} END {for(i in t) print "OPARAMS["i"]="t[i]}')

	echo do_with_function_macro : $NAME

	echo old_exp : $OEXP
	echo old_params : ${OPARAMS[*]}
	echo
	echo

	while [ 1 ];do

		NLINE=$(sed -n '/\${'"$NAME"'/{p;q}' $FILE)
		if [ -z "$NLINE" ];then
			break
		fi

		NEXP=$(echo $NLINE|sed -r 's/.*(\$\{'"$NAME"'[^}]*\}).*/\1/')
		echo new_exp : $NEXP
		
		tmp=$(echo $NEXP|sed -r 's/.*'"$NAME"'[[:space:]]*\((.*)\)[[:space:]]*\}/\1/'|sed -r 's/\(/@\[/g;s/\)/@\]/g')
		eval $(echo $tmp|awk '{split($0,t,",")} END {for(i in t) print "NPARAMS["i"]="t[i]}')
		
		echo new_params : ${NPARAMS[*]}
		if (( ${#OPARAMS[*]} != ${#NPARAMS[*]} ));then
			echo error:macro params num error
			exit
		fi
		
		tmp="$OEXP"
		for ((i=1;i<=${#NPARAMS[*]};i++));do
			tmp=$(echo $tmp|sed -r 's/'"${OPARAMS[$i]}"'/'"${NPARAMS[$i]}"'/g')
		done
		tmp=$(echo $tmp|sed -r 's/@\[/\(/g;s/@\]/\)/g')
		echo replace_exp : $tmp
		sed -i 's#'"$NEXP"'#'"$tmp"'#g' $FILE

		echo
		echo
	done
}


function parse_all()
{
	while [ 1 ];do
	
		LINE=$(sed -n '/#define/{p;q}' $FILE)
		if [ -z "$LINE" ];then
			break
		fi
		sed -i '0,/#define/{/#define/d}' $FILE
	
		n=$(match "$LINE" "#define[[:space:]]+[_0-9a-zA-Z]+\(.*\)")
	    if [ $n -eq 0 ];then
			do_with_common_macro "$LINE"
		else
			do_with_function_macro "$LINE"
	    fi 
	
	done
}

function main()
{
	connect_two_line
	parse_all
	sed -i '/^[[:space:]]*$/d' $FILE
	echo //////////////////////outfile//////////////////////////////////
	cat $FILE
}

main