#!/bin/sh
set -e

: ${TOOL_SED:=sed}
: ${TOOL_GREP:=grep}
: ${TOOL_WC:=wc}
CONF=${1:-dhcpcd-definitions.conf}
CONF_SMALL=${2:-dhcpcd-definitions-small.conf}
H=${3:-dhcpcd-embedded.h.in}

INITDEFINES=$($TOOL_GREP "^define " $CONF | $TOOL_WC -l)
INITDEFINENDS=$($TOOL_GREP "^definend " $CONF | $TOOL_WC -l)
INITDEFINE6S=$($TOOL_GREP "^define6 " $CONF | $TOOL_WC -l)
INITDEFINES_SMALL=$($TOOL_GREP "^define " $CONF_SMALL | $TOOL_WC -l)
INITDEFINENDS_SMALL=$($TOOL_GREP "^definend " $CONF_SMALL | $TOOL_WC -l)
INITDEFINE6S_SMALL=$($TOOL_GREP "^define6 " $CONF_SMALL | $TOOL_WC -l)
$TOOL_SED \
	-e "s/@INITDEFINES@/$INITDEFINES/" \
	-e "s/@INITDEFINENDS@/$INITDEFINENDS/" \
	-e "s/@INITDEFINE6S@/$INITDEFINE6S/" \
	-e "s/@INITDEFINES_SMALL@/$INITDEFINES_SMALL/" \
	-e "s/@INITDEFINENDS_SMALL@/$INITDEFINENDS_SMALL/" \
	-e "s/@INITDEFINE6S_SMALL@/$INITDEFINE6S_SMALL/" \
	$H