#! /bin/sh
proc print_version_string
{
	if grep GIT $1 >/dev/null
	{
		read ver <$1
		echo $ver | tr -d '\012'
		date +_%Y_%m_%d
	} else {
		cat $1
	}
}
if test $Argc != 3
{
	echo "Usage: gen_version_header.sh <version file> <template> <output file>" !1 > !2
	exit 1
}
setglobal version_string = $[print_version_string $1]
sed "s/%%LIBPCAP_VERSION%%/$version_string/" $2 >$3