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      1 #! /bin/sh
      2 
      3 # $NetBSD: grab-version.sh,v 1.3 2026/07/10 21:54:30 kre Exp $
      4 
      5 # Free unlicensed public-domain code.
      6 # Found under a bush behind an outdoor dunny in Wagga Wagga (mid 1800's).
      7 # Your risk entirely if you use it.
      8 
      9 case "$#" in
     10 1)	;;
     11 *)	printf >&2 'Usage: %s NETBSDSRCDIR\n' "${0##*/}"; exit 1;;
     12 esac
     13 
     14 # GEN='$NetBSD: grab-version.sh,v 1.3 2026/07/10 21:54:30 kre Exp $'
     15 # GEN=${GEN#'$NetBSD: '}
     16 # GEN=${GEN%' Exp $'}
     17 
     18 VERSION_FILE="${1}/sys/sys/param.h"
     19 
     20 : ${SED:=sed}
     21 : ${DATE:=date}
     22 
     23 if ( O=$(eval "printf %s $'X\tY'") && [ "$O" = 'X	Y' ] ) >/dev/null 2>&1
     24 then
     25 	# Use this when possible, it is more obvious what is happening.
     26 	VERS_MATCH=$'^#define[ \t][ \t]*__NetBSD_Version__[ \t][ \t]*[1-9]'
     27 	IFS=$' \t'
     28 else
     29 	# The same as above, avoiding use of $'...' (for old shells)
     30 	VERS_MATCH='^#define[ 	][ 	]*__NetBSD_Version__[ 	][ 	]*[1-9]'
     31 	IFS=' 	'
     32 fi
     33 
     34 VL=$( "${SED}" -n							\
     35 	-e "/${VERS_MATCH}/ {"						\
     36 	-e	p							\
     37 	-e	q							\
     38 	-e }			"${VERSION_FILE}"
     39      )	||
     40 {
     41 	printf >&2 '%s: No __NetBSD_Version__ in %s\n'			\
     42 			"${0##*/}" "${VERSION_FILE}"
     43 	exit 1
     44 }
     45 
     46 # See IFS setting above (this is the sole occasion it is used)
     47 read -r def nbv version comment <<!EOF!
     48 ${VL}
     49 !EOF!
     50 
     51 format()
     52 {
     53 	printf >&2 '%s: Badly formatted version line from %s:\n\t%s\n'	\
     54 		"${0##*/}" "${VERSION_FILE}" "${VL}"
     55 	exit 1
     56 }
     57 
     58 if [ "${def}" != '#define' ] || [ "${nbv}" != __NetBSD_Version__ ]
     59 then
     60 	format
     61 fi
     62 
     63 comment=${comment#* }
     64 comment=${comment% *}
     65 case "${comment}" in
     66 *[/*]*)	format		;;
     67 'NetBSD '[1-9]*)	comment="${comment#NetBSD }";;
     68 *)	format		;;
     69 esac
     70 
     71 case "${version}" in
     72 *[!0-9]*)	format	;;
     73 [1-9]*[0-9])		;;
     74 *)		format	;;
     75 esac
     76 
     77 printf "'%s'\n" '-DUSER_OSTYPE_VALUE="NetBSD"'
     78 printf "'%s'\n" "-DUSER_OSREVISION_VALUE=${version}"
     79 printf "'-DUSER_OSRELEASE_VALUE=\"%s\"'\n" "${comment}"
     80 printf "'-DUSER_BUILDTIME_VALUE=\"%s%s\"'\n"			\
     81     "$( TZ=UTC "${DATE}" -u					\
     82 	${MKREPRO_TIMESTAMP:+-r "${MKREPRO_TIMESTAMP}"}		\
     83 	'+%Y-%m-%d %T UTC' )"					\
     84     "${MKREPRO_TIMESTAMP:+ !}"
     85