Factor release version functions into new script.

tools/release/helpers.sh

@@ -0,0 +1,60 @@
+#!/bin/sh -e
+
+die() {
+	echo "$@" >&2
+	exit 1
+}
+
+package_info_load_name() {
+	grep AC_INIT configure.in | perl -ne 's/^.+\(\[([-\w]*)\],.+$/$1/ and print'
+}
+package_info_load_version() {
+	grep AC_INIT configure.in | perl -ne 's/^.+\[([-\w\.]*)\],$/$1/ and print'
+}
+
+package_info_load() {
+	[ -f "configure.in" ] || \
+		die "package_info_load: configure.in is missing"
+
+	PACKAGE_NAME="$(package_info_load_name)"
+	# todo: fix this
+	PACKAGE_TARNAME="${PACKAGE_NAME}"
+
+	PACKAGE_VERSION="$(package_info_load_version)"
+
+	[ "${PACKAGE_NAME}" -a "${PACKAGE_VERSION}" ] || \
+		die "package information is missing from configure script"
+
+	PACKAGE_VERSION_TAGS=
+	[ "${PACKAGE_VERSION/-/}" = "${PACKAGE_VERSION}" ] || \
+		PACKAGE_VERSION_TAGS="-${PACKAGE_VERSION#*-}"
+	PACKAGE_VERSION_BASE="${PACKAGE_VERSION%%-*}"
+	PACKAGE_MICRO="${PACKAGE_VERSION_BASE##*.}"
+	PACKAGE_MAJOR_AND_MINOR="${PACKAGE_VERSION_BASE%.*}"
+	PACKAGE_MAJOR="${PACKAGE_MAJOR_AND_MINOR%.*}"
+	PACKAGE_MINOR="${PACKAGE_MAJOR_AND_MINOR#*.}"
+
+	[ "${RELEASE_FINAL}" ] \
+		&& RELEASE_VERSION="${PACKAGE_VERSION_BASE}" \
+		|| RELEASE_VERSION="${PACKAGE_VERSION/-dev/}"
+	PACKAGE_RELEASE="${PACKAGE_TARNAME}-${RELEASE_VERSION}"
+	PACKAGE_STRING="${PACKAGE_NAME} ${PACKAGE_VERSION}"
+}
+
+package_info_show() {
+	cat <<INFO
+Name: ${PACKAGE_TARNAME}
+Version: ${PACKAGE_VERSION}
+Release: ${RELEASE_VERSION}
+   Number: ${PACKAGE_VERSION_BASE}
+   Series: ${PACKAGE_MAJOR_AND_MINOR}
+    Major: ${PACKAGE_MAJOR}
+    Minor: ${PACKAGE_MINOR}
+    Micro: ${PACKAGE_MICRO}
+     Tags: ${PACKAGE_VERSION_TAGS}
+   Full: ${PACKAGE_TARNAME}-${PACKAGE_VERSION_BASE}${PACKAGE_VERSION_TAGS}
+Release: ${PACKAGE_RELEASE}
+   Type: ${RELEASE_TYPE}
+INFO
+}
+