1 files changed, 48 insertions, 0 deletions
diff --git a/config/getver.sh b/config/getver.sh
new file mode 100755
index 0000000..589802f
--- /dev/null
+++ b/config/getver.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+# Simple script to extract the version number parts from src/gd.h.  If
+# called with the middle word of the version macro, it prints the
+# value of that macro.  If called with no argument, it outputs a
+# human-readable version string.  This must be run in the project
+# root.  It is used by configure.ac and docs/naturaldocs/run_docs.sh.
+
+TOPDIR="${0%/*}/.."
+HEADER="${TOPDIR}/src/gd.h"
+SENTINEL="/*version605b5d1778*/"
+
+getpart() {
+	awk -vfield="GD_${1}_VERSION" -vsentinel="${SENTINEL}" '
+		$1 == "#define" && $2 == field && $NF == sentinel {
+			gsub(/^"/, "", $3)
+			gsub(/"$/, "", $3)
+			print $3
+		}
+	' "${HEADER}"
+}
+
+case $# in
+0)
+	printf '%s.%s.%s%s\n' \
+		$(getpart MAJOR) \
+		$(getpart MINOR) \
+		$(getpart RELEASE) \
+		$(getpart EXTRA)
+	;;
+1)
+	case $1 in
+	MAJOR|MINOR|RELEASE|EXTRA)
+		part=$(getpart "$1")
+		if [ -n "${part}" ]; then
+			printf '%s' "${part}"
+		fi
+		;;
+	*)
+		exit 1
+		;;
+	esac
+	;;
+*)
+	echo "$0: error: script takes at most 1 arg"
+	exit 1
+	;;
+esac