Add ruby_get_version() and ruby_get_implementation() convenience helper functions

diff --git a/eclass/ruby-ng.eclass b/eclass/ruby-ng.eclass
index 407e3077f0b5072c1978c25507d66e6d7aff120d..b8cb5d60ab12cdc866d4192ba2db2c1a6c99bd3a 100644 (file)
--- a/eclass/ruby-ng.eclass
+++ b/eclass/ruby-ng.eclass
@@ -1,6 +1,6 @@
 # Copyright 1999-2009 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/ruby-ng.eclass,v 1.9 2010/04/02 20:26:21 a3li Exp $
+# $Header: /var/cvsroot/gentoo-x86/eclass/ruby-ng.eclass,v 1.10 2010/04/05 07:41:09 a3li Exp $
 #
 # @ECLASS: ruby-ng.eclass
 # @MAINTAINER:
@@ -448,3 +448,29 @@ ruby_get_hdrdir() {
 
        echo "${rubyhdrdir}"
 }
+
+# @FUNCTION: ruby_get_version
+# @RETURN: The version of the Ruby interpreter in ${RUBY}, or what 'ruby' points to.
+ruby_get_version() {
+       local ruby=${RUBY:-$(type -p ruby 2>/dev/null)}
+
+       echo $(${ruby} -e 'puts RUBY_VERSION')
+}
+
+# @FUNCTION: ruby_get_implementation
+# @RETURN: The implementation of the Ruby interpreter in ${RUBY}, or what 'ruby' points to.
+ruby_get_implementation() {
+       local ruby=${RUBY:-$(type -p ruby 2>/dev/null)}
+
+       case $(${ruby} --version) in
+               *Enterprise*)
+                       echo "ree"
+                       ;;
+               *jruby*)
+                       echo "jruby"
+                       ;;
+               *)
+                       echo "mri"
+                       ;;
+       esac
+}