[vala] Add --api-version option

[JÃrg Billeter <juergbi src gnome org>]

commit a4cdb46acc72a8f892be51add007cd58447ce590
Author: JÃrg Billeter <j bitron ch>
Date:   Thu Nov 29 13:59:35 2012 +0100

    Add --api-version option

 compiler/valacompiler.vala |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/compiler/valacompiler.vala b/compiler/valacompiler.vala
index 9f26a16..1f471ed 100644
--- a/compiler/valacompiler.vala
+++ b/compiler/valacompiler.vala
@@ -27,6 +27,7 @@ class Vala.Compiler {
 	static string basedir;
 	static string directory;
 	static bool version;
+	static bool api_version;
 	[CCode (array_length = false, array_null_terminated = true)]
 	static string[] sources;
 	[CCode (array_length = false, array_null_terminated = true)]
@@ -97,6 +98,7 @@ class Vala.Compiler {
 		{ "basedir", 'b', 0, OptionArg.FILENAME, ref basedir, "Base source directory", "DIRECTORY" },
 		{ "directory", 'd', 0, OptionArg.FILENAME, ref directory, "Output directory", "DIRECTORY" },
 		{ "version", 0, 0, OptionArg.NONE, ref version, "Display version number", null },
+		{ "api-version", 0, 0, OptionArg.NONE, ref api_version, "Display API version number", null },
 		{ "ccode", 'C', 0, OptionArg.NONE, ref ccode_only, "Output C code", null },
 		{ "header", 'H', 0, OptionArg.FILENAME, ref header_filename, "Output C header file", "FILE" },
 		{ "use-header", 0, 0, OptionArg.NONE, ref use_header, "Use C header file", null },
@@ -528,6 +530,9 @@ class Vala.Compiler {
 		if (version) {
 			stdout.printf ("Vala %s\n", Config.BUILD_VERSION);
 			return 0;
+		} else if (api_version) {
+			stdout.printf ("%s\n", Config.PACKAGE_SUFFIX.substring (1));
+			return 0;
 		}
 		
 		if (sources == null && fast_vapis == null) {