From ea0455e966a95f7a4be0c8f4b9c0481f0392ff39 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Mon, 31 Jan 2011 09:10:09 +0000
Subject: update for Ruby 1.9 compatibility

RSTRING(str)->len no longer works in Ruby 1.9 due to internal
data representation changes for performance.
---
 mahoro.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mahoro.c b/mahoro.c
index 6476bc6..2ee9953 100644
--- a/mahoro.c
+++ b/mahoro.c
@@ -5,6 +5,10 @@
 #include <ruby.h>
 #include <magic.h>
 
+#ifndef RSTRING_LEN
+#  define RSTRING_LEN(s)->len
+#endif
+
 struct MagicCookie
 {
 	magic_t cookie;
@@ -88,7 +92,7 @@ mahoro_buffer(self, input)
 	magic_t cookie = ((struct MagicCookie *) DATA_PTR(self))->cookie;
 
 	if(!(msg = magic_buffer(cookie, StringValuePtr(input),
-	                                RSTRING(StringValue(input))->len))) {
+	                                RSTRING_LEN(StringValue(input))))) {
 		rb_raise(eMahoroError, "failed lookup: %s", magic_error(cookie));
 	}
 
-- 
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