From adc15cc997f3d1a3d067c77962437d291e73c1f8 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 12 Jun 2006 13:30:32 +0000
Subject: * sprintf.c (rb_f_sprintf): adjust precision length to prevent  
 splitting multi-byte characters.  [ruby-list:42389]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@10255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 sprintf.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'sprintf.c')

diff --git a/sprintf.c b/sprintf.c
index 5e85d9522..3c0bc5cd2 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -13,6 +13,7 @@
 **********************************************************************/
 
 #include "ruby.h"
+#include "re.h"
 #include <ctype.h>
 #include <math.h>
 
@@ -413,6 +414,23 @@ rb_f_sprintf(argc, argv)
 			len = prec;
 		    }
 		}
+		{
+		    char *s, *send;
+		    long l;
+
+			s = RSTRING(str)->ptr;
+			send = s + RSTRING(str)->len;
+			l = 0;
+			while (s < send) {
+			    long n = mbclen(*s);
+			    if (l + n > len) {
+				len = l;
+				break;
+			    }
+			    l += n;
+			    s += n;
+			}
+		}
 		if (flags&FWIDTH) {
 		    if (width > len) {
 			CHECK(width);
-- 
cgit