* io.c (appendline): specifying limit should not generate broken

byte sequence.  strings should be rounded.  [ruby-dev:33088]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Jan 15 00:05:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* io.c (appendline): specifying limit should not generate broken
+	  byte sequence.  strings should be rounded.  [ruby-dev:33088]
+
 Mon Jan 14 23:33:02 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* ext/nkf/lib/kconv.rb (Kconv.tolocale): argument is str.

io.c

@@ -1712,6 +1712,18 @@ appendline(rb_io_t *fptr, int delim, const char *rsptr, int rslen, VALUE *strp,
 	    if (c != EOF) {
 		RSTRING_PTR(str)[last++] = c;
 	    }
+	    if (limit > 0 && limit == pending) {
+		char *p = fptr->rbuf+fptr->rbuf_off;
+		char *pp = p + limit;
+		char *pl = rb_enc_left_char_head(p, pp, io_read_encoding(fptr));
+
+		if (pl < pp) {
+		    int diff = pp - pl;
+		    pending -= diff;
+		    limit = pending;
+		    rb_str_set_len(str, RSTRING_LEN(str)-diff);
+		}
+	    }
 	    read_buffered_data(RSTRING_PTR(str) + last, pending, fptr); /* must not fail */
 	    limit -= pending;
 	    *lp = limit;

version.h

@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2008-01-14"
+#define RUBY_RELEASE_DATE "2008-01-15"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20080114
+#define RUBY_RELEASE_CODE 20080115
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2008
 #define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 14
+#define RUBY_RELEASE_DAY 15
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];