src/usr.bin/tmux/utf8.c - diff

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-version 1.37, 2017/05/31 17:56:48
+version 1.38, 2017/06/04 09:02:36
 Line 207
 Line 207
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          return (len);
  }
+ /* Does this string contain anything that isn't valid UTF-8? */
+ int
+ utf8_isvalid(const char *s)
+ {
+         struct utf8_data         ud;
+         const char              *end;
+         enum utf8_state          more;
+         size_t                   i;
+         end = s + strlen(s);
+         while (s < end) {
+                 if ((more = utf8_open(&ud, *s)) == UTF8_MORE) {
+                         while (++s < end && more == UTF8_MORE)
+                                 more = utf8_append(&ud, *s);
+                         if (more == UTF8_DONE)
+                                 continue;
+                         return (0);
+                 }
+                 if (*s < 0x20 || *s > 0x7e)
+                         return (0);
+                 s++;
+         }
+         return (1);
+ }
  /*
   * Sanitize a string, changing any UTF-8 characters to '_'. Caller should free
   * the returned string. Anything not valid printable ASCII or UTF-8 is