More doxygen generation.

[gedcom-parse.git] / utf8 / utf8.c

diff --git a/utf8/utf8.c b/utf8/utf8.c
index ae7cc4a5b66ab321c267cbc8bfbeab80d4374e01..6c5f5be81745c05b93e73e0b7b6023c069de57d0 100644 (file)
--- a/utf8/utf8.c
+++ b/utf8/utf8.c
@@ -1,15 +1,27 @@
 /* Utility functions for UTF-8
    Copyright (C) 2001, 2002 Peter Verthez
 
-   Permission granted to do anything with this file that you want, as long
-   as the above copyright is retained in all copies.
-   THERE IS NO WARRANTY - USE AT YOUR OWN RISK
+   The UTF8 tools library is free software; you can redistribute it
+   and/or modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The Gedcom parser library is distributed in the hope that it will be
+   useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the Gedcom parser library; if not, write to the
+   Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.
 */
 
 /* $Id$ */
 /* $Name$ */
 
 #include "utf8tools.h"
+#include <string.h>
 
 int is_utf8_string(const char* str)
 {
@@ -67,11 +79,37 @@ int utf8_strlen(const char* str)
   if (!str) return 0;
   
   while (*str) {
-    if ((*str & 0x80) == 0 || (*str & 0xC0) == 0xC0)
-      num_char++;
+    if ((*str & 0xC0) != 0xC0) num_char++;
     str++;
   }
   
   return num_char;
 }
 
+char* next_utf8_char(char* str)
+{
+  if (!str) return NULL;
+
+  if (*str) {
+    str++;
+    while (*str && (*str & 0xC0) == 0x80)
+      str++;
+  }
+  return str;
+}
+
+char* nth_utf8_char(char* str, int n)
+{
+  int num_char = 0;
+  if (!str) return NULL;
+
+  if (*str) {
+    str++;
+    while (*str) {
+      if ((*str & 0xC0) != 0x80) num_char++;
+      if (num_char == n) break;
+      str++;
+    }
+  }
+  return str;
+}