src/system/libroot/posix/wchar/mblen.c

   1 /*
   2 ** Copyright 2011, Oliver Tappe, zooey@hirschkaefer.de. All rights reserved.
   3 ** Distributed under the terms of the Haiku License.
   4 */
   5
   6 #include <wchar_private.h>
   7
   8
   9  int
  10 __mblen(const char* s, size_t n)
  11  {
  12         static mbstate_t internalMbState;
  13         int rval;
  14
  15         if (s == NULL) {
  16                 static const mbstate_t initial;
  17
  18                 internalMbState = initial;
  19
  20                 return 0;       // we do not support stateful converters
  21         }
  22
  23         rval = __mbrtowc(NULL, s, n, &internalMbState);
  24
  25         if (rval == -1 || rval == -2)
  26                 return -1;
  27
  28         return rval;
  29  }
  30
  31
  32 B_DEFINE_WEAK_ALIAS(__mblen, mblen);