sdk/lib/crt/mbstring/mbstrlen.c at master

Reactos

reactos / sdk / lib / crt / mbstring / mbstrlen.c

at master 37 lines 842 B view raw

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Colin Finck Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys. 8y ago

c2c66aff

 1/*
 2 * COPYRIGHT:   See COPYING in the top level directory
 3 * PROJECT:     ReactOS system libraries
 4 * FILE:        lib/sdk/crt/mbstring/mbstrlen.c
 5 * PURPOSE:      Determines the length of a multi byte string, current locale
 6 * PROGRAMERS:
 7 *              Copyright 1999 Alexandre Julliard
 8 *              Copyright 2000 Jon Griffths
 9 *
10 */
11
12#include <mbstring.h>
13#include <stdlib.h>
14
15#ifdef _LIBCNT_
16unsigned short *NlsLeadByteInfo;
17#define isleadbyte(c) NlsLeadByteInfo[c]
18#else
19int isleadbyte(int byte);
20#endif
21
22/*
23 * @implemented
24 */
25size_t __cdecl _mbstrlen( const char *str )
26{
27  size_t len = 0;
28  while(*str)
29  {
30    /* FIXME: According to the documentation we are supposed to test for
31     * multi-byte character validity. Whatever that means
32     */
33    str += isleadbyte((unsigned char)*str) ? 2 : 1;
34    len++;
35  }
36  return len;
37}