ReactOS 0.4.15-dev-5672-gf73ac17
ismblead.c
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1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS system libraries
4 * FILE: lib/sdk/crt/mbstring/ismblead.c
5 * PURPOSE: Checks for a leading byte
6 * PROGRAMERS:
7 * Copyright 1999 Ariadne, Taiji Yamada
8 * Copyright 1999 Alexandre Julliard
9 * Copyright 2000 Jon Griffths
10 * Copyright 2008 Samuel Serapion adapted from PROJECT C Library
11 *
12 */
13
14#include <precomp.h>
15#include <mbctype.h>
16
17/*
18 * @implemented
19 */
20int _ismbblead(unsigned int c)
21{
22 return (get_mbcinfo()->mbctype[(c&0xff) + 1] & _M1) != 0;
23}
24
25/*
26 * @implemented
27 */
28int _ismbslead( const unsigned char *start, const unsigned char *str)
29{
30 int lead = 0;
31
32 /* Lead bytes can also be trail bytes so we need to analyse the string
33 */
34 while (start <= str)
35 {
36 if (!*start)
37 return 0;
38 lead = !lead && _ismbblead(*start);
39 start++;
40 }
41
42 return lead ? -1 : 0;
43}
44
45/*
46 * @implemented
47 */
48unsigned char *__p__mbctype(void)
49{
50 return get_mbcinfo()->mbctype;
51}
52
53
GLuint start
Definition: gl.h:1545
const GLubyte * c
Definition: glext.h:8905
int _ismbblead(unsigned int c)
Definition: ismblead.c:20
unsigned char * __p__mbctype(void)
Definition: ismblead.c:48
int _ismbslead(const unsigned char *start, const unsigned char *str)
Definition: ismblead.c:28
MSVCRT_pthreadmbcinfo get_mbcinfo(void)
Definition: locale.c:364
#define _M1
Definition: msvcrt.h:817
const WCHAR * str
unsigned char mbctype[257]
Definition: msvcrt.h:143