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mbclen.c File Reference
#include <precomp.h>
#include <mbstring.h>
Include dependency graph for mbclen.c:

Go to the source code of this file.

Functions

size_t _mbclen (const unsigned char *s)
 
size_t _mbclen2 (const unsigned int s)
 
int mblen (const char *str, size_t size)
 
size_t __cdecl mbrlen (const char *str, size_t len, mbstate_t *state)
 

Function Documentation

◆ _mbclen()

size_t _mbclen ( const unsigned char s)

Definition at line 18 of file mbclen.c.

19 {
20  return _ismbblead(*s) ? 2 : 1;
21 }
GLdouble s
Definition: gl.h:2039
int __cdecl _ismbblead(unsigned int)
Definition: ismblead.c:20

◆ _mbclen2()

size_t _mbclen2 ( const unsigned int  s)

Definition at line 23 of file mbclen.c.

24 {
25  return (_ismbblead(s>>8) && _ismbbtrail(s&0x00FF)) ? 2 : 1;
26 }
_Check_return_ _CRTIMP int __cdecl _ismbbtrail(_In_ unsigned int _C)
GLdouble s
Definition: gl.h:2039
int __cdecl _ismbblead(unsigned int)
Definition: ismblead.c:20

Referenced by _mbsnbcat(), _mbsnbicmp(), _mbsnbset(), _mbsnicmp(), _mbsnset(), and _mbsset().

◆ mblen()

int mblen ( const char str,
size_t  size 
)

Definition at line 33 of file mbclen.c.

34 {
35  if (str && *str && size)
36  {
37  return !isleadbyte((unsigned char)*str) ? 1 : (size>1 ? 2 : -1);
38  }
39  return 0;
40 }
const WCHAR * str
GLsizeiptr size
Definition: glext.h:5919
#define isleadbyte(_c)
Definition: wchar.h:604

◆ mbrlen()

size_t __cdecl mbrlen ( const char str,
size_t  len,
mbstate_t state 
)

Definition at line 42 of file mbclen.c.

43 {
44  mbstate_t s = (state ? *state : 0);
45  size_t ret;
46 
47  if(!len || !str || !*str)
48  return 0;
49 
50  if(get_locinfo()->mb_cur_max == 1) {
51  return 1;
52  }else if(!s && isleadbyte((unsigned char)*str)) {
53  if(len == 1) {
54  s = (unsigned char)*str;
55  ret = -2;
56  }else {
57  ret = 2;
58  }
59  }else if(!s) {
60  ret = 1;
61  }else {
62  s = 0;
63  ret = 2;
64  }
65 
66  if(state)
67  *state = s;
68  return ret;
69 }
const WCHAR * str
unsigned char
Definition: typeof.h:29
#define get_locinfo()
Definition: winesup.h:25
int ret
#define isleadbyte(_c)
Definition: wchar.h:604
static int state
Definition: maze.c:121
GLenum GLsizei len
Definition: glext.h:6722
GLdouble s
Definition: gl.h:2039