mbsncpy.c File Reference

#include <precomp.h>
#include <mbstring.h>

Include dependency graph for mbsncpy.c:

Go to the source code of this file.

Functions
unsigned char *CDECL	_mbsncpy (unsigned char *dst, const unsigned char *src, size_t n)
int CDECL	_mbsnbcpy_s (unsigned char *dst, size_t size, const unsigned char *src, size_t n)
unsigned char *CDECL	_mbsnbcpy (unsigned char *dst, const unsigned char *src, size_t n)

Function Documentation

_mbsnbcpy()

unsigned char *CDECL _mbsnbcpy	(	unsigned char *	dst,
		const unsigned char *	src,
		size_t	n
	)

Definition at line 130 of file mbsncpy.c.

{
  unsigned char* ret = dst;
  if(!n)
    return dst;
  if(get_mbcinfo()->ismbcodepage)
  {
    int is_lead = 0;
    while (*src && n)
    {
      is_lead = (!is_lead && _ismbblead(*src));
      n--;
      *dst++ = *src++;
    }
 
    if (is_lead) /* if string ends with a lead, remove it */
    *(dst - 1) = 0;
  }
  else
  {
    while (n)
    {
        n--;
        if (!(*dst++ = *src++)) break;
    }
  }
  while (n--) *dst++ = 0;
  return ret;
}

_mbsnbcpy_s()

int CDECL _mbsnbcpy_s	(	unsigned char *	dst,
		size_t	size,
		const unsigned char *	src,
		size_t	n
	)

Definition at line 65 of file mbsncpy.c.

{
    size_t pos = 0;
 
    if(!dst || size == 0)
        return EINVAL;
    if(!src)
    {
        dst[0] = '\0';
        return EINVAL;
    }
    if(!n)
        return 0;
 
    if(get_mbcinfo()->ismbcodepage)
    {
        int is_lead = 0;
        while (*src && n)
        {
            if(pos == size)
            {
                dst[0] = '\0';
                return ERANGE;
            }
            is_lead = (!is_lead && _ismbblead(*src));
            n--;
            dst[pos++] = *src++;
        }
 
        if (is_lead) /* if string ends with a lead, remove it */
            dst[pos - 1] = 0;
    }
    else
    {
        while (n)
        {
            n--;
            if(pos == size)
            {
                dst[0] = '\0';
                return ERANGE;
            }
 
            if(!(*src)) break;
            dst[pos++] = *src++;
        }
    }
 
    if(pos < size)
        dst[pos] = '\0';
    else
    {
        dst[0] = '\0';
        return ERANGE;
    }
 
    return 0;
}

_mbsncpy()

unsigned char *CDECL _mbsncpy	(	unsigned char *	dst,
		const unsigned char *	src,
		size_t	n
	)

Definition at line 22 of file mbsncpy.c.

{
  unsigned char* ret = dst;
  if(!n)
    return dst;
  if (get_mbcinfo()->ismbcodepage)
  {
    while (*src && n)
    {
      n--;
      if (_ismbblead(*src))
      {
        if (!*(src+1))
        {
            *dst++ = 0;
            *dst++ = 0;
            break;
        }
 
        *dst++ = *src++;
      }
 
      *dst++ = *src++;
    }
  }
  else
  {
    while (n)
    {
        n--;
        if (!(*dst++ = *src++)) break;
    }
  }
  while (n--) *dst++ = 0;
  return ret;
}