61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
/***
|
|
*strncpy.c - copy at most n characters of string
|
|
*
|
|
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* defines strncpy() - copy at most n characters of string
|
|
*
|
|
*Revision History:
|
|
* 05-31-89 JCR C version created.
|
|
* 02-27-90 GJF Fixed calling type, #include <cruntime.h>, fixed
|
|
* copyright.
|
|
* 10-02-90 GJF New-style function declarator.
|
|
* 09-02-93 GJF Replaced _CALLTYPE1 with __cdecl.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#include <cruntime.h>
|
|
#include <string.h>
|
|
|
|
/***
|
|
*char *strncpy(dest, source, count) - copy at most n characters
|
|
*
|
|
*Purpose:
|
|
* Copies count characters from the source string to the
|
|
* destination. If count is less than the length of source,
|
|
* NO NULL CHARACTER is put onto the end of the copied string.
|
|
* If count is greater than the length of sources, dest is padded
|
|
* with null characters to length count.
|
|
*
|
|
*
|
|
*Entry:
|
|
* char *dest - pointer to destination
|
|
* char *source - source string for copy
|
|
* unsigned count - max number of characters to copy
|
|
*
|
|
*Exit:
|
|
* returns dest
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
char * __cdecl strncpy (
|
|
char * dest,
|
|
const char * source,
|
|
size_t count
|
|
)
|
|
{
|
|
char *start = dest;
|
|
|
|
while (count && (*dest++ = *source++)) /* copy string */
|
|
count--;
|
|
|
|
if (count) /* pad out with zeroes */
|
|
while (--count)
|
|
*dest++ = '\0';
|
|
|
|
return(start);
|
|
}
|