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#include "syshdrs.h"
#ifdef PRAGMA_HDRSTOP
# pragma hdrstop
#endif
const char gStrnLibVersion[] = "@(#) Strn 3.2.0";
/*
* Copy src to dst, truncating or null-padding to always copy n-1 bytes.
* Return dst.
*/
char *
Strncpy(char *const dst, const char *const src, const size_t n)
{
register char *d;
register const char *s;
register size_t i;
d = dst;
*d = 0;
if (n != 0) {
s = src;
/* If they specified a maximum of n characters, use n - 1 chars to
* hold the copy, and the last character in the array as a NUL.
* This is the difference between the regular strncpy routine.
* strncpy doesn't guarantee that your new string will have a
* NUL terminator, but this routine does.
*/
for (i=1; i<n; i++) {
if ((*d++ = *s++) == 0) {
#if (STRN_ZERO_PAD == 1)
/* Pad with zeros. */
for (; i<n; i++)
*d++ = 0;
#endif /* STRN_ZERO_PAD */
return dst;
}
}
/* If we get here, then we have a full string, with n - 1 characters,
* so now we NUL terminate it and go home.
*/
*d = 0;
}
return (dst);
} /* Strncpy */
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