mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-14 19:57:17 +01:00
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
|
/* File : strxnmov.c
|
||
|
|
Author : Richard A. O'Keefe.
|
||
|
|
Updated: 2 June 1984
|
||
|
|
Defines: strxnmov()
|
||
|
|
|
||
|
|
strxnmov(dst, len, src1, ..., srcn, NullS)
|
||
|
|
moves the first len characters of the concatenation of src1,...,srcn
|
||
|
|
to dst. If there aren't that many characters, a NUL character will
|
||
|
|
be added to the end of dst to terminate it properly. This gives the
|
||
|
|
same effect as calling strxcpy(buff, src1, ..., srcn, NullS) with a
|
||
|
|
large enough buffer, and then calling strnmov(dst, buff, len).
|
||
|
|
It is just like strnmov except that it concatenates multiple sources.
|
||
|
|
Beware: the last argument should be the null character pointer.
|
||
|
|
Take VERY great care not to omit it! Also be careful to use NullS
|
||
|
|
and NOT to use 0, as on some machines 0 is not the same size as a
|
||
|
|
character pointer, or not the same bit pattern as NullS.
|
||
|
|
|
||
|
|
Note: strxnmov is like strnmov in that it moves up to len
|
||
|
|
characters; dst will be padded on the right with one NUL characters if
|
||
|
|
needed.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <my_global.h>
|
||
|
|
#include "m_string.h"
|
||
|
|
#include <stdarg.h>
|
||
|
|
|
||
|
|
char *strxnmov(char *dst, size_t len, const char *src, ...)
|
||
|
|
{
|
||
|
|
va_list pvar;
|
||
|
|
char *end_of_dst=dst+len;
|
||
|
|
|
||
|
|
va_start(pvar,src);
|
||
|
|
while (src != NullS)
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
if (dst == end_of_dst)
|
||
|
|
goto end;
|
||
|
|
}
|
||
|
|
while ((*dst++ = *src++));
|
||
|
|
dst--;
|
||
|
|
src = va_arg(pvar, char *);
|
||
|
|
}
|
||
|
|
*dst=0;
|
||
|
|
end:
|
||
|
|
va_end(pvar);
|
||
|
|
return dst;
|
||
|
|
}
|