1
by brian
clean slate |
1 |
/* Copyright (C) 2002 MySQL AB
|
2 |
|
|
3 |
This library is free software; you can redistribute it and/or
|
|
4 |
modify it under the terms of the GNU Library General Public
|
|
5 |
License as published by the Free Software Foundation; version 2
|
|
6 |
of the License.
|
|
7 |
|
|
8 |
This library is distributed in the hope that it will be useful,
|
|
9 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
10 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
11 |
Library General Public License for more details.
|
|
12 |
|
|
13 |
You should have received a copy of the GNU Library General Public
|
|
14 |
License along with this library; if not, write to the Free
|
|
15 |
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
16 |
MA 02111-1307, USA */
|
|
17 |
||
18 |
/* File : strxnmov.c
|
|
19 |
Author : Richard A. O'Keefe.
|
|
20 |
Updated: 2 June 1984
|
|
21 |
Defines: strxnmov()
|
|
22 |
||
23 |
strxnmov(dst, len, src1, ..., srcn, NullS)
|
|
24 |
moves the first len characters of the concatenation of src1,...,srcn
|
|
25 |
to dst and add a closing NUL character.
|
|
26 |
It is just like strnmov except that it concatenates multiple sources.
|
|
27 |
Beware: the last argument should be the null character pointer.
|
|
28 |
Take VERY great care not to omit it! Also be careful to use NullS
|
|
29 |
and NOT to use 0, as on some machines 0 is not the same size as a
|
|
30 |
character pointer, or not the same bit pattern as NullS.
|
|
31 |
||
32 |
NOTE
|
|
33 |
strxnmov is like strnmov in that it moves up to len
|
|
34 |
characters; dst will be padded on the right with one '\0' character.
|
|
35 |
if total-string-length >= length then dst[length] will be set to \0
|
|
36 |
*/
|
|
37 |
||
38 |
#include <my_global.h> |
|
39 |
#include "m_string.h" |
|
40 |
#include <stdarg.h> |
|
41 |
||
42 |
char *strxnmov(char *dst, size_t len, const char *src, ...) |
|
43 |
{
|
|
44 |
va_list pvar; |
|
45 |
char *end_of_dst=dst+len; |
|
46 |
||
47 |
va_start(pvar,src); |
|
48 |
while (src != NullS) |
|
49 |
{
|
|
50 |
do
|
|
51 |
{
|
|
52 |
if (dst == end_of_dst) |
|
53 |
goto end; |
|
54 |
}
|
|
55 |
while ((*dst++ = *src++)); |
|
56 |
dst--; |
|
57 |
src = va_arg(pvar, char *); |
|
58 |
}
|
|
59 |
end: |
|
60 |
*dst=0; |
|
61 |
va_end(pvar); |
|
62 |
return dst; |
|
63 |
}
|