1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* WallFire -- a comprehensive firewall administration tool.
*
* Copyright (C) 2001 Herv Eychenne <rv@wallfire.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
using namespace std;
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "string_printf.h"
string
string_vprintf(const char* fmt, va_list ap) {
int n, size = 128; /* Guess we need no more than 128 bytes. */
char *buf, *newbuf;
if ((buf = (char*)malloc(size)) == NULL)
return "";
while (1) {
/* Try to print in the allocated space. */
n = vsnprintf(buf, size, fmt, ap);
/* If that worked, print the string. */
if (n > -1 && n < size) {
string ret = buf;
free(buf);
return ret;
}
/* Else try again with more space. */
if (n > -1) /* glibc 2.1 */
size = n + 1; /* precisely what is needed */
else /* glibc 2.0 */
size *= 2; /* twice the old size */
if ((newbuf = (char*)realloc(buf, size)) == NULL) {
string ret = buf; /* return what we can */
free(buf);
return ret;
}
buf = newbuf;
}
}
string
string_printf(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
string str = string_vprintf(fmt, ap);
va_end(ap);
return str;
}
|
