113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
RCSID("$Id: concat.c,v 1.1.1.2 2000/08/02 19:59:46 assar Exp $");
|
|
#endif
|
|
#include "roken.h"
|
|
|
|
int
|
|
roken_concat (char *s, size_t len, ...)
|
|
{
|
|
int ret;
|
|
va_list args;
|
|
|
|
va_start(args, len);
|
|
ret = roken_vconcat (s, len, args);
|
|
va_end(args);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
roken_vconcat (char *s, size_t len, va_list args)
|
|
{
|
|
const char *a;
|
|
|
|
while ((a = va_arg(args, const char*))) {
|
|
size_t n = strlen (a);
|
|
|
|
if (n >= len)
|
|
return -1;
|
|
memcpy (s, a, n);
|
|
s += n;
|
|
len -= n;
|
|
}
|
|
*s = '\0';
|
|
return 0;
|
|
}
|
|
|
|
size_t
|
|
roken_vmconcat (char **s, size_t max_len, va_list args)
|
|
{
|
|
const char *a;
|
|
char *p, *q;
|
|
size_t len = 0;
|
|
*s = NULL;
|
|
p = malloc(1);
|
|
if(p == NULL)
|
|
return 0;
|
|
len = 1;
|
|
while ((a = va_arg(args, const char*))) {
|
|
size_t n = strlen (a);
|
|
|
|
if(max_len && len + n > max_len){
|
|
free(p);
|
|
return 0;
|
|
}
|
|
q = realloc(p, len + n);
|
|
if(q == NULL){
|
|
free(p);
|
|
return 0;
|
|
}
|
|
p = q;
|
|
memcpy (p + len - 1, a, n);
|
|
len += n;
|
|
}
|
|
p[len - 1] = '\0';
|
|
*s = p;
|
|
return len;
|
|
}
|
|
|
|
size_t
|
|
roken_mconcat (char **s, size_t max_len, ...)
|
|
{
|
|
int ret;
|
|
va_list args;
|
|
|
|
va_start(args, max_len);
|
|
ret = roken_vmconcat (s, max_len, args);
|
|
va_end(args);
|
|
return ret;
|
|
}
|