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/* appendstr.c -- append to a dynamically allocated string
Copyright (C) 1994 Markus Armbruster
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Library Public License
as published by the Free Software Foundation; either version 2, 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; see the file docs/COPYING.LIB. If not, write
to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
02139, USA. */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <string.h>
#include <stdarg.h>
#include "xalloc.h"
#include "manconfig.h"
#include "appendstr.h"
/* append strings to first argument, which is realloced to the correct size
first arg may be NULL */
char *appendstr (char *str, ...)
{
va_list ap;
size_t len, newlen;
char *next, *end;
len = str ? strlen (str) : 0;
va_start (ap, str);
newlen = len + 1;
while ((next = va_arg (ap, char *)))
newlen += strlen (next);
va_end (ap);
str = xrealloc (str, newlen);
end = str + len;
va_start (ap, str);
while ((next = va_arg (ap, char *))) {
strcpy (end, next);
end += strlen (next);
}
va_end (ap);
return str;
}
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