59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* appendstr.c -- append to a dynamically allocated string
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Copyright (C) 1994 Markus Armbruster
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Library Public License
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as published by the Free Software Foundation; either version 2, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file docs/COPYING.LIB. If not, write
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to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
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02139, USA. */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include <stdarg.h>
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#include <string.h>
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#include "xalloc.h"
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#include "manconfig.h"
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#include "appendstr.h"
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/* append strings to first argument, which is realloced to the correct size
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first arg may be NULL */
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char *appendstr (char *str, ...)
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{
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va_list ap;
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size_t len, newlen;
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char *next, *end;
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len = str ? strlen (str) : 0;
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va_start (ap, str);
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newlen = len + 1;
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while ((next = va_arg (ap, char *)))
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newlen += strlen (next);
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va_end (ap);
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str = xrealloc (str, newlen);
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end = str + len;
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va_start (ap, str);
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while ((next = va_arg (ap, char *))) {
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strcpy (end, next);
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end += strlen (next);
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}
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va_end (ap);
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return str;
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}
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