1 files changed, 59 insertions, 0 deletions
diff --git a/lib/appendstr.c b/lib/appendstr.c
new file mode 100644
index 0000000..3be8bff
--- /dev/null
+++ b/lib/appendstr.c
@@ -0,0 +1,59 @@
+/* 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;
+}