diplodocus.org Git - nmh/blob - sbr/concat.c

   1
   2 /*
   3  * concat.c -- concatenate a variable number (minimum of 1)
   4  *             of strings in managed memory
   5  *
   6  * $Id$
   7  *
   8  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   9  * COPYRIGHT file in the root directory of the nmh distribution for
  10  * complete copyright information.
  11  */
  12
  13 #include <h/mh.h>
  14
  15
  16 char *
  17 concat (char *s1, ...)
  18 {
  19     char *cp, *dp, *sp;
  20     size_t len;
  21     va_list list;
  22
  23     len = strlen (s1) + 1;
  24     va_start(list, s1);
  25     while ((cp = va_arg(list, char *)))
  26         len += strlen (cp);
  27     va_end(list);
  28
  29     if (!(dp = sp = malloc(len)))
  30         adios (NULL, "unable to allocate string storage");
  31
  32     sp = copy(s1, sp);
  33
  34     va_start(list, s1);
  35     while ((cp = va_arg (list, char *)))
  36         sp = copy(cp, sp);
  37     va_end(list);
  38
  39     return dp;
  40 }