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

   1
   2 /*
   3  * getarguments.c -- Get the argument vector ready to go.
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13
  14 char **
  15 getarguments (char *invo_name, int argc, char **argv, int check_context)
  16 {
  17     char *cp, **ap, **bp, **arguments;
  18     int n = 0;
  19
  20     /*
  21      * Check if profile/context specifies any arguments
  22      */
  23     if (check_context && (cp = context_find (invo_name))) {
  24         cp = getcpy (cp);               /* make copy    */
  25         ap = brkstring (cp, " ", "\n"); /* split string */
  26
  27         /* Count number of arguments split */
  28         bp = ap;
  29         while (*bp++)
  30             n++;
  31     }
  32
  33     if (!(arguments = (char **) malloc ((argc + n) * sizeof(*arguments))))
  34         adios (NULL, "unable to malloc argument storage");
  35     bp = arguments;
  36
  37     /* Copy any arguments from profile/context */
  38     if (n > 0) {
  39         while (*ap)
  40             *bp++ = *ap++;
  41      }
  42
  43     /* Copy arguments from command line */
  44     argv++;
  45     while (*argv)
  46         *bp++ = *argv++;
  47
  48     /* Now NULL terminate the array */
  49     *bp = NULL;
  50
  51     return arguments;
  52 }