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

   1 /* getarguments.c -- Get the argument vector ready to go.
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include "h/mh.h"
   9 #include "getarguments.h"
  10 #include "context_find.h"
  11 #include "brkstring.h"
  12 #include "h/utils.h"
  13
  14 char **
  15 getarguments (char *invo_name, int argc, char **argv, int check_context)
  16 {
  17     char *cp = NULL, **ap = NULL, **bp = NULL, **arguments = NULL;
  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 = mh_xstrdup(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     arguments = mh_xmalloc ((argc + n) * sizeof(*arguments));
  34     bp = arguments;
  35
  36     /* Copy any arguments from profile/context */
  37     if (ap != NULL && n > 0) {
  38         while (*ap)
  39             *bp++ = *ap++;
  40      }
  41
  42     /* Copy arguments from command line */
  43     argv++;
  44     while (*argv)
  45         *bp++ = *argv++;
  46
  47     /* Now NULL terminate the array */
  48     *bp = NULL;
  49
  50     return arguments;
  51 }