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

   1
   2 /*
   3  * print_sw.c -- print switches
   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
  15 void
  16 print_sw (char *substr, struct swit *swp, char *prefix)
  17 {
  18     int len, optno;
  19     register int i;
  20     register char *cp, *cp1, *sp;
  21     char buf[128];
  22
  23     len = strlen(substr);
  24     for (; swp->sw; swp++) {
  25         /* null matches all strings */
  26         if (!*substr || (ssequal (substr, swp->sw) && len >= swp->minchars)) {
  27             optno = 0;
  28             /* next switch */
  29             if ((sp = (&swp[1])->sw)) {
  30                 if (!*substr && sp[0] == 'n' && sp[1] == 'o' &&
  31                         strcmp (&sp[2], swp->sw) == 0 && (
  32                         ((&swp[1])->minchars == 0 && swp->minchars == 0) ||
  33                         ((&swp[1])->minchars == (swp->minchars) + 2)))
  34                     optno++;
  35             }
  36
  37             if (swp->minchars > 0) {
  38                 cp = buf;
  39                 *cp++ = '(';
  40                 if (optno) {
  41                     strcpy (cp, "[no]");
  42                     cp += strlen (cp);
  43                 }
  44                 for (cp1 = swp->sw, i = 0; i < swp->minchars; i++)
  45                     *cp++ = *cp1++;
  46                 *cp++ = ')';
  47                 while ((*cp++ = *cp1++));
  48                 printf ("  %s%s\n", prefix, buf);
  49             } else {
  50                 if (!swp->minchars)
  51                     printf(optno ? "  %s[no]%s\n" : "  %s%s\n", prefix, swp->sw);
  52             }
  53             if (optno)
  54                 swp++;  /* skip -noswitch */
  55         }
  56     }
  57 }