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

   1
   2 /*
   3  * print_sw.c -- print switches
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11
  12
  13 void
  14 print_sw (const char *substr, const struct swit *swp, char *prefix, FILE *fp)
  15 {
  16     int len, optno;
  17     int i;
  18     char *cp, *cp1, *sp;
  19     char buf[128];
  20
  21     len = strlen(substr);
  22     for (; swp->sw; swp++) {
  23         /* null matches all strings */
  24         if (!*substr || (ssequal (substr, swp->sw) && len >= swp->minchars)) {
  25             optno = 0;
  26             /* next switch */
  27             if ((sp = (&swp[1])->sw)) {
  28                 if (!*substr && sp[0] == 'n' && sp[1] == 'o' &&
  29                         strcmp (&sp[2], swp->sw) == 0 && (
  30                         ((&swp[1])->minchars == 0 && swp->minchars == 0) ||
  31                         ((&swp[1])->minchars == (swp->minchars) + 2)))
  32                     optno++;
  33             }
  34
  35             if (swp->minchars > 0) {
  36                 cp = buf;
  37                 *cp++ = '(';
  38                 if (optno) {
  39                     strcpy (cp, "[no]");
  40                     cp += strlen (cp);
  41                 }
  42                 for (cp1 = swp->sw, i = 0; i < swp->minchars; i++)
  43                     *cp++ = *cp1++;
  44                 *cp++ = ')';
  45                 while ((*cp++ = *cp1++));
  46                 fprintf (fp, "  %s%s\n", prefix, buf);
  47             } else {
  48                 if (!swp->minchars)
  49                     fprintf(fp, optno ? "  %s[no]%s\n" : "  %s%s\n",
  50                             prefix, swp->sw);
  51             }
  52             if (optno)
  53                 swp++;  /* skip -noswitch */
  54         }
  55     }
  56 }