diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/sbr/printsw.c

   1 /* printsw.c - print switches */
   2
   3 #include "../h/mh.h"
   4
   5
   6 void printsw (substr, swp, prefix)
   7 register char  *substr,
   8                *prefix;
   9 register struct swit   *swp;
  10 {
  11     int     len,
  12             optno;
  13     register int    i;
  14     register char  *cp,
  15                    *cp1,
  16                    *sp;
  17     char    buf[128];
  18
  19     len = strlen (substr);
  20     for (; swp -> sw; swp++) {
  21         if (!*substr ||         /* null matches all strings */
  22                 (ssequal (substr, swp -> sw) && len >= swp -> minchars)) {
  23             optno = 0;
  24             if (sp = (&swp[1]) -> sw) /* next switch */
  25                 if (!*substr && sp[0] == 'n' && sp[1] == 'o' &&
  26                         strcmp (&sp[2], swp -> sw) == 0 && (
  27                         ((&swp[1]) -> minchars == 0 && swp -> minchars == 0) ||
  28                         ((&swp[1]) -> minchars == (swp -> minchars) + 2)))
  29                     optno++;
  30             if (swp -> minchars > 0) {
  31                 cp = buf;
  32                 *cp++ = '(';
  33                 if (optno) {
  34                     (void) strcpy (cp, "[no]");
  35                     cp += strlen (cp);
  36                 }
  37                 for (cp1 = swp -> sw, i = 0; i < swp -> minchars; i++)
  38                     *cp++ = *cp1++;
  39                 *cp++ = ')';
  40                 while (*cp++ = *cp1++);
  41                 printf ("  %s%s\n", prefix, buf);
  42             }
  43             else
  44                 if (swp -> minchars == 0)
  45                     printf (optno ? "  %s[no]%s\n" : "  %s%s\n",
  46                             prefix, swp -> sw);
  47             if (optno)
  48                 swp++;  /* skip -noswitch */
  49         }
  50     }
  51 }