git.marmaro.de Git - mmh/blob - sbr/print_sw.c

   1 /*
   2 ** print_sw.c -- print switches
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10
  11
  12 void
  13 print_sw(char *substr, struct swit *swp, char *prefix, FILE *fp)
  14 {
  15         int len, optno;
  16         register int i;
  17         register char *cp, *cp1, *sp;
  18         char buf[128];
  19
  20         len = strlen(substr);
  21         for (; swp->sw; swp++) {
  22                 /* null matches all strings */
  23                 if (!*substr || (strncmp(swp->sw, substr, len)==0 &&
  24                                 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 }