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

   1 /* help.c - print the usage line */
   2 #ifndef lint
   3 static char ident[] = "@(#)$Id: help.c,v 1.4 1994/04/21 19:56:24 jromine Exp $";
   4 #endif  /*  lint */
   5
   6 #include "../h/mh.h"
   7 #include <stdio.h>
   8
   9
  10 extern char *options[];
  11
  12
  13 void help (str, swp)
  14 register char  *str;
  15 register struct swit   *swp;
  16 {
  17     int     nameoutput,
  18             len,
  19             linepos,
  20             outputlinelen;
  21     register char  *cp,
  22                   **ap;
  23
  24     printf ("syntax: %s\n", str);
  25     printf ("  switches are:\n");
  26     printsw (ALL, swp, "-");
  27     if ((cp = m_find (invo_name)) != NULL)
  28         printf ("profile: %s\n", cp);
  29
  30     if (ssequal ("@(#)", cp = version))
  31         cp += 4;
  32     printf ("\nversion: %s\n", cp);
  33
  34     nameoutput = linepos = 0;
  35     outputlinelen = OUTPUTLINELEN;
  36     for (ap = options; *ap; ap++) {
  37         if (!nameoutput) {
  38             fprintf (stdout, "%s: ", cp = "options");
  39             linepos += (nameoutput = strlen (cp) + 2);
  40         }
  41         len = strlen (cp = *ap);
  42         if (linepos != nameoutput)
  43             if (len + linepos + 3 > outputlinelen)
  44                 fprintf (stdout, "\n%*s", linepos = nameoutput, "");
  45             else {
  46                 fputs (" ", stdout);
  47                 linepos++;
  48             }
  49         fprintf (stdout, "[%s]", cp);
  50         linepos += len + 2;
  51     }
  52
  53     if (linepos)
  54         (void) fputc ('\n', stdout);
  55 }