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    Length: 1708 (0x6ac)
    Types: TextFile
    Names: »help.c«

└─⟦87ddcff64⟧ Bits:30001253 CPHDIST85 Tape, 1985 Autumn Conference Copenhagen
    └─ ⟦this⟧ »cph85dist/rman/daemon/help.c« 

TextFile

#ifndef lint
static char *RCSid = "$Header: help.c,v 1.3 85/07/16 11:08:41 broome Exp $";
#endif

/*
 * $Log:    help.c,v $
 * Revision 1.3  85/07/16  11:08:41  broome
 * Fixed to print error message when can't open help file.
 * 
 * Revision 1.2  85/07/06  16:55:53  broome
 * 
 * 
 * Revision 1.1  85/06/25  11:23:35  broome
 * Initial revision
 */

#include <stdio.h>
#include "response.h"

#ifndef HELPFILE
#define HELPFILE  "/usr/lib/mand.hf"
#endif

static FILE *hp = (FILE *) NULL;   /* help file pointer */

help (argc, argv)
int   argc;
char *argv[];
{
    char buf[80];
    int  slen, found = 0;
    char *subj;
    char *i, *index();
    
    if (argc == 1)      /* no args, use "mand" */
        subj = "mand";
    else
        subj = argv[1];
    slen = strlen (subj);

    if (hp == (FILE *) NULL)   /* haven't opened help file yet */
        if ((hp = fopen (HELPFILE, "r")) == (FILE *) NULL) {
            printf ("%d Cannot open help file (%s)\r\n", ERR_HLPFILE, HELPFILE);
            (void) fflush (stdout);
            return (ERR_HLPFILE);
        }

    fseek (hp, 0L, 0);                        /* go to top of file */
    while (fgets (buf, 80, hp)) {
        if (strncmp (buf, subj, slen))        /* subject doesn't match */
            continue;
        buf[strlen(buf)-1] = '\0';            /* zap the '\n' */
        if (i = index (buf, '\t'))            /* tabs separate name from info */
            printf ("%d-%s\r\n", INFO_HELP, ++i);
        found++;
    }

    if (found)
        printf ("%d End of HELP info for \"%s\"\r\n", INFO_HELP, subj);
    else 
        printf ("%d HELP topic \"%s\" unknown\r\n", ERR_NOHELP, subj);
    fflush (stdout);
    return (found != 0);
}