release/picobsd/tinyware/help/help.c

   1 /*-
   2  * Copyright (c) 1998 Andrzej Bialecki
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $Id: help.c,v 1.1.1.1 1998/07/14 07:30:53 abial Exp $
  27  *
  28  */
  29
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <sys/types.h>
  34 #include <dirent.h>
  35
  36 void
  37 display(char *fname)
  38 {
  39         FILE *fd;
  40         DIR *dirp;
  41         struct dirent *d;
  42         char buf[100],junk[5],c, *dot;
  43         int i;
  44
  45         snprintf(buf,99,"/help/%s.hlp",fname);
  46         if((fd=fopen(buf,"r"))==NULL) {
  47                 printf("No help available for '%s'.\n",fname);
  48                 exit(1);
  49         }
  50         printf("\n");
  51         i=0;
  52         while(!feof(fd)) {
  53                 if(fgets(buf,99,fd)==NULL) continue;
  54                 if(i<23) {
  55                         printf("%s",buf);
  56                         i++;
  57                 } else {
  58                         printf("\e[7mPress Enter to continue\e[m");
  59                         fgets(junk,5,stdin);
  60                         printf("%s",buf);
  61                         i=0;
  62                 }
  63         }
  64         printf("\n");
  65         i=0;
  66         if(strcmp(fname,"help")==0) {
  67                 printf("The following help items are available:\n\n");
  68                 dirp=opendir("/help/.");
  69                 while((d=readdir(dirp))!=NULL) {
  70                         if(d->d_name[0]=='.') continue;
  71                         if((dot=strchr(d->d_name,'.'))!=NULL) {
  72                                 *dot='\0';
  73                         }
  74                         printf("%-13s",d->d_name);
  75                         i++;
  76                         if(i>5) {
  77                                 printf("\n");
  78                                 i=0;
  79                         }
  80                 }
  81                 closedir(dirp);
  82                 printf("\n");
  83         }
  84         return;
  85 }
  86
  87
  88 int
  89 main(int argc, char *argv[])
  90 {
  91         if(argc==1) {
  92                 display("help");
  93         } else {
  94                 display(argv[1]);
  95         }
  96         exit(0);
  97 }