1 /* $OpenBSD: help.c,v 1.7 2016/01/10 14:10:38 mestre Exp $ */ 2 /* $NetBSD: help.c,v 1.2 1995/03/21 12:14:38 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Barry Brachman. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <curses.h> 37 38 #include "bog.h" 39 #include "extern.h" 40 41 int 42 help(void) 43 { 44 int eof, i; 45 FILE *fp; 46 WINDOW *win; 47 char buf[BUFSIZ]; 48 49 if ((fp = fopen(HELPFILE, "r")) == NULL) 50 return(-1); 51 win = newwin(0, 0, 0, 0); 52 clearok(win, TRUE); 53 54 eof = 0; 55 if (ungetc(getc(fp), fp) == EOF) { 56 wprintw(win, "There doesn't seem to be any help."); 57 eof = 1; /* Nothing there... */ 58 } 59 60 while (!eof) { 61 for (i = 0; i < nlines - 3; i++) { 62 if (fgets(buf, sizeof(buf), fp) == NULL) { 63 eof = 1; 64 break; 65 } 66 if (buf[0] == '.' && buf[1] == '\n') 67 break; 68 wprintw(win, "%s", buf); 69 } 70 if (eof || ungetc(getc(fp), fp) == EOF) { 71 eof = 1; 72 break; 73 } 74 wmove(win, nlines - 1, 0); 75 wprintw(win, 76 "Type <space> to continue, anything else to quit..."); 77 wrefresh(win); 78 if ((inputch() & 0177) != ' ') 79 break; 80 wclear(win); 81 } 82 83 fclose(fp); 84 if (eof) { 85 wmove(win, nlines - 1, 0); 86 wprintw(win, "Hit any key to continue..."); 87 wrefresh(win); 88 inputch(); 89 } 90 delwin(win); 91 clearok(stdscr, TRUE); 92 touchwin(stdscr); 93 refresh(); 94 return(0); 95 } 96