1 /* $NetBSD: help.c,v 1.4 2001/02/05 00:27:35 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Barry Brachman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)help.c 8.1 (Berkeley) 6/11/93"; 43 #else 44 __RCSID("$NetBSD: help.c,v 1.4 2001/02/05 00:27:35 christos Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <curses.h> 49 #include <stdio.h> 50 51 #include "bog.h" 52 #include "extern.h" 53 54 extern int nlines; 55 int 56 help() 57 { 58 int eof, i; 59 FILE *fp; 60 WINDOW *win; 61 char buf[BUFSIZ]; 62 63 if ((fp = fopen(HELPFILE, "r")) == NULL) 64 return(-1); 65 win = newwin(0, 0, 0, 0); 66 clearok(win, 1); 67 68 eof = 0; 69 if (ungetc(getc(fp), fp) == EOF) { 70 wprintw(win, "There doesn't seem to be any help."); 71 eof = 1; /* Nothing there... */ 72 } 73 74 while (!eof) { 75 for (i = 0; i < nlines - 3; i++) { 76 if (fgets(buf, sizeof(buf), fp) == (char *) NULL) { 77 eof = 1; 78 break; 79 } 80 if (buf[0] == '.' && buf[1] == '\n') 81 break; 82 wprintw(win, "%s", buf); 83 } 84 if (eof || ungetc(getc(fp), fp) == EOF) { 85 eof = 1; 86 break; 87 } 88 wmove(win, nlines - 1, 0); 89 wprintw(win, 90 "Type <space> to continue, anything else to quit..."); 91 wrefresh(win); 92 if ((inputch() & 0177) != ' ') 93 break; 94 wclear(win); 95 } 96 97 fclose(fp); 98 if (eof) { 99 wmove(win, nlines - 1, 0); 100 wprintw(win, "Hit any key to continue..."); 101 wrefresh(win); 102 inputch(); 103 } 104 delwin(win); 105 clearok(stdscr, 1); 106 refresh(); 107 return(0); 108 } 109