1 /* $NetBSD: help.c,v 1.5 2003/08/07 09:37:05 agc 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)help.c 8.1 (Berkeley) 6/11/93"; 39 #else 40 __RCSID("$NetBSD: help.c,v 1.5 2003/08/07 09:37:05 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <curses.h> 45 #include <stdio.h> 46 47 #include "bog.h" 48 #include "extern.h" 49 50 extern int nlines; 51 int 52 help() 53 { 54 int eof, i; 55 FILE *fp; 56 WINDOW *win; 57 char buf[BUFSIZ]; 58 59 if ((fp = fopen(HELPFILE, "r")) == NULL) 60 return(-1); 61 win = newwin(0, 0, 0, 0); 62 clearok(win, 1); 63 64 eof = 0; 65 if (ungetc(getc(fp), fp) == EOF) { 66 wprintw(win, "There doesn't seem to be any help."); 67 eof = 1; /* Nothing there... */ 68 } 69 70 while (!eof) { 71 for (i = 0; i < nlines - 3; i++) { 72 if (fgets(buf, sizeof(buf), fp) == (char *) NULL) { 73 eof = 1; 74 break; 75 } 76 if (buf[0] == '.' && buf[1] == '\n') 77 break; 78 wprintw(win, "%s", buf); 79 } 80 if (eof || ungetc(getc(fp), fp) == EOF) { 81 eof = 1; 82 break; 83 } 84 wmove(win, nlines - 1, 0); 85 wprintw(win, 86 "Type <space> to continue, anything else to quit..."); 87 wrefresh(win); 88 if ((inputch() & 0177) != ' ') 89 break; 90 wclear(win); 91 } 92 93 fclose(fp); 94 if (eof) { 95 wmove(win, nlines - 1, 0); 96 wprintw(win, "Hit any key to continue..."); 97 wrefresh(win); 98 inputch(); 99 } 100 delwin(win); 101 clearok(stdscr, 1); 102 refresh(); 103 return(0); 104 } 105