1 /* $NetBSD: help.c,v 1.6 2005/07/01 16:38:24 jmc 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 1.6 2005/07/01 16:38:24 jmc 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 52 int 53 help(void) 54 { 55 int eof, i; 56 FILE *fp; 57 WINDOW *win; 58 char buf[BUFSIZ]; 59 60 if ((fp = fopen(HELPFILE, "r")) == NULL) 61 return(-1); 62 win = newwin(0, 0, 0, 0); 63 clearok(win, 1); 64 65 eof = 0; 66 if (ungetc(getc(fp), fp) == EOF) { 67 wprintw(win, "There doesn't seem to be any help."); 68 eof = 1; /* Nothing there... */ 69 } 70 71 while (!eof) { 72 for (i = 0; i < nlines - 3; i++) { 73 if (fgets(buf, sizeof(buf), fp) == (char *) NULL) { 74 eof = 1; 75 break; 76 } 77 if (buf[0] == '.' && buf[1] == '\n') 78 break; 79 wprintw(win, "%s", buf); 80 } 81 if (eof || ungetc(getc(fp), fp) == EOF) { 82 eof = 1; 83 break; 84 } 85 wmove(win, nlines - 1, 0); 86 wprintw(win, 87 "Type <space> to continue, anything else to quit..."); 88 wrefresh(win); 89 if ((inputch() & 0177) != ' ') 90 break; 91 wclear(win); 92 } 93 94 fclose(fp); 95 if (eof) { 96 wmove(win, nlines - 1, 0); 97 wprintw(win, "Hit any key to continue..."); 98 wrefresh(win); 99 inputch(); 100 } 101 delwin(win); 102 clearok(stdscr, 1); 103 refresh(); 104 return(0); 105 } 106