1 /* $NetBSD: help.c,v 1.2 1995/03/21 12:14:38 cgd 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 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)help.c 8.1 (Berkeley) 6/11/93"; 42 #else 43 static char rcsid[] = "$NetBSD: help.c,v 1.2 1995/03/21 12:14:38 cgd Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 #include <curses.h> 48 #include <stdio.h> 49 50 #include "bog.h" 51 #include "extern.h" 52 53 int 54 help() 55 { 56 extern int nlines; 57 int eof, i; 58 FILE *fp; 59 WINDOW *win; 60 char buf[BUFSIZ]; 61 62 if ((fp = fopen(HELPFILE, "r")) == NULL) 63 return(-1); 64 win = newwin(0, 0, 0, 0); 65 clearok(win, 1); 66 67 eof = 0; 68 if (ungetc(getc(fp), fp) == EOF) { 69 wprintw(win, "There doesn't seem to be any help."); 70 eof = 1; /* Nothing there... */ 71 } 72 73 while (!eof) { 74 for (i = 0; i < nlines - 3; i++) { 75 if (fgets(buf, sizeof(buf), fp) == (char *) NULL) { 76 eof = 1; 77 break; 78 } 79 if (buf[0] == '.' && buf[1] == '\n') 80 break; 81 wprintw(win, "%s", buf); 82 } 83 if (eof || ungetc(getc(fp), fp) == EOF) { 84 eof = 1; 85 break; 86 } 87 wmove(win, nlines - 1, 0); 88 wprintw(win, 89 "Type <space> to continue, anything else to quit..."); 90 wrefresh(win); 91 if ((inputch() & 0177) != ' ') 92 break; 93 wclear(win); 94 } 95 96 fclose(fp); 97 if (eof) { 98 wmove(win, nlines - 1, 0); 99 wprintw(win, "Hit any key to continue..."); 100 wrefresh(win); 101 inputch(); 102 } 103 delwin(win); 104 clearok(stdscr, 1); 105 refresh(); 106 return(0); 107 } 108