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