76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/*
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** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
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** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
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** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
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** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
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** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
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** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
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** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
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** FULL TEXT OF THE NON-WARRANTY PROVISIONS.
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**
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** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
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** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
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** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
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** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
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** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
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** THE UNITED STATES.
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**
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** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
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*/
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#include <sys/time.h>
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#include <sys/types.h>
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#include <termios.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "linutil.h"
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static int init_done=0;
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static struct termios save_termdata;
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static void reset_term() {
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if (tcsetattr(0, 0, &save_termdata)<0)
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fprintf(stderr, "Failed to reset termio data for stdin\n");
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}
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static void do_init() {
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struct termios termdata;
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if (tcgetattr(0, &termdata)<0) {
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fprintf(stderr, "Failed to get termio data for stdin\n");
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return;
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}
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save_termdata=termdata;
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cfmakeraw(&termdata);
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if (tcsetattr(0, 0, &termdata)<0) {
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fprintf(stderr, "Failed to set termio data for stdin\n");
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return;
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}
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atexit(reset_term);
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init_done=1;
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}
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int lin_kbhit() {
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fd_set set;
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struct timeval to;
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if (!init_done) do_init();
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FD_ZERO(&set);
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FD_SET(0, &set);
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to.tv_sec=0;
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to.tv_usec=0;
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if (select(1, &set, 0, 0, &to)<1) return 0;
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return 1;
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}
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char lin_getch() {
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char c;
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if (!init_done) do_init();
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if (read(0, &c, 1) != 1)
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return EOF;
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return c;
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}
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