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Add ncurses 6.4
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Justine Tunney
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3071 changed files with 69379 additions and 1 deletions
317
third_party/ncurses/lib_baudrate.c
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317
third_party/ncurses/lib_baudrate.c
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/****************************************************************************
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* Copyright 2020 Thomas E. Dickey *
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* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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/*
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* lib_baudrate.c
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*
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*/
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#include "curses.priv.h"
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#include "termcap.h" /* ospeed */
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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#include <sys/param.h>
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#endif
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/*
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* These systems use similar header files, which define B1200 as 1200, etc.,
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* but can be overridden by defining USE_OLD_TTY so B1200 is 9, which makes all
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* of the indices up to B115200 fit nicely in a 'short', allowing us to retain
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* ospeed's type for compatibility.
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*/
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#if NCURSES_OSPEED_COMPAT && \
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((defined(__FreeBSD__) && (__FreeBSD_version < 700000)) || \
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defined(__NetBSD__) || \
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((defined(__OpenBSD__) && OpenBSD < 201510)) || \
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defined(__APPLE__))
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#undef B0
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#undef B50
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#undef B75
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#undef B110
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#undef B134
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#undef B150
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#undef B200
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#undef B300
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#undef B600
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#undef B1200
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#undef B1800
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#undef B2400
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#undef B4800
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#undef B9600
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#undef B19200
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#undef EXTA
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#undef B38400
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#undef EXTB
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#undef B57600
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#undef B115200
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#undef B230400
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#undef B460800
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#undef B921600
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#define USE_OLD_TTY
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#include <sys/ttydev.h>
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#else
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#undef USE_OLD_TTY
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#endif /* USE_OLD_TTY */
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MODULE_ID("$Id: lib_baudrate.c,v 1.45 2020/09/05 21:15:32 tom Exp $")
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/*
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* int
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* baudrate()
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*
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* Returns the current terminal's baud rate.
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*
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*/
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struct speed {
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int given_speed; /* values for 'ospeed' */
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int actual_speed; /* the actual speed */
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};
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#if !defined(EXP_WIN32_DRIVER)
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#define DATA(number) { B##number, number }
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static struct speed speeds[] =
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{
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DATA(0),
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DATA(50),
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DATA(75),
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DATA(110),
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DATA(134),
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DATA(150),
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DATA(200),
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DATA(300),
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DATA(600),
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DATA(1200),
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DATA(1800),
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DATA(2400),
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DATA(4800),
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DATA(9600),
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#ifdef B19200
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DATA(19200),
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#elif defined(EXTA)
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{EXTA, 19200},
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#endif
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#ifdef B28800
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DATA(28800),
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#endif
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#ifdef B38400
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DATA(38400),
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#elif defined(EXTB)
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{EXTB, 38400},
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#endif
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#ifdef B57600
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DATA(57600),
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#endif
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/* ifdef to prevent overflow when OLD_TTY is not available */
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#if !(NCURSES_OSPEED_COMPAT && defined(__FreeBSD__) && (__FreeBSD_version > 700000))
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#ifdef B76800
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DATA(76800),
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#endif
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#ifdef B115200
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DATA(115200),
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#endif
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#ifdef B153600
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DATA(153600),
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#endif
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#ifdef B230400
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DATA(230400),
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#endif
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#ifdef B307200
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DATA(307200),
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#endif
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#ifdef B460800
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DATA(460800),
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#endif
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#ifdef B500000
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DATA(500000),
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#endif
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#ifdef B576000
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DATA(576000),
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#endif
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#ifdef B921600
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DATA(921600),
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#endif
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#ifdef B1000000
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DATA(1000000),
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#endif
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#ifdef B1152000
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DATA(1152000),
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#endif
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#ifdef B1500000
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DATA(1500000),
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#endif
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#ifdef B2000000
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DATA(2000000),
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#endif
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#ifdef B2500000
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DATA(2500000),
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#endif
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#ifdef B3000000
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DATA(3000000),
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#endif
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#ifdef B3500000
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DATA(3500000),
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#endif
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#ifdef B4000000
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DATA(4000000),
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#endif
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#endif
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};
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#endif /* !EXP_WIN32_DRIVER */
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NCURSES_EXPORT(int)
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_nc_baudrate(int OSpeed)
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{
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#if defined(EXP_WIN32_DRIVER)
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/* On Windows this is a noop */
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(void) OSpeed;
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return (OK);
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#else
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#if !USE_REENTRANT
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static int last_OSpeed;
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static int last_baudrate;
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#endif
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int result = ERR;
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if (OSpeed < 0)
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OSpeed = (NCURSES_OSPEED) OSpeed;
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if (OSpeed < 0)
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OSpeed = (unsigned short) OSpeed;
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#if !USE_REENTRANT
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if (OSpeed == last_OSpeed) {
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result = last_baudrate;
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}
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#endif
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if (result == ERR) {
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if (OSpeed >= 0) {
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unsigned i;
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for (i = 0; i < SIZEOF(speeds); i++) {
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if (speeds[i].given_speed > OSpeed) {
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break;
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}
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if (speeds[i].given_speed == OSpeed) {
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result = speeds[i].actual_speed;
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break;
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}
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}
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}
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#if !USE_REENTRANT
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if (OSpeed != last_OSpeed) {
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last_OSpeed = OSpeed;
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last_baudrate = result;
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}
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#endif
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}
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return (result);
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#endif /* !EXP_WIN32_DRIVER */
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}
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NCURSES_EXPORT(int)
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_nc_ospeed(int BaudRate)
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{
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int result = 1;
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#if defined(EXP_WIN32_DRIVER)
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(void) BaudRate;
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#else
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if (BaudRate >= 0) {
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unsigned i;
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for (i = 0; i < SIZEOF(speeds); i++) {
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if (speeds[i].actual_speed == BaudRate) {
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result = speeds[i].given_speed;
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break;
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}
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}
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}
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#endif
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return (result);
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}
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NCURSES_EXPORT(int)
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NCURSES_SP_NAME(baudrate) (NCURSES_SP_DCL0)
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{
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int result;
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T((T_CALLED("baudrate(%p)"), (void *) SP_PARM));
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#if defined(EXP_WIN32_DRIVER)
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result = OK;
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#else
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/*
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* In debugging, allow the environment symbol to override when we're
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* redirecting to a file, so we can construct repeatable test-cases
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* that take into account costs that depend on baudrate.
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*/
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#ifdef TRACE
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if (IsValidTIScreen(SP_PARM)
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&& !NC_ISATTY(fileno((SP_PARM && SP_PARM->_ofp) ? SP_PARM->_ofp : stdout))
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&& getenv("BAUDRATE") != 0) {
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int ret;
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if ((ret = _nc_getenv_num("BAUDRATE")) <= 0)
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ret = 9600;
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ospeed = (NCURSES_OSPEED) _nc_ospeed(ret);
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returnCode(ret);
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}
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#endif
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if (IsValidTIScreen(SP_PARM)) {
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#ifdef USE_OLD_TTY
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result = (int) cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
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ospeed = (NCURSES_OSPEED) _nc_ospeed(result);
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#else /* !USE_OLD_TTY */
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#ifdef TERMIOS
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ospeed = (NCURSES_OSPEED) cfgetospeed(&(TerminalOf(SP_PARM)->Nttyb));
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#else
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ospeed = (NCURSES_OSPEED) TerminalOf(SP_PARM)->Nttyb.sg_ospeed;
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#endif
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result = _nc_baudrate(ospeed);
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#endif
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TerminalOf(SP_PARM)->_baudrate = result;
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} else {
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result = ERR;
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}
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#endif /* !EXP_WIN32_DRIVER */
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returnCode(result);
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(int)
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baudrate(void)
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{
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return NCURSES_SP_NAME(baudrate) (CURRENT_SCREEN);
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}
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#endif
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