diff options
Diffstat (limited to 'ncurses-5.3/ncurses/tinfo/lib_baudrate.c')
| -rw-r--r-- | ncurses-5.3/ncurses/tinfo/lib_baudrate.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/tinfo/lib_baudrate.c b/ncurses-5.3/ncurses/tinfo/lib_baudrate.c new file mode 100644 index 0000000..077b3b6 --- /dev/null +++ b/ncurses-5.3/ncurses/tinfo/lib_baudrate.c @@ -0,0 +1,222 @@ +/**************************************************************************** + * Copyright (c) 1998,2000,2002 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + +/* + * lib_baudrate.c + * + */ + +#include <curses.priv.h> +#include <term.h> /* cur_term, pad_char */ +#include <termcap.h> /* ospeed */ + +/* + * These systems use similar header files, which define B1200 as 1200, etc., + * but can be overridden by defining USE_OLD_TTY so B1200 is 9, which makes all + * of the indices up to B115200 fit nicely in a 'short', allowing us to retain + * ospeed's type for compatibility. + */ +#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) +#undef B0 +#undef B50 +#undef B75 +#undef B110 +#undef B134 +#undef B150 +#undef B200 +#undef B300 +#undef B600 +#undef B1200 +#undef B1800 +#undef B2400 +#undef B4800 +#undef B9600 +#undef B19200 +#undef EXTA +#undef B38400 +#undef EXTB +#undef B57600 +#undef B115200 +#undef B230400 +#undef B460800 +#undef B921600 +#define USE_OLD_TTY +#include <sys/ttydev.h> +#else +#undef USE_OLD_TTY +#endif /* USE_OLD_TTY */ + +MODULE_ID("$Id$") + +/* + * int + * baudrate() + * + * Returns the current terminal's baud rate. + * + */ + +struct speed { + int s; /* value for 'ospeed' is an index */ + int sp; /* the actual speed */ +}; + +static struct speed const speeds[] = +{ + {B0, 0}, + {B50, 50}, + {B75, 75}, + {B110, 110}, + {B134, 134}, + {B150, 150}, + {B200, 200}, + {B300, 300}, + {B600, 600}, + {B1200, 1200}, + {B1800, 1800}, + {B2400, 2400}, + {B4800, 4800}, + {B9600, 9600}, +#ifdef B19200 + {B19200, 19200}, +#else +#ifdef EXTA + {EXTA, 19200}, +#endif +#endif +#ifdef B38400 + {B38400, 38400}, +#else +#ifdef EXTB + {EXTB, 38400}, +#endif +#endif +#ifdef B57600 + {B57600, 57600}, +#endif +#ifdef B115200 + {B115200, 115200}, +#endif +#ifdef B230400 + {B230400, 230400}, +#endif +#ifdef B460800 + {B460800, 460800}, +#endif +#ifdef B921600 + {B921600, 921600}, +#endif +}; + +NCURSES_EXPORT(int) +_nc_baudrate(int OSpeed) +{ + static int last_OSpeed; + static int last_baudrate; + + int result; + unsigned i; + + if (OSpeed == last_OSpeed) { + result = last_baudrate; + } else { + result = ERR; + if (OSpeed >= 0) { + for (i = 0; i < SIZEOF(speeds); i++) { + if (speeds[i].s == OSpeed) { + result = speeds[i].sp; + break; + } + } + } + last_baudrate = result; + } + return (result); +} + +NCURSES_EXPORT(int) +_nc_ospeed(int BaudRate) +{ + int result = 1; + unsigned i; + + if (BaudRate >= 0) { + for (i = 0; i < SIZEOF(speeds); i++) { + if (speeds[i].sp == BaudRate) { + result = speeds[i].s; + break; + } + } + } + return (result); +} + +NCURSES_EXPORT(int) +baudrate(void) +{ + int result; + + T((T_CALLED("baudrate()"))); + + /* + * In debugging, allow the environment symbol to override when we're + * redirecting to a file, so we can construct repeatable test-cases + * that take into account costs that depend on baudrate. + */ +#ifdef TRACE + if (SP && !isatty(fileno(SP->_ofp)) + && getenv("BAUDRATE") != 0) { + int ret; + if ((ret = _nc_getenv_num("BAUDRATE")) <= 0) + ret = 9600; + ospeed = _nc_ospeed(ret); + returnCode(ret); + } +#endif + +#ifdef USE_OLD_TTY + result = cfgetospeed(&cur_term->Nttyb); + ospeed = _nc_ospeed(result); +#else /* !USE_OLD_TTY */ +#ifdef TERMIOS + ospeed = cfgetospeed(&cur_term->Nttyb); +#else + ospeed = cur_term->Nttyb.sg_ospeed; +#endif + result = _nc_baudrate(ospeed); +#endif + if (cur_term != 0) + cur_term->_baudrate = result; + + returnCode(result); +} |