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|
/*
* POSIX library for Lua 5.1, 5.2, 5.3 & 5.4.
* Copyright (C) 2013-2025 Gary V. Vaughan
* Copyright (C) 2010-2013 Reuben Thomas <rrt@sc3d.org>
* Copyright (C) 2008-2010 Natanael Copa <natanael.copa@gmail.com>
* Clean up and bug fixes by Leo Razoumov <slonik.az@gmail.com> 2006-10-11
* Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> 07 Apr 2006 23:17:49
* Based on original by Claudio Terra for Lua 3.x.
* With contributions by Roberto Ierusalimschy.
* With documentation from Steve Donovan 2012
*/
/***
Control Terminal I/O.
Functions and constants for controlling terminal behaviour.
@module posix.termio
*/
#include <termios.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "lua.h"
#include "lauxlib.h"
#include "_helpers.c"
#if HAVE_TERMIOS_H
/***
Control characters.
The field names below are not strings, but index constants each
referring to a terminal control character.
@table ccs
@int VINTR interrupt control character
@int VQUIT quit control character
@int WERASE erase control character
@int VKILL kill control character
@int VEOF end-of-file control character
@int VEOL end-of-line control charactor
@int VEOL2 another end-of-line control charactor
@int VMIN 1
@int VTIME 0
@int VSTART xon/xoff start control character
@int VSTOP xon/xoff stop control character
@int VSUSP suspend control character
*/
/***
Terminal attributes.
The constants named below are all available in this submodule's namespace,
as long as they are supported by the underlying system.
@table termios
@int cflag bitwise OR of zero or more of
`CSIZE`, `CS5`, `CS6`, `CS7`, `CS8`, `CSTOPB`, `CREAD`, `PARENB`,
`PARODD`, `HUPCL`, `CLOCAL` and `CRTSCTS`
@int iflag input flags; bitwise OR of zero or more of `IGNBRK`, `BRKINT`,
`IGNPAR`, `PARMRK`, `INPCK`, `ISTRIP`, `INLCR`, `IGNCR`, `ICRNL`,
`IXON`, `IXOFF`, `IXANY`, and `IMAXBEL`
@int lflag local flags; bitwise OR of zero or more of `ISIG`, `ICANON`,
`ECHO`, `ECHOE`, `ECHOK', 'ECHONL`, `NOFLSH`, `IEXTEN` and `TOSTOP`
@int oflag output flags; bitwise OR of zero or more of `OPOST`, `ONLCR`,
`OXTABS`, `ONOEOT`, `OCRNL`, `ONOCR`, `ONLRET`, `OFILL`, `NLDLY`,
`TABDLY`, `CRDLY`, `FFDLY`, `BSDLY`, `VTDLY` and `OFDEL`
@tfield ccs cc array of terminal control characters
@int ispeed the input baud rate, one of `B0`, `B50`, `B75`, `B110`,
`B134`, `B150`, `B200`, `B300`, `B600`, `B1200`, `B1800`, `B2400`,
`B4800`, `B9600`, `B19200`, `B38400`, `B57600`, `B115200`,
@int ospeed the output baud rate (see ispeed for possible values)
*/
/***
Winsize record.
Any fields not available in the underlying system will be `nil` valued.
@table PosixWinsize
@int ws_row rows, in characters
@int ws_col columns, in characters
@int ws_xpixel width, in pixels
@int ws_ypixel height, in pixels
*/
static int
pushwinsize(lua_State *L, struct winsize *ws)
{
if(!ws)
return lua_pushnil(L), 1;
lua_createtable(L, 0, 2);
setintegerfield(ws, ws_row);
setintegerfield(ws, ws_col);
#if HAVE_WS_XPIXEL && HAVE_WS_YPIXEL
setintegerfield(ws, ws_xpixel);
setintegerfield(ws, ws_ypixel);
#endif
settypemetatable("PosixWinsize");
return 1;
}
static const char *Swinsize_fields[] = {
"ws_row", "ws_col", "ws_xpixel", "ws_ypixel"
};
static void
towinsize(lua_State *L, int index, struct winsize *ws)
{
static const struct winsize nullws;
*ws = nullws;
luaL_checktype(L, index, LUA_TTABLE);
ws->ws_row = optintfield(L, index, "ws_row", 0);
ws->ws_col = optintfield(L, index, "ws_col", 0);
#if HAVE_WS_XPIXEL && HAVE_WS_YPIXEL
ws->ws_xpixel = optintfield(L, index, "ws_xpixel", 0);
ws->ws_ypixel = optintfield(L, index, "ws_ypixel", 0);
#endif
checkfieldnames(L, index, Swinsize_fields);
}
/***
Wait for all written output to reach the terminal.
@function tcdrain
@int fd terminal descriptor to act on
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcdrain(3)
*/
static int
Ptcdrain(lua_State *L)
{
int fd = checkint(L, 1);
checknargs(L, 1);
return pushresult(L, tcdrain(fd), NULL);
}
/***
Suspend transmission or receipt of data.
@function tcflow
@int fd terminal descriptor to act on
@int action one of `TCOOFF`, `TCOON`, `TCIOFF` or `TCION`
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcflow(3)
*/
static int
Ptcflow(lua_State *L)
{
int fd = checkint(L, 1);
int action = checkint(L, 2);
checknargs(L, 2);
return pushresult(L, tcflow(fd, action), NULL);
}
/***
Discard any data already written but not yet sent to the terminal.
@function tcflush
@int fd terminal descriptor to act on
@int action one of `TCIFLUSH`, `TCOFLUSH`, `TCIOFLUSH`
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcflush(3)
*/
static int
Ptcflush(lua_State *L)
{
int fd = checkint(L, 1);
int qs = checkint(L, 2);
checknargs(L, 2);
return pushresult(L, tcflush(fd, qs), NULL);
}
/***
Get termios state.
@function tcgetattr
@int fd terminal descriptor
@treturn[1] termios terminal attributes, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@return error message if failed
@see tcgetattr(3)
@usage
local termios, errmsg = tcgetattr (fd)
*/
static int
Ptcgetattr(lua_State *L)
{
int r, i;
struct termios t;
int fd = checkint(L, 1);
checknargs(L, 1);
r = tcgetattr(fd, &t);
if (r == -1) return pusherror(L, NULL);
lua_newtable(L);
pushintegerfield("iflag", t.c_iflag);
pushintegerfield("oflag", t.c_oflag);
pushintegerfield("lflag", t.c_lflag);
pushintegerfield("cflag", t.c_cflag);
pushintegerfield("ispeed",cfgetispeed(&t));
pushintegerfield("ospeed",cfgetospeed(&t));
lua_newtable(L);
for (i=0; i<NCCS; i++)
{
lua_pushinteger(L, i);
lua_pushinteger(L, t.c_cc[i]);
lua_settable(L, -3);
}
lua_setfield(L, -2, "cc");
return 1;
}
/***
Send a stream of zero valued bits.
@function tcsendbreak
@int fd terminal descriptor
@int duration if non-zero, stream for some implementation defined time
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcsendbreak(3)
*/
static int
Ptcsendbreak(lua_State *L)
{
int fd = checkint(L, 1);
int duration = checkint(L, 2);
checknargs(L, 2);
return pushresult(L, tcsendbreak(fd, duration), NULL);
}
/***
Set termios state.
@function tcsetattr
@int fd terminal descriptor to act on
@int actions bitwise OR of one or more of `TCSANOW`, `TCSADRAIN`,
`TCSAFLUSH` and `TSASOFT`
@tparam termios a table with fields from iflag, oflag, cflag, lflag and cc,
each formed by `bor` operations with various posix constants
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcsetattr(3)
@usage
local termio = require "posix.termio"
ok, errmsg = tcsetattr (fd, 0, { cc = { [termio.VTIME] = 0, [termio.VMIN] = 1 })
*/
static int
Ptcsetattr(lua_State *L)
{
struct termios t;
int i;
int fd = checkint(L, 1);
int act = checkint(L, 2);
luaL_checktype(L, 3, LUA_TTABLE);
checknargs(L, 3);
lua_getfield(L, 3, "iflag"); t.c_iflag = optint(L, -1, 0); lua_pop(L, 1);
lua_getfield(L, 3, "oflag"); t.c_oflag = optint(L, -1, 0); lua_pop(L, 1);
lua_getfield(L, 3, "cflag"); t.c_cflag = optint(L, -1, 0); lua_pop(L, 1);
lua_getfield(L, 3, "lflag"); t.c_lflag = optint(L, -1, 0); lua_pop(L, 1);
lua_getfield(L, 3, "ispeed"); cfsetispeed( &t, optint(L, -1, B0) ); lua_pop(L, 1);
lua_getfield(L, 3, "ospeed"); cfsetospeed( &t, optint(L, -1, B0) ); lua_pop(L, 1);
lua_getfield(L, 3, "cc");
for (i=0; i<NCCS; i++)
{
lua_pushinteger(L, i);
lua_gettable(L, -2);
t.c_cc[i] = optint(L, -1, 0);
lua_pop(L, 1);
}
return pushresult(L, tcsetattr(fd, act, &t), NULL);
}
# ifdef TIOCGWINSZ
/***
Get terminal window size.
@function tcgetwinsize
@int fd terminal descriptor to act on
@treturn[1] PosixWinsize winsize current winsize for *fd*, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcgetwinsize(3)
@usage
local termio = require "posix.termio"
local ws, errmsg, errnum = termio.tcgetwinsize(fd)
if ws then
print("rows=", ws.row, "cols=", ws.col, "xpixel=", ws.xpixel, "ypixel=", ws.ypixel)
else
print("Error: ", errmsg, errnum)
end
*/
static int
Ptcgetwinsize(lua_State *L)
{
int fd = checkint(L, 1);
struct winsize ws;
checknargs(L, 1);
if (ioctl(fd, TIOCGWINSZ, &ws) == -1)
return pusherror(L, NULL);
return pushwinsize(L, &ws);
}
# endif
# ifdef TIOCSWINSZ
/***
Set terminal window size.
@function tcsetwinsize
@int fd terminal descriptor to act on
@tparam PosixWinsize winsize to apply to *fd*
@treturn[1] int `0`, if successful
@return[2] nil
@treturn[2] string error message
@treturn[2] int errnum
@see tcsetwinsize(3)
@usage
local termio = require "posix.termio"
local ok, errmsg, errnum = termio.tcsetwinsize(fd, {row=24, col=80})
if not ok then
print("Error: ", errmsg, errnum)
end
*/
static int
Ptcsetwinsize(lua_State *L)
{
int fd = checkint(L, 1);
struct winsize ws;
towinsize(L, 2, &ws);
checknargs(L, 2);
return pushresult(L, ioctl(fd, TIOCSWINSZ, &ws), NULL);
}
# endif
#endif /*!HAVE_TERMIOS_H*/
static const luaL_Reg posix_termio_fns[] =
{
#if HAVE_TERMIOS_H
LPOSIX_FUNC( Ptcdrain ),
LPOSIX_FUNC( Ptcflow ),
LPOSIX_FUNC( Ptcflush ),
LPOSIX_FUNC( Ptcgetattr ),
LPOSIX_FUNC( Ptcsendbreak ),
LPOSIX_FUNC( Ptcsetattr ),
# ifdef TIOCGWINSZ
LPOSIX_FUNC( Ptcgetwinsize ),
# endif
# ifdef TIOCSWINSZ
LPOSIX_FUNC( Ptcsetwinsize ),
# endif
#endif /*!HAVE_TERMIOS_H*/
{NULL, NULL}
};
LUALIB_API int
luaopen_posix_termio(lua_State *L)
{
luaL_newlib(L, posix_termio_fns);
lua_pushstring(L, LPOSIX_VERSION_STRING("termio"));
lua_setfield(L, -2, "version");
#if HAVE_TERMIOS_H
/* tcsetattr */
LPOSIX_CONST( TCSANOW );
LPOSIX_CONST( TCSADRAIN );
LPOSIX_CONST( TCSAFLUSH );
/* tcflush */
LPOSIX_CONST( TCIFLUSH );
LPOSIX_CONST( TCOFLUSH );
LPOSIX_CONST( TCIOFLUSH );
/* tcflow() */
LPOSIX_CONST( TCOOFF );
LPOSIX_CONST( TCOON );
LPOSIX_CONST( TCIOFF );
LPOSIX_CONST( TCION );
/* cflag */
# ifdef B0
LPOSIX_CONST( B0 );
# endif
# ifdef B50
LPOSIX_CONST( B50 );
# endif
# ifdef B75
LPOSIX_CONST( B75 );
# endif
# ifdef B110
LPOSIX_CONST( B110 );
# endif
# ifdef B134
LPOSIX_CONST( B134 );
# endif
# ifdef B150
LPOSIX_CONST( B150 );
# endif
# ifdef B200
LPOSIX_CONST( B200 );
# endif
# ifdef B300
LPOSIX_CONST( B300 );
# endif
# ifdef B600
LPOSIX_CONST( B600 );
# endif
# ifdef B1200
LPOSIX_CONST( B1200 );
# endif
# ifdef B1800
LPOSIX_CONST( B1800 );
# endif
# ifdef B2400
LPOSIX_CONST( B2400 );
# endif
# ifdef B4800
LPOSIX_CONST( B4800 );
# endif
# ifdef B9600
LPOSIX_CONST( B9600 );
# endif
# ifdef B19200
LPOSIX_CONST( B19200 );
# endif
# ifdef B38400
LPOSIX_CONST( B38400 );
# endif
# ifdef B57600
LPOSIX_CONST( B57600 );
# endif
# ifdef B115200
LPOSIX_CONST( B115200 );
# endif
# ifdef CSIZE
LPOSIX_CONST( CSIZE );
# endif
# ifdef BS5
LPOSIX_CONST( CS5 );
# endif
# ifdef CS6
LPOSIX_CONST( CS6 );
# endif
# ifdef CS7
LPOSIX_CONST( CS7 );
# endif
# ifdef CS8
LPOSIX_CONST( CS8 );
# endif
# ifdef CSTOPB
LPOSIX_CONST( CSTOPB );
# endif
# ifdef CREAD
LPOSIX_CONST( CREAD );
# endif
# ifdef PARENB
LPOSIX_CONST( PARENB );
# endif
# ifdef PARODD
LPOSIX_CONST( PARODD );
# endif
# ifdef HUPCL
LPOSIX_CONST( HUPCL );
# endif
# ifdef CLOCAL
LPOSIX_CONST( CLOCAL );
# endif
# ifdef CRTSCTS
LPOSIX_CONST( CRTSCTS );
# endif
/* lflag */
# ifdef ISIG
LPOSIX_CONST( ISIG );
# endif
# ifdef ICANON
LPOSIX_CONST( ICANON );
# endif
# ifdef ECHO
LPOSIX_CONST( ECHO );
# endif
# ifdef ECHOE
LPOSIX_CONST( ECHOE );
# endif
# ifdef ECHOK
LPOSIX_CONST( ECHOK );
# endif
# ifdef ECHONL
LPOSIX_CONST( ECHONL );
# endif
# ifdef NOFLSH
LPOSIX_CONST( NOFLSH );
# endif
# ifdef IEXTEN
LPOSIX_CONST( IEXTEN );
# endif
# ifdef TOSTOP
LPOSIX_CONST( TOSTOP );
# endif
/* iflag */
# ifdef INPCK
LPOSIX_CONST( INPCK );
# endif
# ifdef IGNPAR
LPOSIX_CONST( IGNPAR );
# endif
# ifdef PARMRK
LPOSIX_CONST( PARMRK );
# endif
# ifdef ISTRIP
LPOSIX_CONST( ISTRIP );
# endif
# ifdef IXON
LPOSIX_CONST( IXON );
# endif
# ifdef IXOFF
LPOSIX_CONST( IXOFF );
# endif
# ifdef IXANY
LPOSIX_CONST( IXANY );
# endif
# ifdef IGNBRK
LPOSIX_CONST( IGNBRK );
# endif
# ifdef BRKINT
LPOSIX_CONST( BRKINT );
# endif
# ifdef INLCR
LPOSIX_CONST( INLCR );
# endif
# ifdef IGNCR
LPOSIX_CONST( IGNCR );
# endif
# ifdef ICRNL
LPOSIX_CONST( ICRNL );
# endif
# ifdef IMAXBEL
LPOSIX_CONST( IMAXBEL );
# endif
/* oflag */
# ifdef OPOST
LPOSIX_CONST( OPOST );
# endif
# ifdef ONLCR
LPOSIX_CONST( ONLCR );
# endif
# ifdef OCRNL
LPOSIX_CONST( OCRNL );
# endif
# ifdef ONLRET
LPOSIX_CONST( ONLRET );
# endif
# ifdef OFILL
LPOSIX_CONST( OFILL );
# endif
# ifdef OFDEL
LPOSIX_CONST( OFDEL );
# endif
# ifdef NLDLY
LPOSIX_CONST( NLDLY );
# endif
# ifdef NL0
LPOSIX_CONST( NL0 );
# endif
# ifdef NL1
LPOSIX_CONST( NL1 );
# endif
# ifdef CRDLY
LPOSIX_CONST( CRDLY );
# endif
# ifdef CR0
LPOSIX_CONST( CR0 );
# endif
# ifdef CR1
LPOSIX_CONST( CR1 );
# endif
# ifdef CR2
LPOSIX_CONST( CR2 );
# endif
# ifdef CR3
LPOSIX_CONST( CR3 );
# endif
# ifdef TABDLY
LPOSIX_CONST( TABDLY );
# endif
# ifdef TAB0
LPOSIX_CONST( TAB0 );
# endif
# ifdef TAB1
LPOSIX_CONST( TAB1 );
# endif
# ifdef TAB2
LPOSIX_CONST( TAB2 );
# endif
# ifdef TAB3
LPOSIX_CONST( TAB3 );
# endif
# ifdef BSDLY
LPOSIX_CONST( BSDLY );
# endif
# ifdef BS0
LPOSIX_CONST( BS0 );
# endif
# ifdef BS1
LPOSIX_CONST( BS1 );
# endif
# ifdef VTDLY
LPOSIX_CONST( VTDLY );
# endif
# ifdef VT0
LPOSIX_CONST( VT0 );
# endif
# ifdef VT1
LPOSIX_CONST( VT1 );
# endif
# ifdef FFDLY
LPOSIX_CONST( FFDLY );
# endif
# ifdef FF0
LPOSIX_CONST( FF0 );
# endif
# ifdef FF1
LPOSIX_CONST( FF1 );
# endif
/* cc */
# ifdef VINTR
LPOSIX_CONST( VINTR );
# endif
# ifdef VQUIT
LPOSIX_CONST( VQUIT );
# endif
# ifdef VERASE
LPOSIX_CONST( VERASE );
# endif
# ifdef VKILL
LPOSIX_CONST( VKILL );
# endif
# ifdef VEOF
LPOSIX_CONST( VEOF );
# endif
# ifdef VEOL
LPOSIX_CONST( VEOL );
# endif
# ifdef VEOL2
LPOSIX_CONST( VEOL2 );
# endif
# ifdef VMIN
LPOSIX_CONST( VMIN );
# endif
# ifdef VTIME
LPOSIX_CONST( VTIME );
# endif
# ifdef VSTART
LPOSIX_CONST( VSTART );
# endif
# ifdef VSTOP
LPOSIX_CONST( VSTOP );
# endif
# ifdef VSUSP
LPOSIX_CONST( VSUSP );
# endif
/* XSI extensions - don't use these if you care about portability
* to strict POSIX conforming machines, such as Mac OS X.
*/
# ifdef CBAUD
LPOSIX_CONST( CBAUD );
# endif
# ifdef EXTA
LPOSIX_CONST( EXTA );
# endif
# ifdef EXTB
LPOSIX_CONST( EXTB );
# endif
# ifdef DEFECHO
LPOSIX_CONST( DEFECHO );
# endif
# ifdef ECHOCTL
LPOSIX_CONST( ECHOCTL );
# endif
# ifdef ECHOPRT
LPOSIX_CONST( ECHOPRT );
# endif
# ifdef ECHOKE
LPOSIX_CONST( ECHOKE );
# endif
# ifdef FLUSHO
LPOSIX_CONST( FLUSHO );
# endif
# ifdef IUTF8
LPOSIX_CONST( IUTF8 );
# endif
# ifdef PENDIN
LPOSIX_CONST( PENDIN );
# endif
# ifdef LOBLK
LPOSIX_CONST( LOBLK );
# endif
# ifdef SWTCH
LPOSIX_CONST( SWTCH );
# endif
# ifdef VDISCARD
LPOSIX_CONST( VDISCARD );
# endif
# ifdef VDSUSP
LPOSIX_CONST( VDSUSP );
# endif
# ifdef VLNEXT
LPOSIX_CONST( VLNEXT );
# endif
# ifdef VREPRINT
LPOSIX_CONST( VREPRINT );
# endif
# ifdef VSTATUS
LPOSIX_CONST( VSTATUS );
# endif
# ifdef VWERASE
LPOSIX_CONST( VWERASE );
# endif
#endif /*!HAVE_TERMIOS_H*/
return 1;
}
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