Update termios bindings (#3254)

Author: hovsater

lib/std/libc/os/darwin.c3

@@ -47,4 +47,226 @@ extern fn CInt sysctl(CInt *name, CUInt namelen, void *oldp, usz *oldlenp, void
 
 const SCHED_OTHER = 1;
 const SCHED_FIFO  = 4;
-const SCHED_RR    = 2;
+const SCHED_RR    = 2;
+
+module libc::termios @if(env::LIBC &&& env::DARWIN);
+
+bitstruct Tc_iflags : CULong
+{
+	bool ignbrk : 0;
+	bool brkint : 1;
+	bool ignpar : 2;
+	bool parmrk : 3;
+	bool inpck : 4;
+	bool istrip : 5;
+	bool inlcr : 6;
+	bool igncr : 7;
+	bool icrnl : 8;
+	bool ixon : 9;
+	bool ixoff : 10;
+	bool ixany : 11;
+	bool imaxbel : 13;
+	bool iutf8 : 14;
+}
+
+bitstruct Tc_oflags : CULong
+{
+	bool opost : 0;
+	bool onlcr : 1;
+	bool oxtabs : 2;
+	bool onoeot : 3;
+	bool ocrnl : 4;
+	bool onocr : 5;
+	bool onlret : 6;
+	bool ofill : 7;
+	T_nldly nldly : 8..9;
+	T_tabdly tabdly : 10..11;
+	T_crdly crdly : 12..13;
+	T_ffdly ffdly : 14..14;
+	T_bsdly bsdly : 15..15;
+	T_vtdly vtdly : 16..16;
+	bool ofdel : 17;
+}
+
+bitstruct Tc_cflags : CULong
+{
+	bool cignore : 0;
+	T_csize csize : 8..9;
+	bool cstopb : 10;
+	bool cread : 11;
+	bool parenb : 12;
+	bool parodd : 13;
+	bool hupcl : 14;
+	bool clocal : 15;
+	bool ccts_oflow : 16;
+	bool crts_iflow : 17;
+	bool cdtr_iflow : 18;
+	bool cdsr_oflow : 19;
+	bool ccar_oflow : 20;
+}
+
+bitstruct Tc_lflags : CULong
+{
+	bool echoke : 0;
+	bool echoe : 1;
+	bool echok : 2;
+	bool echo : 3;
+	bool echonl : 4;
+	bool echoprt : 5;
+	bool echoctl : 6;
+	bool isig : 7;
+	bool icanon : 8;
+	bool altwerase : 9;
+	bool iexten : 10;
+	bool extproc : 11;
+	bool tostop : 22;
+	bool flusho : 23;
+	bool nokerninfo : 25;
+	bool pendin : 29;
+	bool noflsh : 31;
+}
+
+constdef T_nldly : char
+{
+	NL0 = 0b00,
+	NL1 = 0b01,
+	NL2 = 0b10,
+	NL3 = 0b11,
+}
+
+constdef T_crdly : char
+{
+	CR0 = 0b00,
+	CR1 = 0b01,
+	CR2 = 0b10,
+	CR3 = 0b11,
+}
+
+constdef T_tabdly : char
+{
+	// Darwin's TAB3 is the OXTABS bit, exposed as Tc_oflags.oxtabs.
+	TAB0 = 0b00,
+	TAB1 = 0b01,
+	TAB2 = 0b10,
+}
+
+constdef T_bsdly : char
+{
+	BS0 = 0b0,
+	BS1 = 0b1,
+}
+
+constdef T_ffdly : char
+{
+	FF0 = 0b0,
+	FF1 = 0b1,
+}
+
+constdef T_vtdly : char
+{
+	VT0 = 0b0,
+	VT1 = 0b1,
+}
+
+constdef T_csize : char
+{
+	CS5 = 0b00,
+	CS6 = 0b01,
+	CS7 = 0b10,
+	CS8 = 0b11,
+}
+
+constdef Speed : CULong
+{
+	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,
+	B19200  = 19200,
+	B38400  = 38400,
+	B7200   = 7200,
+	B14400  = 14400,
+	B28800  = 28800,
+	B57600  = 57600,
+	B76800  = 76800,
+	B115200 = 115200,
+	B230400 = 230400,
+	EXTA    = B19200,
+	EXTB    = B38400,
+}
+
+constdef Control_Char : inline CInt
+{
+	VEOF     = 0,
+	VEOL     = 1,
+	VEOL2    = 2,
+	VERASE   = 3,
+	VWERASE  = 4,
+	VKILL    = 5,
+	VREPRINT = 6,
+	VINTR    = 8,
+	VQUIT    = 9,
+	VSUSP    = 10,
+	VDSUSP   = 11,
+	VSTART   = 12,
+	VSTOP    = 13,
+	VLNEXT   = 14,
+	VDISCARD = 15,
+	VMIN     = 16,
+	VTIME    = 17,
+	VSTATUS  = 18,
+}
+
+constdef Tcactions : CInt
+{
+	TCSANOW   = 0,
+	TCSADRAIN = 1,
+	TCSAFLUSH = 2,
+	TCSASOFT  = 0x10,
+	TCIFLUSH  = 1,
+	TCOFLUSH  = 2,
+	TCIOFLUSH = 3,
+	TCOOFF    = 1,
+	TCOON     = 2,
+	TCIOFF    = 3,
+	TCION     = 4,
+}
+
+extern fn CInt tcgetattr(Fd fd, Termios* self);
+extern fn CInt tcsetattr(Fd fd, Tcactions optional_actions, Termios* self);
+extern fn CInt tcsendbreak(Fd fd, CInt duration);
+extern fn CInt tcdrain(Fd fd);
+extern fn CInt tcflush(Fd fd, CInt queue_selector);
+extern fn CInt tcflow(Fd fd, CInt action);
+extern fn Speed cfgetospeed(Termios* self);
+extern fn Speed cfgetispeed(Termios* self);
+extern fn CInt cfsetospeed(Termios* self, Speed speed);
+extern fn CInt cfsetispeed(Termios* self, Speed speed);
+extern fn void cfmakeraw(Termios* self);
+extern fn CInt cfsetspeed(Termios* self, Speed speed);
+extern fn Pid_t tcgetsid(Fd fd);
+
+alias Cc = char;
+
+const CInt NCCS = 20;
+
+struct Termios
+{
+	Tc_iflags c_iflag;
+	Tc_oflags c_oflag;
+	Tc_cflags c_cflag;
+	Tc_lflags c_lflag;
+	Cc[NCCS] c_cc;
+	Speed c_ispeed;
+	Speed c_ospeed;
+}