/* Glibc termios struct and supporting bits
 *
 * For whatever reason, OSs/glibc don't have a shared interface for this.  Linux
 * has it's own (different) termios interface.  We'll just use glibc's interface
 * so that we can be interoperable/compatibile.
 *
 * This all is from sysdeps/ros/bits/termios.h.  Check that out for the original
 * CR statement.  I'm fairly certain you can't CR this sort of stuff.
 *
 * Differences include removing some ifdefs and things we'll never use.  You can
 * tell this is compatibility crap that I didn't write because it uses octal.
 * Bastages. */

#pragma once

typedef unsigned char   cc_t;
typedef unsigned int    speed_t;
typedef unsigned int    tcflag_t;

#define NCCS 32
struct termios
{
	tcflag_t c_iflag;			/* input mode flags */
	tcflag_t c_oflag;			/* output mode flags */
	tcflag_t c_cflag;			/* control mode flags */
	tcflag_t c_lflag;			/* local mode flags */
	cc_t c_line;				/* line discipline */
	cc_t c_cc[NCCS];			/* control characters */
	/* these last two might not be supported by all glibc builds.  search
	 * for _HAVE_STRUCT_TERMIOS_C_ISPEED and friends. */
	speed_t c_ispeed;			/* input speed */
	speed_t c_ospeed;			/* output speed */
};

/* c_cc characters */
#define VINTR 0
#define VQUIT 1
#define VERASE 2
#define VKILL 3
#define VEOF 4
#define VTIME 5
#define VMIN 6
#define VSWTC 7
#define VSTART 8
#define VSTOP 9
#define VSUSP 10
#define VEOL 11
#define VREPRINT 12
#define VDISCARD 13
#define VWERASE 14
#define VLNEXT 15
#define VEOL2 16

/* c_iflag bits */
#define IGNBRK	0000001
#define BRKINT	0000002
#define IGNPAR	0000004
#define PARMRK	0000010
#define INPCK	0000020
#define ISTRIP	0000040
#define INLCR	0000100
#define IGNCR	0000200
#define ICRNL	0000400
#define IUCLC	0001000
#define IXON	0002000
#define IXANY	0004000
#define IXOFF	0010000
#define IMAXBEL	0020000
#define IUTF8	0040000

/* c_oflag bits */
#define OPOST	0000001
#define OLCUC	0000002
#define ONLCR	0000004
#define OCRNL	0000010
#define ONOCR	0000020
#define ONLRET	0000040
#define OFILL	0000100
#define OFDEL	0000200
#define NLDLY	0000400
#define   NL0	0000000
#define   NL1	0000400
#define CRDLY	0003000
#define   CR0	0000000
#define   CR1	0001000
#define   CR2	0002000
#define   CR3	0003000
#define TABDLY	0014000
#define   TAB0	0000000
#define   TAB1	0004000
#define   TAB2	0010000
#define   TAB3	0014000
#define BSDLY	0020000
#define   BS0	0000000
#define   BS1	0020000
#define FFDLY	0100000
#define   FF0	0000000
#define   FF1	0100000

#define VTDLY	0040000
#define   VT0	0000000
#define   VT1	0040000

#define XTABS	0014000

/* c_cflag bit meaning */
#define CBAUD	0010017
#define  B0	0000000		/* hang up */
#define  B50	0000001
#define  B75	0000002
#define  B110	0000003
#define  B134	0000004
#define  B150	0000005
#define  B200	0000006
#define  B300	0000007
#define  B600	0000010
#define  B1200	0000011
#define  B1800	0000012
#define  B2400	0000013
#define  B4800	0000014
#define  B9600	0000015
#define  B19200	0000016
#define  B38400	0000017
#define EXTA B19200
#define EXTB B38400
#define CSIZE	0000060
#define   CS5	0000000
#define   CS6	0000020
#define   CS7	0000040
#define   CS8	0000060
#define CSTOPB	0000100
#define CREAD	0000200
#define PARENB	0000400
#define PARODD	0001000
#define HUPCL	0002000
#define CLOCAL	0004000
#define CBAUDEX 0010000
#define  B57600   0010001
#define  B115200  0010002
#define  B230400  0010003
#define  B460800  0010004
#define  B500000  0010005
#define  B576000  0010006
#define  B921600  0010007
#define  B1000000 0010010
#define  B1152000 0010011
#define  B1500000 0010012
#define  B2000000 0010013
#define  B2500000 0010014
#define  B3000000 0010015
#define  B3500000 0010016
#define  B4000000 0010017
#define __MAX_BAUD B4000000
#define CIBAUD	  002003600000		/* input baud rate (not used) */
#define CMSPAR   010000000000		/* mark or space (stick) parity */
#define CRTSCTS  020000000000		/* flow control */

/* c_lflag bits */
#define ISIG	0000001
#define ICANON	0000002
#define XCASE	0000004
#define ECHO	0000010
#define ECHOE	0000020
#define ECHOK	0000040
#define ECHONL	0000100
#define NOFLSH	0000200
#define TOSTOP	0000400
#define ECHOCTL 0001000
#define ECHOPRT 0002000
#define ECHOKE	 0004000
#define FLUSHO	 0010000
#define PENDIN	 0040000
#define IEXTEN	0100000

/* tcflow() and TCXONC use these */
#define	TCOOFF		0
#define	TCOON		1
#define	TCIOFF		2
#define	TCION		3

/* tcflush() and TCFLSH use these */
#define	TCIFLUSH	0
#define	TCOFLUSH	1
#define	TCIOFLUSH	2

/* tcsetattr uses these */
#define	TCSANOW		0
#define	TCSADRAIN	1
#define	TCSAFLUSH	2