1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
#![allow(non_camel_case_types)]
#![no_std]

extern crate syscall;

use core::{mem, slice};
use core::ops::{Deref, DerefMut};

pub type tcflag_t = u32;
pub type cc_t = u8;

/* c_cc { */
pub const VEOF: usize = 0;
pub const VEOL: usize = 1;
pub const VEOL2: usize = 2;
pub const VERASE: usize = 3;
pub const VWERASE: usize = 4;
pub const VKILL: usize = 5;
pub const VREPRINT: usize = 6;
pub const VSWTC: usize = 7;
pub const VINTR: usize = 8;
pub const VQUIT: usize = 9;
pub const VSUSP: usize = 10;
pub const VSTART: usize = 12;
pub const VSTOP: usize = 13;
pub const VLNEXT: usize = 14;
pub const VDISCARD: usize = 15;
pub const VMIN: usize = 16;
pub const VTIME: usize = 17;
pub const NCCS: usize = 32;
/* } c_cc */

/* c_iflag { */
pub const IGNBRK: tcflag_t = 0o000001;
pub const BRKINT: tcflag_t = 0o000002;
pub const IGNPAR: tcflag_t = 0o000004;
pub const PARMRK: tcflag_t = 0o000010;
pub const INPCK: tcflag_t = 0o000020;
pub const ISTRIP: tcflag_t = 0o000040;
pub const INLCR: tcflag_t = 0o000100;
pub const IGNCR: tcflag_t = 0o000200;
pub const ICRNL: tcflag_t = 0o000400;
pub const IXON: tcflag_t = 0o001000;
pub const IXOFF: tcflag_t = 0o002000;
/* } c_iflag */

/* c_oflag { */
pub const OPOST: tcflag_t = 0o000001;
pub const ONLCR: tcflag_t = 0o000002;
pub const OLCUC: tcflag_t = 0o000004;

pub const OCRNL: tcflag_t = 0o000010;
pub const ONOCR: tcflag_t = 0o000020;
pub const ONLRET: tcflag_t = 0o000040;

pub const OFILL: tcflag_t = 0o0000100;
pub const OFDEL: tcflag_t = 0o0000200;
/* } c_oflag */

/* c_cflag { */
pub const  B0: tcflag_t = 0o000000;
pub const  B50: tcflag_t = 0o000001;
pub const  B75: tcflag_t = 0o000002;
pub const  B110: tcflag_t = 0o000003;
pub const  B134: tcflag_t = 0o000004;
pub const  B150: tcflag_t = 0o000005;
pub const  B200: tcflag_t = 0o000006;
pub const  B300: tcflag_t = 0o000007;
pub const  B600: tcflag_t = 0o000010;
pub const  B1200: tcflag_t = 0o000011;
pub const  B1800: tcflag_t = 0o000012;
pub const  B2400: tcflag_t = 0o000013;
pub const  B4800: tcflag_t = 0o000014;
pub const  B9600: tcflag_t = 0o000015;
pub const  B19200: tcflag_t = 0o000016;
pub const  B38400: tcflag_t = 0o000017;
pub const  B57600: tcflag_t = 0o0020;
pub const  B115200: tcflag_t = 0o0021;
pub const  B230400: tcflag_t = 0o0022;
pub const  B460800: tcflag_t = 0o0023;
pub const  B500000: tcflag_t = 0o0024;
pub const  B576000: tcflag_t = 0o0025;
pub const  B921600: tcflag_t = 0o0026;
pub const  B1000000: tcflag_t = 0o0027;
pub const  B1152000: tcflag_t = 0o0030;
pub const  B1500000: tcflag_t = 0o0031;
pub const  B2000000: tcflag_t = 0o0032;
pub const  B2500000: tcflag_t = 0o0033;
pub const  B3000000: tcflag_t = 0o0034;
pub const  B3500000: tcflag_t = 0o0035;
pub const  B4000000: tcflag_t = 0o0036;

pub const __MAX_BAUD: tcflag_t = B4000000;

pub const CSIZE: tcflag_t = 0o0001400;
pub const   CS5: tcflag_t = 0o0000000;
pub const   CS6: tcflag_t = 0o0000400;
pub const   CS7: tcflag_t = 0o0001000;
pub const   CS8: tcflag_t = 0o0001400;

pub const CSTOPB: tcflag_t = 0o0002000;
pub const CREAD: tcflag_t = 0o0004000;
pub const PARENB: tcflag_t = 0o0010000;
pub const PARODD: tcflag_t = 0o0020000;
pub const HUPCL: tcflag_t = 0o0040000;

pub const CLOCAL: tcflag_t = 0o0100000;
/* } c_clfag */

/* c_lflag { */
pub const ISIG: tcflag_t = 0x00000080;
pub const ICANON: tcflag_t = 0x00000100;
pub const ECHO: tcflag_t = 0x00000008;
pub const ECHOE: tcflag_t = 0x00000002;
pub const ECHOK: tcflag_t = 0x00000004;
pub const ECHONL: tcflag_t = 0x00000010;
pub const NOFLSH: tcflag_t = 0x80000000;
pub const TOSTOP: tcflag_t = 0x00400000;
pub const IEXTEN: tcflag_t = 0x00000400;
/* } c_lflag */

#[derive(Clone, Copy, Debug)]
#[repr(C)]
pub struct Termios {
    pub c_iflag: tcflag_t,
    pub c_oflag: tcflag_t,
    pub c_cflag: tcflag_t,
    pub c_lflag: tcflag_t,
    pub c_cc: [cc_t; 32]
}

impl Default for Termios {
    fn default() -> Termios {
        let mut termios = Termios {
            c_iflag: ICRNL | IXON,
            c_oflag: OPOST | ONLCR,
            c_cflag: B38400 | CS8 | CREAD | HUPCL,
            c_lflag: ISIG | ICANON | ECHO | ECHOE | ECHOK | IEXTEN,
            c_cc: [0; 32]
        };

        {
            let mut cc = |i: usize, b: cc_t| {
                termios.c_cc[i] = b;
            };

            cc(VEOF, 0o004);    // CTRL-D
            cc(VEOL, 0o000);    // NUL
            cc(VEOL2, 0o000);   // NUL
            cc(VERASE, 0o177);  // DEL
            cc(VWERASE, 0o027); // CTRL-W
            cc(VKILL, 0o025);   // CTRL-U
            cc(VREPRINT, 0o022);// CTRL-R
            cc(VINTR, 0o003);   // CTRL-C
            cc(VQUIT, 0o034);   // CTRL-\
            cc(VSUSP, 0o032);   // CTRL-Z
            cc(VSTART, 0o021);  // CTRL-Q
            cc(VSTOP, 0o023);   // CTRL-S
            cc(VLNEXT, 0o026);  // CTRL-V
            cc(VDISCARD, 0o017);// CTRL-U
            cc(VMIN, 1);
            cc(VTIME, 0);
        }

        termios
    }
}

impl Termios {
    pub fn make_raw(&mut self) {
        self.c_iflag &= !(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
        self.c_oflag &= !OPOST;
        self.c_cflag &= !(CSIZE | PARENB);
        self.c_cflag |= CS8;
        self.c_lflag &= !(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
    }
}

impl Deref for Termios {
    type Target = [u8];
    fn deref(&self) -> &[u8] {
        unsafe {
            slice::from_raw_parts(self as *const Termios as *const u8, mem::size_of::<Termios>()) as &[u8]
        }
    }
}

impl DerefMut for Termios {
    fn deref_mut(&mut self) -> &mut [u8] {
        unsafe {
            slice::from_raw_parts_mut(self as *mut Termios as *mut u8, mem::size_of::<Termios>()) as &mut [u8]
        }
    }
}

#[derive(Clone, Copy, Debug, Default)]
#[repr(C)]
pub struct Winsize {
    pub ws_row: u16,
    pub ws_col: u16
}

impl Deref for Winsize {
    type Target = [u8];
    fn deref(&self) -> &[u8] {
        unsafe {
            slice::from_raw_parts(self as *const Winsize as *const u8, mem::size_of::<Winsize>()) as &[u8]
        }
    }
}

impl DerefMut for Winsize {
    fn deref_mut(&mut self) -> &mut [u8] {
        unsafe {
            slice::from_raw_parts_mut(self as *mut Winsize as *mut u8, mem::size_of::<Winsize>()) as &mut [u8]
        }
    }
}