Coverage for src/tty.mys : 100%
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1from . import OsError
3c"""source-before-namespace
4#include <termios.h>
5#include <unistd.h>
6"""
8func set_to_raw_mode(fd: i64):
9 """Set the mode of given file descriptor to raw.
11 """
13 ok = False
15 c"""
16 struct termios mode;
18 if (tcgetattr(fd, &mode) == 0) {
19 mode.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
20 mode.c_oflag &= ~(OPOST);
21 mode.c_cflag &= ~(CSIZE | PARENB);
22 mode.c_cflag |= CS8;
23 mode.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
24 mode.c_cc[VMIN] = 1;
25 mode.c_cc[VTIME] = 0;
27 if (tcsetattr(fd, TCSAFLUSH, &mode) == 0) {
28 ok = true;
29 }
30 }
31 """
33 if not ok:
34 raise OsError(f"Failed to set fd {fd} to raw mode.")
36func set_to_cbreak_mode(fd: i64):
37 """Set the mode of given file descriptor to cbreak.
39 """
41 ok = False
43 c"""
44 struct termios mode;
46 if (tcgetattr(fd, &mode) == 0) {
47 mode.c_lflag &= ~(ECHO | ICANON);
48 mode.c_cc[VMIN] = 1;
49 mode.c_cc[VTIME] = 0;
51 if (tcsetattr(fd, TCSAFLUSH, &mode) == 0) {
52 ok = true;
53 }
54 }
55 """
57 if not ok:
58 raise OsError(f"Failed to set fd {fd} to cbreak mode.")
60func is_tty(fd: i64) -> bool:
61 """Returns True if given file descriptor is a TTY, False otherwise.
63 """
65 tty: bool = False
67 c"""
68 tty = (isatty(fd) == 1);
69 """
71 return tty
73test set_to_raw_mode_bad_fd():
74 try:
75 message = ""
76 set_to_raw_mode(-1)
77 except OsError as err:
78 message = err.message
80 assert message == "Failed to set fd -1 to raw mode."
82test set_to_cbreak_mode_bad_fd():
83 try:
84 message = ""
85 set_to_cbreak_mode(-1)
86 except OsError as err:
87 message = err.message
89 assert message == "Failed to set fd -1 to cbreak mode."
91test is_tty():
92 assert not is_tty(-1)