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
|
#include "libbb.h"
int tcsetattr(int fd, int mode UNUSED_PARAM, const struct termios *t)
{
HANDLE h = (HANDLE)_get_osfhandle(fd);
if (!SetConsoleMode(h, t->w_mode)) {
errno = err_win_to_posix();
return -1;
}
return 0;
}
int tcgetattr(int fd, struct termios *t)
{
HANDLE h = (HANDLE)_get_osfhandle(fd);
if (!GetConsoleMode(h, &t->w_mode)) {
errno = err_win_to_posix();
return -1;
}
t->c_cc[VINTR] = 3; // ctrl-c
t->c_cc[VEOF] = 4; // ctrl-d
if (t->w_mode & ENABLE_ECHO_INPUT)
t->c_lflag |= ECHO;
else
t->c_lflag &= ~ECHO;
return 0;
}
int64_t FAST_FUNC windows_read_key(int fd, char *buf UNUSED_PARAM, int timeout)
{
HANDLE cin = GetStdHandle(STD_INPUT_HANDLE);
INPUT_RECORD record;
DWORD nevent_out, mode;
int ret = -1;
DWORD alt_pressed = FALSE;
DWORD state;
if (fd != 0)
bb_error_msg_and_die("read_key only works on stdin");
if (cin == INVALID_HANDLE_VALUE)
return -1;
GetConsoleMode(cin, &mode);
SetConsoleMode(cin, 0);
while (1) {
errno = 0;
if (timeout > 0) {
if (WaitForSingleObject(cin, timeout) != WAIT_OBJECT_0)
goto done;
}
if (!readConsoleInput_utf8(cin, &record, 1, &nevent_out))
goto done;
if (record.EventType != KEY_EVENT)
continue;
state = record.Event.KeyEvent.dwControlKeyState;
if (!record.Event.KeyEvent.bKeyDown) {
/* ignore all key up events except Alt */
if (!(alt_pressed && (state & LEFT_ALT_PRESSED) == 0 &&
record.Event.KeyEvent.wVirtualKeyCode == VK_MENU))
continue;
}
alt_pressed = state & LEFT_ALT_PRESSED;
if (!record.Event.KeyEvent.uChar.AsciiChar) {
if (alt_pressed && !(state & ENHANCED_KEY)) {
/* keys on numeric pad used to enter character codes */
switch (record.Event.KeyEvent.wVirtualKeyCode) {
case VK_NUMPAD0: case VK_INSERT:
case VK_NUMPAD1: case VK_END:
case VK_NUMPAD2: case VK_DOWN:
case VK_NUMPAD3: case VK_NEXT:
case VK_NUMPAD4: case VK_LEFT:
case VK_NUMPAD5: case VK_CLEAR:
case VK_NUMPAD6: case VK_RIGHT:
case VK_NUMPAD7: case VK_HOME:
case VK_NUMPAD8: case VK_UP:
case VK_NUMPAD9: case VK_PRIOR:
continue;
}
}
switch (record.Event.KeyEvent.wVirtualKeyCode) {
case VK_DELETE: ret = KEYCODE_DELETE; break;
case VK_INSERT: ret = KEYCODE_INSERT; break;
case VK_UP: ret = KEYCODE_UP; break;
case VK_DOWN: ret = KEYCODE_DOWN; break;
case VK_RIGHT: ret = KEYCODE_RIGHT; break;
case VK_LEFT: ret = KEYCODE_LEFT; break;
case VK_HOME: ret = KEYCODE_HOME; break;
case VK_END: ret = KEYCODE_END; break;
case VK_PRIOR: ret = KEYCODE_PAGEUP; break;
case VK_NEXT: ret = KEYCODE_PAGEDOWN; break;
default:
alt_pressed = FALSE;
continue;
}
if (state & (RIGHT_ALT_PRESSED|LEFT_ALT_PRESSED))
ret &= ~0x20;
if (state & (RIGHT_CTRL_PRESSED|LEFT_CTRL_PRESSED))
ret &= ~0x40;
if (state & SHIFT_PRESSED)
ret &= ~0x80;
goto done;
}
if ( (record.Event.KeyEvent.uChar.AsciiChar & 0x80) == 0x80 ) {
char *s = &record.Event.KeyEvent.uChar.AsciiChar;
conToCharBuffA(s, 1);
}
ret = record.Event.KeyEvent.uChar.AsciiChar;
if (state & (RIGHT_ALT_PRESSED|LEFT_ALT_PRESSED)) {
switch (ret) {
case '\b': ret = KEYCODE_ALT_BACKSPACE; goto done;
case 'b': ret = KEYCODE_ALT_LEFT; goto done;
case 'd': ret = KEYCODE_ALT_D; goto done;
case 'f': ret = KEYCODE_ALT_RIGHT; goto done;
}
}
break;
}
done:
SetConsoleMode(cin, mode);
return ret;
}
|
