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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
#[cfg(not(target_os = "windows"))]
extern crate libc;
#[cfg(target_os = "windows")]
extern crate kernel32;
#[cfg(target_os = "windows")]
extern crate winapi;
pub use platform::{dimensions, dimensions_stdout, dimensions_stdin, dimensions_stderr};
#[cfg(any(target_os = "linux",
target_os = "android",
target_os = "macos",
target_os = "ios",
target_os = "bitrig",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
target_os = "solaris"))]
mod platform {
use libc::{STDOUT_FILENO, STDIN_FILENO, STDERR_FILENO, c_int, c_ulong, winsize};
use std::mem::zeroed;
#[cfg(any(target_os = "linux", target_os = "android"))]
static TIOCGWINSZ: c_ulong = 0x5413;
#[cfg(any(target_os = "macos",
target_os = "ios",
target_os = "bitrig",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd"))]
static TIOCGWINSZ: c_ulong = 0x40087468;
#[cfg(target_os = "solaris")]
static TIOCGWINSZ: c_ulong = 0x5468;
extern "C" {
fn ioctl(fd: c_int, request: c_ulong, ...) -> c_int;
}
unsafe fn get_dimensions_any() -> winsize {
let mut window: winsize = zeroed();
let mut result = ioctl(STDOUT_FILENO, TIOCGWINSZ, &mut window);
if result == -1 {
window = zeroed();
result = ioctl(STDIN_FILENO, TIOCGWINSZ, &mut window);
if result == -1 {
window = zeroed();
result = ioctl(STDERR_FILENO, TIOCGWINSZ, &mut window);
if result == -1 {
return zeroed();
}
}
}
window
}
unsafe fn get_dimensions_out() -> winsize {
let mut window: winsize = zeroed();
let result = ioctl(STDOUT_FILENO, TIOCGWINSZ, &mut window);
if result != -1 {
return window;
}
zeroed()
}
unsafe fn get_dimensions_in() -> winsize {
let mut window: winsize = zeroed();
let result = ioctl(STDIN_FILENO, TIOCGWINSZ, &mut window);
if result != -1 {
return window;
}
zeroed()
}
unsafe fn get_dimensions_err() -> winsize {
let mut window: winsize = zeroed();
let result = ioctl(STDERR_FILENO, TIOCGWINSZ, &mut window);
if result != -1 {
return window;
}
zeroed()
}
pub fn dimensions() -> Option<(usize, usize)> {
let w = unsafe { get_dimensions_any() };
if w.ws_col == 0 || w.ws_row == 0 {
None
} else {
Some((w.ws_col as usize, w.ws_row as usize))
}
}
pub fn dimensions_stdout() -> Option<(usize, usize)> {
let w = unsafe { get_dimensions_out() };
if w.ws_col == 0 || w.ws_row == 0 {
None
} else {
Some((w.ws_col as usize, w.ws_row as usize))
}
}
pub fn dimensions_stdin() -> Option<(usize, usize)> {
let w = unsafe { get_dimensions_in() };
if w.ws_col == 0 || w.ws_row == 0 {
None
} else {
Some((w.ws_col as usize, w.ws_row as usize))
}
}
pub fn dimensions_stderr() -> Option<(usize, usize)> {
let w = unsafe { get_dimensions_err() };
if w.ws_col == 0 || w.ws_row == 0 {
None
} else {
Some((w.ws_col as usize, w.ws_row as usize))
}
}
}
#[cfg(target_os = "windows")]
mod platform {
use kernel32::{GetConsoleScreenBufferInfo, GetStdHandle};
use winapi::{CONSOLE_SCREEN_BUFFER_INFO, COORD, SMALL_RECT, STD_OUTPUT_HANDLE};
pub fn dimensions() -> Option<(usize, usize)> {
let null_coord = COORD { X: 0, Y: 0 };
let null_smallrect = SMALL_RECT {
Left: 0,
Top: 0,
Right: 0,
Bottom: 0,
};
let stdout_h = unsafe { GetStdHandle(STD_OUTPUT_HANDLE) };
let mut console_data = CONSOLE_SCREEN_BUFFER_INFO {
dwSize: null_coord,
dwCursorPosition: null_coord,
wAttributes: 0,
srWindow: null_smallrect,
dwMaximumWindowSize: null_coord,
};
if unsafe { GetConsoleScreenBufferInfo(stdout_h, &mut console_data) } != 0 {
Some(((console_data.srWindow.Right - console_data.srWindow.Left) as usize,
(console_data.srWindow.Bottom - console_data.srWindow.Top) as usize))
} else {
None
}
}
pub fn dimensions_stdout() -> Option<(usize, usize)> { dimensions() }
pub fn dimensions_stdin() -> Option<(usize, usize)> { unimplemented!() }
pub fn dimensions_stderr() -> Option<(usize, usize)> { unimplemented!() }
}
#[cfg(not(any(target_os = "linux",
target_os = "android",
target_os = "macos",
target_os = "ios",
target_os = "bitrig",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
target_os = "solaris",
target_os = "windows")))]
mod platform {
pub fn dimensions() -> Option<(usize, usize)> { None }
pub fn dimensions_stdout() -> Option<(usize, usize)> { None }
pub fn dimensions_stdin() -> Option<(usize, usize)> { None }
pub fn dimensions_stderr() -> Option<(usize, usize)> { None }
}