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
|
use libc;
use std;
use cell;
use ffi;
use types;
pub struct Screen(*mut types::ScreenImpl);
#[repr(C)]
struct ScreenGridPrefix {
cur: types::Loc,
max: types::Loc,
}
#[repr(C)]
struct ScreenImplPrefix {
grid: *mut ScreenGridPrefix,
}
impl Screen {
pub fn new(rows: i32, cols: i32) -> Screen {
let screen_impl = unsafe {
ffi::vt100_screen_new(rows as libc::c_int, cols as libc::c_int)
};
Screen(screen_impl)
}
pub fn rows(&self) -> i32 {
let Screen(screen_impl) = *self;
let prefix: *mut ScreenImplPrefix = unsafe {
std::mem::transmute(screen_impl)
};
unsafe { (*(*prefix).grid).max.row }
}
pub fn cols(&self) -> i32 {
let Screen(screen_impl) = *self;
let prefix: *mut ScreenImplPrefix = unsafe {
std::mem::transmute(screen_impl)
};
unsafe { (*(*prefix).grid).max.col }
}
pub fn set_window_size(&self, rows: i32, cols: i32) {
let Screen(screen_impl) = *self;
unsafe { ffi::vt100_screen_set_window_size(screen_impl, rows, cols) };
}
pub fn set_scrollback_length(&self, rows: i32) {
let Screen(screen_impl) = *self;
unsafe { ffi::vt100_screen_set_scrollback_length(screen_impl, rows) };
}
pub fn process(&mut self, s: &[u8]) -> u64 {
let Screen(screen_impl) = *self;
unsafe {
ffi::vt100_screen_process_string(
screen_impl,
s.as_ptr() as *const libc::c_char,
s.len()
) as u64
}
}
pub fn window_contents(&self,
row_start: i32,
col_start: i32,
row_end: i32,
col_end: i32
) -> String {
let Screen(screen_impl) = *self;
let row_start = std::cmp::min(
std::cmp::max(row_start, 0),
self.rows() - 1
);
let col_start = std::cmp::min(
std::cmp::max(col_start, 0),
self.cols() - 1
);
let row_end = std::cmp::min(
std::cmp::max(row_end, 0),
self.rows() - 1
);
let col_end = std::cmp::min(
std::cmp::max(col_end, 0),
self.cols() - 1
);
let start_loc = types::Loc { row: row_start, col: col_start };
let end_loc = types::Loc { row: row_end, col: col_end };
let mut plaintext: *mut libc::c_char = unsafe { std::mem::uninitialized() };
let mut len: libc::size_t = unsafe { std::mem::uninitialized() };
unsafe {
ffi::vt100_screen_get_string_plaintext(
screen_impl,
&start_loc as *const types::Loc,
&end_loc as *const types::Loc,
&mut plaintext as *mut *mut libc::c_char,
&mut len as *mut libc::size_t,
)
};
let rust_plaintext = unsafe {
std::slice::from_raw_parts(
plaintext as *mut libc::c_uchar,
len
)
}.to_vec();
std::string::String::from_utf8(rust_plaintext).unwrap()
}
pub fn cell(&self, row: i32, col: i32) -> Option<cell::Cell> {
let Screen(screen_impl) = *self;
if row < 0 || row >= self.rows() || col < 0 || col >= self.cols() {
return None
}
let cell_impl = unsafe {
ffi::vt100_screen_cell_at(screen_impl, row, col)
};
Some(cell::Cell::new(cell_impl))
}
}
impl Drop for Screen {
fn drop(&mut self) {
let Screen(screen_impl) = *self;
unsafe { ffi::vt100_screen_delete(screen_impl) };
}
}
|
