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
|
mod markdown;
pub use self::markdown::MarkdownRender;
use crate::repl::{ReplyStreamEvent, SharedAbortSignal};
use anyhow::Result;
use crossbeam::channel::Receiver;
use crossterm::{
cursor,
event::{self, Event, KeyCode, KeyModifiers},
queue, style,
terminal::{self, disable_raw_mode, enable_raw_mode},
};
use std::{
io::{self, Stdout, Write},
time::{Duration, Instant},
};
use unicode_width::UnicodeWidthStr;
pub fn render_stream(rx: Receiver<ReplyStreamEvent>, abort: SharedAbortSignal) -> Result<()> {
enable_raw_mode()?;
let mut stdout = io::stdout();
queue!(stdout, event::DisableMouseCapture)?;
let ret = render_stream_inner(rx, abort, &mut stdout);
queue!(stdout, event::DisableMouseCapture)?;
disable_raw_mode()?;
ret
}
pub fn render_stream_inner(
rx: Receiver<ReplyStreamEvent>,
abort: SharedAbortSignal,
writer: &mut Stdout,
) -> Result<()> {
let mut last_tick = Instant::now();
let tick_rate = Duration::from_millis(200);
let mut buffer = String::new();
let mut markdown_render = MarkdownRender::new();
let terminal_columns = terminal::size()?.0;
loop {
if abort.aborted() {
return Ok(());
}
if let Ok(evt) = rx.try_recv() {
recover_cursor(writer, terminal_columns, &buffer)?;
match evt {
ReplyStreamEvent::Text(text) => {
if text.contains('\n') {
let text = format!("{buffer}{text}");
let mut lines: Vec<&str> = text.split('\n').collect();
buffer = lines.pop().unwrap_or_default().to_string();
let output = markdown_render.render(&lines.join("\n"));
queue!(
writer,
style::Print(output),
style::Print("\n"),
style::Print(&buffer),
)?;
} else {
buffer = format!("{buffer}{text}");
let output = markdown_render.render_line_stateless(&buffer);
queue!(writer, style::Print(&output))?;
}
writer.flush()?;
}
ReplyStreamEvent::Done => {
let output = markdown_render.render_line_stateless(&buffer);
queue!(writer, style::Print(output), style::Print("\n"))?;
writer.flush()?;
break;
}
}
continue;
}
let timeout = tick_rate
.checked_sub(last_tick.elapsed())
.unwrap_or_else(|| Duration::from_secs(0));
if crossterm::event::poll(timeout)? {
if let Event::Key(key) = event::read()? {
match key.code {
KeyCode::Char('c') if key.modifiers == KeyModifiers::CONTROL => {
abort.set_ctrlc();
return Ok(());
}
KeyCode::Char('d') if key.modifiers == KeyModifiers::CONTROL => {
abort.set_ctrld();
return Ok(());
}
_ => {}
}
}
}
if last_tick.elapsed() >= tick_rate {
last_tick = Instant::now();
}
}
Ok(())
}
fn recover_cursor(writer: &mut Stdout, terminal_columns: u16, buffer: &str) -> Result<()> {
let buffer_rows = (buffer.width() as u16 + terminal_columns - 1) / terminal_columns;
let (_, row) = cursor::position()?;
if row + 1 >= buffer_rows {
queue!(writer, cursor::MoveTo(0, row + 1 - buffer_rows))?;
} else {
queue!(
writer,
terminal::ScrollUp(buffer_rows - 1 - row),
cursor::MoveTo(0, 0)
)?;
}
Ok(())
}
|
