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Made running_command.rs implement FloatContent so it can be shown inside a float

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afonsofrancof 2024-08-06 17:22:15 +01:00
parent f0e67ba313
commit 65b7246099
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1 changed files with 97 additions and 102 deletions
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199
src/running_command.rs
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@ -1,28 +1,26 @@
use std::{
io::Write,
sync::{Arc, Mutex},
thread::JoinHandle,
};
use crate::{float::FloatContent, state::AppState};
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
use oneshot::{channel, Receiver};
use portable_pty::{
ChildKiller, CommandBuilder, ExitStatus, MasterPty, NativePtySystem, PtySize, PtySystem,
};
use ratatui::{
layout::Size,
style::{Style, Stylize},
layout::{Rect, Size},
style::{Color, Style, Stylize},
text::{Line, Span},
widgets::{Block, Borders},
Frame,
};
use std::{
io::Write,
sync::{Arc, Mutex},
thread::JoinHandle,
};
use tui_term::{
vt100::{self, Screen},
widget::PseudoTerminal,
};
use crate::{float::floating_window, state::AppState};
#[derive(Clone)]
pub enum Command {
Raw(&'static str),
@ -30,36 +28,107 @@ pub enum Command {
None, // Directory
}
/// This is a struct for storing everything connected to a running command
// Create a new instance on every new command you want to run
pub struct RunningCommand {
/// A buffer to save all the command output (accumulates, untill the command exits)
/// A buffer to save all the command output (accumulates, until the command exits)
buffer: Arc<Mutex<Vec<u8>>>,
/// A handle of the tread where the command is being executed
/// A handle for the thread running the command
command_thread: Option<JoinHandle<ExitStatus>>,
/// A handle to kill the running process, it's an option because it can only be used once
/// A handle to kill the running process; it's an option because it can only be used once
child_killer: Option<Receiver<Box<dyn ChildKiller + Send + Sync>>>,
/// A join handle for the thread that is reading all the command output and sending it to the
/// main thread
/// A join handle for the thread that reads command output and sends it to the main thread
_reader_thread: JoinHandle<()>,
/// Virtual terminal (pty) handle, used for resizing the pty
pty_master: Box<dyn MasterPty + Send>,
/// Used for sending keys to the emulated terminal
writer: Box<dyn Write + Send>,
/// Only set after the process has ended
status: Option<ExitStatus>,
}
impl FloatContent for RunningCommand {
fn draw(&mut self, frame: &mut Frame, area: Rect) {
// Calculate the inner size of the terminal area, considering borders
let inner_size = Size {
width: area.width - 2, // Adjust for border width
height: area.height - 2,
};
// Define the block for the terminal display
let block = if !self.is_finished() {
// Display a block indicating the command is running
Block::default()
.borders(Borders::ALL)
.title_top(Line::from("Running the command....").centered())
.title_style(Style::default().reversed())
.title_bottom(Line::from("Press Ctrl-C to KILL the command"))
} else {
// Display a block with the command's exit status
let mut title_line = if self.get_exit_status().success() {
Line::from(
Span::default()
.content("SUCCESS!")
.style(Style::default().fg(Color::Green).reversed()),
)
} else {
Line::from(
Span::default()
.content("FAILED!")
.style(Style::default().fg(Color::Red).reversed()),
)
};
title_line.push_span(
Span::default()
.content(" press <ENTER> to close this window ")
.style(Style::default()),
);
Block::default()
.borders(Borders::ALL)
.title_top(title_line.centered())
};
// Process the buffer and create the pseudo-terminal widget
let screen = self.screen(inner_size);
let pseudo_term = PseudoTerminal::new(&screen).block(block);
// Render the widget on the frame
frame.render_widget(pseudo_term, area);
}
/// Handle key events of the running command "window". Returns true when the "window" should be
/// closed
fn handle_key_event(&mut self, key: &KeyEvent) -> bool {
match key.code {
// Handle Ctrl-C to kill the command
KeyCode::Char('c') if key.modifiers.contains(KeyModifiers::CONTROL) => {
self.kill_child();
}
// Close the window when Enter is pressed and the command is finished
KeyCode::Enter if self.is_finished() => {
return true;
}
// Pass other key events to the terminal
_ => self.handle_passthrough_key_event(key),
}
false
}
fn is_finished(&self) -> bool {
// Check if the command thread has finished
if let Some(command_thread) = &self.command_thread {
command_thread.is_finished()
} else {
true
}
}
}
impl RunningCommand {
pub fn new(command: Command, state: &AppState) -> Self {
let pty_system = NativePtySystem::default();
// Build the command based on the provided Command enum variant
let mut cmd = CommandBuilder::new("sh");
match command {
Command::Raw(prompt) => {
@ -74,10 +143,11 @@ impl RunningCommand {
cmd.cwd(&state.temp_path);
// Open a pseudo-terminal with initial size
let pair = pty_system
.openpty(PtySize {
rows: 24, // Set the initial size of the emulated terminal
cols: 80, // We will update this later, if resized
rows: 24, // Initial number of rows (will be updated dynamically)
cols: 80, // Initial number of columns (will be updated dynamically)
pixel_width: 0,
pixel_height: 0,
})
@ -129,6 +199,7 @@ impl RunningCommand {
status: None,
}
}
fn screen(&mut self, size: Size) -> Screen {
// Resize the emulated pty
self.pty_master
@ -149,13 +220,7 @@ impl RunningCommand {
parser.process(buffer);
parser.screen().clone()
}
pub fn is_finished(&mut self) -> bool {
if let Some(command_thread) = &self.command_thread {
command_thread.is_finished()
} else {
true
}
}
/// This function will block if the command is not finished
fn get_exit_status(&mut self) -> ExitStatus {
if self.command_thread.is_some() {
@ -168,57 +233,6 @@ impl RunningCommand {
}
}
pub fn draw(&mut self, frame: &mut Frame, state: &AppState) {
// Funny name
let floater = floating_window(frame.size());
let inner_size = Size {
width: floater.width - 2, // Because we add a `Block` with a border
height: floater.height - 2,
};
// When the command is running
let term_border = if !self.is_finished() {
Block::default()
.borders(Borders::ALL)
.title_top(Line::from("Running the command....").centered())
.title_style(Style::default().reversed())
.title_bottom(Line::from("Press Ctrl-C to KILL the command"))
} else {
// This portion is just for pretty colors.
// You can use multiple `Span`s with different styles each, to construct a line,
// which can be used as a list item, or in this case a `Block` title
let mut title_line = if self.get_exit_status().success() {
Line::from(
Span::default()
.content("SUCCESS!")
.style(Style::default().fg(state.theme.success_color).reversed()),
)
} else {
Line::from(
Span::default()
.content("FAILED!")
.style(Style::default().fg(state.theme.fail_color).reversed()),
)
};
title_line.push_span(
Span::default()
.content(" press <ENTER> to close this window ")
.style(Style::default()),
);
Block::default()
.borders(Borders::ALL)
.title_top(title_line.centered())
};
let screen = self.screen(inner_size); // when the terminal is changing a lot, there
// will be 1 frame of lag on resizing
let pseudo_term = PseudoTerminal::new(&screen).block(term_border);
frame.render_widget(pseudo_term, floater);
}
/// Send SIGHUB signal, *not* SIGKILL or SIGTERM, to the child process
pub fn kill_child(&mut self) {
if !self.is_finished() {
@ -227,22 +241,6 @@ impl RunningCommand {
}
}
/// Handle key events of the running command "window". Returns true when the "window" should be
/// closed
pub fn handle_key_event(&mut self, key: &KeyEvent) -> bool {
match key.code {
KeyCode::Char('c') if key.modifiers.contains(KeyModifiers::CONTROL) => {
self.kill_child()
}
KeyCode::Enter if self.is_finished() => {
return true;
}
_ => self.handle_passthrough_key_event(key),
};
false
}
/// Convert the KeyEvent to pty key codes, and send them to the virtual terminal
fn handle_passthrough_key_event(&mut self, key: &KeyEvent) {
let input_bytes = match key.code {
@ -260,9 +258,6 @@ impl RunningCommand {
'6' | '^' => send = vec![30],
'7' | '-' | '_' => send = vec![31],
char if ('A'..='_').contains(&char) => {
// Since A == 65,
// we can safely subtract 64 to get
// the corresponding control character
let ascii_val = char as u8;
let ascii_to_send = ascii_val - 64;
send = vec![ascii_to_send];