itycodes
3 weeks ago
commit
059a409cb0
@ -0,0 +1 @@
|
||||
/target
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||||
@ -0,0 +1,324 @@
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||||
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"windows-strings",
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@ -0,0 +1,9 @@
|
||||
[package]
|
||||
name = "stdgather"
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
|
||||
[dependencies]
|
||||
chrono = "0.4.42"
|
||||
libc = "0.2.176"
|
||||
nix = { version = "0.30.1", features = ["fs", "poll", "process", "term"] }
|
||||
@ -0,0 +1,225 @@
|
||||
use chrono::Local;
|
||||
use libc::kill;
|
||||
use nix::poll::{PollFd, PollFlags, PollTimeout, poll};
|
||||
use nix::sys::wait::{WaitPidFlag, waitpid};
|
||||
use nix::unistd::{ForkResult, execvp, fork, setsid};
|
||||
use std::ffi::CString;
|
||||
use std::fs::File;
|
||||
use std::io::Read;
|
||||
use std::io::Write;
|
||||
use std::os::fd::{BorrowedFd, FromRawFd};
|
||||
use std::os::unix::io::AsRawFd;
|
||||
use std::ptr;
|
||||
|
||||
#[derive(Debug, Default)]
|
||||
struct Ptys {
|
||||
out_slave: libc::c_int,
|
||||
out_master: libc::c_int,
|
||||
err_slave: libc::c_int,
|
||||
err_master: libc::c_int,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
enum StdioStreamType {
|
||||
StdOut,
|
||||
StdErr,
|
||||
}
|
||||
|
||||
struct StdioStream<'a> {
|
||||
var: StdioStreamType,
|
||||
file: &'a File,
|
||||
is_tty: bool,
|
||||
buffer: &'a mut Vec<u8>,
|
||||
}
|
||||
|
||||
fn handle_data(mut stream: StdioStream) -> Result<(), ()> {
|
||||
let mut buf = [0u8; 65536];
|
||||
let res = stream.file.read(&mut buf);
|
||||
match res {
|
||||
Ok(0) => Err(()), // EOF
|
||||
Ok(n) => {
|
||||
let bufc = &buf[..n];
|
||||
for c in bufc {
|
||||
stream.buffer.push(*c);
|
||||
if *c == 0x0a as u8 {
|
||||
let format = String::from("%H:%M:%S.%6f")
|
||||
+ match (stream.is_tty, stream.var) {
|
||||
(true, StdioStreamType::StdOut) => " \x1b[32m(O)\x1b[0m ",
|
||||
(false, StdioStreamType::StdOut) => " (O) ",
|
||||
(true, StdioStreamType::StdErr) => " \x1b[31m(E)\x1b[0m ",
|
||||
(false, StdioStreamType::StdErr) => " (E) ",
|
||||
};
|
||||
let now = Local::now().format(&format).to_string();
|
||||
std::io::stdout().write_all(now.as_bytes()).unwrap();
|
||||
std::io::stdout().write_all(&stream.buffer).unwrap();
|
||||
stream.buffer.clear();
|
||||
}
|
||||
}
|
||||
std::io::stdout().flush().unwrap();
|
||||
Ok(())
|
||||
}
|
||||
Err(e) => {
|
||||
eprintln!("Read error: {}", e);
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let mut ptys = Ptys::default();
|
||||
unsafe {
|
||||
libc::openpty(
|
||||
&mut ptys.out_slave,
|
||||
&mut ptys.out_master,
|
||||
ptr::null_mut(),
|
||||
ptr::null_mut(),
|
||||
ptr::null_mut(),
|
||||
);
|
||||
libc::openpty(
|
||||
&mut ptys.err_slave,
|
||||
&mut ptys.err_master,
|
||||
ptr::null_mut(),
|
||||
ptr::null_mut(),
|
||||
ptr::null_mut(),
|
||||
);
|
||||
}
|
||||
assert!(ptys.out_slave != 0);
|
||||
assert!(ptys.out_master != 0);
|
||||
assert!(ptys.err_slave != 0);
|
||||
assert!(ptys.err_master != 0);
|
||||
|
||||
let is_tty = unsafe { libc::isatty(libc::STDOUT_FILENO) != 0 };
|
||||
|
||||
match unsafe { fork() } {
|
||||
Ok(ForkResult::Child) => {
|
||||
let cmd = CString::new("/bin/bash").unwrap();
|
||||
let bcmd = std::env::args().skip(1).collect::<Vec<String>>().join(" ");
|
||||
println!("Cmd: '{}'", bcmd);
|
||||
|
||||
setsid().expect("Failed to create new session");
|
||||
|
||||
unsafe { libc::close(ptys.out_master.as_raw_fd()) };
|
||||
unsafe {
|
||||
libc::dup2(ptys.out_slave.as_raw_fd(), libc::STDOUT_FILENO);
|
||||
libc::dup2(ptys.err_slave.as_raw_fd(), libc::STDERR_FILENO);
|
||||
// There's no real reason to dup the stdin.
|
||||
// It's not being used anyway.
|
||||
// ----------------------------------------------------------
|
||||
// libc::dup2(ptys.out_slave.as_raw_fd(), libc::STDIN_FILENO);
|
||||
}
|
||||
|
||||
unsafe { libc::close(ptys.out_slave.as_raw_fd()) };
|
||||
unsafe { libc::close(ptys.err_slave.as_raw_fd()) };
|
||||
|
||||
let args = [
|
||||
cmd.clone(),
|
||||
CString::new("-c").unwrap(),
|
||||
CString::new(bcmd).unwrap(),
|
||||
];
|
||||
execvp(&cmd, &args).expect("execvp failed");
|
||||
}
|
||||
|
||||
Ok(ForkResult::Parent { child }) => {
|
||||
let _ = child;
|
||||
// TODO: The kernel seems to garbage collect the pty
|
||||
// & the associated data when the only holder of the slave end dies,
|
||||
// resulting in errors reading it. So we keep a copy around.
|
||||
// I don't actually know if this is the correct way of doing things.
|
||||
// But it fixed the issues, so...
|
||||
// -----------------------------------------------------------------
|
||||
// unsafe { libc::close(slave.as_raw_fd()) };
|
||||
|
||||
let master_file_out = unsafe { File::from_raw_fd(ptys.out_master) };
|
||||
let master_file_err = unsafe { File::from_raw_fd(ptys.err_master) };
|
||||
|
||||
// In some racy cases, the read call might get stuck...
|
||||
// Maybe it'd be better to switch to non-blocking reads instead of
|
||||
// using poll.
|
||||
// ---------------------------------------------------------------
|
||||
// unsafe {
|
||||
// let flags = fcntl(ptys.out_master, F_GETFL, 0);
|
||||
// fcntl(ptys.out_master, F_SETFL, flags | O_NONBLOCK);
|
||||
// }
|
||||
|
||||
let mut poll_fds = [
|
||||
PollFd::new(
|
||||
unsafe { BorrowedFd::borrow_raw(ptys.out_master) },
|
||||
PollFlags::POLLIN | PollFlags::POLLHUP,
|
||||
),
|
||||
PollFd::new(
|
||||
unsafe { BorrowedFd::borrow_raw(ptys.err_master) },
|
||||
PollFlags::POLLIN | PollFlags::POLLHUP,
|
||||
),
|
||||
];
|
||||
|
||||
let mut out_buf: Vec<u8> = Vec::new();
|
||||
let mut err_buf: Vec<u8> = Vec::new();
|
||||
|
||||
loop {
|
||||
let res = poll(&mut poll_fds, PollTimeout::ZERO);
|
||||
if res.is_err() {
|
||||
eprintln!("Poll failed");
|
||||
std::process::exit(-1);
|
||||
}
|
||||
|
||||
let revents = poll_fds[0].revents();
|
||||
if let Some(revents) = revents {
|
||||
if revents.contains(PollFlags::POLLHUP) {
|
||||
break;
|
||||
}
|
||||
if revents.contains(PollFlags::POLLIN) {
|
||||
match handle_data(StdioStream {
|
||||
var: StdioStreamType::StdOut,
|
||||
file: &master_file_out,
|
||||
is_tty: is_tty,
|
||||
buffer: &mut out_buf,
|
||||
}) {
|
||||
Ok(_) => {}
|
||||
Err(_) => break,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
let revents = poll_fds[1].revents();
|
||||
if let Some(revents) = revents {
|
||||
if revents.contains(PollFlags::POLLHUP) {
|
||||
break;
|
||||
}
|
||||
if revents.contains(PollFlags::POLLIN) {
|
||||
match handle_data(StdioStream {
|
||||
var: StdioStreamType::StdErr,
|
||||
file: &master_file_err,
|
||||
is_tty: is_tty,
|
||||
buffer: &mut err_buf,
|
||||
}) {
|
||||
Ok(_) => {}
|
||||
Err(_) => break,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if res.ok().unwrap() == 0 && unsafe { kill(child.as_raw(), 0) } != 0 {
|
||||
// The poll might've timed out and in the short time between
|
||||
// the poll timeout and the check if the process is alive,
|
||||
// there might be pending data (unless the kernel deletes it...)
|
||||
// I have no evidence supporting this theory, though.
|
||||
// -------------------------------------------------------------
|
||||
// let mut buf = [0u8; 64];
|
||||
// match master_file.read(&mut buf) {
|
||||
// Ok(e) => println!("Ok: {}", e),
|
||||
// Err(_e) => {/*println!("Err: {}", e)*/}
|
||||
// }
|
||||
break;
|
||||
}
|
||||
|
||||
waitpid(child, Some(WaitPidFlag::WNOHANG)).ok();
|
||||
}
|
||||
}
|
||||
|
||||
Err(e) => {
|
||||
eprintln!("Fork failed: {}", e);
|
||||
std::process::exit(-1);
|
||||
}
|
||||
}
|
||||
println!("");
|
||||
}
|
||||
@ -0,0 +1,5 @@
|
||||
augroup StdInputSyntax
|
||||
autocmd!
|
||||
autocmd StdinReadPost *
|
||||
\ call timer_start(10, { -> execute('if getline(1) =~ "^Cmd: ''" | setfiletype stdgather | endif') })
|
||||
augroup END
|
||||
@ -0,0 +1,20 @@
|
||||
" syntax/stdgather.vim
|
||||
|
||||
" Clear previous syntax
|
||||
syntax clear
|
||||
|
||||
" Match and highlight time format HH:MM:SS.microseconds in light blue
|
||||
syntax match LogTime /\v\d{2}:\d{2}:\d{2}\.\d{6}/
|
||||
highlight LogTime ctermfg=LightBlue guifg=LightBlue
|
||||
|
||||
" Match and highlight ' (O) ' in green
|
||||
syntax match LogOK /\v\s\(O\)\s/
|
||||
highlight LogOK ctermfg=Green guifg=Green
|
||||
|
||||
" Match and highlight ' (E) ' in red
|
||||
syntax match LogError /\v\s\(E\)\s/
|
||||
highlight LogError ctermfg=Red guifg=Red
|
||||
|
||||
" Match the first line if it starts with Cmd: ' and ends with a single quote
|
||||
syntax match LogCmdLine /\%1l^Cmd: '.*'$/
|
||||
highlight LogCmdLine ctermfg=LightGrey guifg=DarkGrey
|
||||
Loading…
Reference in new issue