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|
use std::{
io::{BufReader, Read},
path::{Path, PathBuf},
process::{ExitStatus, Stdio},
thread::{self, JoinHandle},
};
use anyhow::Result;
use base_db::Workspace;
use bstr::io::BufReadExt;
use crossbeam_channel::Sender;
use thiserror::Error;
use url::Url;
use crate::placeholders::replace_placeholders;
#[derive(Debug, Error)]
pub enum BuildError {
#[error("Document \"{0}\" was not found")]
NotFound(Url),
#[error("Document \"{0}\" does not exist on the local file system")]
NotLocal(Url),
#[error("Unable to run compiler: {0}")]
Compile(#[from] std::io::Error),
}
#[derive(Debug)]
pub struct BuildCommand {
program: String,
args: Vec<String>,
working_dir: PathBuf,
}
impl BuildCommand {
pub fn new(workspace: &Workspace, uri: &Url) -> Result<Self, BuildError> {
let Some(document) = workspace.lookup(uri) else {
return Err(BuildError::NotFound(uri.clone()));
};
let document = workspace
.parents(document)
.into_iter()
.next()
.unwrap_or(document);
let Some(path) = document.path.as_deref().and_then(Path::to_str) else {
return Err(BuildError::NotLocal(document.uri.clone()));
};
let config = &workspace.config().build;
let program = config.program.clone();
let args = replace_placeholders(&config.args, &[('f', path)]);
let Ok(working_dir) = workspace.current_dir(&document.dir).to_file_path() else {
return Err(BuildError::NotLocal(document.uri.clone()));
};
Ok(Self {
program,
args,
working_dir,
})
}
pub fn run(self, sender: Sender<String>) -> Result<ExitStatus, BuildError> {
log::debug!(
"Spawning compiler {} {:#?} in directory {}",
self.program,
self.args,
self.working_dir.display()
);
let mut process = std::process::Command::new(&self.program)
.args(self.args)
.stdin(Stdio::null())
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.current_dir(&self.working_dir)
.spawn()?;
track_output(process.stderr.take().unwrap(), sender.clone());
track_output(process.stdout.take().unwrap(), sender);
let status = process.wait();
Ok(status?)
}
}
fn track_output(
output: impl Read + Send + 'static,
sender: Sender<String>,
) -> JoinHandle<std::io::Result<()>> {
let mut reader = BufReader::new(output);
thread::spawn(move || {
reader.for_byte_line(|line| {
let text = String::from_utf8_lossy(line).into_owned();
let _ = sender.send(text);
Ok(true)
})
})
}
|