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use super::{
compile,
kpsewhich::{self, KpsewhichError, Resolver},
Artifacts, CompileError, CompileParams, Distribution, DistributionKind,
};
use async_trait::async_trait;
use futures::lock::Mutex;
use std::{
io, mem,
path::{Path, PathBuf},
str::Lines,
sync::Arc,
};
use tokio::fs;
#[derive(Debug, Default)]
pub struct Texlive {
resolver: Mutex<Arc<Resolver>>,
}
#[async_trait]
impl Distribution for Texlive {
fn kind(&self) -> DistributionKind {
DistributionKind::Texlive
}
async fn compile<'a>(&'a self, params: CompileParams<'a>) -> Result<Artifacts, CompileError> {
compile(params).await
}
async fn load(&self) -> Result<(), KpsewhichError> {
let root_directories = kpsewhich::root_directories().await?;
let resolver = kpsewhich::parse_database(&root_directories, read_database).await?;
mem::replace(&mut *self.resolver.lock().await, Arc::new(resolver));
Ok(())
}
async fn resolver(&self) -> Arc<Resolver> {
let resolver = self.resolver.lock().await;
Arc::clone(&resolver)
}
}
const DATABASE_PATH: &str = "ls-R";
async fn read_database(directory: &Path) -> Result<Vec<PathBuf>, KpsewhichError> {
let file = directory.join(DATABASE_PATH);
if !file.is_file() {
return Ok(Vec::new());
}
let text = fs::read_to_string(file)
.await
.map_err(|_| KpsewhichError::NoDatabase)?;
parse_database(text.lines()).map_err(|_| KpsewhichError::CorruptDatabase)
}
fn parse_database(lines: Lines) -> io::Result<Vec<PathBuf>> {
let mut paths = Vec::new();
let mut directory = "";
for line in lines.filter(|x| !x.trim().is_empty() && !x.starts_with('%')) {
if line.ends_with(':') {
directory = &line[..line.len() - 1];
} else {
let path = PathBuf::from(directory).join(line);
paths.push(path);
}
}
Ok(paths)
}
|