crates/distro/src/lib.rs
mod file_name_db;
mod kpsewhich;
mod language;
mod miktex;
mod texlive;
use std::process::{Command, Stdio};
use anyhow::Result;
pub use self::{file_name_db::FileNameDB, language::Language};
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub enum DistroKind {
Texlive,
Miktex,
Tectonic,
Unknown,
}
impl Default for DistroKind {
fn default() -> Self {
Self::Unknown
}
}
#[derive(Debug, Default)]
pub struct Distro {
pub kind: DistroKind,
pub file_name_db: FileNameDB,
}
impl Distro {
pub fn detect() -> Result<Self> {
let kind = match Command::new("latex").arg("--version").output() {
Ok(output) => {
let stdout = String::from_utf8_lossy(&output.stdout);
if stdout.contains("TeX Live") {
DistroKind::Texlive
} else if stdout.contains("MiKTeX") {
DistroKind::Miktex
} else {
DistroKind::Unknown
}
}
Err(_) => {
if Command::new("tectonic")
.arg("--version")
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
.is_ok()
{
DistroKind::Tectonic
} else {
DistroKind::Unknown
}
}
};
let mut file_name_db = match kind {
DistroKind::Texlive => {
let root_dirs = kpsewhich::root_directories()?;
FileNameDB::parse(&root_dirs, &mut texlive::read_database)?
}
DistroKind::Miktex => {
let root_dirs = kpsewhich::root_directories()?;
FileNameDB::parse(&root_dirs, &mut miktex::read_database)?
}
DistroKind::Tectonic | DistroKind::Unknown => FileNameDB::default(),
};
if let Some(bibinputs) = std::env::var_os("BIBINPUTS") {
for dir in std::env::split_paths(&bibinputs) {
if let Ok(entries) = std::fs::read_dir(dir) {
for file in entries
.flatten()
.filter(|entry| entry.file_type().map_or(false, |ty| ty.is_file()))
.map(|entry| entry.path())
{
file_name_db.insert(file);
}
}
}
}
Ok(Self { kind, file_name_db })
}
}