mirror of
https://github.com/typst/typst
synced 2025-05-14 04:56:26 +08:00
738 lines
22 KiB
Rust
738 lines
22 KiB
Rust
mod args;
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use std::cell::{RefCell, RefMut};
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use std::collections::HashMap;
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use std::fs::{self, File};
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use std::hash::Hash;
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use std::io::{self, Write};
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use std::path::{Path, PathBuf};
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use std::process;
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use clap::Parser;
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use codespan_reporting::diagnostic::{Diagnostic, Label};
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use codespan_reporting::term::{self, termcolor};
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use comemo::Prehashed;
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use elsa::FrozenVec;
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use memmap2::Mmap;
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use notify::{RecommendedWatcher, RecursiveMode, Watcher};
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use once_cell::unsync::OnceCell;
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use same_file::{is_same_file, Handle};
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use siphasher::sip128::{Hasher128, SipHasher};
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use termcolor::{ColorChoice, StandardStream, WriteColor};
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use typst::diag::{FileError, FileResult, SourceError, StrResult};
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use typst::eval::Library;
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use typst::font::{Font, FontBook, FontInfo, FontVariant};
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use typst::syntax::{Source, SourceId};
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use typst::util::{Buffer, PathExt};
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use typst::World;
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use walkdir::WalkDir;
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use crate::args::{CliArguments, Command, CompileCommand};
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type CodespanResult<T> = Result<T, CodespanError>;
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type CodespanError = codespan_reporting::files::Error;
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pub fn typst_version() -> &'static str {
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env!("TYPST_VERSION")
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}
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/// A summary of the input arguments relevant to compilation.
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struct CompileSettings {
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/// The path to the input file.
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input: PathBuf,
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/// The path to the output file.
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output: PathBuf,
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/// Whether to watch the input files for changes.
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watch: bool,
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/// The root directory for absolute paths.
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root: Option<PathBuf>,
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/// The paths to search for fonts.
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font_paths: Vec<PathBuf>,
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/// The open command to use.
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open: Option<Option<String>>,
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}
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impl CompileSettings {
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/// Create a new compile settings from the field values.
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pub fn new(
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input: PathBuf,
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output: Option<PathBuf>,
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watch: bool,
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root: Option<PathBuf>,
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font_paths: Vec<PathBuf>,
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open: Option<Option<String>>,
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) -> Self {
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let output = match output {
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Some(path) => path,
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None => input.with_extension("pdf"),
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};
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Self { input, output, watch, root, font_paths, open }
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}
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/// Create a new compile settings from the CLI arguments and a compile command.
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///
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/// # Panics
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/// Panics if the command is not a compile or watch command.
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pub fn with_arguments(args: CliArguments) -> Self {
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let watch = matches!(args.command, Command::Watch(_));
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let CompileCommand { input, output, open } = match args.command {
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Command::Compile(command) => command,
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Command::Watch(command) => command,
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_ => unreachable!(),
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};
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Self::new(input, output, watch, args.root, args.font_paths, open)
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}
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}
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struct FontsSettings {
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/// The font paths
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font_paths: Vec<PathBuf>,
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/// Whether to include font variants
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variants: bool,
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}
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impl FontsSettings {
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/// Create font settings from the field values.
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pub fn new(font_paths: Vec<PathBuf>, variants: bool) -> Self {
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Self { font_paths, variants }
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}
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/// Create a new font settings from the CLI arguments.
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///
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/// # Panics
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/// Panics if the command is not a fonts command.
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pub fn with_arguments(args: CliArguments) -> Self {
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match args.command {
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Command::Fonts(command) => Self::new(args.font_paths, command.variants),
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_ => unreachable!(),
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}
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}
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}
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/// Entry point.
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fn main() {
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let arguments = CliArguments::parse();
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let res = match &arguments.command {
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Command::Compile(_) | Command::Watch(_) => {
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compile(CompileSettings::with_arguments(arguments))
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}
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Command::Fonts(_) => fonts(FontsSettings::with_arguments(arguments)),
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};
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if let Err(msg) = res {
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print_error(&msg).expect("failed to print error");
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}
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}
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/// Print an application-level error (independent from a source file).
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fn print_error(msg: &str) -> io::Result<()> {
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let mut w = StandardStream::stderr(ColorChoice::Auto);
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let styles = term::Styles::default();
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w.set_color(&styles.header_error)?;
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write!(w, "error")?;
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w.reset()?;
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writeln!(w, ": {msg}.")
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}
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/// Execute a compilation command.
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fn compile(mut command: CompileSettings) -> StrResult<()> {
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let root = if let Some(root) = &command.root {
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root.clone()
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} else if let Some(dir) = command
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.input
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.canonicalize()
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.ok()
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.as_ref()
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.and_then(|path| path.parent())
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{
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dir.into()
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} else {
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PathBuf::new()
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};
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// Create the world that serves sources, fonts and files.
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let mut world = SystemWorld::new(root, &command.font_paths);
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// Perform initial compilation.
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let failed = compile_once(&mut world, &command)?;
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// open the file if requested, this must be done on the first **successful** compilation
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if !failed {
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if let Some(open) = command.open.take() {
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open_file(open.as_deref(), &command.output)?;
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}
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}
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if !command.watch {
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// Return with non-zero exit code in case of error.
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if failed {
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process::exit(1);
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}
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return Ok(());
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}
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// Setup file watching.
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let (tx, rx) = std::sync::mpsc::channel();
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let mut watcher = RecommendedWatcher::new(tx, notify::Config::default())
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.map_err(|_| "failed to watch directory")?;
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// Watch root directory recursively.
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watcher
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.watch(&world.root, RecursiveMode::Recursive)
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.map_err(|_| "failed to watch directory")?;
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// Handle events.
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let timeout = std::time::Duration::from_millis(100);
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loop {
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let mut recompile = false;
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for event in rx
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.recv()
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.into_iter()
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.chain(std::iter::from_fn(|| rx.recv_timeout(timeout).ok()))
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{
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let event = event.map_err(|_| "failed to watch directory")?;
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if event
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.paths
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.iter()
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.all(|path| is_same_file(path, &command.output).unwrap_or(false))
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{
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continue;
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}
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recompile |= world.relevant(&event);
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}
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if recompile {
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compile_once(&mut world, &command)?;
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comemo::evict(30);
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// open the file if requested, this must be done on the first **successful** compilation
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if let Some(open) = command.open.take() {
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open_file(open.as_deref(), &command.output)?;
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}
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}
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}
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}
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/// Compile a single time.
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fn compile_once(world: &mut SystemWorld, command: &CompileSettings) -> StrResult<bool> {
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status(command, Status::Compiling).unwrap();
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world.reset();
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world.main = world.resolve(&command.input).map_err(|err| err.to_string())?;
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match typst::compile(world) {
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// Export the PDF.
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Ok(document) => {
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let buffer = typst::export::pdf(&document);
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fs::write(&command.output, buffer).map_err(|_| "failed to write PDF file")?;
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status(command, Status::Success).unwrap();
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Ok(false)
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}
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// Print diagnostics.
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Err(errors) => {
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status(command, Status::Error).unwrap();
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print_diagnostics(world, *errors)
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.map_err(|_| "failed to print diagnostics")?;
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Ok(true)
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}
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}
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}
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/// Clear the terminal and render the status message.
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fn status(command: &CompileSettings, status: Status) -> io::Result<()> {
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if !command.watch {
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return Ok(());
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}
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let esc = 27 as char;
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let input = command.input.display();
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let output = command.output.display();
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let time = chrono::offset::Local::now();
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let timestamp = time.format("%H:%M:%S");
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let message = status.message();
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let color = status.color();
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let mut w = StandardStream::stderr(ColorChoice::Auto);
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write!(w, "{esc}c{esc}[1;1H")?;
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w.set_color(&color)?;
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write!(w, "watching")?;
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w.reset()?;
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writeln!(w, " {input}")?;
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w.set_color(&color)?;
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write!(w, "writing to")?;
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w.reset()?;
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writeln!(w, " {output}")?;
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writeln!(w)?;
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writeln!(w, "[{timestamp}] {message}")?;
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writeln!(w)?;
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w.flush()
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}
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/// The status in which the watcher can be.
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enum Status {
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Compiling,
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Success,
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Error,
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}
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impl Status {
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fn message(&self) -> &str {
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match self {
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Self::Compiling => "compiling ...",
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Self::Success => "compiled successfully",
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Self::Error => "compiled with errors",
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}
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}
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fn color(&self) -> termcolor::ColorSpec {
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let styles = term::Styles::default();
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match self {
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Self::Error => styles.header_error,
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_ => styles.header_note,
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}
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}
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}
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/// Print diagnostic messages to the terminal.
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fn print_diagnostics(
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world: &SystemWorld,
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errors: Vec<SourceError>,
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) -> Result<(), codespan_reporting::files::Error> {
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let mut w = StandardStream::stderr(ColorChoice::Auto);
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let config = term::Config { tab_width: 2, ..Default::default() };
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for error in errors {
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// The main diagnostic.
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let range = error.range(world);
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let diag = Diagnostic::error()
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.with_message(error.message)
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.with_labels(vec![Label::primary(error.span.source(), range)]);
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term::emit(&mut w, &config, world, &diag)?;
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// Stacktrace-like helper diagnostics.
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for point in error.trace {
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let message = point.v.to_string();
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let help = Diagnostic::help().with_message(message).with_labels(vec![
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Label::primary(
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point.span.source(),
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world.source(point.span.source()).range(point.span),
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),
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]);
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term::emit(&mut w, &config, world, &help)?;
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}
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}
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Ok(())
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}
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/// Opens the given file using:
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/// - The default file viewer if `open` is `None`.
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/// - The given viewer provided by `open` if it is `Some`.
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fn open_file(open: Option<&str>, path: &Path) -> StrResult<()> {
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if let Some(app) = open {
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open::with(path, app).map_err(|err| {
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format!("failed to open `{}` with `{}`, reason: {}", path.display(), app, err)
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})?;
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} else {
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open::that(path).map_err(|err| {
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format!("failed to open `{}`, reason: {}", path.display(), err)
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})?;
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}
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Ok(())
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}
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/// Execute a font listing command.
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fn fonts(command: FontsSettings) -> StrResult<()> {
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let mut searcher = FontSearcher::new();
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searcher.search_system();
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for path in &command.font_paths {
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searcher.search_dir(path)
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}
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for (name, infos) in searcher.book.families() {
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println!("{name}");
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if command.variants {
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for info in infos {
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let FontVariant { style, weight, stretch } = info.variant;
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println!("- Style: {style:?}, Weight: {weight:?}, Stretch: {stretch:?}");
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}
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}
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}
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Ok(())
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}
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/// A world that provides access to the operating system.
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struct SystemWorld {
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root: PathBuf,
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library: Prehashed<Library>,
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book: Prehashed<FontBook>,
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fonts: Vec<FontSlot>,
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hashes: RefCell<HashMap<PathBuf, FileResult<PathHash>>>,
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paths: RefCell<HashMap<PathHash, PathSlot>>,
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sources: FrozenVec<Box<Source>>,
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main: SourceId,
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}
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/// Holds details about the location of a font and lazily the font itself.
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struct FontSlot {
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path: PathBuf,
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index: u32,
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font: OnceCell<Option<Font>>,
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}
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/// Holds canonical data for all paths pointing to the same entity.
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#[derive(Default)]
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struct PathSlot {
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source: OnceCell<FileResult<SourceId>>,
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buffer: OnceCell<FileResult<Buffer>>,
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}
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impl SystemWorld {
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fn new(root: PathBuf, font_paths: &[PathBuf]) -> Self {
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let mut searcher = FontSearcher::new();
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searcher.search_system();
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#[cfg(feature = "embed-fonts")]
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searcher.add_embedded();
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for path in font_paths {
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searcher.search_dir(path)
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}
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Self {
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root,
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library: Prehashed::new(typst_library::build()),
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book: Prehashed::new(searcher.book),
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fonts: searcher.fonts,
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hashes: RefCell::default(),
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paths: RefCell::default(),
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sources: FrozenVec::new(),
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main: SourceId::detached(),
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}
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}
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}
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impl World for SystemWorld {
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fn root(&self) -> &Path {
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&self.root
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}
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fn library(&self) -> &Prehashed<Library> {
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&self.library
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}
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fn main(&self) -> &Source {
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self.source(self.main)
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}
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fn resolve(&self, path: &Path) -> FileResult<SourceId> {
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self.slot(path)?
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.source
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.get_or_init(|| {
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let buf = read(path)?;
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let text = String::from_utf8(buf)?;
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Ok(self.insert(path, text))
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})
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.clone()
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}
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fn source(&self, id: SourceId) -> &Source {
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&self.sources[id.into_u16() as usize]
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}
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fn book(&self) -> &Prehashed<FontBook> {
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&self.book
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}
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fn font(&self, id: usize) -> Option<Font> {
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let slot = &self.fonts[id];
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slot.font
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.get_or_init(|| {
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let data = self.file(&slot.path).ok()?;
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Font::new(data, slot.index)
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})
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.clone()
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}
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fn file(&self, path: &Path) -> FileResult<Buffer> {
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self.slot(path)?
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.buffer
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.get_or_init(|| read(path).map(Buffer::from))
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.clone()
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}
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}
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impl SystemWorld {
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fn slot(&self, path: &Path) -> FileResult<RefMut<PathSlot>> {
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let mut hashes = self.hashes.borrow_mut();
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let hash = match hashes.get(path).cloned() {
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Some(hash) => hash,
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None => {
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let hash = PathHash::new(path);
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if let Ok(canon) = path.canonicalize() {
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hashes.insert(canon.normalize(), hash.clone());
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}
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hashes.insert(path.into(), hash.clone());
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hash
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}
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}?;
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Ok(std::cell::RefMut::map(self.paths.borrow_mut(), |paths| {
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paths.entry(hash).or_default()
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}))
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}
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fn insert(&self, path: &Path, text: String) -> SourceId {
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let id = SourceId::from_u16(self.sources.len() as u16);
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let source = Source::new(id, path, text);
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self.sources.push(Box::new(source));
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id
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}
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fn relevant(&mut self, event: ¬ify::Event) -> bool {
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match &event.kind {
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notify::EventKind::Any => {}
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notify::EventKind::Access(_) => return false,
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notify::EventKind::Create(_) => return true,
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notify::EventKind::Modify(kind) => match kind {
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notify::event::ModifyKind::Any => {}
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notify::event::ModifyKind::Data(_) => {}
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notify::event::ModifyKind::Metadata(_) => return false,
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notify::event::ModifyKind::Name(_) => return true,
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notify::event::ModifyKind::Other => return false,
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},
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notify::EventKind::Remove(_) => {}
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notify::EventKind::Other => return false,
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}
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event.paths.iter().any(|path| self.dependant(path))
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}
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fn dependant(&self, path: &Path) -> bool {
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self.hashes.borrow().contains_key(&path.normalize())
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|| PathHash::new(path)
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.map_or(false, |hash| self.paths.borrow().contains_key(&hash))
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}
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fn reset(&mut self) {
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self.sources.as_mut().clear();
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self.hashes.borrow_mut().clear();
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self.paths.borrow_mut().clear();
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}
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}
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|
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/// A hash that is the same for all paths pointing to the same entity.
|
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#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
|
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struct PathHash(u128);
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|
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impl PathHash {
|
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fn new(path: &Path) -> FileResult<Self> {
|
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let f = |e| FileError::from_io(e, path);
|
|
let handle = Handle::from_path(path).map_err(f)?;
|
|
let mut state = SipHasher::new();
|
|
handle.hash(&mut state);
|
|
Ok(Self(state.finish128().as_u128()))
|
|
}
|
|
}
|
|
|
|
/// Read a file.
|
|
fn read(path: &Path) -> FileResult<Vec<u8>> {
|
|
let f = |e| FileError::from_io(e, path);
|
|
if fs::metadata(path).map_err(f)?.is_dir() {
|
|
Err(FileError::IsDirectory)
|
|
} else {
|
|
fs::read(path).map_err(f)
|
|
}
|
|
}
|
|
|
|
impl<'a> codespan_reporting::files::Files<'a> for SystemWorld {
|
|
type FileId = SourceId;
|
|
type Name = std::path::Display<'a>;
|
|
type Source = &'a str;
|
|
|
|
fn name(&'a self, id: SourceId) -> CodespanResult<Self::Name> {
|
|
Ok(World::source(self, id).path().display())
|
|
}
|
|
|
|
fn source(&'a self, id: SourceId) -> CodespanResult<Self::Source> {
|
|
Ok(World::source(self, id).text())
|
|
}
|
|
|
|
fn line_index(&'a self, id: SourceId, given: usize) -> CodespanResult<usize> {
|
|
let source = World::source(self, id);
|
|
source
|
|
.byte_to_line(given)
|
|
.ok_or_else(|| CodespanError::IndexTooLarge {
|
|
given,
|
|
max: source.len_bytes(),
|
|
})
|
|
}
|
|
|
|
fn line_range(
|
|
&'a self,
|
|
id: SourceId,
|
|
given: usize,
|
|
) -> CodespanResult<std::ops::Range<usize>> {
|
|
let source = World::source(self, id);
|
|
source
|
|
.line_to_range(given)
|
|
.ok_or_else(|| CodespanError::LineTooLarge { given, max: source.len_lines() })
|
|
}
|
|
|
|
fn column_number(
|
|
&'a self,
|
|
id: SourceId,
|
|
_: usize,
|
|
given: usize,
|
|
) -> CodespanResult<usize> {
|
|
let source = World::source(self, id);
|
|
source.byte_to_column(given).ok_or_else(|| {
|
|
let max = source.len_bytes();
|
|
if given <= max {
|
|
CodespanError::InvalidCharBoundary { given }
|
|
} else {
|
|
CodespanError::IndexTooLarge { given, max }
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
/// Searches for fonts.
|
|
struct FontSearcher {
|
|
book: FontBook,
|
|
fonts: Vec<FontSlot>,
|
|
}
|
|
|
|
impl FontSearcher {
|
|
/// Create a new, empty system searcher.
|
|
fn new() -> Self {
|
|
Self { book: FontBook::new(), fonts: vec![] }
|
|
}
|
|
|
|
/// Add fonts that are embedded in the binary.
|
|
#[cfg(feature = "embed-fonts")]
|
|
fn add_embedded(&mut self) {
|
|
let mut add = |bytes: &'static [u8]| {
|
|
let buffer = Buffer::from_static(bytes);
|
|
for (i, font) in Font::iter(buffer).enumerate() {
|
|
self.book.push(font.info().clone());
|
|
self.fonts.push(FontSlot {
|
|
path: PathBuf::new(),
|
|
index: i as u32,
|
|
font: OnceCell::from(Some(font)),
|
|
});
|
|
}
|
|
};
|
|
|
|
// Embed default fonts.
|
|
add(include_bytes!("../../assets/fonts/LinLibertine_R.ttf"));
|
|
add(include_bytes!("../../assets/fonts/LinLibertine_RB.ttf"));
|
|
add(include_bytes!("../../assets/fonts/LinLibertine_RBI.ttf"));
|
|
add(include_bytes!("../../assets/fonts/LinLibertine_RI.ttf"));
|
|
add(include_bytes!("../../assets/fonts/NewCMMath-Book.otf"));
|
|
add(include_bytes!("../../assets/fonts/NewCMMath-Regular.otf"));
|
|
add(include_bytes!("../../assets/fonts/NewCM10-Regular.otf"));
|
|
add(include_bytes!("../../assets/fonts/NewCM10-Bold.otf"));
|
|
add(include_bytes!("../../assets/fonts/NewCM10-Italic.otf"));
|
|
add(include_bytes!("../../assets/fonts/NewCM10-BoldItalic.otf"));
|
|
add(include_bytes!("../../assets/fonts/DejaVuSansMono.ttf"));
|
|
add(include_bytes!("../../assets/fonts/DejaVuSansMono-Bold.ttf"));
|
|
add(include_bytes!("../../assets/fonts/DejaVuSansMono-Oblique.ttf"));
|
|
add(include_bytes!("../../assets/fonts/DejaVuSansMono-BoldOblique.ttf"));
|
|
}
|
|
|
|
/// Search for fonts in the linux system font directories.
|
|
#[cfg(all(unix, not(target_os = "macos")))]
|
|
fn search_system(&mut self) {
|
|
self.search_dir("/usr/share/fonts");
|
|
self.search_dir("/usr/local/share/fonts");
|
|
|
|
if let Some(dir) = dirs::font_dir() {
|
|
self.search_dir(dir);
|
|
}
|
|
}
|
|
|
|
/// Search for fonts in the macOS system font directories.
|
|
#[cfg(target_os = "macos")]
|
|
fn search_system(&mut self) {
|
|
self.search_dir("/Library/Fonts");
|
|
self.search_dir("/Network/Library/Fonts");
|
|
self.search_dir("/System/Library/Fonts");
|
|
|
|
if let Some(dir) = dirs::font_dir() {
|
|
self.search_dir(dir);
|
|
}
|
|
}
|
|
|
|
/// Search for fonts in the Windows system font directories.
|
|
#[cfg(windows)]
|
|
fn search_system(&mut self) {
|
|
let windir =
|
|
std::env::var("WINDIR").unwrap_or_else(|_| "C:\\Windows".to_string());
|
|
|
|
self.search_dir(Path::new(&windir).join("Fonts"));
|
|
|
|
if let Some(roaming) = dirs::config_dir() {
|
|
self.search_dir(roaming.join("Microsoft\\Windows\\Fonts"));
|
|
}
|
|
|
|
if let Some(local) = dirs::cache_dir() {
|
|
self.search_dir(local.join("Microsoft\\Windows\\Fonts"));
|
|
}
|
|
}
|
|
|
|
/// Search for all fonts in a directory recursively.
|
|
fn search_dir(&mut self, path: impl AsRef<Path>) {
|
|
for entry in WalkDir::new(path)
|
|
.follow_links(true)
|
|
.sort_by(|a, b| a.file_name().cmp(b.file_name()))
|
|
.into_iter()
|
|
.filter_map(|e| e.ok())
|
|
{
|
|
let path = entry.path();
|
|
if matches!(
|
|
path.extension().and_then(|s| s.to_str()),
|
|
Some("ttf" | "otf" | "TTF" | "OTF" | "ttc" | "otc" | "TTC" | "OTC"),
|
|
) {
|
|
self.search_file(path);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Index the fonts in the file at the given path.
|
|
fn search_file(&mut self, path: impl AsRef<Path>) {
|
|
let path = path.as_ref();
|
|
if let Ok(file) = File::open(path) {
|
|
if let Ok(mmap) = unsafe { Mmap::map(&file) } {
|
|
for (i, info) in FontInfo::iter(&mmap).enumerate() {
|
|
self.book.push(info);
|
|
self.fonts.push(FontSlot {
|
|
path: path.into(),
|
|
index: i as u32,
|
|
font: OnceCell::new(),
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|