114 lines
3.1 KiB
Rust
114 lines
3.1 KiB
Rust
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extern crate notify;
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extern crate time;
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extern crate crossbeam;
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use std::path::Path;
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use std::error::Error;
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use self::notify::Watcher;
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use std::time::Duration;
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use std::sync::mpsc::channel;
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use clap::ArgMatches;
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use mdbook::MDBook;
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use {get_book_dir, open};
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// Watch command implementation
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pub fn watch(args: &ArgMatches) -> Result<(), Box<Error>> {
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let book_dir = get_book_dir(args);
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let book = MDBook::new(&book_dir).read_config()?;
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let mut book = match args.value_of("dest-dir") {
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Some(dest_dir) => book.with_destination(dest_dir),
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None => book,
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};
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if args.is_present("curly-quotes") {
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book = book.with_curly_quotes(true);
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}
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if args.is_present("open") {
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book.build()?;
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if let Some(d) = book.get_destination() {
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open(d.join("index.html"));
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}
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}
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trigger_on_change(&mut book, |path, book| {
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println!("File changed: {:?}\nBuilding book...\n", path);
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if let Err(e) = book.build() {
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println!("Error while building: {:?}", e);
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}
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println!("");
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});
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Ok(())
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}
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// Calls the closure when a book source file is changed. This is blocking!
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pub fn trigger_on_change<F>(book: &mut MDBook, closure: F) -> ()
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where F: Fn(&Path, &mut MDBook) -> ()
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{
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use self::notify::RecursiveMode::*;
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use self::notify::DebouncedEvent::*;
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// Create a channel to receive the events.
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let (tx, rx) = channel();
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let mut watcher = match notify::watcher(tx, Duration::from_secs(1)) {
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Ok(w) => w,
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Err(e) => {
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println!("Error while trying to watch the files:\n\n\t{:?}", e);
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::std::process::exit(0);
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},
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};
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// Add the source directory to the watcher
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if let Err(e) = watcher.watch(book.get_source(), Recursive) {
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println!("Error while watching {:?}:\n {:?}", book.get_source(), e);
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::std::process::exit(0);
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};
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// Add the theme directory to the watcher
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if let Some(t) = book.get_theme_path() {
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watcher.watch(t, Recursive).unwrap_or_default();
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}
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// Add the book.{json,toml} file to the watcher if it exists, because it's not
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// located in the source directory
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if watcher
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.watch(book.get_root().join("book.json"), NonRecursive)
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.is_err() {
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// do nothing if book.json is not found
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}
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if watcher
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.watch(book.get_root().join("book.toml"), NonRecursive)
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.is_err() {
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// do nothing if book.toml is not found
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}
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println!("\nListening for changes...\n");
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loop {
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match rx.recv() {
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Ok(event) => {
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match event {
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NoticeWrite(path) |
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NoticeRemove(path) |
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Create(path) |
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Write(path) |
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Remove(path) |
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Rename(_, path) => {
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closure(&path, book);
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},
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_ => {},
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}
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},
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Err(e) => {
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println!("An error occured: {:?}", e);
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},
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}
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}
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}
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