#[macro_use] extern crate mdbook; #[macro_use] extern crate clap; extern crate crossbeam; // Dependencies for the Watch feature #[cfg(feature = "watch")] extern crate notify; #[cfg(feature = "watch")] extern crate time; use std::env; use std::error::Error; use std::io::{self, Write}; use std::path::{Path, PathBuf}; use clap::{App, ArgMatches, SubCommand}; // Uses for the Watch feature #[cfg(feature = "watch")] use notify::Watcher; #[cfg(feature = "watch")] use std::sync::mpsc::channel; use mdbook::MDBook; const NAME: &'static str = "mdbook"; fn main() { // Create a list of valid arguments and sub-commands let matches = App::new(NAME) .about("Create a book in form of a static website from markdown files") .author("Mathieu David ") // Get the version from our Cargo.toml using clap's crate_version!() macro .version(&*format!("v{}", crate_version!())) .subcommand_required(true) .after_help("For more information about a specific command, try `mdbook --help`") .subcommand(SubCommand::with_name("init") .about("Create boilerplate structure and files in the directory") // the {n} denotes a newline which will properly aligned in all help messages .arg_from_usage("[dir] 'A directory for your book{n}(Defaults to Current Directory when ommitted)'") .arg_from_usage("--theme 'Copies the default theme into your source folder'") .arg_from_usage("--force 'skip confirmation prompts'")) .subcommand(SubCommand::with_name("build") .about("Build the book from the markdown files") .arg_from_usage("[dir] 'A directory for your book{n}(Defaults to Current Directory when ommitted)'")) .subcommand(SubCommand::with_name("watch") .about("Watch the files for changes") .arg_from_usage("[dir] 'A directory for your book{n}(Defaults to Current Directory when ommitted)'")) .subcommand(SubCommand::with_name("test") .about("Test that code samples compile")) .get_matches(); // Check which subcomamnd the user ran... let res = match matches.subcommand() { ("init", Some(sub_matches)) => init(sub_matches), ("build", Some(sub_matches)) => build(sub_matches), #[cfg(feature = "watch")] ("watch", Some(sub_matches)) => watch(sub_matches), ("test", Some(sub_matches)) => test(sub_matches), (_, _) => unreachable!() }; if let Err(e) = res { writeln!(&mut io::stderr(), "An error occured:\n{}", e).ok(); } } // Simple function that user comfirmation fn confirm() -> bool { io::stdout().flush().unwrap(); let mut s = String::new(); io::stdin().read_line(&mut s).ok(); match &*s.trim() { "Y" | "y" | "yes" | "Yes" => true, _ => false } } // Init command implementation fn init(args: &ArgMatches) -> Result<(), Box> { let book_dir = get_book_dir(args); let mut book = MDBook::new(&book_dir); // Call the function that does the initialization try!(book.init()); // If flag `--theme` is present, copy theme to src if args.is_present("theme") { // Skip this if `--force` is present if !args.is_present("force") { // Print warning print!("\nCopying the default theme to {:?}", book.get_src()); println!("could potentially overwrite files already present in that directory."); print!("\nAre you sure you want to continue? (y/n) "); // Read answer from user and exit if it's not 'yes' if !confirm() { println!("\nSkipping...\n"); println!("All done, no errors..."); ::std::process::exit(0); } } // Call the function that copies the theme try!(book.copy_theme()); println!("\nTheme copied."); } // Because of `src/book/mdbook.rs#L37-L39`, `dest` will always start with `root` let is_dest_inside_root = book.get_dest().starts_with(book.get_root()); if !args.is_present("force") && is_dest_inside_root { println!("\nDo you want a .gitignore to be created? (y/n)"); if confirm() { book.create_gitignore(); println!("\n.gitignore created."); } } println!("\nAll done, no errors..."); Ok(()) } // Build command implementation fn build(args: &ArgMatches) -> Result<(), Box> { let book_dir = get_book_dir(args); let mut book = MDBook::new(&book_dir).read_config(); try!(book.build()); Ok(()) } // Watch command implementation #[cfg(feature = "watch")] fn watch(args: &ArgMatches) -> Result<(), Box> { let book_dir = get_book_dir(args); let book = MDBook::new(&book_dir).read_config(); // Create a channel to receive the events. let (tx, rx) = channel(); let w: Result = notify::Watcher::new(tx); match w { Ok(mut watcher) => { // Add the source directory to the watcher if let Err(e) = watcher.watch(book.get_src()) { println!("Error while watching {:?}:\n {:?}", book.get_src(), e); ::std::process::exit(0); }; // Add the book.json file to the watcher if it exists, because it's not // located in the source directory if let Err(_) = watcher.watch(book_dir.join("book.json")) { // do nothing if book.json is not found } let previous_time = time::get_time().sec; crossbeam::scope(|scope| { loop { match rx.recv() { Ok(event) => { // Skip the event if an event has already been issued in the last second if time::get_time().sec - previous_time < 1 { continue } if let Some(path) = event.path { // Trigger the build process in a new thread (to keep receiving events) scope.spawn(move || { println!("File changed: {:?}\nBuilding book...\n", path); match build(args) { Err(e) => println!("Error while building: {:?}", e), _ => {} } println!(""); }); } else { continue; } }, Err(e) => { println!("An error occured: {:?}", e); } } } }); }, Err(e) => { println!("Error while trying to watch the files:\n\n\t{:?}", e); ::std::process::exit(0); } } Ok(()) } fn test(args: &ArgMatches) -> Result<(), Box> { let book_dir = get_book_dir(args); let mut book = MDBook::new(&book_dir).read_config(); try!(book.test()); Ok(()) } fn get_book_dir(args: &ArgMatches) -> PathBuf { if let Some(dir) = args.value_of("dir") { // Check if path is relative from current dir, or absolute... let p = Path::new(dir); if p.is_relative() { env::current_dir().unwrap().join(dir) } else { p.to_path_buf() } } else { env::current_dir().unwrap() } }