Add a CLI option to open a web browser

Cargo.toml

@@ -23,6 +23,7 @@ pulldown-cmark = "0.0.8"
 log = "0.3"
 env_logger = "0.3"
 toml = { version = "0.2", features = ["serde"] }
+open = "1.1"
 
 # Watch feature
 notify = { version = "2.5.5", optional = true }

book-example/src/cli/build.md

@@ -21,6 +21,11 @@ current working directory.
 mdbook build path/to/book
 ```
 
+#### --open
+
+When you use the `--open` (`-o`) option, mdbook will open the rendered book in
+your default web browser after building it.
+
 -------------------
 
 ***note:*** *make sure to run the build command in the root directory and not in the source directory*

book-example/src/cli/serve.md

@@ -26,6 +26,11 @@ mdbook server path/to/book -p 8000 -i 127.0.0.1 -a 192.168.1.100
 
 If you were to want live reloading for this you would need to proxy the websocket calls through nginx as well from `192.168.1.100:<WS_PORT>` to `127.0.0.1:<WS_PORT>`. The `-w` flag allows for the websocket port to be configured.
 
+#### --open
+
+When you use the `--open` (`-o`) option, mdbook will open the book in your
+your default web browser after starting the server.
+
 -----
 
 ***note:*** *the `serve` command has not gotten a lot of testing yet, there could be some rough edges. If you discover a problem, please report it [on Github](https://github.com/azerupi/mdBook/issues)*

book-example/src/cli/watch.md

@@ -12,6 +12,10 @@ current working directory.
 mdbook watch path/to/book
 ```
 
+#### --open
+
+When you use the `--open` (`-o`) option, mdbook will open the rendered book in
+your default web browser.
 
 -----
 

src/bin/mdbook.rs

@@ -5,6 +5,7 @@ extern crate clap;
 #[macro_use]
 extern crate log;
 extern crate env_logger;
+extern crate open;
 
 // Dependencies for the Watch feature
 #[cfg(feature = "watch")]
@@ -24,6 +25,7 @@ extern crate ws;
 
 use std::env;
 use std::error::Error;
+use std::ffi::OsStr;
 use std::io::{self, Write};
 use std::path::{Path, PathBuf};
 
@@ -59,9 +61,11 @@ fn main() {
                         .arg_from_usage("--force 'skip confirmation prompts'"))
                     .subcommand(SubCommand::with_name("build")
                         .about("Build the book from the markdown files")
+                        .arg_from_usage("-o, --open 'Open the compiled book in a web browser'")
                         .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("-o, --open 'Open the compiled book in a web browser'")
                         .arg_from_usage("[dir] 'A directory for your book{n}(Defaults to Current Directory when ommitted)'"))
                     .subcommand(SubCommand::with_name("serve")
                         .about("Serve the book at http://localhost:3000. Rebuild and reload on change.")
@@ -69,7 +73,8 @@ fn main() {
                         .arg_from_usage("-p, --port=[port] 'Use another port{n}(Defaults to 3000)'")
                         .arg_from_usage("-w, --websocket-port=[ws-port] 'Use another port for the websocket connection (livereload){n}(Defaults to 3001)'")
                         .arg_from_usage("-i, --interface=[interface] 'Interface to listen on{n}(Defaults to localhost)'")
-                        .arg_from_usage("-a, --address=[address] 'Address that the browser can reach the websocket server from{n}(Defaults to the interface addres)'"))
+                        .arg_from_usage("-a, --address=[address] 'Address that the browser can reach the websocket server from{n}(Defaults to the interface address)'")
+                        .arg_from_usage("-o, --open 'Open the book server in a web browser'"))
                     .subcommand(SubCommand::with_name("test")
                         .about("Test that code samples compile"))
                     .get_matches();
@@ -163,6 +168,10 @@ fn build(args: &ArgMatches) -> Result<(), Box<Error>> {
 
     try!(book.build());
 
+    if args.is_present("open") {
+        open(book.get_dest().join("index.html"));
+    }
+
     Ok(())
 }
 
@@ -173,6 +182,11 @@ fn watch(args: &ArgMatches) -> Result<(), Box<Error>> {
     let book_dir = get_book_dir(args);
     let mut book = MDBook::new(&book_dir).read_config();
 
+    if args.is_present("open") {
+        try!(book.build());
+        open(book.get_dest().join("index.html"));
+    }
+
     trigger_on_change(&mut book, |event, book| {
         if let Some(path) = event.path {
             println!("File changed: {:?}\nBuilding book...\n", path);
@@ -199,6 +213,7 @@ fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
     let ws_port = args.value_of("ws-port").unwrap_or("3001");
     let interface = args.value_of("interface").unwrap_or("localhost");
     let public_address = args.value_of("address").unwrap_or(interface);
+    let open_browser = args.is_present("open");
 
     let address = format!("{}:{}", interface, port);
     let ws_address = format!("{}:{}", interface, ws_port);
@@ -239,6 +254,10 @@ fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
 
     println!("\nServing on {}", address);
 
+    if open_browser {
+        open(format!("http://{}", address));
+    }
+
     trigger_on_change(&mut book, move |event, book| {
         if let Some(path) = event.path {
             println!("File changed: {:?}\nBuilding book...\n", path);
@@ -278,6 +297,12 @@ fn get_book_dir(args: &ArgMatches) -> PathBuf {
     }
 }
 
+fn open<P: AsRef<OsStr>>(path: P) {
+    if let Err(e) = open::that(path) {
+        println!("Error opening web browser: {}", e);
+    }
+}
+
 
 // Calls the closure when a book source file is changed. This is blocking!
 #[cfg(feature = "watch")]