Separate interface and base url for gutenberg serve (#223)

Separate interface and base_url for serve

You can now have a different base_url and listening interface.
The `gutenberg serve` cmd now accepts `-u`/`--base-url`, but it defaults to `127.0.0.1`.

docs/content/documentation/getting-started/cli-usage.md

@@ -46,11 +46,14 @@ $ gutenberg build --output-dir $DOCUMENT_ROOT
 This will build and serve the site using a local server. You can also specify
 the interface/port combination to use if you want something different than the default (`127.0.0.1:1111`).
 
+You can also specify different addresses for the interface and base_url using `-u`/`--base-url`.
+
 ```bash
 $ gutenberg serve
 $ gutenberg serve --port 2000
 $ gutenberg serve --interface 0.0.0.0 
 $ gutenberg serve --interface 0.0.0.0 --port 2000
+$ gutenberg serve --interface 0.0.0.0 --base-url 127.0.0.1
 $ gutenberg serve --interface 0.0.0.0 --port 2000 --output-dir www/public
 ```
 

src/cli.rs

@@ -54,6 +54,12 @@ pub fn build_cli() -> App<'static, 'static> {
                         .default_value("public")
                         .takes_value(true)
                         .help("Outputs the generated site in the given path"),
+                    Arg::with_name("base_url")
+                        .short("u")
+                        .long("base-url")
+                        .default_value("127.0.0.1")
+                        .takes_value(true)
+                        .help("Changes the base_url"),
                 ]),
         ])
 }

src/cmd/serve.rs

@@ -80,16 +80,18 @@ fn rebuild_done_handling(broadcaster: &Sender, res: Result<()>, reload_path: &st
     }
 }
 
-fn create_new_site(interface: &str, port: &str, output_dir: &str, config_file: &str) -> Result<(Site, String)> {
+fn create_new_site(interface: &str, port: &str, output_dir: &str, base_url: &str, config_file: &str) -> Result<(Site, String)> {
     let mut site = Site::new(env::current_dir().unwrap(), config_file)?;
 
+    let base_address = format!("{}:{}", base_url, port);
     let address = format!("{}:{}", interface, port);
-    // Override the base url so links work in localhost
+
     site.config.base_url = if site.config.base_url.ends_with('/') {
-        format!("http://{}/", address)
+        format!("http://{}/", base_address)
     } else {
-        format!("http://{}", address)
+        format!("http://{}", base_address)
     };
+
     site.set_output_path(output_dir);
     site.load()?;
     site.enable_live_reload();
@@ -99,9 +101,9 @@ fn create_new_site(interface: &str, port: &str, output_dir: &str, config_file: &
     Ok((site, address))
 }
 
-pub fn serve(interface: &str, port: &str, output_dir: &str, config_file: &str) -> Result<()> {
+pub fn serve(interface: &str, port: &str, output_dir: &str, base_url: &str, config_file: &str) -> Result<()> {
     let start = Instant::now();
-    let (mut site, address) = create_new_site(interface, port, output_dir, config_file)?;
+    let (mut site, address) = create_new_site(interface, port, output_dir, base_url, config_file)?;
     console::report_elapsed_time(start);
 
     // Setup watchers
@@ -214,7 +216,7 @@ pub fn serve(interface: &str, port: &str, output_dir: &str, config_file: &str) -
                             },
                             (ChangeKind::Config, _) => {
                                 console::info(&format!("-> Config changed. The whole site will be reloaded. The browser needs to be refreshed to make the changes visible."));
-                                site = create_new_site(interface, port, output_dir, config_file).unwrap().0;
+                                site = create_new_site(interface, port, output_dir, base_url, config_file).unwrap().0;
                             }
                         };
                         console::report_elapsed_time(start);

src/main.rs

@@ -57,8 +57,9 @@ fn main() {
             let interface = matches.value_of("interface").unwrap_or("127.0.0.1");
             let port = matches.value_of("port").unwrap_or("1111");
             let output_dir = matches.value_of("output_dir").unwrap();
+            let base_url = matches.value_of("base_url").unwrap();
             console::info("Building site...");
-            match cmd::serve(interface, port, output_dir, config_file) {
+            match cmd::serve(interface, port, output_dir, base_url, config_file) {
                 Ok(()) => (),
                 Err(e) => {
                     console::unravel_errors("", &e);