feat: Add --open to gluon doc

doc/Cargo.toml

@@ -11,18 +11,19 @@ repository = "https://github.com/gluon-lang/gluon"
 documentation = "https://docs.rs/gluon"
 
 [dependencies]
-log = "0.4"
+clap = "2.22.0"
 env_logger = "0.6"
-walkdir = "1"
 failure = { version = "0.1", features = ["backtrace"] }
 handlebars = "1.0.0-beta.4"
-clap = "2.22.0"
 itertools = "0.8"
-structopt = "0.2"
+lazy_static = "1"
+log = "0.4"
+opener = "0.3"
 pretty = "0.5"
 pulldown-cmark = "0.2"
 regex = "1"
-lazy_static = "1"
+structopt = "0.2"
+walkdir = "1"
 
 serde = "1.0.0"
 serde_derive = "1.0.0"

doc/src/lib.rs

@@ -549,6 +549,9 @@ const LONG_VERSION: &str = concat!(crate_version!(), "\n", "commit: ", env!("GIT
     raw(long_version = "LONG_VERSION")
 )]
 pub struct Opt {
+    #[structopt(long = "open")]
+    #[structopt(help = "Opens the documentation after it has been generated")]
+    pub open: bool,
     #[structopt(help = "Documents the file or directory")]
     pub input: String,
     #[structopt(help = "Outputs the documentation to this directory")]

doc/src/main.rs

@@ -1,14 +1,17 @@
 extern crate env_logger;
 extern crate failure;
+extern crate opener;
 extern crate structopt;
 
 extern crate gluon;
 extern crate gluon_doc;
 
-use gluon_doc::Opt;
+use std::path::Path;
 
 use structopt::StructOpt;
 
+use gluon_doc::Opt;
+
 fn main() {
     if let Err(err) = main_() {
         eprintln!("{}", err);
@@ -19,6 +22,14 @@ fn main_() -> Result<(), failure::Error> {
     env_logger::init();
 
     let opt = Opt::from_args();
+
     gluon_doc::generate_for_path(&gluon::new_vm(), &opt.input, &opt.output)?;
+
+    if opt.open {
+        let path = Path::new(&opt.output).join(&opt.input).join("index.html");
+        eprintln!("Opening {}", path.display());
+        opener::open(path)?;
+    }
+
     Ok(())
 }