Add 'rojo doc' command

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased Changes for 0.6.x
 * Added `--watch` argument to `rojo build`. ([#284](https://github.com/rojo-rbx/rojo/pull/284))
 * Added dark theme support to plugin. ([#241](https://github.com/rojo-rbx/rojo/issues/241))
+* Added the `rojo doc` command, which opens Rojo's documentation in your browser.
 * Simplified filesystem access code dramatically.
 * Improved error reporting and logging across the board.
     * Log messages have a less noisy prefix.

Cargo.lock

@@ -1073,6 +1073,14 @@ name = "opaque-debug"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "opener"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "openssl"
 version = "0.10.28"
@@ -1681,6 +1689,7 @@ dependencies = [
  "maplit 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "memofs 0.1.0",
  "notify 4.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "opener 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rbx_binary 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2647,6 +2656,7 @@ dependencies = [
 "checksum num_cpus 1.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "46203554f085ff89c235cd12f7075f3233af9b11ed7c9e16dfe2560d03313ce6"
 "checksum oorandom 11.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ebcec7c9c2a95cacc7cd0ecb89d8a8454eca13906f6deb55258ffff0adeb9405"
 "checksum opaque-debug 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
+"checksum opener 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "13117407ca9d0caf3a0e74f97b490a7e64c0ae3aa90a8b7085544d0c37b6f3ae"
 "checksum openssl 0.10.28 (registry+https://github.com/rust-lang/crates.io-index)" = "973293749822d7dd6370d6da1e523b0d1db19f06c459134c658b2a4261378b52"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 "checksum openssl-sys 0.9.54 (registry+https://github.com/rust-lang/crates.io-index)" = "1024c0a59774200a555087a6da3f253a9095a5f344e353b212ac4c8b8e450986"

Cargo.toml

@@ -62,8 +62,8 @@ harness = false
 
 [dependencies]
 memofs = { version = "0.1.0", path = "memofs" }
-backtrace = "0.3"
 
+backtrace = "0.3"
 crossbeam-channel = "0.4.0"
 csv = "1.1.1"
 env_logger = "0.7.1"
@@ -76,6 +76,7 @@ lazy_static = "1.4.0"
 log = "0.4.8"
 maplit = "1.0.1"
 notify = "4.0.14"
+opener = "0.4.1"
 rbx_binary = "0.5.0"
 rbx_dom_weak = "1.10.1"
 rbx_reflection = "3.3.408"

src/bin.rs

@@ -11,6 +11,7 @@ fn run(subcommand: Subcommand) -> Result<(), Box<dyn Error>> {
         Subcommand::Serve(serve_options) => cli::serve(serve_options)?,
         Subcommand::Build(build_options) => cli::build(build_options)?,
         Subcommand::Upload(upload_options) => cli::upload(upload_options)?,
+        Subcommand::Doc => cli::doc()?,
     }
 
     Ok(())

src/cli/doc.rs

@@ -0,0 +1,26 @@
+use opener::{open, OpenError};
+use snafu::Snafu;
+
+#[derive(Debug, Snafu)]
+pub struct DocError(Error);
+
+#[derive(Debug, Snafu)]
+enum Error {
+    Open { source: OpenError },
+}
+
+impl From<OpenError> for Error {
+    fn from(source: OpenError) -> Self {
+        Error::Open { source }
+    }
+}
+
+pub fn doc() -> Result<(), DocError> {
+    doc_inner()?;
+    Ok(())
+}
+
+fn doc_inner() -> Result<(), Error> {
+    open("https://rojo.space/docs")?;
+    Ok(())
+}

src/cli/mod.rs

@@ -1,6 +1,7 @@
 //! Defines Rojo's CLI through structopt types.
 
 mod build;
+mod doc;
 mod init;
 mod serve;
 mod upload;
@@ -17,6 +18,7 @@ use std::{
 use structopt::StructOpt;
 
 pub use self::build::*;
+pub use self::doc::*;
 pub use self::init::*;
 pub use self::serve::*;
 pub use self::upload::*;
@@ -48,6 +50,9 @@ pub enum Subcommand {
 
     /// Generates a place or model file out of the project and uploads it to Roblox.
     Upload(UploadCommand),
+
+    /// Open Rojo's documentation in your browser.
+    Doc,
 }
 
 /// Initializes a new Rojo project.