add a binary for shenlong that will expose some of shenlong's functionality.

Currently it can detect the current project, run a command from the current project's root, and print the absolute path of the project.

Cargo.lock

@@ -290,6 +290,10 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "scouter"
+version = "0.0.1"
+
 [[package]]
 name = "shenlong"
 version = "0.0.1"
@@ -297,6 +301,7 @@ dependencies = [
  "c_str_macro 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scouter 0.0.1",
  "shenlong-sys 0.0.1",
 ]
 

Cargo.toml

@@ -10,6 +10,7 @@ log = "0.4.6"
 env_logger = "0.6.0"
 shenlong-sys = { path = "shenlong-sys", version = "0.0.1" }
 c_str_macro = "1.0.2"
+scouter = { path = "scouter", version = "0.0.1" }
 
 #[build-dependencies]
 #cc = "1.0.28"

src/main.rs

@@ -0,0 +1,29 @@
+use std::env;
+use std::path::Path;
+use scouter::Scouter;
+
+use std::process::Command;
+
+fn main() {
+    let path = Path::new(".").canonicalize().expect("failed to canonicalize path");
+    let mut scouter = Scouter::new(path);
+    let project = scouter.next().expect("No supported project found");
+    
+    let mut args = env::args();
+    args.next();
+    match args.next().as_ref().map(|arg| arg.as_str()) {
+        Some("info") => println!("{:?}", project),
+        Some("where") => println!("{}", project.path().display()),
+        Some("run") => {
+            Command::new(args.next().unwrap())
+                .args(args)
+                .current_dir(project.path())
+                .spawn()
+                .expect("command failed to start")
+                .wait()
+                .expect("failed to wait on child");
+        },
+        Some(_) => println!("unrecognized command"),
+        None => println!("{:?}", project)
+    }
+}