Initial commit

crates/wasm-bindgen-cli/src/main.rs

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+extern crate wasm_bindgen;
+#[macro_use]
+extern crate serde_derive;
+extern crate docopt;
+
+use std::path::PathBuf;
+
+use docopt::Docopt;
+use wasm_bindgen::Bindgen;
+
+const USAGE: &'static str = "
+Generating JS bindings for a wasm file
+
+Usage:
+    wasm-bindgen [options] <input>
+
+Options:
+    -h --help               Show this screen.
+    --output-js FILE        Output JS file
+    --output-wasm FILE      Output WASM file
+";
+
+#[derive(Debug, Deserialize)]
+struct Args {
+    flag_output_js: Option<PathBuf>,
+    flag_output_wasm: Option<PathBuf>,
+    arg_input: PathBuf,
+}
+
+fn main() {
+    let args: Args = Docopt::new(USAGE)
+        .and_then(|d| d.deserialize())
+        .unwrap_or_else(|e| e.exit());
+
+    let mut b = Bindgen::new();
+    b.input_path(&args.arg_input);
+    let ret = b.generate().expect("failed to generate bindings");
+    if let Some(ref js) = args.flag_output_js {
+        ret.write_js_to(js).expect("failed to write JS output file");
+    }
+    if let Some(ref wasm) = args.flag_output_wasm {
+        ret.write_wasm_to(wasm).expect("failed to write wasm output file");
+    }
+}