Added the --config option.

Closes #1.

lib/cli.js

@@ -1,13 +1,15 @@
 
 var pkg = require("../package");
 var program = require("commander");
+var path = require("path");
 
 program
   .version(pkg.version)
   .option("-p, --port <n>", "the port to listen to", parseInt)
   .option("--parent-port <n>", "the parent port to connect to", parseInt)
   .option("--parent-host <s>", "the parent host to connect to")
   .option("--parent-prefix <s>", "the prefix to use in the parent broker")
+  .option("-c, --config <c>", "the config file to use (override every other options)")
   .option("-v, --verbose", "equal to DEBUG=mosca")
   .option("--very-verbose", "equal to DEBUG=mosca,ascoltatori:*");
 
@@ -51,5 +53,9 @@ module.exports = function cli(argv) {
 
   opts.backend.prefix = program.parentPrefix;
 
+  if(program.config) {
+    opts = require(path.join(process.cwd(), program.config));
+  }
+
   return new Server(opts);
 };

test/cli_spec.js

@@ -108,4 +108,14 @@ describe(mosca.cli, function () {
       done();
     });
   });
+
+  it("should support a config option", function (done) {
+    args.push("--config");
+    args.push("test/sample_config.js");
+    server = mosca.cli(args);
+    server.on("ready", function () {
+      expect(server.opts).to.eql(require("./sample_config"));
+      done();
+    });
+  });
 });

test/sample_config.js

@@ -0,0 +1,8 @@
+
+module.exports = {
+  port: 2883,
+  backend: {
+    type: "mqtt",
+    port: 3833
+  }
+};