command line interface and updates for npm

lib/cli.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+
+var sys = require("sys");
+var parser = require("./jsonlint").parser;
+
+function parse (source) {
+  try {
+    sys.puts(JSON.stringify(parser.parse(source),null,"  "));
+  } catch (e) {
+    sys.puts(e);
+    process.exit(1);
+  }
+}
+
+function main (args) {
+  var source = '';
+  if (args[1]) {
+    source = require('fs').readFileSync(require('path').join(process.cwd(), args[1]), "utf8");
+    parse(source);
+  } else {
+    var stdin = process.openStdin();
+    stdin.setEncoding('utf8');
+
+    stdin.on('data', function (chunk) {
+      source += chunk.toString('utf8');
+    });
+    stdin.on('end', function () {
+      parse(source);
+    });
+  }
+}
+
+main(process.argv.slice(1));