version 1.1.0

lib/cli.js

@@ -1,11 +1,45 @@
 #!/usr/bin/env node
 
 var sys = require("sys");
+var fs = require("fs");
 var parser = require("./jsonlint").parser;
+var options = require("nomnom")
+  .scriptName("jsonlint")
+  .opts({
+    file: {
+      position: 0,
+      help: "file to parse; otherwise uses stdin"
+    },
+    version: {
+      string: '-v, --version',
+      help: 'print version and exit',
+      callback: function() {
+        return JSON.parse(fs.readFileSync(__dirname + "/../package.json", "utf8")).version;
+      }
+    },
+    sort : {
+      string: '-s, --sort-keys',
+      help: 'sort object keys'
+    },
+    inplace : {
+      string: '-i, --in-place',
+      help: 'overwrite the file'
+    },
+    indent : {
+      string: '-t CHAR, --indent CHAR',
+      default: "  ",
+      help: 'character(s) to use for indentation'
+    }
+  })
+  .parseArgs();
+
 
 function parse (source) {
   try {
-    sys.puts(JSON.stringify(parser.parse(source),null,"  "));
+    var parsed = options.sort ?
+                    sortObject(parser.parse(source)) :
+                    parser.parse(source); 
+    return JSON.stringify(parsed,null,options.indent);
   } catch (e) {
     sys.puts(e);
     process.exit(1);
@@ -14,9 +48,14 @@ function parse (source) {
 
 function main (args) {
   var source = '';
-  if (args[1]) {
-    source = require('fs').readFileSync(require('path').join(process.cwd(), args[1]), "utf8");
-    parse(source);
+  if (options.file) {
+    var path = require('path').join(process.cwd(), options.file); 
+    source = fs.readFileSync(path, "utf8");
+    if (options.inplace) {
+      fs.writeSync(fs.openSync(path,'w+'), parse(source), 0, "utf8");
+    } else {
+      sys.puts(parse(source));
+    }
   } else {
     var stdin = process.openStdin();
     stdin.setEncoding('utf8');
@@ -25,9 +64,30 @@ function main (args) {
       source += chunk.toString('utf8');
     });
     stdin.on('end', function () {
-      parse(source);
+      sys.puts(parse(source));
     });
   }
 }
 
+// from http://stackoverflow.com/questions/1359761/sorting-a-json-object-in-javascript
+function sortObject(o) {
+  if (Object.prototype.toString.call(o) != '[object Object]')
+    return o;
+  var sorted = {},
+  key, a = [];
+
+  for (key in o) {
+    if (o.hasOwnProperty(key)) {
+      a.push(key);
+    }
+  }
+
+  a.sort();
+
+  for (key = 0; key < a.length; key++) {
+    sorted[a[key]] = sortObject(o[a[key]]);
+  }
+  return sorted;
+}
+
 main(process.argv.slice(1));

package.json

@@ -8,7 +8,7 @@
     "lint",
     "jsonlint"
   ],
-  "version": "1.0.1",
+  "version": "1.1.0",
   "preferGlobal": true,
   "repository": {
     "type": "git",
@@ -24,7 +24,9 @@
   "engines": {
     "node": "0.4 || 0.5"
   },
-  "dependencies": {},
+  "dependencies": {
+    "nomnom": ">= 0.4.3"
+  },
   "devDependencies": {
     "test": "*",
     "jison": "*",