Add first pass functionality

.jshintignore

@@ -0,0 +1 @@
+node_modules

index.js

@@ -1,7 +1,20 @@
 'use strict';
 
-module.exports = function postcssCssstats(options) {
-  options = options || {};
+var _ = require('lodash');
+var postcss = require('postcss');
+var cssstats = require('cssstats');
 
-  return true;
-};
+module.exports = postcss.plugin('cssstats', function(options, callback) {
+  if (_.isFunction(options)) {
+    callback = options;
+    options = {};
+  } else {
+    options = options || {};
+    callback = callback || _.noop;
+  }
+
+  return function(css, postcssResult) {
+    // XXX TODO: cssstats should also be able to handle an AST
+    callback(cssstats(css.toString()));
+  };
+});

package.json

@@ -15,15 +15,25 @@
     "url": "https://github.com/cssstats/postcss-cssstats.git"
   },
   "keywords": [
-
+    "cssstats",
+    "css",
+    "stats",
+    "statistics",
+    "postcss",
+    "postcss-plugin"
   ],
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/cssstats/postcss-cssstats/issues"
   },
   "homepage": "https://github.com/cssstats/postcss-cssstats",
-  "dependencies": {},
+  "dependencies": {
+    "cssstats": "^1.5.1",
+    "lodash": "^3.8.0",
+    "postcss": "^4.1.9"
+  },
   "devDependencies": {
+    "is-present": "0.0.1",
     "mocha": "*"
   }
 }

test/fixtures/basic.css

@@ -0,0 +1,7 @@
+.foo {
+  color: tomato;
+}
+
+.bar .baz {
+  color: hotpink;
+}

test/test.js

@@ -1,11 +1,25 @@
 'use strict';
 
+var fs = require('fs');
 var assert = require('assert');
+var postcss = require('postcss');
+var isPresent = require('is-present');
 var postcssCssstats = require('..');
 
 describe('postcss-cssstats', function() {
 
-  it('should do something awesome', function() {
-    assert.equal(postcssCssstats(), true);
+  it('should return a stats object', function(done) {
+    postcss()
+      .use(postcssCssstats({}, function(stats) {
+        assert.ok(isPresent(stats));
+      }))
+      .process(fixture('basic'))
+      .then(function() {
+        done();
+      });
   });
 });
+
+function fixture(name) {
+  return fs.readFileSync('test/fixtures/' + name + '.css', 'utf8').toString();
+}