From 408eafca34565176bfc52773ed13321a5bf16b16 Mon Sep 17 00:00:00 2001
From: angryThom <thomas@angrybytes.com>
Date: Tue, 31 Mar 2015 09:54:36 +0200
Subject: [PATCH] Added a composer json reader

---
 .../ProjectVersioner/Reader/ComposerJson.php  | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/Naneau/ProjectVersioner/Reader/ComposerJson.php

diff --git a/src/Naneau/ProjectVersioner/Reader/ComposerJson.php b/src/Naneau/ProjectVersioner/Reader/ComposerJson.php
new file mode 100644
index 0000000..f3d0581
--- /dev/null
+++ b/src/Naneau/ProjectVersioner/Reader/ComposerJson.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * ComposerJson.php
+ *
+ * @package         ProjectVersioner
+ * @subpackage      Reader
+ */
+
+namespace Naneau\ProjectVersioner\Reader;
+
+use Naneau\ProjectVersioner\ReaderInterface;
+
+use \RuntimeException;
+use \stdClass;
+
+/**
+ * Finds the "version" from the composer.json file
+ *
+ * @category        Naneau
+ * @package         ProjectVersioner
+ * @subpackage      Reader
+ */
+class ComposerJson implements ReaderInterface
+{
+    /**
+     * {@inheritdoc}
+     **/
+    public function canRead($directory)
+    {
+        return is_readable($directory . '/composer.json');
+    }
+
+    /**
+     * {@inheritdoc}
+     **/
+    public function read($directory)
+    {
+        $json = @file_get_contents($directory . '/composer.json');
+        if ($json === false) {
+            return false;
+        }
+
+        $json = json_decode($json);
+        if (!($json instanceof stdClass) || empty($json->version)) {
+            return false;
+        } 
+
+        return trim($json->version);        
+    }
+}