Add multiple configuration formats support

Author: pyldin601

Migrate/Command/AbstractEnvCommand.php

@@ -9,12 +9,11 @@
 namespace Migrate\Command;
 
 
+use Migrate\Config\ConfigLocator;
 use Migrate\Migration;
 use Migrate\Utils\ArrayUtil;
-use Symfony\Component\Config\FileLocator;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
-use Symfony\Component\Yaml\Yaml;
 
 class AbstractEnvCommand extends AbstractComand
 {
@@ -61,16 +60,20 @@ protected function checkEnv()
 
     protected function init(InputInterface $input, OutputInterface $output, $env = null)
     {
-        $configDirectory = array(getcwd() . '/.php-database-migration/environments');
-        $locator = new FileLocator($configDirectory);
+        $configDirectory = getcwd() . '/.php-database-migration/environments';
+        $configLocator = new ConfigLocator($configDirectory);
 
         if ($env === null) {
             $env = $input->getArgument('env');
         }
 
-        $envFile = $locator->locate($env . '.yml');
+        $parser = $configLocator->locate($env);
 
-        $conf = Yaml::parse(file_get_contents($envFile));
+        if (is_null($parser)) {
+            throw new \RuntimeException("Could not locate supported environment file");
+        }
+
+        $conf = $parser->parse();
 
         $this->config = $conf;
 

Migrate/Config/BaseConfigParser.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: roman
+ * Date: 7/24/17
+ * Time: 09:47
+ */
+
+namespace Migrate\Config;
+
+abstract class BaseConfigParser implements ConfigParser
+{
+    protected $configFile;
+
+    public function __construct($configFile)
+    {
+        $this->configFile = $configFile;
+    }
+
+    abstract public function parse();
+}

Migrate/Config/ConfigLocator.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: roman
+ * Date: 7/24/17
+ * Time: 09:49
+ */
+
+namespace Migrate\Config;
+
+class ConfigLocator
+{
+    static $SUPPORTED_PARSERS = [
+        'yaml' => '\Migrate\Config\YamlConfigParser',
+        'json' => '\Migrate\Config\JsonConfigParser',
+        'php' => '\Migrate\Config\PhpConfigParser'
+    ];
+
+    private $configPath;
+
+    public function __construct($configPath)
+    {
+        $this->configPath = $configPath;
+    }
+
+    public function locate($nameWithoutExt)
+    {
+        foreach (array_keys(self::$SUPPORTED_PARSERS) as $format) {
+            $path = $this->configPath . '/' . $nameWithoutExt . '.' . $format;
+            if (file_exists($path)) {
+                $parserClass = self::$SUPPORTED_PARSERS[$format];
+                return new $parserClass($path);
+            }
+        }
+        return null;
+    }
+}

Migrate/Config/ConfigParser.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Migrate\Config;
+
+interface ConfigParser
+{
+    public function parse();
+}

Migrate/Config/JsonConfigParser.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Migrate\Config;
+
+class JsonConfigParser extends BaseConfigParser
+{
+    public function parse()
+    {
+        return json_decode(file_get_contents($this->configFile), true);
+    }
+}

Migrate/Config/PhpConfigParser.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: roman
+ * Date: 7/24/17
+ * Time: 09:45
+ */
+
+namespace Migrate\Config;
+
+class PhpConfigParser extends BaseConfigParser
+{
+    public function parse()
+    {
+        return require $this->configFile;
+    }
+}

Migrate/Config/YamlConfigParser.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: roman
+ * Date: 7/24/17
+ * Time: 09:41
+ */
+
+namespace Migrate\Config;
+
+use Symfony\Component\Yaml\Yaml;
+
+class YamlConfigParser extends BaseConfigParser
+{
+    public function parse()
+    {
+        return Yaml::parse(file_get_contents($this->configFile));
+    }
+}