FIX: _config/ directories are now correctly detected as modules (fixes #1762)

DO NOT MERGE: to be reviewed. Only i18n & Deprecation classes use
->getModules() as far as I can see. Given that the method still simply
returns an array of modulename => modulepath, I don't think it's really
an API change

core/manifest/ClassManifest.php

@@ -15,6 +15,7 @@
 class SS_ClassManifest {
 
 	const CONF_FILE = '_config.php';
+	const CONF_DIR = '_config';
 
 	protected $base;
 	protected $tests;
@@ -28,6 +29,7 @@ class SS_ClassManifest {
 	protected $interfaces   = array();
 	protected $implementors = array();
 	protected $configs      = array();
+	protected $configDirs   = array();
 
 	/**
 	 * @return TokenisedRegularExpression
@@ -128,6 +130,7 @@ class SS_ClassManifest {
 			$this->interfaces   = $data['interfaces'];
 			$this->implementors = $data['implementors'];
 			$this->configs      = $data['configs'];
+			$this->configDirs   = $data['configDirs'];
 		} else {
 			$this->regenerate($cache);
 		}
@@ -254,6 +257,10 @@ class SS_ClassManifest {
 		foreach($this->configs as $configPath) {
 			$modules[basename(dirname($configPath))] = dirname($configPath);
 		}
+		foreach($this->configDirs as $configDir) {
+			$path = preg_replace('/\/_config$/', '', dirname($configDir));
+			$modules[basename($path)] = $path;
+		}
 		return $modules;
 	}
 
@@ -265,7 +272,7 @@ class SS_ClassManifest {
 	public function regenerate($cache = true) {
 		$reset = array(
 			'classes', 'roots', 'children', 'descendants', 'interfaces',
-			'implementors', 'configs'
+			'implementors', 'configs', 'configDirs'
 		);
 
 		// Reset the manifest so stale info doesn't cause errors.
@@ -278,7 +285,8 @@ class SS_ClassManifest {
 			'name_regex'    => '/^(_config.php|[^_].*\.php)$/',
 			'ignore_files'  => array('index.php', 'main.php', 'cli-script.php'),
 			'ignore_tests'  => !$this->tests,
-			'file_callback' => array($this, 'handleFile')
+			'file_callback' => array($this, 'handleFile'),
+			'dir_callback' => array($this, 'handleDir')
 		));
 		$finder->find($this->base);
 
@@ -292,12 +300,19 @@ class SS_ClassManifest {
 				'descendants'  => $this->descendants,
 				'interfaces'   => $this->interfaces,
 				'implementors' => $this->implementors,
-				'configs'      => $this->configs
+				'configs'      => $this->configs,
+				'configDirs'   => $this->configDirs
 			);
 			$this->cache->save($data, $this->cacheKey);
 		}
 	}
 
+	public function handleDir($basename, $pathname, $depth) {
+		if ($basename == self::CONF_DIR) {
+			$this->configDirs[] = $pathname;
+		}
+	}
+
 	public function handleFile($basename, $pathname, $depth) {
 		if ($basename == self::CONF_FILE) {
 			$this->configs[] = $pathname;

tests/core/manifest/ClassManifestTest.php

@@ -107,7 +107,10 @@ class ClassManifestTest extends SapphireTest {
 	}
 
 	public function testGetModules() {
-		$expect = array("module" => "{$this->base}/module");
+		$expect = array(
+			"module" => "{$this->base}/module",
+			"moduleb" => "{$this->base}/moduleb"
+		);
 		$this->assertEquals($expect, $this->manifest->getModules());
 		$this->assertEquals($expect, $this->manifestTests->getModules());
 	}

tests/core/manifest/NamespacedClassManifestTest.php

@@ -111,7 +111,10 @@ class NamespacedClassManifestTest extends SapphireTest {
 	}
 	
 	public function testGetModules() {
-		$expect = array("module" => "{$this->base}/module");
+		$expect = array(
+			"module" => "{$this->base}/module",
+			"moduleb" => "{$this->base}/moduleb"
+		);
 		$this->assertEquals($expect, $this->manifest->getModules());
 	}
 }