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-rw-r--r--library/Icinga/Test/ClassLoader.php113
1 files changed, 113 insertions, 0 deletions
diff --git a/library/Icinga/Test/ClassLoader.php b/library/Icinga/Test/ClassLoader.php
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+++ b/library/Icinga/Test/ClassLoader.php
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+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Test;
+
+/**
+ * PSR-4 class loader
+ */
+class ClassLoader
+{
+ /**
+ * Namespace separator
+ */
+ const NAMESPACE_SEPARATOR = '\\';
+
+ /**
+ * Namespaces
+ *
+ * @var array
+ */
+ private $namespaces = array();
+
+ /**
+ * Register a base directory for a namespace prefix
+ *
+ * @param string $namespace
+ * @param string $directory
+ *
+ * @return $this
+ */
+ public function registerNamespace($namespace, $directory)
+ {
+ $this->namespaces[$namespace] = $directory;
+
+ return $this;
+ }
+
+ /**
+ * Test whether a namespace exists
+ *
+ * @param string $namespace
+ *
+ * @return bool
+ */
+ public function hasNamespace($namespace)
+ {
+ return array_key_exists($namespace, $this->namespaces);
+ }
+
+ /**
+ * Get the source file of the given class or interface
+ *
+ * @param string $class Name of the class or interface
+ *
+ * @return string|null
+ */
+ public function getSourceFile($class)
+ {
+ foreach ($this->namespaces as $namespace => $dir) {
+ if ($class === strstr($class, $namespace)) {
+ $classPath = str_replace(
+ self::NAMESPACE_SEPARATOR,
+ DIRECTORY_SEPARATOR,
+ substr($class, strlen($namespace))
+ ) . '.php';
+ if (file_exists($file = $dir . $classPath)) {
+ return $file;
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Load the given class or interface
+ *
+ * @param string $class Name of the class or interface
+ *
+ * @return bool Whether the class or interface has been loaded
+ */
+ public function loadClass($class)
+ {
+ if ($file = $this->getSourceFile($class)) {
+ require $file;
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Register {@link loadClass()} as an autoloader
+ */
+ public function register()
+ {
+ spl_autoload_register(array($this, 'loadClass'));
+ }
+
+ /**
+ * Unregister {@link loadClass()} as an autoloader
+ */
+ public function unregister()
+ {
+ spl_autoload_unregister(array($this, 'loadClass'));
+ }
+
+ /**
+ * Unregister this as an autoloader
+ */
+ public function __destruct()
+ {
+ $this->unregister();
+ }
+}