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<?php
 require_once dirname(dirname(__FILE__)) . '/autoload.php';
 
 if (PHP_VERSION_ID < 50300) {
 return;
 }
 
 /*
 * This file is just for convenience, to allow developers to reduce verbosity when
 * they add this project to their libraries.
 *
 * Replace this:
 *
 * $x = ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_encrypt(...$args);
 *
 * with this:
 *
 * use ParagonIE\Sodium\Compat;
 *
 * $x = Compat::crypto_aead_xchacha20poly1305_encrypt(...$args);
 */
 spl_autoload_register(function ($class) {
 if ($class[0] === '\\') {
 $class = substr($class, 1);
 }
 $namespace = 'ParagonIE\\Sodium';
 // Does the class use the namespace prefix?
 $len = strlen($namespace);
 if (strncmp($namespace, $class, $len) !== 0) {
 // no, move to the next registered autoloader
 return false;
 }
 
 // Get the relative class name
 $relative_class = substr($class, $len);
 
 // Replace the namespace prefix with the base directory, replace namespace
 // separators with directory separators in the relative class name, append
 // with .php
 $file = dirname(dirname(__FILE__)) . '/namespaced/' . str_replace('\\', '/', $relative_class) . '.php';
 // if the file exists, require it
 if (file_exists($file)) {
 require_once $file;
 return true;
 }
 return false;
 });
 
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