<?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(__DIR__) . '/namespaced/' . str_replace('\\', '/', $relative_class) . '.php';

    // if the file exists, require it

    if (file_exists($file)) {

        require_once $file;

        return true;

    }

    return false;

});