1 <?php

     2 

     3 if (PHP_VERSION_ID < 50300) {

     4     return;

     5 }

     6 

     7 /*

     8  * This file is just for convenience, to allow developers to reduce verbosity when

     9  * they add this project to their libraries.

    10  *

    11  * Replace this:

    12  *

    13  * $x = ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_encrypt(...$args);

    14  *

    15  * with this:

    16  *

    17  * use ParagonIE\Sodium\Compat;

    18  *

    19  * $x = Compat::crypto_aead_xchacha20poly1305_encrypt(...$args);

    20  */

    21 spl_autoload_register(function ($class) {

    22     if ($class[0] === '\\') {

    23         $class = substr($class, 1);

    24     }

    25     $namespace = 'ParagonIE\\Sodium';

    26     // Does the class use the namespace prefix?

    27     $len = strlen($namespace);

    28     if (strncmp($namespace, $class, $len) !== 0) {

    29         // no, move to the next registered autoloader

    30         return false;

    31     }

    32 

    33     // Get the relative class name

    34     $relative_class = substr($class, $len);

    35 

    36     // Replace the namespace prefix with the base directory, replace namespace

    37     // separators with directory separators in the relative class name, append

    38     // with .php

    39     $file = dirname(__DIR__) . '/namespaced/' . str_replace('\\', '/', $relative_class) . '.php';

    40     // if the file exists, require it

    41     if (file_exists($file)) {

    42         require_once $file;

    43         return true;

    44     }

    45     return false;

    46 });