<?php

/**
 * Simple PSR-4 autoloader
 *
 * Based on PSR-4 example code
 *
 * @link http://www.php-fig.org/psr/psr-4/examples/
 * @param string $class The fully-qualified class name.
 * @return void
 */
spl_autoload_register(function($class) {
    $namespaces = array(
        'Psr\\Log\\' => __DIR__ . '/subtree/php-fig/log/Psr/Log/',
        'Tx\\' => __DIR__ . '/subtree/txtthinking/Mailer/src/',
        'splitbrain\\dokuwiki\\plugin\\smtp\\' => __DIR__ . '/classes/'
    );

    foreach($namespaces as $prefix => $base_dir) {
        // does the class use the namespace prefix?
        $len = strlen($prefix);
        if (strncmp($prefix, $class, $len) !== 0) {
            // no, move to the next
            continue;
        }

        // 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 = $base_dir . str_replace('\\', '/', $relative_class) . '.php';

        // if the file exists, require it
        if (file_exists($file)) {
            require $file;
        }
    }
});