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<?php declare(strict_types = 1);
/*
 * Copyright (c) 2019, Josef Kufner  <josef@kufner.cz>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
namespace Smalldb\StateMachine\ClassGenerator;
class GeneratedClassAutoloader
{
    private string $namespace;
    private string $directory;
    private int $namespaceLen;
    private bool $prependAutoloader;
    public function __construct(string $namespace, string $directory, bool $prependAutoloader = false)
    {
        $this->namespace = $namespace[-1] === '\\' ? $namespace : $namespace . "\\";
        $this->namespaceLen = strlen($this->namespace);
        $this->directory = $directory[-1] === DIRECTORY_SEPARATOR ? $directory : $directory . DIRECTORY_SEPARATOR;
        $this->prependAutoloader = $prependAutoloader;
    }
    public function registerLoader()
    {
        spl_autoload_register(function($class) {
            if (strncmp($class, $this->namespace, $this->namespaceLen) === 0) {
                require $this->directory . substr($class, $this->namespaceLen) . '.php';
            }
        }, true, $this->prependAutoloader);
    }
}