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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,263 @@ | ||
| <?php namespace CodeIgniter\Config; | ||
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| /** | ||
| * CodeIgniter | ||
| * | ||
| * An open source application development framework for PHP | ||
| * | ||
| * This content is released under the MIT License (MIT) | ||
| * | ||
| * Copyright (c) 2014-2018 British Columbia Institute of Technology | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| * | ||
| * @package CodeIgniter | ||
| * @author CodeIgniter Dev Team | ||
| * @copyright 2014-2018 British Columbia Institute of Technology (https://bcit.ca/) | ||
| * @license https://opensource.org/licenses/MIT MIT License | ||
| * @link https://codeigniter.com | ||
| * @since Version 3.0.0 | ||
| * @filesource | ||
| */ | ||
|
|
||
| /** | ||
| * Services Configuration file. | ||
| * | ||
| * Services are simply other classes/libraries that the system uses | ||
| * to do its job. This is used by CodeIgniter to allow the core of the | ||
| * framework to be swapped out easily without affecting the usage within | ||
| * the rest of your application. | ||
| * | ||
| * This is used in place of a Dependency Injection container primarily | ||
| * due to its simplicity, which allows a better long-term maintenance | ||
| * of the applications built on top of CodeIgniter. A bonus side-effect | ||
| * is that IDEs are able to determine what class you are calling | ||
| * whereas with DI Containers there usually isn't a way for them to do this. | ||
| * | ||
| * @see http://blog.ircmaxell.com/2015/11/simple-easy-risk-and-change.html | ||
| * @see http://www.infoq.com/presentations/Simple-Made-Easy | ||
| */ | ||
| class BaseService | ||
| { | ||
|
|
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| /** | ||
| * Cache for instance of any services that | ||
| * have been requested as a "shared" instance. | ||
| * | ||
| * @var array | ||
| */ | ||
| static protected $instances = []; | ||
|
|
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| /** | ||
| * Mock objects for testing which are returned if exist. | ||
| * | ||
| * @var array | ||
| */ | ||
| static protected $mocks = []; | ||
|
|
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| /** | ||
| * Have we already discovered other Services? | ||
| * | ||
| * @var bool | ||
| */ | ||
| static protected $discovered = false; | ||
|
|
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| /** | ||
| * A cache of other service classes we've found. | ||
| * | ||
| * @var array | ||
| */ | ||
| static protected $services = []; | ||
|
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| //-------------------------------------------------------------------- | ||
|
|
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| /** | ||
| * Returns a shared instance of any of the class' services. | ||
| * | ||
| * $key must be a name matching a service. | ||
| * | ||
| * @param string $key | ||
| * @param array ...$params | ||
| * | ||
| * @return mixed | ||
| */ | ||
| protected static function getSharedInstance(string $key, ...$params) | ||
| { | ||
| // Returns mock if exists | ||
| if (isset(static::$mocks[$key])) | ||
| { | ||
| return static::$mocks[$key]; | ||
| } | ||
|
|
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| if (! isset(static::$instances[$key])) | ||
| { | ||
| // Make sure $getShared is false | ||
| array_push($params, false); | ||
|
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| static::$instances[$key] = static::$key(...$params); | ||
| } | ||
|
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| return static::$instances[$key]; | ||
| } | ||
|
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| //-------------------------------------------------------------------- | ||
|
|
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| /** | ||
| * Provides the ability to perform case-insensitive calling of service | ||
| * names. | ||
| * | ||
| * @param string $name | ||
| * @param array $arguments | ||
| * | ||
| * @return mixed | ||
| */ | ||
| public static function __callStatic(string $name, array $arguments) | ||
| { | ||
| $name = strtolower($name); | ||
|
|
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| if (method_exists(__CLASS__, $name)) | ||
| { | ||
| return Services::$name(...$arguments); | ||
| } | ||
|
|
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| return static::discoverServices($name, $arguments); | ||
| } | ||
|
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| //-------------------------------------------------------------------- | ||
|
|
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| /** | ||
| * Reset shared instances and mocks for testing. | ||
| */ | ||
| public static function reset() | ||
| { | ||
| static::$mocks = []; | ||
|
|
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| static::$instances = []; | ||
| } | ||
|
|
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| //-------------------------------------------------------------------- | ||
|
|
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| /** | ||
| * Inject mock object for testing. | ||
| * | ||
| * @param string $name | ||
| * @param $mock | ||
| */ | ||
| public static function injectMock(string $name, $mock) | ||
| { | ||
| $name = strtolower($name); | ||
| static::$mocks[$name] = $mock; | ||
| } | ||
|
|
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| //-------------------------------------------------------------------- | ||
|
|
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| /** | ||
| * Will scan all psr4 namespaces registered with system to look | ||
| * for new Config\Services files. Caches a copy of each one, then | ||
| * looks for the service method in each, returning an instance of | ||
| * the service, if available. | ||
| * | ||
| * @param string $name | ||
| * @param array $arguments | ||
| */ | ||
| protected static function discoverServices(string $name, array $arguments) | ||
| { | ||
| if (! static::$discovered) | ||
| { | ||
| $locator = static::locator(); | ||
| $files = $locator->search('Config/Services'); | ||
|
|
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| if (empty($files)) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| // Get instances of all service classes and cache them locally. | ||
| foreach ($files as $file) | ||
| { | ||
| $classname = static::getClassName($file); | ||
|
|
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| if (! in_array($classname, ['Config\\Services', 'CodeIgniter\\Config\\Services'])) | ||
| { | ||
| static::$services[] = new $classname(); | ||
| } | ||
| } | ||
| } | ||
|
|
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| if (! count(static::$services)) | ||
| { | ||
| return; | ||
| } | ||
|
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| // Try to find the desired service method | ||
| foreach (static::$services as $class) | ||
| { | ||
| if (method_exists($class, $name)) | ||
| { | ||
| return $class::$name(...$arguments); | ||
| } | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Examines a file and returns the fully qualified domain name. | ||
| * | ||
| * @param string $file | ||
| * | ||
| * @return string | ||
| */ | ||
| private static function getClassname(string $file) | ||
| { | ||
| $php = file_get_contents($file); | ||
| $tokens = token_get_all($php); | ||
| $count = count($tokens); | ||
| $dlm = false; | ||
| $namespace = ''; | ||
| $class_name = ''; | ||
|
|
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| for ($i = 2; $i < $count; $i++) | ||
| { | ||
| if ((isset($tokens[$i-2][1]) && ($tokens[$i-2][1] == "phpnamespace" || $tokens[$i-2][1] == "namespace")) || ($dlm && $tokens[$i-1][0] == T_NS_SEPARATOR && $tokens[$i][0] == T_STRING)) | ||
| { | ||
| if (! $dlm) | ||
| { | ||
| $namespace = 0; | ||
| } | ||
| if (isset($tokens[$i][1])) | ||
| { | ||
| $namespace = $namespace ? $namespace."\\".$tokens[$i][1] : $tokens[$i][1]; | ||
| $dlm = true; | ||
| } | ||
| } | ||
| elseif ($dlm && ($tokens[$i][0] != T_NS_SEPARATOR) && ($tokens[$i][0] != T_STRING)) | ||
| { | ||
| $dlm = false; | ||
| } | ||
| if (($tokens[$i-2][0] == T_CLASS || (isset($tokens[$i-2][1]) && $tokens[$i-2][1] == "phpclass")) | ||
| && $tokens[$i-1][0] == T_WHITESPACE | ||
| && $tokens[$i][0] == T_STRING) | ||
| { | ||
| $class_name = $tokens[$i][1]; | ||
| break; | ||
| } | ||
| } | ||
|
|
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| return $namespace .'\\'. $class_name; | ||
| } | ||
| } |
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