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Development.php
170 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Matomo - free/libre analytics platform |
| 5 | * |
| 6 | * @link https://matomo.org |
| 7 | * @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later |
| 8 | */ |
| 9 | namespace Piwik; |
| 10 | |
| 11 | use Exception; |
| 12 | use Piwik\Container\StaticContainer; |
| 13 | use Piwik\Log\LoggerInterface; |
| 14 | /** |
| 15 | * Development related checks and tools. You can enable/disable development using `./console development:enable` and |
| 16 | * `./console development:disable`. The intention of the development mode and this class is to support the developer |
| 17 | * as much as possible by doing some additional checks if the development mode is enabled. For instance if a developer |
| 18 | * has to register any class/method we can make sure whether they actually exist and if not display a useful error |
| 19 | * message. This helps the user to find for instance simple typos and makes sure it will actually work even if he |
| 20 | * forgets to test it. |
| 21 | */ |
| 22 | class Development |
| 23 | { |
| 24 | private static $isEnabled = null; |
| 25 | /** |
| 26 | * Returns `true` if development mode is enabled and `false` otherwise. |
| 27 | * |
| 28 | * @return bool |
| 29 | */ |
| 30 | public static function isEnabled() |
| 31 | { |
| 32 | if (is_null(self::$isEnabled)) { |
| 33 | self::$isEnabled = (bool) \Piwik\Config::getInstance()->Development['enabled']; |
| 34 | } |
| 35 | return self::$isEnabled; |
| 36 | } |
| 37 | /** |
| 38 | * Verifies whether a className of object implements the given method. It does not check whether the given method |
| 39 | * is actually callable (public). |
| 40 | * |
| 41 | * @param string|object $classOrObject |
| 42 | * @param string $method |
| 43 | * |
| 44 | * @return bool true if the method exists, false otherwise. |
| 45 | */ |
| 46 | public static function methodExists($classOrObject, $method) |
| 47 | { |
| 48 | if (is_string($classOrObject)) { |
| 49 | return class_exists($classOrObject) && method_exists($classOrObject, $method); |
| 50 | } |
| 51 | return method_exists($classOrObject, $method); |
| 52 | } |
| 53 | /** |
| 54 | * Formats a method call depending on the given class/object and method name. It does not perform any checks whether |
| 55 | * the method actually exists. |
| 56 | * |
| 57 | * @param string|object $classOrObject |
| 58 | * @param string $method |
| 59 | * |
| 60 | * @return string Formatted method call. Example: "MyNamespace\MyClassname::methodName()" |
| 61 | */ |
| 62 | public static function formatMethodCall($classOrObject, $method) |
| 63 | { |
| 64 | if (is_object($classOrObject)) { |
| 65 | $classOrObject = get_class($classOrObject); |
| 66 | } |
| 67 | return $classOrObject . '::' . $method . '()'; |
| 68 | } |
| 69 | /** |
| 70 | * Checks whether the given method is actually callable on the given class/object if the development mode is |
| 71 | * enabled. En error will be triggered if the method does not exist or is not callable (public) containing a useful |
| 72 | * error message for the developer. |
| 73 | * |
| 74 | * @param string|object $classOrObject |
| 75 | * @param string $method |
| 76 | * @param string $prefixMessageIfError You can prepend any string to the error message in case the method is not |
| 77 | * callable. |
| 78 | */ |
| 79 | public static function checkMethodIsCallable($classOrObject, $method, $prefixMessageIfError) |
| 80 | { |
| 81 | if (!self::isEnabled()) { |
| 82 | return; |
| 83 | } |
| 84 | self::checkMethodExists($classOrObject, $method, $prefixMessageIfError); |
| 85 | if (!self::isCallableMethod($classOrObject, $method)) { |
| 86 | self::error($prefixMessageIfError . ' "' . self::formatMethodCall($classOrObject, $method) . '" is not callable. Please make sure to method is public'); |
| 87 | } |
| 88 | } |
| 89 | /** |
| 90 | * Checks whether the given method actually exists on the given class/object if the development mode is |
| 91 | * enabled. An error will be triggered if the method does not exist, containing a useful error message |
| 92 | * for the developer. |
| 93 | * |
| 94 | * @param string|object $classOrObject |
| 95 | * @param string $method |
| 96 | * @param string $prefixMessageIfError You can prepend any string to the error message in case the method |
| 97 | * does not exist. |
| 98 | */ |
| 99 | public static function checkMethodExists($classOrObject, $method, $prefixMessageIfError) |
| 100 | { |
| 101 | if (!self::isEnabled()) { |
| 102 | return; |
| 103 | } |
| 104 | if (!self::methodExists($classOrObject, $method)) { |
| 105 | self::error($prefixMessageIfError . ' "' . self::formatMethodCall($classOrObject, $method) . '" does not exist. Please make sure to define such a method.'); |
| 106 | } |
| 107 | } |
| 108 | /** |
| 109 | * Verify whether the given method actually exists and is callable (public). |
| 110 | * |
| 111 | * @param string|object $classOrObject |
| 112 | * @param string $method |
| 113 | * @return bool |
| 114 | */ |
| 115 | public static function isCallableMethod($classOrObject, $method) |
| 116 | { |
| 117 | if (!self::methodExists($classOrObject, $method)) { |
| 118 | return \false; |
| 119 | } |
| 120 | $reflection = new \ReflectionMethod($classOrObject, $method); |
| 121 | return $reflection->isPublic(); |
| 122 | } |
| 123 | /** |
| 124 | * Triggers an error if the development mode is enabled. Depending on the current environment / mode it will either |
| 125 | * log the given message or throw an exception to make sure it will be displayed in the Piwik UI. |
| 126 | * |
| 127 | * @param string $message |
| 128 | * @throws Exception |
| 129 | */ |
| 130 | public static function error($message) |
| 131 | { |
| 132 | if (!self::isEnabled()) { |
| 133 | return; |
| 134 | } |
| 135 | $message .= ' (This error is only shown in development mode)'; |
| 136 | if (\Piwik\SettingsServer::isTrackerApiRequest() || \Piwik\Common::isPhpCliMode()) { |
| 137 | StaticContainer::get(LoggerInterface::class)->error($message, ['ignoreInScreenWriter' => \true]); |
| 138 | } else { |
| 139 | throw new Exception($message); |
| 140 | } |
| 141 | } |
| 142 | public static function getMethodSourceCode($className, $methodName) |
| 143 | { |
| 144 | $method = new \ReflectionMethod($className, $methodName); |
| 145 | $file = new \SplFileObject($method->getFileName()); |
| 146 | $offset = $method->getStartLine() - 1; |
| 147 | $count = $method->getEndLine() - $method->getStartLine() + 1; |
| 148 | $fileIterator = new \LimitIterator($file, $offset, $count); |
| 149 | $methodCode = "\n " . $method->getDocComment() . "\n"; |
| 150 | foreach ($fileIterator as $line) { |
| 151 | $methodCode .= $line; |
| 152 | } |
| 153 | $methodCode .= "\n"; |
| 154 | return $methodCode; |
| 155 | } |
| 156 | public static function getUseStatements($className) |
| 157 | { |
| 158 | $class = new \ReflectionClass($className); |
| 159 | $file = new \SplFileObject($class->getFileName()); |
| 160 | $fileIterator = new \LimitIterator($file, 0, $class->getStartLine()); |
| 161 | $uses = array(); |
| 162 | foreach ($fileIterator as $line) { |
| 163 | if (preg_match('/(\\s*)use (.+)/', $line, $match)) { |
| 164 | $uses[] = trim($match[2]); |
| 165 | } |
| 166 | } |
| 167 | return $uses; |
| 168 | } |
| 169 | } |
| 170 |