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<?php |
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/** |
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* Copyright 2014 SURFnet bv |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace Surfnet\StepupBundle\Exception; |
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use Exception; |
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use Symfony\Component\Debug\Exception\FlattenException; |
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class Art |
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{ |
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/** |
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* @param Exception $exception |
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* @return string |
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*/ |
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public static function forException(Exception $exception) |
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{ |
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return self::calculateArt(get_class($exception), $exception->getMessage()); |
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} |
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/** |
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* @param FlattenException $exception |
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* @return string |
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*/ |
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public static function forFlattenException(FlattenException $exception) |
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{ |
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return self::calculateArt($exception->getClass(), $exception->getMessage()); |
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} |
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/** |
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* @param string $className |
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* @param string $message |
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* @return string |
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*/ |
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private static function calculateArt($className, $message) |
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{ |
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$message = self::stripVariableArgumentsFromMessage($message); |
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return substr(abs(crc32(md5($className . $message))), 0, 5); |
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} |
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/** |
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* Strip variable arguments from exception messages. |
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* |
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* Some exception messages are formatted using sprintf, and result in a |
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* unique art-code for each distinct message. In order for the art-code to |
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* be useful it must be the same for each distinct error situation without |
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* taking into account variable parts of the message. |
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* |
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* This method strips all strings inside quotes. This is not perfect |
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* because it relies on sprintf arguments to always be quoted inside the |
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* message. |
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* |
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* @param $message |
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* @return string |
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*/ |
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private static function stripVariableArgumentsFromMessage($message) |
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{ |
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return preg_replace('#".*"|\'.*\'#', '', $message); |
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} |
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} |
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OpenConext /
Stepup-bundle
