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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\Translation\Loader;
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13
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14 use Symfony\Component\Translation\Exception\InvalidResourceException;
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15
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16 /**
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17 * JsonFileLoader loads translations from an json file.
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18 *
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19 * @author singles
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20 */
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21 class JsonFileLoader extends FileLoader
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22 {
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23 /**
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24 * {@inheritdoc}
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25 */
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26 protected function loadResource($resource)
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27 {
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28 $messages = [];
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29 if ($data = file_get_contents($resource)) {
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30 $messages = json_decode($data, true);
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31
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32 if (0 < $errorCode = json_last_error()) {
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33 throw new InvalidResourceException(sprintf('Error parsing JSON - %s', $this->getJSONErrorMessage($errorCode)));
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34 }
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35 }
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36
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37 return $messages;
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38 }
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39
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40 /**
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41 * Translates JSON_ERROR_* constant into meaningful message.
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42 *
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43 * @param int $errorCode Error code returned by json_last_error() call
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44 *
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45 * @return string Message string
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46 */
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47 private function getJSONErrorMessage($errorCode)
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48 {
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49 switch ($errorCode) {
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50 case JSON_ERROR_DEPTH:
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51 return 'Maximum stack depth exceeded';
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52 case JSON_ERROR_STATE_MISMATCH:
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53 return 'Underflow or the modes mismatch';
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54 case JSON_ERROR_CTRL_CHAR:
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55 return 'Unexpected control character found';
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56 case JSON_ERROR_SYNTAX:
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57 return 'Syntax error, malformed JSON';
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58 case JSON_ERROR_UTF8:
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59 return 'Malformed UTF-8 characters, possibly incorrectly encoded';
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60 default:
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61 return 'Unknown error';
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62 }
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63 }
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64 }
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