Completed
Push — 7964-i18n-fallback ( 32c424 )
by Dmitry
08:04
created

PhpMessageSource::loadFallbackMessages()   B

Complexity

Conditions 9
Paths 4

Size

Total Lines 20
Code Lines 13

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 16
CRAP Score 9

Importance

Changes 1
Bugs 1 Features 0
Metric Value
c 1
b 1
f 0
dl 0
loc 20
ccs 16
cts 16
cp 1
rs 7.756
cc 9
eloc 13
nc 4
nop 4
crap 9
1
<?php
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/**
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 * @link http://www.yiiframework.com/
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 * @copyright Copyright (c) 2008 Yii Software LLC
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 * @license http://www.yiiframework.com/license/
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 */
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namespace yii\i18n;
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use Yii;
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/**
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 * PhpMessageSource represents a message source that stores translated messages in PHP scripts.
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 *
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 * PhpMessageSource uses PHP arrays to keep message translations.
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 *
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 * - Each PHP script contains one array which stores the message translations in one particular
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 *   language and for a single message category;
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 * - Each PHP script is saved as a file named as `[[basePath]]/LanguageID/CategoryName.php`;
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 * - Within each PHP script, the message translations are returned as an array like the following:
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 *
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 * ```php
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 * return [
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 *     'original message 1' => 'translated message 1',
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 *     'original message 2' => 'translated message 2',
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 * ];
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 * ```
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 *
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 * You may use [[fileMap]] to customize the association between category names and the file names.
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 *
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 * @author Qiang Xue <[email protected]>
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 * @since 2.0
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 */
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class PhpMessageSource extends MessageSource
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{
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    /**
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     * @var string the base path for all translated messages. Defaults to '@app/messages'.
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     */
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    public $basePath = '@app/messages';
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    /**
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     * @var array mapping between message categories and the corresponding message file paths.
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     * The file paths are relative to [[basePath]]. For example,
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     *
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     * ```php
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     * [
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     *     'core' => 'core.php',
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     *     'ext' => 'extensions.php',
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     * ]
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     * ```
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     */
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    public $fileMap;
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    /**
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     * Loads the message translation for the specified $language and $category.
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     * If translation for specific locale code such as `en-US` isn't found it
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     * tries more generic `en`. When both are present, the `en-US` messages will be merged
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     * over `en`. See [[loadFallbackMessages]] for details.
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     * If the $language is less specific than [[sourceLanguage]], the method will try to
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     * load the messages for [[sourceLanguage]]. For example: [[sourceLanguage]] is `en-GB`,
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     * $language is `en`. The method will load the messages for `en` and merge them over `en-GB`.
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     *
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     * @param string $category the message category
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     * @param string $language the target language
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     * @return array the loaded messages. The keys are original messages, and the values are the translated messages.
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     * @see loadFallbackMessages
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     * @see sourceLanguage
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     */
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    protected function loadMessages($category, $language)
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    {
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        $messageFile = $this->getMessageFilePath($category, $language);
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        $messages = $this->loadMessagesFromFile($messageFile);
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        $fallbackLanguage = substr($language, 0, 2);
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        $fallbackSourceLanguage = substr($this->sourceLanguage, 0, 2);
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        if ($language !== $fallbackLanguage) {
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            $messages = $this->loadFallbackMessages($category, $fallbackLanguage, $messages, $messageFile);
0 ignored issues
show
Bug introduced by
It seems like $messages defined by $this->loadFallbackMessa...messages, $messageFile) on line 78 can also be of type null; however, yii\i18n\PhpMessageSource::loadFallbackMessages() does only seem to accept array, maybe add an additional type check?

If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:

/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.

Loading history...
79 158
        } elseif ($language === $fallbackSourceLanguage) {
80 2
            $messages = $this->loadFallbackMessages($category, $this->sourceLanguage, $messages, $messageFile);
0 ignored issues
show
Bug introduced by
It seems like $messages defined by $this->loadFallbackMessa...messages, $messageFile) on line 80 can also be of type null; however, yii\i18n\PhpMessageSource::loadFallbackMessages() does only seem to accept array, maybe add an additional type check?

If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:

/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.

Loading history...
81 2
        } else {
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            if ($messages === null) {
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                Yii::error("The message file for category '$category' does not exist: $messageFile", __METHOD__);
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            }
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        }
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        return (array) $messages;
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    }
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    /**
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     * The method is normally called by [[loadMessages]] to load the fallback messages for the language.
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     * Method tries to load the $category messages for the $fallbackLanguage and adds them to the $messages array.
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     *
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     * @param string $category the message category
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     * @param string $fallbackLanguage the target fallback language
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     * @param array $messages the array of previously loaded translation messages.
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     * The keys are original messages, and the values are the translated messages.
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     * @param string $originalMessageFile the path to the file with messages. Used to log an error message
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     * in case when no translations were found.
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     * @return array the loaded messages. The keys are original messages, and the values are the translated messages.
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     * @since 2.0.7
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     */
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    protected function loadFallbackMessages($category, $fallbackLanguage, $messages, $originalMessageFile)
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    {
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        $fallbackMessageFile = $this->getMessageFilePath($category, $fallbackLanguage);
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        $fallbackMessages = $this->loadMessagesFromFile($fallbackMessageFile);
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        if ($messages === null && $fallbackMessages === null && $fallbackLanguage !== $this->sourceLanguage) {
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            Yii::error("The message file for category '$category' does not exist: $originalMessageFile "
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                . "Fallback file does not exist as well: $fallbackMessageFile", __METHOD__);
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        } elseif (empty($messages)) {
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            return $fallbackMessages;
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        } elseif (!empty($fallbackMessages)) {
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            foreach ($fallbackMessages as $key => $value) {
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                if (!empty($value) && empty($messages[$key])) {
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                    $messages[$key] = $fallbackMessages[$key];
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                }
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            }
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        }
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        return (array) $messages;
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    }
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    /**
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     * Returns message file path for the specified language and category.
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     *
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     * @param string $category the message category
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     * @param string $language the target language
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     * @return string path to message file
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     */
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    protected function getMessageFilePath($category, $language)
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    {
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        $messageFile = Yii::getAlias($this->basePath) . "/$language/";
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        if (isset($this->fileMap[$category])) {
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            $messageFile .= $this->fileMap[$category];
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        } else {
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            $messageFile .= str_replace('\\', '/', $category) . '.php';
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        }
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        return $messageFile;
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    }
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    /**
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     * Loads the message translation for the specified language and category or returns null if file doesn't exist.
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     *
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     * @param string $messageFile path to message file
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     * @return array|null array of messages or null if file not found
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     */
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    protected function loadMessagesFromFile($messageFile)
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    {
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        if (is_file($messageFile)) {
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            $messages = include($messageFile);
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            if (!is_array($messages)) {
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                $messages = [];
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            }
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            return $messages;
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        } else {
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            return null;
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        }
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    }
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}
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