[BUGFIX] L10n fallback does not work for ExtJS in BE

PageRenderer does not take language dependency into account when reading
localization files to be included as JavaScript labels.

Change-Id: I23d12dd06a99e72968a26d5930decb87901e8af6
Fixes: #44273
Releases: 4.6, 4.7, 6.0, 6.1
Reviewed-on: https://review.typo3.org/17313
Reviewed-by: Mattias Nilsson
Reviewed-by: Begoña Garea Garcia
Tested-by: Begoña Garea Garcia
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers
Reviewed-on: https://review.typo3.org/18266

diff --git a/typo3/sysext/core/Classes/Page/PageRenderer.php b/typo3/sysext/core/Classes/Page/PageRenderer.php
index 6e81892..76b1f5e 100644 (file)
--- a/typo3/sysext/core/Classes/Page/PageRenderer.php
+++ b/typo3/sysext/core/Classes/Page/PageRenderer.php
@@ -104,6 +104,14 @@ class PageRenderer implements \TYPO3\CMS\Core\SingletonInterface {
        protected $lang;
 
        /**
+        * List of language dependencies for actual language. This is used for local variants of a language
+        * that depend on their "main" language, like Brazilian Portuguese or Canadian French.
+        *
+        * @var array
+        */
+       protected $languageDependencies = array();
+
+       /**
         * @var \TYPO3\CMS\Core\Resource\ResourceCompressor
         */
        protected $compressor;
@@ -550,6 +558,15 @@ class PageRenderer implements \TYPO3\CMS\Core\SingletonInterface {
         */
        public function setLanguage($lang) {
                $this->lang = $lang;
+               $this->languageDependencies = array();
+
+               // Language is found. Configure it:
+               if (in_array($this->lang, $this->locales->getLocales())) {
+                       $this->languageDependencies[] = $this->lang;
+                       foreach ($this->locales->getLocaleDependencies($this->lang) as $language) {
+                               $this->languageDependencies[] = $language;
+                       }
+               }
        }
 
        /**
@@ -2313,7 +2330,7 @@ class PageRenderer implements \TYPO3\CMS\Core\SingletonInterface {
                        throw new \RuntimeException('Language and character encoding are not set.', 1284906026);
                }
                $labelsFromFile = array();
-               $allLabels = \TYPO3\CMS\Core\Utility\GeneralUtility::readLLfile($fileRef, $this->lang, $this->charSet, $errorMode);
+               $allLabels = $this->readLLfile($fileRef, $errorMode);
                // Regular expression to strip the selection prefix and possibly something from the label name:
                $labelPattern = '#^' . preg_quote($selectionPrefix, '#') . '(' . preg_quote($stripFromSelectionName, '#') . ')?#';
                if ($allLabels !== FALSE) {
@@ -2336,6 +2353,42 @@ class PageRenderer implements \TYPO3\CMS\Core\SingletonInterface {
                }
        }
 
+       /**
+        * Reads a locallang file.
+        *
+        * @param string $fileRef Reference to a relative filename to include.
+        * @param integer $errorMode Error mode (when file could not be found): 0 - syslog entry, 1 - do nothing, 2 - throw an exception
+        * @return array Returns the $LOCAL_LANG array found in the file. If no array found, returns empty array.
+        */
+       protected function readLLfile($fileRef, $errorMode = 0) {
+               if ($this->lang !== 'default') {
+                       $languages = array_reverse($this->languageDependencies);
+                       // At least we need to have English
+                       if (empty($languages)) {
+                               $languages[] = 'default';
+                       }
+               } else {
+                       $languages = array('default');
+               }
+
+               $localLanguage = array();
+               foreach ($languages as $language) {
+                       $tempLL = \TYPO3\CMS\Core\Utility\GeneralUtility::readLLfile($fileRef, $language, $this->charSet, $errorMode);
+                       $localLanguage['default'] = $tempLL['default'];
+                       if (!isset($localLanguage[$this->lang])) {
+                               $localLanguage[$this->lang] = $localLanguage['default'];
+                       }
+                       if ($this->lang !== 'default' && isset($tempLL[$language])) {
+                               // Merge current language labels onto labels from previous language
+                               // This way we have a labels with fall back applied
+                               $localLanguage[$this->lang] = \TYPO3\CMS\Core\Utility\GeneralUtility::array_merge_recursive_overrule($localLanguage[$this->lang], $tempLL[$language], FALSE, FALSE);
+                       }
+               }
+
+               return $localLanguage;
+       }
+
+
        /*****************************************************/
        /*                                                   */
        /*  Tools                                            */
@@ -2618,4 +2671,4 @@ class PageRenderer implements \TYPO3\CMS\Core\SingletonInterface {
 }
 
 
-?>
\ No newline at end of file
+?>