LanguageService.php

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<?php
namespace TYPO3\CMS\Lang;

use TYPO3\CMS\Core\Utility\ArrayUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;

class LanguageService {

    public $lang = 'default';

    public $charSet = 'utf-8';

    public $charSetArray = array();

    public $typo3_help_url = 'http://typo3.org/documentation/document-library/';

    public $debugKey = FALSE;

    public $moduleLabels = array();

    public $LL_files_cache = array();

    public $LL_labels_cache = array();

    public $csConvObj;

    public $parserFactory;

    protected $languageDependencies = array();

    public function init($lang) {
        // Initialize the conversion object:
        $this->csConvObj = GeneralUtility::makeInstance('TYPO3\CMS\Core\Charset\CharsetConverter');
        $this->charSetArray = $this->csConvObj->charSetArray;
        // Initialize the parser factory object
        $this->parserFactory = GeneralUtility::makeInstance('TYPO3\CMS\Core\Localization\LocalizationFactory');
        // Find the requested language in this list based
        // on the $lang key being inputted to this function.
        $locales = GeneralUtility::makeInstance('TYPO3\CMS\Core\Localization\Locales');
        // Language is found. Configure it:
        if (in_array($lang, $locales->getLocales())) {
            // The current language key
            $this->lang = $lang;
            $this->languageDependencies[] = $this->lang;
            foreach ($locales->getLocaleDependencies($this->lang) as $language) {
                $this->languageDependencies[] = $language;
            }
        }
        if ($GLOBALS['TYPO3_CONF_VARS']['BE']['lang']['debug']) {
            $this->debugKey = TRUE;
        }
    }

    public function getParserFactory() {
        return $this->parserFactory;
    }

    public function addModuleLabels($arr, $prefix) {
        if (is_array($arr)) {
            foreach ($arr as $k => $larr) {
                if (!isset($this->moduleLabels[$k])) {
                    $this->moduleLabels[$k] = array();
                }
                if (is_array($larr)) {
                    foreach ($larr as $l => $v) {
                        $this->moduleLabels[$k][$prefix . $l] = $v;
                    }
                }
            }
        }
    }

    public function makeEntities($str) {
            // Convert string back again, but using the full entity conversion:
        return $this->csConvObj->utf8_to_entities($str);
    }

    public function JScharCode($str) {
        GeneralUtility::logDeprecatedFunction();

        // Convert the UTF-8 string into a array of char numbers:
        $nArr = $this->csConvObj->utf8_to_numberarray($str);
        return 'String.fromCharCode(' . implode(',', $nArr) . ')';
    }

    public function debugLL($value) {
        return $this->debugKey ? '[' . $value . ']' : '';
    }

    public function getLL($index, $hsc = FALSE) {
            // Get Local Language
        if (isset($GLOBALS['LOCAL_LANG'][$this->lang][$index][0]['target'])) {
            $output = $GLOBALS['LOCAL_LANG'][$this->lang][$index][0]['target'];
        } else {
            $output = $GLOBALS['LOCAL_LANG']['default'][$index][0]['target'];
        }
        if ($hsc) {
            $output = htmlspecialchars($output);
        }
        return $output . $this->debugLL($index);
    }

    public function getLLL($index, $localLanguage, $hsc = FALSE) {
            // Get Local Language. Special handling for all extensions that
            // read PHP LL files and pass arrays here directly.
        $value = is_string($localLanguage[$this->lang][$index]) ?
            $localLanguage[$this->lang][$index] :
            $localLanguage[$this->lang][$index][0]['target'];
            // Fallback to default language
        if (trim($value) === '') {
            $value = is_string($localLanguage['default'][$index]) ?
                $localLanguage['default'][$index] :
                $localLanguage['default'][$index][0]['target'];
        }
        if ($hsc) {
            $value = htmlspecialchars($value);
        }
        return $value . $this->debugLL($index);
    }

    public function sL($input, $hsc = FALSE) {
        $identifier = $input . '_' . (int)$hsc . '_' . (int)$this->debugKey;
        if (isset($this->LL_labels_cache[$this->lang][$identifier])) {
            return $this->LL_labels_cache[$this->lang][$identifier];
        }
        if (strpos($input, 'LLL:') === 0) {
            $restStr = trim(substr($input, 4));
            $extPrfx = '';
                // ll-file refered to is found in an extension.
            if (strpos($restStr, 'EXT:') === 0) {
                $restStr = trim(substr($restStr, 4));
                $extPrfx = 'EXT:';
            }
            $parts = explode(':', $restStr);
            $parts[0] = $extPrfx . $parts[0];
                // Getting data if not cached
            if (!isset($this->LL_files_cache[$parts[0]])) {
                $this->LL_files_cache[$parts[0]] = $this->readLLfile($parts[0]);
                    // If the current language is found in another file, load that as well:
                $lFileRef = $this->localizedFileRef($parts[0]);
                if ($lFileRef && $this->LL_files_cache[$parts[0]][$this->lang] === 'EXT') {
                    $tempLL = $this->readLLfile($lFileRef);
                    $this->LL_files_cache[$parts[0]][$this->lang] = $tempLL[$this->lang];
                }
            }
            $output = $this->getLLL($parts[1], $this->LL_files_cache[$parts[0]]);
        } else {
                // Use a constant non-localizable label
            $output = $input;
        }
        if ($hsc) {
            $output = htmlspecialchars($output, ENT_COMPAT, 'UTF-8', FALSE);
        }
        $output .= $this->debugLL($input);
        $this->LL_labels_cache[$this->lang][$identifier] = $output;
        return $output;
    }

    public function loadSingleTableDescription($table) {
            // First the 'table' cannot already be loaded in [columns]
            // and secondly there must be a references to locallang files available in [refs]
        if (is_array($GLOBALS['TCA_DESCR'][$table]) && !isset($GLOBALS['TCA_DESCR'][$table]['columns']) && is_array($GLOBALS['TCA_DESCR'][$table]['refs'])) {
                // Init $TCA_DESCR for $table-key
            $GLOBALS['TCA_DESCR'][$table]['columns'] = array();
                // Get local-lang for each file in $TCA_DESCR[$table]['refs'] as they are ordered.
            foreach ($GLOBALS['TCA_DESCR'][$table]['refs'] as $llfile) {
                $localLanguage = $this->includeLLFile($llfile, 0, 1);
                    // Traverse all keys
                if (is_array($localLanguage['default'])) {
                    foreach ($localLanguage['default'] as $lkey => $lVal) {
                            // Exploding by '.':
                            // 0-n => fieldname,
                            // n+1 => type from (alttitle, description, details, syntax, image_descr,image,seeAlso),
                            // n+2 => special instruction, if any
                        $keyParts = explode('.', $lkey);
                        $keyPartsCount = count($keyParts);
                            // Check if last part is special instruction
                            // Only "+" is currently supported
                        $specialInstruction = $keyParts[$keyPartsCount - 1] === '+';
                        if ($specialInstruction) {
                            array_pop($keyParts);
                        }
                            // If there are more than 2 parts, get the type from the last part
                            // and merge back the other parts with a dot (.)
                            // Otherwise just get type and field name straightaway
                        if ($keyPartsCount > 2) {
                            $type = array_pop($keyParts);
                            $fieldName = implode('.', $keyParts);
                        } else {
                            $fieldName = $keyParts[0];
                            $type = $keyParts[1];
                        }
                            // Detecting 'hidden' labels, converting to normal fieldname
                        if ($fieldName === '_') {
                            $fieldName = '';
                        }
                        if ($fieldName !== '' && $fieldName[0] === '_') {
                            $fieldName = substr($fieldName, 1);
                        }
                            // Append label
                        $label = $lVal[0]['target'] ? :
                            $lVal[0]['source'];
                        if ($specialInstruction) {
                            $GLOBALS['TCA_DESCR'][$table]['columns'][$fieldName][$type] .= LF . $label;
                        } else {
                                // Substitute label
                            $GLOBALS['TCA_DESCR'][$table]['columns'][$fieldName][$type] = $label;
                        }
                    }
                }
            }
        }
    }

    public function includeLLFile($fileRef, $setGlobal = TRUE, $mergeLocalOntoDefault = FALSE) {
        $globalLanguage = array();
            // Get default file
        $localLanguage = $this->readLLfile($fileRef);
        if (is_array($localLanguage) && !empty($localLanguage)) {
                // it depends on, whether we should return the result or set it in the global $LOCAL_LANG array
            if ($setGlobal) {
                $globalLanguage = (array)$GLOBALS['LOCAL_LANG'];
                ArrayUtility::mergeRecursiveWithOverrule($globalLanguage, $localLanguage);
            } else {
                $globalLanguage = $localLanguage;
            }
                // Localized addition?
            $lFileRef = $this->localizedFileRef($fileRef);
            if ($lFileRef && (string) $globalLanguage[$this->lang] === 'EXT') {
                $localLanguage = $this->readLLfile($lFileRef);
                ArrayUtility::mergeRecursiveWithOverrule($globalLanguage, $localLanguage);
            }
                // Merge local onto default
            if ($mergeLocalOntoDefault && $this->lang !== 'default' && is_array($globalLanguage[$this->lang]) && is_array($globalLanguage['default'])) {
                    // array_merge can be used so far the keys are not
                    // numeric - which we assume they are not...
                $globalLanguage['default'] = array_merge($globalLanguage['default'], $globalLanguage[$this->lang]);
                unset($globalLanguage[$this->lang]);
            }
        }
            // Return value if not global is set.
        if (!$setGlobal) {
            return $globalLanguage;
        } else {
            $GLOBALS['LOCAL_LANG'] = $globalLanguage;
            return NULL;
        }
    }

    protected function readLLfile($fileRef) {
        if ($this->lang !== 'default') {
            $languages = array_reverse($this->languageDependencies);
        } else {
            $languages = array('default');
        }
        $localLanguage = array();
        foreach ($languages as $language) {
            $tempLL = GeneralUtility::readLLfile($fileRef, $language, $this->charSet);
            $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
                ArrayUtility::mergeRecursiveWithOverrule($localLanguage[$this->lang], $tempLL[$language], TRUE, FALSE);
            }
        }
        return $localLanguage;
    }

    protected function localizedFileRef($fileRef) {
        if ($this->lang !== 'default' && substr($fileRef, -4) === '.php') {
            return substr($fileRef, 0, -4) . '.' . $this->lang . '.php';
        } else {
            return NULL;
        }
    }

    public function overrideLL($index, $value, $overrideDefault = TRUE) {
        if (!isset($GLOBALS['LOCAL_LANG'])) {
            $GLOBALS['LOCAL_LANG'] = array();
        }
        $GLOBALS['LOCAL_LANG'][$this->lang][$index][0]['target'] = $value;
        if ($overrideDefault) {
            $GLOBALS['LOCAL_LANG']['default'][$index][0]['target'] = $value;
        }
    }
}