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<?php
/**
* MODX Revolution
*
* Copyright 2006-2014 by MODX, LLC.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*
* @package modx
*/
/**
* The lexicon handling class. Handles all lexicon topics by loading and storing their entries into a cached array.
* Also considers database-based overrides for specific lexicon entries that preserve the originals and allow reversion.
*
* @package modx
*/
class modLexicon {
/**
* Reference to the MODX instance.
*
* @var modX $modx
* @access protected
*/
public $modx = null;
/**
* The actual language array.
*
* @todo Separate into separate arrays for each namespace (and maybe topic)
* so that no namespacing in lexicon entries is needed. Maybe keep a master
* array of entries, but then have subarrays for topic-specific referencing.
*
* @var array $_lexicon
* @access protected
*/
protected $_lexicon = array();
/**
* Directories to search for language strings in.
*
* @deprecated
* @var array $_paths
* @access protected
*/
protected $_paths = array();
/**
* An array of loaded topic strings
*
* @var array $_loadedTopics
*/
protected $_loadedTopics = array();
/**
* Creates the modLexicon instance.
*
* @constructor
* @param xPDO $modx A reference to the modX instance.
* @param array $config An array of configuration properties
*/
function __construct(xPDO &$modx,array $config = array()) {
$this->modx =& $modx;
$this->_paths = array(
'core' => $this->modx->getOption('core_path') . 'cache/lexicon/',
);
$this->_lexicon = array($this->modx->getOption('cultureKey',null,'en') => array());
$this->config = array_merge($config,array());
}
/**
* Clears the lexicon cache for the specified path.
*
* @access public
* @param string $path The path to clear.
* @return string The results of the cache clearing.
*/
public function clearCache($path = '') {
$path = 'lexicon/'.$path;
return $this->modx->cacheManager->clearCache(array($path));
}
/**
* Returns if the key exists in the lexicon.
*
* @access public
* @param string $index
* @return boolean True if exists.
*/
public function exists($index,$language = '') {
$language = !empty($language) ? $language : $this->modx->getOption('cultureKey',null,'en');
return (is_string($index) && isset($this->_lexicon[$language][$index]));
}
/**
* Accessor method for the lexicon array.
*
* @access public
* @param string $prefix If set, will only return the lexicon entries with this prefix.
* @param boolean $removePrefix If true, will strip the prefix from the returned indexes
* @param string $language
* @return array The internal lexicon.
*/
public function fetch($prefix = '',$removePrefix = false,$language = '') {
$language = !empty($language) ? $language : $this->modx->getOption('cultureKey',null,'en');
if (!empty($prefix)) {
$lex = array();
$lang = $this->_lexicon[$language];
if (is_array($lang)) {
foreach ($lang as $k => $v) {
if (strpos($k,$prefix) !== false) {
$key = $removePrefix ? str_replace($prefix,'',$k) : $k;
$lex[$key] = $v;
}
}
}
return $lex;
}
return $this->_lexicon[$language];
}
/**
* Return the cache key representing the specified lexicon topic.
*
* @access public
* @param string $namespace The namespace for the topic
* @param string $topic The topic to grab
* @param string $language The language for the topic
* @return string The cache key for the specified topic
*/
public function getCacheKey($namespace = 'core',$topic = 'default',$language = '') {
if (empty($namespace)) $namespace = 'core';
if (empty($topic)) $topic = 'default';
if (empty($language)) $language = $this->modx->getOption('cultureKey',null,'en');
return 'lexicon/'.$language.'/'.$namespace.'/'.$topic;
}
/**
* Loads a variable number of topic areas. They must reside as topicname.
* inc.php files in their proper culture directory. Can load an infinite
* number of topic areas via a dynamic number of arguments.
*
* They are loaded by language:namespace:topic, namespace:topic, or just
* topic. Examples: $modx->lexicon->load('en:core:snippet'); $modx->lexicon-
* >load ('demo:test'); $modx->lexicon->load('chunk');
*
* @access public
*/
public function load() {
$topics = func_get_args(); /* allow for dynamic number of lexicons to load */
if ($this->modx->context->get('key') == 'mgr') {
$defaultLanguage = $this->modx->getOption('manager_language',null,$this->modx->getOption('cultureKey',null,'en'));
} else {
$defaultLanguage = $this->modx->getOption('cultureKey',null,'en');
}
foreach ($topics as $topicStr) {
if (!is_string($topicStr) || $topicStr == '') continue;
if (in_array($topicStr,$this->_loadedTopics)) continue;
$nspos = strpos($topicStr,':');
$topic = str_replace('.','/',$topicStr); /** @deprecated 2.0.0 Allow for lexicon subdirs */
/* if no namespace, search all lexicons */
if ($nspos === false) {
foreach ($this->_paths as $namespace => $path) {
$entries = $this->loadCache($namespace,$topic);
if (is_array($entries)) {
if (!array_key_exists($defaultLanguage,$this->_lexicon)) $this->_lexicon[$defaultLanguage] = array();
$this->_lexicon[$defaultLanguage] = is_array($this->_lexicon[$defaultLanguage]) ? array_merge($this->_lexicon[$defaultLanguage],$entries) : $entries;
}
}
} else { /* if namespace, search specified lexicon */
$params = explode(':',$topic);
if (count($params) <= 2) {
$language = $defaultLanguage;
$namespace = $params[0];
$topic_parsed = $params[1];
} else {
$language = $params[0];
$namespace = $params[1];
$topic_parsed = $params[2];
}
$englishEntries = $language != 'en' ? $this->loadCache($namespace,$topic_parsed,'en') : false;
$entries = $this->loadCache($namespace,$topic_parsed,$language);
if (!is_array($entries)) {
if (is_string($entries) && !empty($entries)) $entries = $this->modx->fromJSON($entries);
if (empty($entries)) $entries = array();
}
if (is_array($englishEntries) && !empty($englishEntries)) {
$entries = array_merge($englishEntries,$entries);
}
if (is_array($entries)) {
$this->_loadedTopics[] = $topicStr;
if (!array_key_exists($language,$this->_lexicon)) $this->_lexicon[$language] = array();
$this->_lexicon[$language] = is_array($this->_lexicon[$language]) ? array_merge($this->_lexicon[$language], $entries) : $entries;
}
}
}
}
/**
* Loads a lexicon topic from the cache. If not found, tries to generate a
* cache file from the database.
*
* @access public
* @param string $namespace The namespace to load from. Defaults to 'core'.
* @param string $topic The topic to load. Defaults to 'default'.
* @param string $language The language to load. Defaults to 'en'.
* @return array The loaded lexicon array.
*/
public function loadCache($namespace = 'core', $topic = 'default', $language = '') {
if (empty($language)) $language = $this->modx->getOption('cultureKey',null,'en');
$key = $this->getCacheKey($namespace, $topic, $language);
$enableCache = ($namespace != 'core' && !$this->modx->getOption('cache_noncore_lexicon_topics',null,true)) ? false : true;
$cached = $this->modx->cacheManager->get($key, array(
xPDO::OPT_CACHE_KEY => $this->modx->getOption('cache_lexicon_topics_key', null, 'lexicon_topics'),
xPDO::OPT_CACHE_HANDLER => $this->modx->getOption('cache_lexicon_topics_handler', null, $this->modx->getOption(xPDO::OPT_CACHE_HANDLER)),
xPDO::OPT_CACHE_FORMAT => (integer) $this->modx->getOption('cache_lexicon_topics_format', null, $this->modx->getOption(xPDO::OPT_CACHE_FORMAT, null, xPDOCacheManager::CACHE_PHP)),
));
if (!$enableCache || $cached == null) {
$results= false;
/* load file-based lexicon */
$results = $this->getFileTopic($language,$namespace,$topic);
if ($results === false) { /* default back to en */
$results = $this->getFileTopic('en',$namespace,$topic);
if ($results === false) {
$results = array();
}
}
/* get DB overrides */
$c= $this->modx->newQuery('modLexiconEntry');
$c->innerJoin('modNamespace','Namespace');
$c->where(array(
'modLexiconEntry.topic' => $topic,
'modLexiconEntry.language' => $language,
'Namespace.name' => $namespace,
));
$c->sortby($this->modx->getSelectColumns('modLexiconEntry','modLexiconEntry','',array('name')),'ASC');
$entries= $this->modx->getCollection('modLexiconEntry',$c);
if (!empty($entries)) {
/** @var modLexiconEntry $entry */
foreach ($entries as $entry) {
$results[$entry->get('name')]= $entry->get('value');
}
}
if ($enableCache) {
$cached = $this->modx->cacheManager->generateLexiconTopic($key,$results);
} else {
$cached = $results;
}
}
if (empty($cached)) {
$this->modx->log(xPDO::LOG_LEVEL_DEBUG, "An error occurred while trying to cache {$key} (lexicon/language/namespace/topic)");
}
return $cached;
}
/**
* Get entries from file-based lexicon topic
*
* @param string $language The language to filter by.
* @param string $namespace The namespace to filter by.
* @param string $topic The topic to filter by.
* @return array An array of lexicon entries in key - value pairs for the specified filter.
*/
public function getFileTopic($language = 'en',$namespace = 'core',$topic = 'default') {
$corePath = $this->getNamespacePath($namespace);
$corePath = str_replace(array(
'{base_path}',
'{core_path}',
'{assets_path}',
),array(
$this->modx->getOption('base_path'),
$this->modx->getOption('core_path'),
$this->modx->getOption('assets_path'),
),$corePath);
$topicPath = str_replace('//','/',$corePath.'/lexicon/'.$language.'/'.$topic.'.inc.php');
$results = array();
$_lang = array();
if (file_exists($topicPath)) {
include $topicPath;
$results = $_lang;
} else {
return false;
}
return $results;
}
/**
* Get the path of the specified Namespace
*
* @param string $namespace The key of the Namespace
* @return string The path for the Namespace
*/
public function getNamespacePath($namespace = 'core') {
$corePath = $this->modx->getOption('core_path',null,MODX_CORE_PATH);
if ($namespace != 'core') {
/** @var modNamespace $namespaceObj */
$namespaceObj = $this->modx->getObject('modNamespace',$namespace);
if ($namespaceObj) {
$corePath = $namespaceObj->getCorePath();
}
}
return $corePath;
}
/**
* Get a list of available Topics when given a Language and Namespace.
*
* @param string $language The language to filter by.
* @param string $namespace The language to filter by.
* @return array An array of Topic names.
*/
public function getTopicList($language = 'en',$namespace = 'core') {
$corePath = $this->getNamespacePath($namespace);
$lexPath = str_replace('//','/',$corePath.'/lexicon/'.$language.'/');
$topics = array();
if (!is_dir($lexPath)) return $topics;
/** @var DirectoryIterator $topic */
foreach (new DirectoryIterator($lexPath) as $topic) {
if (in_array($topic,array('.','..','.svn','.git','_notes'))) continue;
if (!$topic->isReadable()) continue;
if ($topic->isFile()) {
$fileName = $topic->getFilename();
if (strpos($fileName,'.inc.php')) {
$topics[] = str_replace('.inc.php','',$fileName);
}
}
}
sort($topics);
return $topics;
}
/**
* Get a list of available languages for a Namespace.
*
* @param string $namespace The Namespace to filter by.
* @return array An array of available languages
*/
public function getLanguageList($namespace = 'core') {
$corePath = $this->getNamespacePath($namespace);
$lexPath = str_replace('//','/',$corePath.'/lexicon/');
$languages = array();
/** @var DirectoryIterator $language */
foreach (new DirectoryIterator($lexPath) as $language) {
if (in_array($language,array('.','..','.svn','.git','_notes','country'))) continue;
if (!$language->isReadable()) continue;
if ($language->isDir()) {
$languages[] = $language->getFilename();
}
}
sort($languages);
return $languages;
}
/**
* Get a lexicon string by its index.
*
* @access public
* @param string $key The key of the lexicon string.
* @param array $params An assocative array of placeholder
* keys and values to parse
* @param string $language
* @return string The text of the lexicon key, blank if not found.
*/
public function process($key,array $params = array(),$language = '') {
$language = !empty($language) ? $language : $this->modx->getOption('cultureKey',null,'en');
/* make sure key exists */
if (!is_string($key) || !isset($this->_lexicon[$language][$key])) {
$this->modx->log(xPDO::LOG_LEVEL_DEBUG,'Language string not found: "'.$key.'"');
return $key;
}
/* if params are passed, allow for parsing of [[+key]] values to strings */
return empty($params)
? $this->_lexicon[$language][$key]
: $this->_parse($this->_lexicon[$language][$key],$params);
}
/**
* Sets a lexicon key to a value. Not recommended, since doesn't query the
* database.
*
* @access public
* @param string|array $keys Either an array of array pairs of key/values or
* a key string.
* @param string $text The text to set, if the first parameter is a string.
* @param string $language The language to set the key in. Defaults to current.
*/
public function set($keys, $text = '', $language = '') {
$language = !empty($language) ? $language : $this->modx->getOption('cultureKey',null,$language);
if (is_array($keys)) {
foreach ($keys as $key => $str) {
if ($key == '') continue;
$this->_lexicon[$language][$key] = $str;
}
} else if (is_string($keys) && $keys != '') {
$this->_lexicon[$language][$keys] = $text;
}
}
/**
* Parses a lexicon string, replacing placeholders with
* specified strings.
*
* @access private
* @param string $str The string to parse
* @param array $params An associative array of keys to replace
* @return string The processed string
*/
private function _parse($str,$params) {
if (!$str) return '';
if (empty($params)) return $str;
foreach ($params as $k => $v) {
$str = str_replace('[[+'.$k.']]',$v,$str);
}
return $str;
}
/**
* Returns the total # of entries in the active lexicon
* @param string $language
* @return int
*/
public function total($language = '') {
$language = !empty($language) ? $language : $this->modx->getOption('cultureKey',null,'en');
return count($this->_lexicon[$language]);
}
/**
* Completely clears the lexicon
* @param string $language
* @return void
*/
public function clear($language = '') {
if (!empty($language)) {
$this->_lexicon[$language] = array();
} else {
$this->_lexicon = array($this->modx->getOption('cultureKey',null,'en') => array());
}
}
}