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<?php
/**
* File translation.str_mgmt.php
*
* Additional functions for Translation class
*
* Functions allowing user to create the new language, translation for specific
* strings and full management of the languages database.
*
* @author Wojciech Zieliński <voyteck@caffe.com.pl>
* @author Lorenzo Alberton <l dot alberton at quipo dot it>
* @version 1.3
* @access public
* @package Translation
*/
/**
* require PEAR::DB
*/
require_once 'DB.php';
/**
* helper method
*/
function setDefaultTableDefinitions($LangID, $CustomTables)
{
//set defaults
$TableDefinitions = array(
'langsavail' => array(
'name' => 'tr_langsavail',
'lang_id' => 'lang_id',
'lang_name' => 'name',
'metatags' => 'metatags',
'errortext' => 'errortext'
),
'strings_'.$LangID => array(
'name' => 'strings_'.$LangID,
'page_id' => 'page_id',
'string_id' => 'string_id',
'string' => 'string'
)
);
if (is_array($CustomTables['langsavail'])) {
$TableDefinitions['langsavail']['name'] = isset($CustomTables['langsavail']['name']) ? $CustomTables['langsavail']['name'] : 'tr_langsavail';
$TableDefinitions['langsavail']['lang_id'] = isset($CustomTables['langsavail']['lang_id']) ? $CustomTables['langsavail']['lang_id'] : 'lang_id';
$TableDefinitions['langsavail']['lang_name'] = isset($CustomTables['langsavail']['lang_name']) ? $CustomTables['langsavail']['lang_name'] : 'lang_name';
$TableDefinitions['langsavail']['metatags'] = isset($CustomTables['langsavail']['metatags']) ? $CustomTables['langsavail']['metatags'] : 'metatags';
$TableDefinitions['langsavail']['errortext'] = isset($CustomTables['langsavail']['errortext']) ? $CustomTables['langsavail']['errortext'] : 'errortext';
} elseif (!empty($CustomTables['langsavail'])) {
$TableDefinitions['langsavail']['name'] = $CustomTables['langsavail'];
}
if (is_array($CustomTables['strings_'.$LangID])) {
$TableDefinitions['strings_'.$LangID]['name'] = isset($CustomTables['strings_'.$LangID]['name']) ? $CustomTables['strings_'.$LangID]['name'] : 'strings_'.$LangID;
$TableDefinitions['strings_'.$LangID]['page_id'] = isset($CustomTables['strings_'.$LangID]['page_id']) ? $CustomTables['strings_'.$LangID]['page_id'] : 'page_id';
$TableDefinitions['strings_'.$LangID]['string_id'] = isset($CustomTables['strings_'.$LangID]['string_id']) ? $CustomTables['strings_'.$LangID]['string_id'] : 'string_id';
$TableDefinitions['strings_'.$LangID]['string'] = isset($CustomTables['strings_'.$LangID]['string']) ? $CustomTables['strings_'.$LangID]['string'] : 'string';
} elseif (!empty($CustomTables['strings_'.$LangID])) {
$TableDefinitions['strings_'.$LangID]['name'] = $CustomTables['strings_'.$LangID];
}
return $TableDefinitions;
}
/**
* New language creation
*
* Creates new language in the system.
* Creates lang entry in the languages table and the table for language strings.
* If other langs have been created before and their tables were filled with
* strings, function addTranslation should be executed for each of the added
* strings just after calling this function and before using the Translation class
* for any purpose.
*
* @param string $LangID Language identifier
* @param string $LangName Language name - store the language name of the lang,
* possibly in the language described. This name can be later
* retrieved by calling getLangName and getOtherLangs methods
* and used for hyperlinks changing the site language.
* @param string $METATags Tags that may describe the language codepage etc.
* These tags can be retrieved by calling getMetaTags method.
* @param string $pear_DSN PEAR DSN string for database connection
* @param array $CustomTables Custom table definitions
* @return mixed Return 1 if everything went OK, a PEAR::DB_Error object if not.
*/
function createNewLang($LangID, $LangName, $METATags, $pear_DSN, $CustomTables=0)
{
$TableDefinitions = setDefaultTableDefinitions($LangID, $CustomTables);
$db = DB::connect($pear_DSN);
if (DB::isError($db)) {
return $db;
}
$query = sprintf('INSERT INTO %s (%s, %s, %s) VALUES ("%s", "%s", "%s")',
$TableDefinitions['langsavail']['name'],
$TableDefinitions['langsavail']['lang_id'],
$TableDefinitions['langsavail']['lang_name'],
$TableDefinitions['langsavail']['metatags'],
addslashes($LangID),
addslashes($LangName),
addslashes($METATags)
);
$result = $db->query($query);
if (DB::isError($result)) {
return $result;
}
//check if the table already exists
$exists = false;
$res = $db->query('SHOW TABLES');
if (DB::isError($res)) {
return $res;
}
while ($row = $res->fetchRow()) {
if ($row[0] == 'tr_strings_'.$LangID) {
$exists = true;
break;
}
}
if (!$exists) {
$query = 'CREATE TABLE '. $TableDefinitions['strings_'.$LangID]['name'] .'('
. $TableDefinitions['strings_'.$LangID]['page_id'] .' VARCHAR(16) default NULL, '
. $TableDefinitions['strings_'.$LangID]['string_id'].' VARCHAR(32) NOT NULL, '
. $TableDefinitions['strings_'.$LangID]['string'] .' TEXT, '
.'UNIQUE KEY page_id ('.$TableDefinitions['strings_'.$LangID]['page_id'].', '
.$TableDefinitions['strings_'.$LangID]['string_id'].'))';
$result = $db->query($query);
if (DB::isError($result)) {
$query = sprintf('DELETE FROM %s WHERE %s="%s"',
$TableDefinitions['langsavail']['name'],
$TableDefinitions['langsavail']['lang_id'],
addslashes($LangID)
);
$delresult = $db->query($query);
return $result;
}
}
return 1;
}
/**
* Language removal
*
* Removes language from system.
* This function should be used carefully - it will permanently remove all the
* strings that has been added to the language table by dropping this table.
* If other langs are stored in the table, then only this lang column will be dropped.
*
* @param string $LangID Language identifier
* @param string $pear_DSN PEAR DSN string for database connection
* @param array $CustomTables Custom table definitions
* @param boolean $force If true, the table is dropped without checks
* @return mixed Return 1 if everything went OK, a PEAR::DB_Error object if not.
*/
function removeLang($LangID, $pear_DSN, $CustomTables=0, $force=false)
{
$db = DB::connect($pear_DSN);
if (DB::isError($db)) {
return $db;
}
$TableDefinitions = setDefaultTableDefinitions($LangID, $CustomTables);
if (!$force) {
//check if other langs are stored in this table
//'DESCRIBE' == 'SHOW COLUMNS FROM'
$res = $db->query('DESCRIBE '.$TableDefinitions['strings_'.$LangID]['name']);
if (DB::isError($res)) {
return $res;
}
if ($res->numRows() > 3) {
$query = 'ALTER TABLE '. $TableDefinitions['strings_'.$LangID]['name']
.' DROP COLUMN '. $TableDefinitions['strings_'.$LangID]['string'];
$res = $db->query('DESCRIBE '.$TableDefinitions['strings_'.$LangID]['name']);
if (DB::isError($res)) {
return $res;
}
return 1;
}
}
$result = $db->query('DROP TABLE '.$TableDefinitions['strings_'.$LangID]['name']);
if (DB::isError($result)) {
return $result;
}
$query = sprintf('DELETE FROM %s WHERE %s="%s"',
$TableDefinitions['langsavail']['name'],
$TableDefinitions['langsavail']['lang_id'],
$LangID);
$result = $db->query($query);
if (DB::isError($result)) {
return $result;
}
return 1;
}
/**
* Translation adding
* Adds string to one or more language tables.
*
* @param string $PageID page identifier. Might be "" if the string is to be
* available from any page, independendly from translation
* object creation parameters.
* @param string $StringID string identifier. Must be unique for the same PageID
* and strings that were created without PageID's.
* This rule must be respected to prevent ambiguities.
* @param array $String array of strings - the array keys should be languages id's,
* the values - the sttrings in these languages - e.g.:
* ("en"->"English text", "pl"->"Tekst polski", ...)
* @param string $pear_DSN PEAR DSN string for database connection
* @param array $CustomTables Custom table definitions
* @return mixed Return 1 if everything went OK, a PEAR::DB_Error object if not.
*/
function addTranslation($PageID, $StringID, $String, $pear_DSN, $CustomTables=0)
{
$db = DB::connect($pear_DSN);
if (DB::isError($db)) {
return $db;
}
$TableDefinitions = array();
$langs = array_keys($String);
foreach ($langs as $aLang) {
$TableDefinitions = array_merge_recursive(
$TableDefinitions,
setDefaultTableDefinitions($aLang, $CustomTables)
);
}
foreach ($String as $LangID => $Text) {
$data[] = array($TableDefinitions['strings_'.$LangID]['name'], $Text);
}
$query = sprintf('INSERT INTO ! (%s, %s, %s) VALUES ("%s", "%s", ?)',
$TableDefinitions['strings_'.$LangID]['page_id'],
$TableDefinitions['strings_'.$LangID]['string_id'],
$TableDefinitions['strings_'.$LangID]['string'],
addslashes($PageID),
addslashes($StringID)
);
$result = $db->executeMultiple(($db->prepare($query)), $data);
if (DB::isError($result)) {
return $result;
}
return 1;
}
/**
* Translation removal
*
* Removes string from all of string tables
* @param string $PageID page identifier.
* @param string $StringID string identifier.
* @param string $pear_DSN PEAR DSN string for database connection
* @param array $CustomTables Custom table definitions
* @return mixed Return 1 if everything went OK, a PEAR::DB_Error object if not.
*/
function removeTranslation($PageID, $StringID, $pear_DSN, $CustomTables=0)
{
$db = DB::connect($pear_DSN);
if (DB::isError($db)) {
return $db;
}
$result = $db->query('SELECT '. $TableDefinitions['langsavail']['lang_id']
.' FROM '. $TableDefinitions['langsavail']['name']);
if (DB::isError($result)) {
return $result;
}
while ($row = $result->fetchRow()) {
$languages[] = $row[0];
}
$TableDefinitions = array();
foreach ($langs as $LangID) {
$TableDefinitions = array_merge_recursive(
$TableDefinitions,
setDefaultTableDefinitions($LangID, $CustomTables)
);
$query = sprintf('DELETE FROM %s WHERE %s="%s" AND %s="%s"',
$TableDefinitions['strings_'.$LangID]['name'],
$TableDefinitions['strings_'.$LangID]['page_id'],
addslashes($PageID),
$TableDefinitions['strings_'.$LangID]['string_id'],
addslashes($StringID)
);
$result = $db->query($query);
if (DB::isError($result)) {
return $result;
}
}
return 1;
}
?>
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