Subversion-Projekte lars-tiefland.php_share

<?php

/**

 * sfMessageSource_SQLite class file.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the BSD License.

 *

 * Copyright(c) 2004 by Qiang Xue. All rights reserved.

 *

 * To contact the author write to {@link mailto:qiang.xue@gmail.com Qiang Xue}

 * The latest version of PRADO can be obtained from:

 * {@link http://prado.sourceforge.net/}

 *

 * @author     Wei Zhuo <weizhuo[at]gmail[dot]com>

 * @version    $Id: sfMessageSource_SQLite.class.php 23810 2009-11-12 11:07:44Z Kris.Wallsmith $

 * @package    symfony

 * @subpackage i18n

 */

/**

 * sfMessageSource_SQLite class.

 *

 * Retrieve the message translation from a SQLite database.

 *

 * See the MessageSource::factory() method to instantiate this class.

 *

 * SQLite schema:

 *

 * CREATE TABLE catalogue (

 *   cat_id INTEGER PRIMARY KEY,

 *   name VARCHAR NOT NULL,

 *   source_lang VARCHAR,

 *   target_lang VARCHAR,

 *   date_created INT,

 *   date_modified INT,

 *   author VARCHAR);

 *

 * CREATE TABLE trans_unit (

 *   msg_id INTEGER PRIMARY KEY,

 *   cat_id INTEGER NOT NULL DEFAULT '1',

 *   id VARCHAR,

 *   source TEXT,

 *   target TEXT,

 *   comments TEXT,

 *   date_added INT,

 *   date_modified INT,

 *   author VARCHAR,

 *   translated INT(1) NOT NULL DEFAULT '0');

 *

 * Propel schema (in .xml format):

 *

 *  <database ...>

 *    ...

 *    <table name="catalogue">

 *     <column name="cat_id" type="integer" required="true" primaryKey="true" autoincrement="true" />

 *     <column name="name" type="varchar" size="100" />

 *     <column name="source_lang" type="varchar" size="100" />

 *     <column name="target_lang" type="varchar" size="100" />

 *     <column name="date_created" type="timestamp" />

 *     <column name="date_modified" type="timestamp" />

 *     <column name="author" type="varchar" size="255" />

 *    </table>

 *

 *    <table name="trans_unit">

 *     <column name="msg_id" type="integer" required="true" primaryKey="true" autoincrement="true" />

 *     <column name="cat_id" type="integer" />

 *       <foreign-key foreignTable="catalogue" onDelete="cascade">

 *         <reference local="cat_id" foreign="cat_id"/>

 *       </foreign-key>

 *     <column name="id" type="varchar" size="255" />

 *     <column name="source" type="longvarchar" />

 *     <column name="target" type="longvarchar" />

 *     <column name="comments" type="longvarchar" />

 *     <column name="date_created" type="timestamp" />

 *     <column name="date_modified" type="timestamp" />

 *     <column name="author" type="varchar" size="255" />

 *     <column name="translated" type="integer" />

 *    </table>

 *    ...

 *  </database>

 *

 * @author Xiang Wei Zhuo <weizhuo[at]gmail[dot]com>

 * @version v1.0, last update on Fri Dec 24 16:58:58 EST 2004

 * @package    symfony

 * @subpackage i18n

 */

class sfMessageSource_SQLite extends sfMessageSource_Database

{

  /**

   * The SQLite datasource, the filename of the database.

   * @var string

   */

  protected $source;

  /**

   * Constructor.

   * Creates a new message source using SQLite.

   * @see MessageSource::factory();

   * @param string $source SQLite datasource, in PEAR's DB DSN format.

   */

  function __construct($source)

  {

    $dsn = $this->parseDSN((string) $source);

    $this->source = $dsn['database'];

  }

  /**

   * Gets an array of messages for a particular catalogue and cultural variant.

   *

   * @param string $variant the catalogue name + variant

   * @return array translation messages.

   */

  public function &loadData($variant)

  {

    $variant = sqlite_escape_string($variant);

    $statement =

      "SELECT t.id, t.source, t.target, t.comments

        FROM trans_unit t, catalogue c

        WHERE c.cat_id =  t.cat_id

          AND c.name = '{$variant}'

        ORDER BY id ASC";

    $db = sqlite_open($this->source);

    $rs = sqlite_query($statement, $db);

    $result = array();

    while($row = sqlite_fetch_array($rs, SQLITE_NUM))

    {

      $source = $row[1];

      $result[$source][] = $row[2]; //target

      $result[$source][] = $row[0]; //id

      $result[$source][] = $row[3]; //comments

    }

    sqlite_close($db);

    return $result;

  }

  /**

   * Gets the last modified unix-time for this particular catalogue+variant.

   * We need to query the database to get the date_modified.

   *

   * @param string $source catalogue+variant

   * @return int last modified in unix-time format.

   */

  protected function getLastModified($source)

  {

    $source = sqlite_escape_string($source);

    $db = sqlite_open($this->source);

    $rs = sqlite_query("SELECT date_modified FROM catalogue WHERE name = '{$source}'", $db);

    $result = $rs ? intval(sqlite_fetch_single($rs)) : 0;

    sqlite_close($db);

    return $result;

  }

  /**

   * Checks if a particular catalogue+variant exists in the database.

   *

   * @param string $variant catalogue+variant

   * @return boolean true if the catalogue+variant is in the database, false otherwise.

   */

  public function isValidSource($variant)

  {

    $variant = sqlite_escape_string($variant);

    $db = sqlite_open($this->source);

    $rs = sqlite_query("SELECT COUNT(*) FROM catalogue WHERE name = '{$variant}'", $db);

    $result = $rs && intval(sqlite_fetch_single($rs));

    sqlite_close($db);

    return $result;

  }

  /**

   * Retrieves catalogue details, array($cat_id, $variant, $count).

   *

   * @param string $catalogue catalogue

   * @return array catalogue details, array($cat_id, $variant, $count).

   */

  protected function getCatalogueDetails($catalogue = 'messages')

  {

    if (empty($catalogue))

    {

      $catalogue = 'messages';

    }

    $variant = $catalogue.'.'.$this->culture;

    $name = sqlite_escape_string($this->getSource($variant));

    $db = sqlite_open($this->source);

    $rs = sqlite_query("SELECT cat_id FROM catalogue WHERE name = '{$name}'", $db);

    if (sqlite_num_rows($rs) != 1)

    {

      return false;

    }

    $cat_id = intval(sqlite_fetch_single($rs));

    // first get the catalogue ID

    $rs = sqlite_query("SELECT count(msg_id) FROM trans_unit WHERE cat_id = {$cat_id}", $db);

    $count = intval(sqlite_fetch_single($rs));

    sqlite_close($db);

    return array($cat_id, $variant, $count);

  }

  /**

   * Updates the catalogue last modified time.

   *

   * @return boolean true if updated, false otherwise.

   */

  protected function updateCatalogueTime($cat_id, $variant, $db)

  {

    $time = time();

    $result = sqlite_query("UPDATE catalogue SET date_modified = {$time} WHERE cat_id = {$cat_id}", $db);

    if ($this->cache)

    {

      $this->cache->remove($variant.':'.$this->culture);

    }

    return $result;

  }

  /**

   * Saves the list of untranslated blocks to the translation source.

   * If the translation was not found, you should add those

   * strings to the translation source via the <b>append()</b> method.

   *

   * @param string $catalogue the catalogue to add to

   * @return boolean true if saved successfuly, false otherwise.

   */

  function save($catalogue = 'messages')

  {

    $messages = $this->untranslated;

    if (count($messages) <= 0)

    {

      return false;

    }

    $details = $this->getCatalogueDetails($catalogue);

    if ($details)

    {

      list($cat_id, $variant, $count) = $details;

    }

    else

    {

      return false;

    }

    if ($cat_id <= 0)

    {

      return false;

    }

    $inserted = 0;

    $db = sqlite_open($this->source);

    $time = time();

    foreach ($messages as $message)

    {

      $message = sqlite_escape_string($message);

      if (sqlite_query("INSERT INTO trans_unit (cat_id, id, source, date_added) VALUES ({$cat_id}, {$count}, '{$message}', $time)", $db))

      {

        $count++;

        $inserted++;

      }

    }

    if ($inserted > 0)

    {

      $this->updateCatalogueTime($cat_id, $variant, $db);

    }

    sqlite_close($db);

    return $inserted > 0;

  }

  /**

   * Updates the translation.

   *

   * @param string $text      the source string.

   * @param string $target    the new translation string.

   * @param string $comments  comments

   * @param string $catalogue the catalogue of the translation.

   * @return boolean true if translation was updated, false otherwise.

   */

  function update($text, $target, $comments, $catalogue = 'messages')

  {

    $details = $this->getCatalogueDetails($catalogue);

    if ($details)

    {

      list($cat_id, $variant, $count) = $details;

    }

    else

    {

      return false;

    }

    $comments = sqlite_escape_string($comments);

    $target = sqlite_escape_string($target);

    $text = sqlite_escape_string($text);

    $time = time();

    $db = sqlite_open($this->source);

    sqlite_query("UPDATE trans_unit SET target = '{$target}', comments = '{$comments}', date_modified = '{$time}' WHERE cat_id = {$cat_id} AND source = '{$text}'", $db);

    if (sqlite_changes($db))

    {

      $this->updateCatalogueTime($cat_id, $variant, $db);

      $updated = true;

    }

    else

    {

      $updated = false;

    }

    sqlite_close($db);

    return $updated;

  }

  /**

   * Deletes a particular message from the specified catalogue.

   *

   * @param string  $message    the source message to delete.

   * @param string  $catalogue  the catalogue to delete from.

   * @return boolean true if deleted, false otherwise.

   */

  function delete($message, $catalogue = 'messages')

  {

    $details = $this->getCatalogueDetails($catalogue);

    if ($details)

    {

      list($cat_id, $variant, $count) = $details;

    }

    else

    {

      return false;

    }

    $db = sqlite_open($this->source);

    $text = sqlite_escape_string($message);

    sqlite_query("DELETE FROM trans_unit WHERE cat_id = {$cat_id} AND source = '{$message}'", $db);

    if (sqlite_changes($db))

    {

      $this->updateCatalogueTime($cat_id, $variant, $db);

      $deleted = true;

    }

    else

    {

      $deleted = false;

    }

    sqlite_close($db);

    return $deleted;

  }

  /**

   * Returns a list of catalogue as key and all it variants as value.

   *

   * @return array list of catalogues

   */

  function catalogues()

  {

    $db = sqlite_open($this->source);

    $statement = 'SELECT name FROM catalogue ORDER BY name';

    $rs = sqlite_query($statement, $db);

    $result = array();

    while ($row = sqlite_fetch_array($rs, SQLITE_NUM))

    {

      $details = explode('.', $row[0]);

      if (!isset($details[1]))

      {

        $details[1] = null;

      }

      $result[] = $details;

    }

    sqlite_close($db);

    return $result;

  }

}