includes/lang.php
author Dan
Wed, 26 Dec 2007 00:37:26 -0500
changeset 334 c72b545f1304
parent 243 a7d0f2711df1
child 335 67bd3121a12e
permissions -rw-r--r--
More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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<?php
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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 * Version 1.1.1
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 * Copyright (C) 2006-2007 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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/**
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 * Language class - processes, stores, and retrieves language strings.
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 * @package Enano
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 * @subpackage Localization
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 * @copyright 2007 Dan Fuhry
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 * @license GNU General Public License
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 */
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class Language
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{
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  /**
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   * The numerical ID of the loaded language.
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   * @var int
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   */
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  var $lang_id;
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  /**
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   * The ISO-639-3 code for the loaded language. This should be grabbed directly from the database.
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   * @var string
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   */
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  var $lang_code;
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  /**
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   * Used to track when a language was last changed, to allow browsers to cache language data
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   * @var int
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   */
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  var $lang_timestamp;
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  /**
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   * Will be an object that holds an instance of the class configured with the site's default language. Only instanciated when needed.
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   * @var object
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   */
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  var $default;
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  /**
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   * The list of loaded strings.
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   * @var array
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   * @access private
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   */
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  var $strings = array();
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  /**
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   * Constructor.
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   * @param int|string Language ID or code to load.
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   */
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  function __construct($lang)
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  {
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    global $db, $session, $paths, $template, $plugins; // Common objects
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    if ( defined('IN_ENANO_INSTALL') )
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    {
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      // special case for the Enano installer: it will load its own strings from a JSON file and just use this API for fetching and templatizing them.
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      $this->lang_id   = 1;
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      $this->lang_code = $lang;
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      return true;
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    }
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    if ( is_string($lang) )
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    {
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      $sql_col = 'lang_code="' . $db->escape($lang) . '"';
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    }
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    else if ( is_int($lang) )
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    {
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      $sql_col = 'lang_id=' . $lang . '';
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    }
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    else
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    {
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      $db->_die('lang.php - attempting to pass invalid value to constructor');
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    }
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    $lang_default = ( $x = getConfig('default_language') ) ? intval($x) : '\'def\'';
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    $q = $db->sql_query("SELECT lang_id, lang_code, last_changed, ( lang_id = $lang_default ) AS is_default FROM " . table_prefix . "language WHERE $sql_col OR lang_id = $lang_default ORDER BY is_default DESC LIMIT 1;");
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    if ( !$q )
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      $db->_die('lang.php - main select query');
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    if ( $db->numrows() < 1 )
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      $db->_die('lang.php - There are no languages installed');
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    $row = $db->fetchrow();
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    $this->lang_id   = intval( $row['lang_id'] );
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    $this->lang_code = $row['lang_code'];
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    $this->lang_timestamp = $row['last_changed'];
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  }
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  /**
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   * PHP 4 constructor.
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   * @param int|string Language ID or code to load.
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   */
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  function Language($lang)
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  {
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    $this->__construct($lang);
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  }
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  /**
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   * Fetches language strings from the database, or a cache file if it's available.
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   * @param bool If true (default), allows the cache to be used.
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   */
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  function fetch($allow_cache = true)
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  {
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    global $db, $session, $paths, $template, $plugins; // Common objects
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    $lang_file = ENANO_ROOT . "/cache/lang_{$this->lang_id}.php";
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    // Attempt to load the strings from a cache file
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    if ( file_exists($lang_file) && $allow_cache )
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    {
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      // Yay! found it
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      $this->load_cache_file($lang_file);
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    }
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    else
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    {
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      // No cache file - select and retrieve from the database
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      $q = $db->sql_unbuffered_query("SELECT string_category, string_name, string_content FROM " . table_prefix . "language_strings WHERE lang_id = {$this->lang_id};");
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      if ( !$q )
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        $db->_die('lang.php - selecting language string data');
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      if ( $row = $db->fetchrow() )
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      {
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        $strings = array();
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        do
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        {
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          $cat =& $row['string_category'];
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          if ( !is_array($strings[$cat]) )
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          {
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            $strings[$cat] = array();
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          }
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          $strings[$cat][ $row['string_name'] ] = $row['string_content'];
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        }
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        while ( $row = $db->fetchrow() );
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        // all done fetching
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        $this->merge($strings);
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      }
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      else
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      {
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        if ( !defined('ENANO_ALLOW_LOAD_NOLANG') )
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          $db->_die('lang.php - No strings for language ' . $this->lang_code);
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      }
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    }
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  }
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  /**
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   * Loads a file from the disk cache (treated as PHP) and merges it into RAM.
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   * @param string File to load
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   */
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  function load_cache_file($file)
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  {
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    global $db, $session, $paths, $template, $plugins; // Common objects
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    // We're using eval() here because it makes handling scope easier.
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    if ( !file_exists($file) )
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      $db->_die('lang.php - requested cache file doesn\'t exist');
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    $contents = file_get_contents($file);
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    $contents = preg_replace('/([\s]*)<\?php/', '', $contents);
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    @eval($contents);
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    if ( !isset($lang_cache) || ( isset($lang_cache) && !is_array($lang_cache) ) )
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      $db->_die('lang.php - the cache file is invalid (didn\'t set $lang_cache as an array)');
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    $this->merge($lang_cache);
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  }
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  /**
243
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   * Loads a JSON language file and parses the strings into RAM. Will use the cache if possible, but stays far away from the database,
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   * which we assume doesn't exist yet.
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   */
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  function load_file($file)
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  {
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    global $db, $session, $paths, $template, $plugins; // Common objects
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    if ( !file_exists($file) )
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      $db->_die('lang.php - requested JSON file doesn\'t exist');
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    $contents = trim(@file_get_contents($file));
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    if ( empty($contents) )
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      $db->_die('lang.php - empty language file...');
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    // Trim off all text before and after the starting and ending braces
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    $contents = preg_replace('/^([^{]+)\{/', '{', $contents);
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    $contents = preg_replace('/\}([^}]+)$/', '}', $contents);
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    $contents = trim($contents);
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    if ( empty($contents) )
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      $db->_die('lang.php - no meat to the language file...');
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    $checksum = md5($contents);
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    if ( file_exists("./cache/lang_json_{$checksum}.php") )
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    {
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      $this->load_cache_file("./cache/lang_json_{$checksum}.php");
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    }
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    else
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    {
334
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      $langdata = enano_json_decode($contents);
243
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      if ( !is_array($langdata) )
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        $db->_die('lang.php - invalid language file');
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      if ( !isset($langdata['categories']) || !isset($langdata['strings']) )
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        $db->_die('lang.php - language file does not contain the proper items');
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      $this->merge($langdata['strings']);
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      $lang_file = "./cache/lang_json_{$checksum}.php";
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      $handle = @fopen($lang_file, 'w');
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      if ( !$handle )
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        // Couldn't open the file. Silently fail and let the strings come from RAM.
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        return false;
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      // The file's open, that means we should be good.
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      fwrite($handle, '<?php
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// This file was generated automatically by Enano. You should not edit this file because any changes you make
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// to it will not be visible in the ACP and all changes will be lost upon any changes to strings in the admin panel.
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$lang_cache = ');
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      $exported = $this->var_export_string($this->strings);
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      if ( empty($exported) )
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        // Ehh, that's not good
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        $db->_die('lang.php - load_file(): var_export_string() failed');
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   247
      
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      fwrite($handle, $exported . '; ?>');
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   249
      
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
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      // Clean up
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      unset($exported, $langdata);
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a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
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      // Done =)
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      fclose($handle);
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    }
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  }
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  /**
205
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   * Merges a standard language assoc array ($arr[cat][stringid]) with the master in RAM.
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   * @param array
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   */
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  function merge($strings)
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  {
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    // This is stupidly simple.
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    foreach ( $strings as $cat_id => $contents )
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    {
243
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      if ( !isset($this->strings[$cat_id]) || ( isset($this->strings[$cat_id]) && !is_array($this->strings[$cat_id]) ) )
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        $this->strings[$cat_id] = array();
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      foreach ( $contents as $string_id => $string )
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      {
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        $this->strings[$cat_id][$string_id] = $string;
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   273
      }
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    }
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  }
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  /**
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   * Imports a JSON-format language file into the database and merges with current strings.
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   * @param string Path to the JSON file to load
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   */
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  function import($file)
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  {
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    global $db, $session, $paths, $template, $plugins; // Common objects
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   286
    if ( !file_exists($file) )
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   287
      $db->_die('lang.php - can\'t import language file: string file doesn\'t exist');
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   288
    
241
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    if ( $this->lang_id == 0 )
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      $db->_die('lang.php - BUG: trying to perform import when $lang->lang_id == 0');
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   291
    
205
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    $contents = trim(@file_get_contents($file));
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   293
    
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   294
    if ( empty($contents) )
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   295
      $db->_die('lang.php - can\'t load the contents of the language file');
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   296
    
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   297
    // Trim off all text before and after the starting and ending braces
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   298
    $contents = preg_replace('/^([^{]+)\{/', '{', $contents);
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   299
    $contents = preg_replace('/\}([^}]+)$/', '}', $contents);
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334
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    // Correct syntax to be nice to the json parser
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c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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   303
    // eliminate comments
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   304
    $contents = preg_replace(array(
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   305
            // eliminate single line comments in '// ...' form
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            '#^\s*//(.+)$#m',
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   307
            // eliminate multi-line comments in '/* ... */' form, at start of string
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   308
            '#^\s*/\*(.+)\*/#Us',
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   309
            // eliminate multi-line comments in '/* ... */' form, at end of string
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   310
            '#/\*(.+)\*/\s*$#Us'
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   311
          ), '', $contents);
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   312
    
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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   313
    $contents = preg_replace('/([,\{\[])([\s]*?)([a-z0-9_]+)([\s]*?):/', '\\1\\2"\\3" :', $contents);
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   314
    
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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   315
    try
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   316
    {
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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   317
      $langdata = enano_json_decode($contents);
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   318
    }
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   319
    catch(Zend_Json_Exception $e)
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   320
    {
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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diff changeset
   321
      $db->_die('lang.php - Exception caught by JSON parser');
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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   322
      exit;
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
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diff changeset
   323
    }
205
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   324
    
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   325
    if ( !is_array($langdata) )
334
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
Dan
parents: 243
diff changeset
   326
    {
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
Dan
parents: 243
diff changeset
   327
      $db->_die('lang.php - invalid or non-well-formed language file');
c72b545f1304 More localization work. Resolved major issue with JSON parser not parsing files over ~50KB. Switched JSON parser to the one from the Zend Framework (BSD licensed). Forced to split enano.json into five different files.
Dan
parents: 243
diff changeset
   328
    }
205
c4542792db2b Localization low-level framework added
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parents:
diff changeset
   329
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   330
    if ( !isset($langdata['categories']) || !isset($langdata['strings']) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   331
      $db->_die('lang.php - language file does not contain the proper items');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   332
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   333
    $insert_list = array();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   334
    $delete_list = array();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   335
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   336
    foreach ( $langdata['categories'] as $category )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   337
    {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   338
      if ( isset($langdata['strings'][$category]) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   339
      {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   340
        foreach ( $langdata['strings'][$category] as $string_name => $string_value )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   341
        {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   342
          $string_name = $db->escape($string_name);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   343
          $string_value = $db->escape($string_value);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   344
          $category_name = $db->escape($category);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   345
          $insert_list[] = "({$this->lang_id}, '$category_name', '$string_name', '$string_value')";
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   346
          $delete_list[] = "( lang_id = {$this->lang_id} AND string_category = '$category_name' AND string_name = '$string_name' )";
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   347
        }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   348
      }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   349
    }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   350
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   351
    $delete_list = implode(" OR\n  ", $delete_list);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   352
    $sql = "DELETE FROM " . table_prefix . "language_strings WHERE $delete_list;";
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   353
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   354
    // Free some memory
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   355
    unset($delete_list);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   356
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   357
    // Run the query
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   358
    $q = $db->sql_query($sql);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   359
    if ( !$q )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   360
      $db->_die('lang.php - couldn\'t kill off them old strings');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   361
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   362
    $insert_list = implode(",\n  ", $insert_list);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   363
    $sql = "INSERT INTO " . table_prefix . "language_strings(lang_id, string_category, string_name, string_content) VALUES\n  $insert_list;";
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   364
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   365
    // Free some memory
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   366
    unset($insert_list);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   367
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   368
    // Run the query
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   369
    $q = $db->sql_query($sql);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   370
    if ( !$q )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   371
      $db->_die('lang.php - couldn\'t insert strings in import()');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   372
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   373
    // YAY! done!
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   374
    // This will regenerate the cache file if possible.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   375
    $this->regen_caches();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   376
  }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   377
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   378
  /**
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   379
   * Refetches the strings and writes out the cache file.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   380
   */
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   381
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   382
  function regen_caches()
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   383
  {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   384
    global $db, $session, $paths, $template, $plugins; // Common objects
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   385
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   386
    $lang_file = ENANO_ROOT . "/cache/lang_{$this->lang_id}.php";
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   387
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   388
    // Refresh the strings in RAM to the latest copies in the DB
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   389
    $this->fetch(false);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   390
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   391
    $handle = @fopen($lang_file, 'w');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   392
    if ( !$handle )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   393
      // Couldn't open the file. Silently fail and let the strings come from the database.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   394
      return false;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   395
      
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   396
    // The file's open, that means we should be good.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   397
    fwrite($handle, '<?php
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   398
// This file was generated automatically by Enano. You should not edit this file because any changes you make
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   399
// to it will not be visible in the ACP and all changes will be lost upon any changes to strings in the admin panel.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   400
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   401
$lang_cache = ');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   402
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   403
    $exported = $this->var_export_string($this->strings);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   404
    if ( empty($exported) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   405
      // Ehh, that's not good
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   406
      $db->_die('lang.php - var_export_string() failed');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   407
    
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   408
    fwrite($handle, $exported . '; ?>');
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   409
    
210
2b283402e4e4 Added language export to JSON page and localization for Javascript using $lang.get(). Localized AJAX login interface.
Dan
parents: 209
diff changeset
   410
    // Update timestamp in database
2b283402e4e4 Added language export to JSON page and localization for Javascript using $lang.get(). Localized AJAX login interface.
Dan
parents: 209
diff changeset
   411
    $q = $db->sql_query('UPDATE ' . table_prefix . 'language SET last_changed = ' . time() . ' WHERE lang_id = ' . $this->lang_id . ';');
2b283402e4e4 Added language export to JSON page and localization for Javascript using $lang.get(). Localized AJAX login interface.
Dan
parents: 209
diff changeset
   412
    if ( !$q )
2b283402e4e4 Added language export to JSON page and localization for Javascript using $lang.get(). Localized AJAX login interface.
Dan
parents: 209
diff changeset
   413
      $db->_die('lang.php - updating timestamp on language');
2b283402e4e4 Added language export to JSON page and localization for Javascript using $lang.get(). Localized AJAX login interface.
Dan
parents: 209
diff changeset
   414
    
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   415
    // Done =)
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   416
    fclose($handle);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   417
  }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   418
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   419
  /**
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   420
   * Calls var_export() on whatever, and returns the function's output.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   421
   * @param mixed Whatever you want var_exported. Usually an array.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   422
   * @return string
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   423
   */
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   424
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   425
  function var_export_string($val)
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   426
  {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   427
    ob_start();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   428
    var_export($val);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   429
    $contents = ob_get_contents();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   430
    ob_end_clean();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   431
    return $contents;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   432
  }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   433
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   434
  /**
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   435
   * Fetches a language string from the cache in RAM. If it isn't there, it will call fetch() again and then try. If it still can't find it, it will ask for the string
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   436
   * in the default language. If even then the string can't be found, this function will return what was passed to it.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   437
   *
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   438
   * This will also templatize strings. If a string contains variables in the format %foo%, you may specify the second parameter as an associative array in the format
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   439
   * of 'foo' => 'foo substitute'.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   440
   *
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   441
   * @param string ID of the string to fetch. This will always be in the format of category_stringid.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   442
   * @param array Optional. Associative array of substitutions.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   443
   * @return string
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   444
   */
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   445
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   446
  function get($string_id, $substitutions = false)
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   447
  {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   448
    // Extract the category and string ID
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   449
    $category = substr($string_id, 0, ( strpos($string_id, '_') ));
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   450
    $string_name = substr($string_id, ( strpos($string_id, '_') + 1 ));
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   451
    $found = false;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   452
    if ( isset($this->strings[$category]) && isset($this->strings[$category][$string_name]) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   453
    {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   454
      $found = true;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   455
      $string = $this->strings[$category][$string_name];
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   456
    }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   457
    if ( !$found )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   458
    {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   459
      // Ehh, the string wasn't found. Rerun fetch() and try again.
243
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
Dan
parents: 241
diff changeset
   460
      if ( defined('IN_ENANO_INSTALL') )
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
Dan
parents: 241
diff changeset
   461
      {
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
Dan
parents: 241
diff changeset
   462
        return $string_id;
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
Dan
parents: 241
diff changeset
   463
      }
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   464
      $this->fetch();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   465
      if ( isset($this->strings[$category]) && isset($this->strings[$category][$string_name]) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   466
      {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   467
        $found = true;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   468
        $string = $this->strings[$category][$string_name];
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   469
      }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   470
      if ( !$found )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   471
      {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   472
        // STILL not found. Check the default language.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   473
        $lang_default = ( $x = getConfig('default_language') ) ? intval($x) : $this->lang_id;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   474
        if ( $lang_default != $this->lang_id )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   475
        {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   476
          if ( !is_object($this->default) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   477
            $this->default = new Language($lang_default);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   478
          return $this->default->get($string_id, $substitutions);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   479
        }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   480
      }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   481
    }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   482
    if ( !$found )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   483
    {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   484
      // Alright, it's nowhere. Return the input, grumble grumble...
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   485
      return $string_id;
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   486
    }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   487
    // Found it!
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   488
    // Perform substitutions.
209
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   489
    // if ( is_array($substitutions) )
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   490
    //   die('<pre>' . print_r($substitutions, true) . '</pre>');
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   491
    if ( !is_array($substitutions) )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   492
      $substitutions = array();
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   493
    return $this->substitute($string, $substitutions);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   494
  }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   495
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   496
  /**
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   497
   * Processes substitutions.
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   498
   * @param string
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   499
   * @param array
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   500
   * @return string
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   501
   */
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   502
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   503
  function substitute($string, $subs)
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   504
  {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   505
    preg_match_all('/%this\.([a-z0-9_]+)%/', $string, $matches);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   506
    if ( count($matches[0]) > 0 )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   507
    {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   508
      foreach ( $matches[1] as $i => $string_id )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   509
      {
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   510
        $result = $this->get($string_id);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   511
        $string = str_replace($matches[0][$i], $result, $string);
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   512
      }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   513
    }
209
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   514
    preg_match_all('/%config\.([a-z0-9_]+)%/', $string, $matches);
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   515
    if ( count($matches[0]) > 0 )
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   516
    {
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   517
      foreach ( $matches[1] as $i => $string_id )
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   518
      {
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   519
        $result = getConfig($string_id);
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   520
        $string = str_replace($matches[0][$i], $result, $string);
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   521
      }
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   522
    }
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   523
    foreach ( $subs as $key => $value )
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   524
    {
209
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   525
      $subs[$key] = strval($value);
8a00247d1dee Login page mostly localized
Dan
parents: 205
diff changeset
   526
      $string = str_replace("%{$key}%", "{$subs[$key]}", $string);
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   527
    }
243
a7d0f2711df1 Installer localization started. Welcome, License, and SysReqs pages are fully localized.
Dan
parents: 241
diff changeset
   528
    return "{$string}*";
205
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   529
  }
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   530
  
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   531
} // class Language
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   532
c4542792db2b Localization low-level framework added
Dan
parents:
diff changeset
   533
?>