* sync matches and replacement arrays again in magicHtml()

[squirrelmail.git] / functions / i18n.php

<?php
/**
 * SquirrelMail internationalization functions
 *
 * Copyright (c) 1999-2005 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This file contains variuos functions that are needed to do
 * internationalization of SquirrelMail.
 *
 * Internally the output character set is used. Other characters are
 * encoded using Unicode entities according to HTML 4.0.
 *
 * @version $Id$
 * @package squirrelmail
 * @subpackage i18n
 */

/** @ignore */
if (! defined('SM_PATH')) define('SM_PATH','../');

/** Everything uses global.php... */
require_once(SM_PATH . 'functions/global.php');

/**
 * Gettext bindtextdomain wrapper.
 *
 * Wrapper solves differences between php versions in order to provide
 * ngettext support. Should be used if translation uses ngettext
 * functions.
 * @since 1.5.1
 * @param string $domain gettext domain name
 * @param string $dir directory that contains all translations
 * @return string path to translation directory
 */
function sq_bindtextdomain($domain,$dir) {
    global $l10n, $gettext_flags, $sm_notAlias;

    if ($gettext_flags==7) {
        // gettext extension without ngettext
        if (substr($dir, -1) != '/') $dir .= '/';
        $mofile=$dir . $sm_notAlias . '/LC_MESSAGES/' . $domain . '.mo';
        $input = new FileReader($mofile);
        $l10n[$domain] = new gettext_reader($input);
    }

    $dir=bindtextdomain($domain,$dir);

    return $dir;
}

/**
 * Gettext textdomain wrapper.
 * Makes sure that gettext_domain global is modified.
 * @since 1.5.1
 * @param string $name gettext domain name
 * @return string gettext domain name
 */
function sq_textdomain($domain) {
    global $gettext_domain;
    $gettext_domain=textdomain($domain);
    return $gettext_domain;
}

/**
 * php setlocale function wrapper
 *
 * From php 4.3.0 it is possible to use arrays in order to set locale.
 * php gettext extension works only when locale is set. This wrapper
 * function allows to use more than one locale name.
 *
 * @param int $category locale category name. Use php named constants
 *     (LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC, LC_TIME)
 * @param mixed $locale option contains array with possible locales or string with one locale
 * @return string name of set locale or false, if all locales fail.
 * @since 1.5.1 and 1.4.5
 * @see http://www.php.net/setlocale
 */
function sq_setlocale($category,$locale) {
    // string with only one locale
    if (is_string($locale))
        return setlocale($category,$locale);

    if (! check_php_version(4,3)) {
        $ret=false;
        $index=0;
        while ( ! $ret && $index<count($locale)) {
            $ret=setlocale($category,$locale[$index]);
            $index++;
        }
    } else {
        // php 4.3.0 or better, use entire array
        $ret=setlocale($category,$locale);
    }
    return $ret;
}

/**
 * Converts string from given charset to charset, that can be displayed by user translation.
 *
 * Function by default returns html encoded strings, if translation uses different encoding.
 * If Japanese translation is used - function returns string converted to euc-jp
 * If iconv or recode functions are enabled and translation uses utf-8 - function returns utf-8 encoded string.
 * If $charset is not supported - function returns unconverted string.
 *
 * sanitizing of html tags is also done by this function.
 *
 * @param string $charset
 * @param string $string Text to be decoded
 * @param boolean $force_decode converts string to html without $charset!=$default_charset check.
 * Argument is available since 1.5.1 and 1.4.5.
 * @return string decoded string
 */
function charset_decode ($charset, $string, $force_decode=false) {
    global $languages, $squirrelmail_language, $default_charset;
    global $use_php_recode, $use_php_iconv, $aggressive_decoding;

    if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
        function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
        $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode', $string);
    }

    $charset = strtolower($charset);

    set_my_charset();

    // Variables that allow to use functions without function_exist() calls
    if (! isset($use_php_recode) || $use_php_recode=="" ) {
        $use_php_recode=false; }
    if (! isset($use_php_iconv) || $use_php_iconv=="" ) {
        $use_php_iconv=false; }

    // Don't do conversion if charset is the same.
    if ( ! $force_decode && $charset == strtolower($default_charset) )
        return htmlspecialchars($string);

    // catch iso-8859-8-i thing
    if ( $charset == "iso-8859-8-i" )
        $charset = "iso-8859-8";

    /*
     * Recode converts html special characters automatically if you use
     * 'charset..html' decoding. There is no documented way to put -d option
     * into php recode function call.
     */
    if ( $use_php_recode ) {
        if ( $default_charset == "utf-8" ) {
            // other charsets can be converted to utf-8 without loss.
            // and output string is smaller
            $string = recode_string($charset . "..utf-8",$string);
            return htmlspecialchars($string);
        } else {
            $string = recode_string($charset . "..html",$string);
            // recode does not convert single quote, htmlspecialchars does.
            $string = str_replace("'", '&#039;', $string);
            return $string;
        }
    }

    // iconv functions does not have html target and can be used only with utf-8
    if ( $use_php_iconv && $default_charset=='utf-8') {
        $string = iconv($charset,$default_charset,$string);
        return htmlspecialchars($string);
    }

    // If we don't use recode and iconv, we'll do it old way.

    /* All HTML special characters are 7 bit and can be replaced first */

    $string = htmlspecialchars ($string);

    /* controls cpu and memory intensive decoding cycles */
    if (! isset($aggressive_decoding) || $aggressive_decoding=="" ) {
        $aggressive_decoding=false; }

    $decode=fixcharset($charset);
    $decodefile=SM_PATH . 'functions/decode/' . $decode . '.php';
    if (file_exists($decodefile)) {
        include_once($decodefile);
        $ret = call_user_func('charset_decode_'.$decode, $string);
    } else {
        $ret = $string;
    }
    return( $ret );
}

/**
 * Converts html string to given charset
 * @since 1.5.1 and 1.4.4
 * @param string $string
 * @param string $charset
 * @param boolean $htmlencode keep htmlspecialchars encoding
 * @param string
 */
function charset_encode($string,$charset,$htmlencode=true) {
    global $default_charset;

    $encode=fixcharset($charset);
    $encodefile=SM_PATH . 'functions/encode/' . $encode . '.php';
    if (file_exists($encodefile)) {
        include_once($encodefile);
        $ret = call_user_func('charset_encode_'.$encode, $string);
    } elseif(file_exists(SM_PATH . 'functions/encode/us_ascii.php')) {
        // function replaces all 8bit html entities with question marks.
        // it is used when other encoding functions are unavailable
        include_once(SM_PATH . 'functions/encode/us_ascii.php');
        $ret = charset_encode_us_ascii($string);
    } else {
        /**
         * fix for yahoo users that remove all us-ascii related things
         */
        $ret = $string;
    }

    /**
     * Undo html special chars, some places (like compose form) have
     * own sanitizing functions and don't need html symbols.
     * Undo chars only after encoding in order to prevent conversion of
     * html entities in plain text emails.
     */
    if (! $htmlencode ) {
        $ret = str_replace(array('&amp;','&gt;','&lt;','&quot;'),array('&','>','<','"'),$ret);
    }
    return( $ret );
}

/**
 * Combined decoding and encoding functions
 *
 * If conversion is done to charset different that utf-8, unsupported symbols
 * will be replaced with question marks.
 * @since 1.5.1 and 1.4.4
 * @param string $in_charset initial charset
 * @param string $string string that has to be converted
 * @param string $out_charset final charset
 * @param boolean $htmlencode keep htmlspecialchars encoding
 * @return string converted string
 */
function charset_convert($in_charset,$string,$out_charset,$htmlencode=true) {
    $string=charset_decode($in_charset,$string,true);
    $string=charset_encode($string,$out_charset,$htmlencode);
    return $string;
}

/**
 * Makes charset name suitable for decoding cycles
 *
 * @since 1.5.0 and 1.4.4
 * @param string $charset Name of charset
 * @return string $charset Adjusted name of charset
 */
function fixcharset($charset) {
    /* remove minus and characters that might be used in paths from charset
     * name in order to be able to use it in function names and include calls.
     */
    $charset=preg_replace("/[-:.\/\\\]/",'_',$charset);

    // windows-125x and cp125x charsets
    $charset=str_replace('windows_','cp',$charset);

    // ibm > cp
    $charset=str_replace('ibm','cp',$charset);

    // iso-8859-8-i -> iso-8859-8
    // use same cycle until I'll find differences
    $charset=str_replace('iso_8859_8_i','iso_8859_8',$charset);

    return $charset;
}

/**
 * Set up the language to be output
 * if $do_search is true, then scan the browser information
 * for a possible language that we know
 *
 * Function sets system locale environment (LC_ALL, LANG, LANGUAGE),
 * gettext translation bindings and html header information.
 *
 * Function returns error codes, if there is some fatal error.
 *  0 = no error,
 *  1 = mbstring support is not present,
 *  2 = mbstring support is not present, user's translation reverted to en_US.
 *
 * @param string $sm_language translation used by user's interface
 * @param bool $do_search use browser's preferred language detection functions. Defaults to false.
 * @param bool $default set $sm_language to $squirrelmail_default_language if language detection fails or language is not set. Defaults to false.
 * @return int function execution error codes.
 */
function set_up_language($sm_language, $do_search = false, $default = false) {

    static $SetupAlready = 0;
    global $use_gettext, $languages,
           $squirrelmail_language, $squirrelmail_default_language, $default_charset,
           $sm_notAlias, $username, $data_dir;

    if ($SetupAlready) {
        return;
    }

    $SetupAlready = TRUE;
    sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE',  $accept_lang, SQ_SERVER);

    /**
     * If function is asked to detect preferred language
     *  OR squirrelmail default language is set to empty string
     *    AND
     * squirrelmail language ($sm_language) is empty string
     * (not set in user's prefs and no cookie with language info)
     *    AND
     * browser provides list of preferred languages
     *  THEN
     * get preferred language from HTTP_ACCEPT_LANGUAGE header
     */
    if (($do_search || empty($squirrelmail_default_language)) &&
        ! $sm_language &&
        isset($accept_lang)) {
        // TODO: use more than one language, if first language is not available
        // FIXME: function assumes that string contains two or more characters.
        // FIXME: some languages use 5 chars
        $sm_language = substr($accept_lang, 0, 2);
    }

    /**
     * If language preference is not set OR script asks to use default language
     *  AND
     * default squirrelmail language is not set to empty string
     *  THEN
     * use default squirrelmail language value from configuration.
     */
    if ((!$sm_language||$default) &&
        ! empty($squirrelmail_default_language)) {
        $squirrelmail_language = $squirrelmail_default_language;
        $sm_language = $squirrelmail_default_language;
    }

    /** provide failsafe language when detection fails */
    if (! $sm_language) $sm_language='en_US';

    $sm_notAlias = $sm_language;

    // Catching removed translation
    // System reverts to English translation if user prefs contain translation
    // that is not available in $languages array
    if (!isset($languages[$sm_notAlias])) {
        $sm_notAlias="en_US";
    }

    while (isset($languages[$sm_notAlias]['ALIAS'])) {
        $sm_notAlias = $languages[$sm_notAlias]['ALIAS'];
    }

    if ( isset($sm_language) &&
         $use_gettext &&
         $sm_language != '' &&
         isset($languages[$sm_notAlias]['CHARSET']) ) {
        sq_bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' );
        sq_textdomain( 'squirrelmail' );

        // set codeset in order to avoid gettext charset conversions
        if (function_exists('bind_textdomain_codeset')) {
            // Japanese translation uses different internal charset
            if ($sm_notAlias == 'ja_JP') {
                bind_textdomain_codeset ('squirrelmail', 'EUC-JP');
            } else {
                bind_textdomain_codeset ('squirrelmail', $languages[$sm_notAlias]['CHARSET'] );
            }
        }

        // Use LOCALE key, if it is set.
        if (isset($languages[$sm_notAlias]['LOCALE'])){
            $longlocale=$languages[$sm_notAlias]['LOCALE'];
        } else {
            $longlocale=$sm_notAlias;
        }

        // try setting locale
        $retlocale=sq_setlocale(LC_ALL, $longlocale);

        // check if locale is set and assign that locale to $longlocale
        // in order to use it in putenv calls.
        if (! is_bool($retlocale)) {
            $longlocale=$retlocale;
        } elseif (is_array($longlocale)) {
            // setting of all locales failed.
            // we need string instead of array used in LOCALE key.
            $longlocale=$sm_notAlias;
        }

        if ( !((bool)ini_get('safe_mode')) &&
             getenv( 'LC_ALL' ) != $longlocale ) {
            putenv( "LC_ALL=$longlocale" );
            putenv( "LANG=$longlocale" );
            putenv( "LANGUAGE=$longlocale" );
            putenv( "LC_NUMERIC=C" );
            if ($sm_notAlias=='tr_TR') putenv( "LC_CTYPE=C" );
        }
        // Workaround for plugins that use numbers with floating point
        // It might be removed if plugins use correct decimal delimiters
        // according to locale settings.
        setlocale(LC_NUMERIC, 'C');
        // Workaround for specific Turkish strtolower/strtoupper rules.
        // Many functions expect English conversion rules.
        if ($sm_notAlias=='tr_TR') setlocale(LC_CTYPE,'C');

        // Set text direction/alignment variables
        // These don't appear to be used... are they safe to remove?
        if (isset($languages[$sm_notAlias]['DIR']) &&
            $languages[$sm_notAlias]['DIR'] == 'rtl') {
            /**
             * Text direction
             * @global string $text_direction
             */
            $text_direction='rtl';
            /**
             * Left alignment
             * @global string $left_align
             */
            $left_align='right';
            /**
             * Right alignment
             * @global string $right_align
             */
            $right_align='left';
        } else {
            $text_direction='ltr';
            $left_align='left';
            $right_align='right';
        }

        $squirrelmail_language = $sm_notAlias;
        if ($squirrelmail_language == 'ja_JP') {
            header ('Content-Type: text/html; charset=EUC-JP');
            if (!function_exists('mb_internal_encoding')) {
                // Error messages can't be displayed here
                $error = 1;
                // Revert to English if possible.
                if (function_exists('setPref')  && $username!='' && $data_dir!="") {
                    setPref($data_dir, $username, 'language', "en_US");
                    $error = 2;
                }
                // stop further execution in order not to get php errors on mb_internal_encoding().
                return $error;
            }
            if (function_exists('mb_language')) {
                mb_language('Japanese');
            }
            mb_internal_encoding('EUC-JP');
            mb_http_output('pass');
        } elseif ($squirrelmail_language == 'en_US') {
            header( 'Content-Type: text/html; charset=' . $default_charset );
        } else {
            header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
        }
        /**
         * mbstring.func_overload fix (#929644).
         *
         * php mbstring extension can replace standard string functions with their multibyte
         * equivalents. See http://www.php.net/ref.mbstring#mbstring.overload. This feature 
         * was added in php v.4.2.0
         *
         * Some SquirrelMail functions work with 8bit strings in bytes. If interface is forced
         * to use mbstring functions and mbstring internal encoding is set to multibyte charset,
         * interface can't trust regular string functions. Due to mbstring overloading design
         * limits php scripts can't control this setting.
         *
         * This hack should fix some issues related to 8bit strings in passwords. Correct fix is
         * to disable mbstring overloading. Japanese translation uses different internal encoding.
         */
        if ($squirrelmail_language != 'ja_JP' &&
            function_exists('mb_internal_encoding') &&
            check_php_version(4,2,0) &&
            (int)ini_get('mbstring.func_overload')!=0) {
            mb_internal_encoding('pass');
        }
    }
    return 0;
}

/**
 * Sets default_charset variable according to the one that is used by user's translations.
 *
 * Function changes global $default_charset variable in order to be sure, that it
 * contains charset used by user's translation. Sanity of $squirrelmail_language
 * and $default_charset combination is also tested.
 *
 * There can be a $default_charset setting in the
 * config.php file, but the user may have a different language
 * selected for a user interface. This function checks the
 * language selected by the user and tags the outgoing messages
 * with the appropriate charset corresponding to the language
 * selection. This is "more right" (tm), than just stamping the
 * message blindly with the system-wide $default_charset.
 */
function set_my_charset(){
    global $data_dir, $username, $default_charset, $languages, $squirrelmail_language;

    $my_language = getPref($data_dir, $username, 'language');
    if (!$my_language) {
        $my_language = $squirrelmail_language ;
    }
    // Catch removed translation
    if (!isset($languages[$my_language])) {
        $my_language="en_US";
    }
    while (isset($languages[$my_language]['ALIAS'])) {
        $my_language = $languages[$my_language]['ALIAS'];
    }
    $my_charset = $languages[$my_language]['CHARSET'];
    if ($my_language!='en_US') {
        $default_charset = $my_charset;
    }
}

/**
 * Replaces non-braking spaces inserted by some browsers with regular space
 *
 * This function can be used to replace non-braking space symbols
 * that are inserted in forms by some browsers instead of normal
 * space symbol.
 *
 * @param string $string Text that needs to be cleaned
 * @param string $charset Charset used in text
 * @return string Cleaned text
 */
function cleanup_nbsp($string,$charset) {

  // reduce number of case statements
  if (stristr('iso-8859-',substr($charset,0,9))){
    $output_charset="iso-8859-x";
  }
  if (stristr('windows-125',substr($charset,0,11))){
    $output_charset="cp125x";
  }
  if (stristr('koi8',substr($charset,0,4))){
    $output_charset="koi8-x";
  }
  if (! isset($output_charset)){
    $output_charset=strtolower($charset);
  }

// where is non-braking space symbol
switch($output_charset):
 case "iso-8859-x":
 case "cp125x":
 case "iso-2022-jp":
  $nbsp="\xA0";
  break;
 case "koi8-x":
   $nbsp="\x9A";
   break;
 case "utf-8":
   $nbsp="\xC2\xA0";
   break;
 default:
   // don't change string if charset is unmatched
   return $string;
endswitch;

// return space instead of non-braking space.
 return str_replace($nbsp,' ',$string);
}

/**
 * Function informs if it is safe to convert given charset to the one that is used by user.
 *
 * It is safe to use conversion only if user uses utf-8 encoding and when
 * converted charset is similar to the one that is used by user.
 *
 * @param string $input_charset Charset of text that needs to be converted
 * @return bool is it possible to convert to user's charset
 */
function is_conversion_safe($input_charset) {
  global $languages, $sm_notAlias, $default_charset, $lossy_encoding;

    if (isset($lossy_encoding) && $lossy_encoding )
        return true;

 // convert to lower case
 $input_charset = strtolower($input_charset);

 // Is user's locale Unicode based ?
 if ( $default_charset == "utf-8" ) {
   return true;
 }

 // Charsets that are similar
switch ($default_charset):
case "windows-1251":
      if ( $input_charset == "iso-8859-5" ||
           $input_charset == "koi8-r" ||
           $input_charset == "koi8-u" ) {
        return true;
     } else {
        return false;
     }
case "windows-1257":
  if ( $input_charset == "iso-8859-13" ||
       $input_charset == "iso-8859-4" ) {
    return true;
  } else {
    return false;
  }
case "iso-8859-4":
  if ( $input_charset == "iso-8859-13" ||
       $input_charset == "windows-1257" ) {
     return true;
  } else {
     return false;
  }
case "iso-8859-5":
  if ( $input_charset == "windows-1251" ||
       $input_charset == "koi8-r" ||
       $input_charset == "koi8-u" ) {
     return true;
  } else {
     return false;
  }
case "iso-8859-13":
  if ( $input_charset == "iso-8859-4" ||
       $input_charset == "windows-1257" ) {
     return true;
  } else {
     return false;
  }
case "koi8-r":
  if ( $input_charset == "windows-1251" ||
       $input_charset == "iso-8859-5" ||
       $input_charset == "koi8-u" ) {
     return true;
  } else {
     return false;
  }
case "koi8-u":
  if ( $input_charset == "windows-1251" ||
       $input_charset == "iso-8859-5" ||
       $input_charset == "koi8-r" ) {
     return true;
  } else {
     return false;
  }
default:
   return false;
endswitch;
}


/* ------------------------------ main --------------------------- */

global $squirrelmail_language, $languages, $use_gettext;

if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) {
    $squirrelmail_language = '';
}

/**
 * Array specifies the available translations.
 *
 * Structure of array:
 * $languages['language']['variable'] = 'value'
 *
 * Possible 'variable' names:
 *  NAME      - Translation name in English
 *  CHARSET   - Encoding used by translation
 *  ALIAS     - used when 'language' is only short name and 'value' should provide long language name
 *  ALTNAME   - Native translation name. Any 8bit symbols must be html encoded.
 *  LOCALE    - Full locale name (in xx_XX.charset format). It can use array with more than one locale name since 1.4.5 and 1.5.1
 *  DIR       - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr'
 *  XTRA_CODE - translation uses special functions. See doc/i18n.txt
 *
 * Each 'language' definition requires NAME+CHARSET or ALIAS variables.
 *
 * @name $languages
 * @global array $languages
 */
$languages['en_US']['NAME']    = 'English';
$languages['en_US']['CHARSET'] = 'iso-8859-1';
$languages['en_US']['LOCALE']  = 'en_US.ISO8859-1';
$languages['en']['ALIAS'] = 'en_US';

/**
 * Automatic translation loading from setup.php files.
 * Solution for bug. 1240889.
 * setup.php file can contain $languages array entries and XTRA_CODE functions.
 */
if (is_dir(SM_PATH . 'locale') &&
    is_readable(SM_PATH . 'locale')) {
    $localedir = dir(SM_PATH . 'locale');
    while($lang_dir=$localedir->read()) {
        // remove trailing slash, if present
        if (substr($lang_dir,-1)=='/') {
            $lang_dir = substr($lang_dir,0,-1);
        }
        if ($lang_dir != '..' && $lang_dir != '.' && $lang_dir != 'CVS' &&
            is_dir(SM_PATH.'locale/'.$lang_dir) && 
            file_exists(SM_PATH.'locale/'.$lang_dir.'/setup.php')) {
            include_once(SM_PATH.'locale/'.$lang_dir.'/setup.php');
        }
    }
    $localedir->close();
}

/* Detect whether gettext is installed. */
$gettext_flags = 0;
if (function_exists('_')) {
    $gettext_flags += 1;
}
if (function_exists('bindtextdomain')) {
    $gettext_flags += 2;
}
if (function_exists('textdomain')) {
    $gettext_flags += 4;
}
if (function_exists('ngettext')) {
    $gettext_flags += 8;
}

/* If gettext is fully loaded, cool */
if ($gettext_flags == 15) {
    $use_gettext = true;
}

/* If ngettext support is missing, load it */
elseif ($gettext_flags == 7) {
    $use_gettext = true;
    // load internal ngettext functions
    include_once(SM_PATH . 'class/l10n.class.php');
    include_once(SM_PATH . 'functions/ngettext.php');
}

/* If we can fake gettext, try that */
elseif ($gettext_flags == 0) {
    $use_gettext = true;
    include_once(SM_PATH . 'functions/gettext.php');
} else {
    /* Uh-ho.  A weird install */
    if (! $gettext_flags & 1) {
      /**
       * Function is used as replacement in broken installs
       * @ignore
       */
        function _($str) {
            return $str;
        }
    }
    if (! $gettext_flags & 2) {
      /**
       * Function is used as replacement in broken installs
       * @ignore
       */
        function bindtextdomain() {
            return;
        }
    }
    if (! $gettext_flags & 4) {
      /**
       * Function is used as replacemet in broken installs
       * @ignore
       */
        function textdomain() {
            return;
        }
    }
    if (! $gettext_flags & 8) {
        /**
         * Function is used as replacemet in broken installs
         * @ignore
         */
        function ngettext($str,$str2,$number) {
            if ($number>1) {
                return $str2;
            } else {
                return $str;
            }
        }
    }
    if (! function_exists('dgettext')) {
        /**
         * Replacement for broken setups.
         * @ignore
         */
        function dgettext($domain,$str) {
            return $str;
        }
    }
    if (! function_exists('dngettext')) {
        /**
         * Replacement for broken setups
         * @ignore
         */
        function dngettext($domain,$str1,$strn,$number) {
            return ($number==1 ? $str1 : $strn);
        }
    }
}
?>