X-Git-Url: https://vcs.fsf.org/?p=squirrelmail.git;a=blobdiff_plain;f=functions%2Fi18n.php;h=3d99ed0690253bba2e694310d8c7161a30a71720;hp=6ee96e2838049db2c0a4be59abbdbcecbe9bebc7;hb=d6c32258c05219670ab3b4ae2d460d844ea9a247;hpb=6e1fbb5617538d3cf6c0aa260e60d01928efbb4f diff --git a/functions/i18n.php b/functions/i18n.php index 6ee96e28..3d99ed06 100644 --- a/functions/i18n.php +++ b/functions/i18n.php @@ -1,604 +1,229 @@ \ No newline at end of file +} + +/* + * This is the same as ISO-646-NO and is used by some + * Microsoft programs when sending Norwegian characters + */ +function charset_decode_ns_4551_1 ($string) { + /* + * These characters are: + * Latin capital letter AE + * Latin capital letter O with stroke + * Latin capital letter A with ring above + * and the same as small letters + */ + return strtr ($string, "[\\]{|}", "ÆØÅæøå"); +} + + +/* + * Set up the language to be output + * if $do_search is true, then scan the browser information + * for a possible language that we know + */ +function set_up_language($sm_language, $do_search = false, $default = false) { + + static $SetupAlready = 0; + global $use_gettext, $languages, + $squirrelmail_language, $squirrelmail_default_language, + $sm_notAlias; + + if ($SetupAlready) { + return; + } + + $SetupAlready = TRUE; + sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE', $accept_lang, SQ_SERVER); + + if ($do_search && ! $sm_language && isset($accept_lang)) { + $sm_language = substr($accept_lang, 0, 2); + } + + if ((!$sm_language||$default) && isset($squirrelmail_default_language)) { + $squirrelmail_language = $squirrelmail_default_language; + $sm_language = $squirrelmail_default_language; + } + $sm_notAlias = $sm_language; + + // Catching removed translation + // System reverts to English translation if user prefs contain translation + // that is not available in $languages array (admin removed directory + // with that translation) + if (!isset($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']) ) { + bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' ); + textdomain( 'squirrelmail' ); + if (function_exists('bind_textdomain_codeset')) { + bind_textdomain_codeset ("squirrelmail", $languages[$sm_notAlias]['CHARSET'] ); + } + if (isset($languages[$sm_notAlias]['LOCALE'])){ + $longlocale=$languages[$sm_notAlias]['LOCALE']; + } else { + $longlocale=$sm_notAlias; + } + if ( !ini_get('safe_mode') && + getenv( 'LC_ALL' ) != $longlocale ) { + putenv( "LC_ALL=$longlocale" ); + putenv( "LANG=$longlocale" ); + putenv( "LANGUAGE=$longlocale" ); + } + setlocale(LC_ALL, $longlocale); + $squirrelmail_language = $sm_notAlias; + if ($squirrelmail_language == 'ja_JP' && function_exists('mb_detect_encoding') ) { + header ('Content-Type: text/html; charset=EUC-JP'); + if (!function_exists('mb_internal_encoding')) { + echo _("You need to have php4 installed with the multibyte string function enabled (using configure option --enable-mbstring)."); + } + if (function_exists('mb_language')) { + mb_language('Japanese'); + } + mb_internal_encoding('EUC-JP'); + mb_http_output('pass'); + } else { + header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] ); + } +} +} + +function set_my_charset(){ + + /* + * 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. + */ + global $data_dir, $username, $default_charset, $languages, $squirrelmail_default_language; + + $my_language = getPref($data_dir, $username, 'language'); + if (!$my_language) { + $my_language = $squirrelmail_default_language ; + } + // Catch removed translation + if (!isset($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_charset) { + $default_charset = $my_charset; + } +} + +/* ------------------------------ main --------------------------- */ + +global $squirrelmail_language, $languages, $use_gettext; + +if (! isset($squirrelmail_language)) { + $squirrelmail_language = ''; +} + +/* This array specifies the available languages. */ +$languages['bg_BG']['NAME'] = 'Bulgarian'; +$languages['bg_BG']['ALTNAME'] = 'Български'; +$languages['bg_BG']['CHARSET'] = 'windows-1251'; +$languages['bg']['ALIAS'] = 'bg_BG'; + +$languages['ca_ES']['NAME'] = 'Catalan'; +$languages['ca_ES']['CHARSET'] = 'iso-8859-1'; +$languages['ca']['ALIAS'] = 'ca_ES'; + +$languages['cs_CZ']['NAME'] = 'Czech'; +$languages['cs_CZ']['ALTNAME'] = 'Čeština'; +$languages['cs_CZ']['CHARSET'] = 'iso-8859-2'; +$languages['cs']['ALIAS'] = 'cs_CZ'; + +$languages['cy_GB']['NAME'] = 'Welsh'; +$languages['cy_GB']['ALTNAME'] = 'Cymraeg'; +$languages['cy_GB']['CHARSET'] = 'iso-8859-1'; +$languages['cy']['ALIAS'] = 'cy_GB'; + +// Danish locale is da_DK. +$languages['da_DK']['NAME'] = 'Danish'; +$languages['da_DK']['ALTNAME'] = 'Dansk'; +$languages['da_DK']['CHARSET'] = 'iso-8859-1'; +$languages['da']['ALIAS'] = 'da_DK'; + +$languages['de_DE']['NAME'] = 'German'; +$languages['de_DE']['ALTNAME'] = 'Deutsch'; +$languages['de_DE']['CHARSET'] = 'iso-8859-1'; +$languages['de']['ALIAS'] = 'de_DE'; + +$languages['el_GR']['NAME'] = 'Greek'; +$languages['el_GR']['ALTNAME'] = 'Ελληνικά'; +$languages['el_GR']['CHARSET'] = 'iso-8859-7'; +$languages['el']['ALIAS'] = 'el_GR'; + +// There is no en_EN! There is en_US, en_BR, en_AU, and so forth, +// but who cares about !US, right? Right? :) +$languages['en_US']['NAME'] = 'English'; +$languages['en_US']['CHARSET'] = 'iso-8859-1'; +$languages['en']['ALIAS'] = 'en_US'; + +$languages['es_ES']['NAME'] = 'Spanish'; +$languages['es_ES']['ALTNAME'] = 'Español'; +$languages['es_ES']['CHARSET'] = 'iso-8859-1'; +$languages['es']['ALIAS'] = 'es_ES'; + +$languages['et_EE']['NAME'] = 'Estonian'; +$languages['et_EE']['CHARSET'] = 'iso-8859-15'; +$languages['et']['ALIAS'] = 'et_EE'; + +$languages['fo_FO']['NAME'] = 'Faroese'; +$languages['fo_FO']['CHARSET'] = 'iso-8859-1'; +$languages['fo']['ALIAS'] = 'fo_FO'; + +$languages['fi_FI']['NAME'] = 'Finnish'; +$languages['fi_FI']['ALTNAME'] = 'Suomi'; +$languages['fi_FI']['CHARSET'] = 'iso-8859-1'; +$languages['fi']['ALIAS'] = 'fi_FI'; + +$languages['fr_FR']['NAME'] = 'French'; +$languages['fr_FR']['ALTNAME'] = 'Français'; +$languages['fr_FR']['CHARSET'] = 'iso-8859-1'; +$languages['fr']['ALIAS'] = 'fr_FR'; + +$languages['hr_HR']['NAME'] = 'Croatian'; +$languages['hr_HR']['CHARSET'] = 'iso-8859-2'; +$languages['hr']['ALIAS'] = 'hr_HR'; + +$languages['hu_HU']['NAME'] = 'Hungarian'; +$languages['hu_HU']['ALTNAME'] = 'Magyar'; +$languages['hu_HU']['CHARSET'] = 'iso-8859-2'; +$languages['hu']['ALIAS'] = 'hu_HU'; + +$languages['id_ID']['NAME'] = 'Indonesian'; +$languages['id_ID']['ALTNAME'] = 'Bahasa Indonesia'; +$languages['id_ID']['CHARSET'] = 'iso-8859-1'; +$languages['id']['ALIAS'] = 'id_ID'; + +$languages['is_IS']['NAME'] = 'Icelandic'; +$languages['is_IS']['ALTNAME'] = 'Íslenska'; +$languages['is_IS']['CHARSET'] = 'iso-8859-1'; +$languages['is']['ALIAS'] = 'is_IS'; + +$languages['it_IT']['NAME'] = 'Italian'; +$languages['it_IT']['CHARSET'] = 'iso-8859-1'; +$languages['it']['ALIAS'] = 'it_IT'; + +$languages['ja_JP']['NAME'] = 'Japanese'; +$languages['ja_JP']['ALTNAME'] = '日本語'; +$languages['ja_JP']['CHARSET'] = 'iso-2022-jp'; +$languages['ja_JP']['XTRA_CODE'] = 'japanese_charset_xtra'; +$languages['ja']['ALIAS'] = 'ja_JP'; + +$languages['ko_KR']['NAME'] = 'Korean'; +$languages['ko_KR']['CHARSET'] = 'euc-KR'; +$languages['ko_KR']['XTRA_CODE'] = 'korean_charset_xtra'; +$languages['ko']['ALIAS'] = 'ko_KR'; + +$languages['lt_LT']['NAME'] = 'Lithuanian'; +$languages['lt_LT']['ALTNAME'] = 'Lietuvių'; +$languages['lt_LT']['CHARSET'] = 'utf-8'; +$languages['lt_LT']['LOCALE'] = 'lt_LT.UTF-8'; +$languages['lt']['ALIAS'] = 'lt_LT'; + +$languages['nl_NL']['NAME'] = 'Dutch'; +$languages['nl_NL']['ALTNAME'] = 'Nederlands'; +$languages['nl_NL']['CHARSET'] = 'iso-8859-1'; +$languages['nl']['ALIAS'] = 'nl_NL'; + +$languages['ms_MY']['NAME'] = 'Malay'; +$languages['ms_MY']['ALTNAME'] = 'Bahasa Melayu'; +$languages['ms_MY']['CHARSET'] = 'iso-8859-1'; +$languages['my']['ALIAS'] = 'ms_MY'; + +$languages['no_NO']['NAME'] = 'Norwegian (Bokmål)'; +$languages['no_NO']['ALTNAME'] = 'Norsk (Bokmål)'; +$languages['no_NO']['CHARSET'] = 'iso-8859-1'; +$languages['no']['ALIAS'] = 'no_NO'; + +$languages['nn_NO']['NAME'] = 'Norwegian (Nynorsk)'; +$languages['nn_NO']['ALTNAME'] = 'Norsk (Nynorsk)'; +$languages['nn_NO']['CHARSET'] = 'iso-8859-1'; + +$languages['pl_PL']['NAME'] = 'Polish'; +$languages['pl_PL']['ALTNAME'] = 'Polski'; +$languages['pl_PL']['CHARSET'] = 'iso-8859-2'; +$languages['pl']['ALIAS'] = 'pl_PL'; + +$languages['pt_PT']['NAME'] = 'Portuguese (Portugal)'; +$languages['pt_PT']['CHARSET'] = 'iso-8859-1'; +$languages['pt']['ALIAS'] = 'pt_PT'; + +$languages['pt_BR']['NAME'] = 'Portuguese (Brazil)'; +$languages['pt_BR']['ALTNAME'] = 'Português do Brasil'; +$languages['pt_BR']['CHARSET'] = 'iso-8859-1'; + +$languages['ro_RO']['NAME'] = 'Romanian'; +$languages['ro_RO']['ALTNAME'] = 'Română'; +$languages['ro_RO']['CHARSET'] = 'iso-8859-2'; +$languages['ro']['ALIAS'] = 'ro_RO'; + +$languages['ru_RU']['NAME'] = 'Russian'; +$languages['ru_RU']['ALTNAME'] = 'Русский'; +$languages['ru_RU']['CHARSET'] = 'utf-8'; +$languages['ru_RU']['LOCALE'] = 'ru_RU.UTF-8'; +$languages['ru']['ALIAS'] = 'ru_RU'; + +$languages['sk_SK']['NAME'] = 'Slovak'; +$languages['sk_SK']['CHARSET'] = 'iso-8859-2'; +$languages['sk']['ALIAS'] = 'sk_SK'; + +$languages['sl_SI']['NAME'] = 'Slovenian'; +$languages['sl_SI']['ALTNAME'] = 'Slovenščina'; +$languages['sl_SI']['CHARSET'] = 'iso-8859-2'; +$languages['sl']['ALIAS'] = 'sl_SI'; + +$languages['sr_YU']['NAME'] = 'Serbian'; +$languages['sr_YU']['ALTNAME'] = 'Srpski'; +$languages['sr_YU']['CHARSET'] = 'iso-8859-2'; +$languages['sr']['ALIAS'] = 'sr_YU'; + +$languages['sv_SE']['NAME'] = 'Swedish'; +$languages['sv_SE']['ALTNAME'] = 'Svenska'; +$languages['sv_SE']['CHARSET'] = 'iso-8859-1'; +$languages['sv']['ALIAS'] = 'sv_SE'; + +$languages['th_TH']['NAME'] = 'Thai'; +$languages['th_TH']['CHARSET'] = 'tis-620'; +$languages['th']['ALIAS'] = 'th_TH'; + +$languages['tr_TR']['NAME'] = 'Turkish'; +$languages['tr_TR']['CHARSET'] = 'iso-8859-9'; +$languages['tr']['ALIAS'] = 'tr_TR'; + +$languages['zh_TW']['NAME'] = 'Chinese Trad'; +$languages['zh_TW']['CHARSET'] = 'big5'; +$languages['tw']['ALIAS'] = 'zh_TW'; + +$languages['zh_CN']['NAME'] = 'Chinese Simp'; +$languages['zh_CN']['CHARSET'] = 'gb2312'; +$languages['cn']['ALIAS'] = 'zh_CN'; + +/* +$languages['uk_UA']['NAME'] = 'Ukrainian'; +$languages['uk_UA']['CHARSET'] = 'koi8-u'; +$languages['uk']['ALIAS'] = 'uk_UA'; +*/ +/* +if ( file_exists( SM_PATH . 'locale/vi_VN') ) { + $languages['vi_VN']['NAME'] = 'Vietnamese'; + $languages['vi_VN']['CHARSET'] = 'utf-8'; + $languages['vi']['ALIAS'] = 'vi_VN'; +} +*/ + +// Right to left languages +$languages['ar']['NAME'] = 'Arabic'; +$languages['ar']['CHARSET'] = 'windows-1256'; +$languages['ar']['DIR'] = 'rtl'; + +$languages['he_IL']['NAME'] = 'Hebrew'; +$languages['he_IL']['CHARSET'] = 'windows-1255'; +$languages['he_IL']['DIR'] = 'rtl'; +$languages['he']['ALIAS'] = 'he_IL'; + +/* 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')) { + $gettext_flags += 4; +} + +/* If gettext is fully loaded, cool */ +if ($gettext_flags == 7) { + $use_gettext = true; +} +/* If we can fake gettext, try that */ +elseif ($gettext_flags == 0) { + $use_gettext = true; + include_once(SM_PATH . 'functions/gettext.php'); +} else { + /* Uh-ho. A weird install */ + if (! $gettext_flags & 1) { + function _($str) { + return $str; + } + } + if (! $gettext_flags & 2) { + function bindtextdomain() { + return; + } + } + if (! $gettext_flags & 4) { + function textdomain() { + return; + } + } +} + + +/* + * Japanese charset extra function + * + */ +function japanese_charset_xtra() { + $ret = func_get_arg(1); /* default return value */ + if (function_exists('mb_detect_encoding')) { + switch (func_get_arg(0)) { /* action */ + case 'decode': + $detect_encoding = @mb_detect_encoding($ret); + if ($detect_encoding == 'JIS' || + $detect_encoding == 'EUC-JP' || + $detect_encoding == 'SJIS' || + $detect_encoding == 'UTF-8') { + + $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV"); + } + break; + case 'encode': + $detect_encoding = @mb_detect_encoding($ret); + if ($detect_encoding == 'JIS' || + $detect_encoding == 'EUC-JP' || + $detect_encoding == 'SJIS' || + $detect_encoding == 'UTF-8') { + + $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO'); + } + break; + case 'strimwidth': + $width = func_get_arg(2); + $ret = mb_strimwidth($ret, 0, $width, '...'); + break; + case 'encodeheader': + $result = ''; + if (strlen($ret) > 0) { + $tmpstr = mb_substr($ret, 0, 1); + $prevcsize = strlen($tmpstr); + for ($i = 1; $i < mb_strlen($ret); $i++) { + $tmp = mb_substr($ret, $i, 1); + if (strlen($tmp) == $prevcsize) { + $tmpstr .= $tmp; + } else { + if ($prevcsize == 1) { + $result .= $tmpstr; + } else { + $result .= str_replace(' ', '', + mb_encode_mimeheader($tmpstr,'iso-2022-jp','B','')); + } + $tmpstr = $tmp; + $prevcsize = strlen($tmp); + } + } + if (strlen($tmpstr)) { + if (strlen(mb_substr($tmpstr, 0, 1)) == 1) + $result .= $tmpstr; + else + $result .= str_replace(' ', '', + mb_encode_mimeheader($tmpstr,'iso-2022-jp','B','')); + } + } + $ret = $result; + break; + case 'decodeheader': + $ret = str_replace("\t", "", $ret); + if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret)) + $ret = @mb_decode_mimeheader($ret); + $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO'); + break; + case 'downloadfilename': + $useragent = func_get_arg(2); + if (strstr($useragent, 'Windows') !== false || + strstr($useragent, 'Mac_') !== false) { + $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO'); + } else { + $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO'); +} + break; + case 'wordwrap': + $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" . + "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" . + "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" . + "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" . + "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" . + "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" . + "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" . + "\xa8\xa1\xa9\xa1\xcf\xa1\xd1"; + $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" . + "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef"; + $wrap = func_get_arg(2); + + if (strlen($ret) >= $wrap && + substr($ret, 0, 1) != '>' && + strpos($ret, 'http://') === FALSE && + strpos($ret, 'https://') === FALSE && + strpos($ret, 'ftp://') === FALSE) { + + $ret = mb_convert_kana($ret, "KV"); + + $line_new = ''; + $ptr = 0; + + while ($ptr < strlen($ret) - 1) { + $l = mb_strcut($ret, $ptr, $wrap); + $ptr += strlen($l); + $tmp = $l; + + $l = mb_strcut($ret, $ptr, 2); + while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) { + $tmp .= $l; + $ptr += strlen($l); + $l = mb_strcut($ret, $ptr, 1); + } + $line_new .= $tmp; + if ($ptr < strlen($ret) - 1) + $line_new .= "\n"; + } + $ret = $line_new; + } + break; + case 'utf7-imap_encode': + $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP'); + break; + case 'utf7-imap_decode': + $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP'); + break; + } + } + return $ret; +} + + +/* + * Korean charset extra function + * Hangul(Korean Character) Attached File Name Fix. + */ +function korean_charset_xtra() { + + $ret = func_get_arg(1); /* default return value */ + if (func_get_arg(0) == 'downloadfilename') { /* action */ + $ret = str_replace("\x0D\x0A", '', $ret); /* Hanmail's CR/LF Clear */ + for ($i=0;$i= "\xA1" && $ret[$i] <= "\xFE") { /* 0xA1 - 0XFE are Valid */ + $i++; + continue; + } else if (($ret[$i] >= 'a' && $ret[$i] <= 'z') || /* From Original ereg_replace in download.php */ + ($ret[$i] >= 'A' && $ret[$i] <= 'Z') || + ($ret[$i] == '.') || ($ret[$i] == '-')) { + continue; + } else { + $ret[$i] = '_'; + } + } + + } + + return $ret; +} + +/* + * This function can be used to replace non-braking space symbols + * that are inserted in forms by some browsers instead of normal + * space symbol. + */ +function cleanup_nbsp($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,' ',$string); +} + +function is_conversion_safe($input_charset) { + global $languages, $sm_notAlias, $default_charset; + + // 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; +} +?>