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<?php
/**
* Internationalization
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs
* @since CakePHP(tm) v 1.2.0.4116
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Included libraries.
*/
App::import('Core', array('l10n', 'Multibyte'));
/**
* I18n handles translation of Text and time format strings.
*
* @package cake
* @subpackage cake.cake.libs
*/
class I18n extends Object {
/**
* Instance of the I10n class for localization
*
* @var I10n
* @access public
*/
var $l10n = null;
/**
* Current domain of translation
*
* @var string
* @access public
*/
var $domain = null;
/**
* Current category of translation
*
* @var string
* @access public
*/
var $category = 'LC_MESSAGES';
/**
* Current language used for translations
*
* @var string
* @access private
*/
var $__lang = null;
/**
* Translation strings for a specific domain read from the .mo or .po files
*
* @var array
* @access private
*/
var $__domains = array();
/**
* Set to true when I18N::__bindTextDomain() is called for the first time.
* If a translation file is found it is set to false again
*
* @var boolean
* @access private
*/
var $__noLocale = false;
/**
* Set to true when I18N::__bindTextDomain() is called for the first time.
* If a translation file is found it is set to false again
*
* @var array
* @access private
*/
var $__categories = array(
'LC_ALL', 'LC_COLLATE', 'LC_CTYPE', 'LC_MONETARY', 'LC_NUMERIC', 'LC_TIME', 'LC_MESSAGES'
);
/**
* Return a static instance of the I18n class
*
* @return object I18n
* @access public
*/
function &getInstance() {
static $instance = array();
if (!$instance) {
$instance[0] =& new I18n();
$instance[0]->l10n =& new L10n();
}
return $instance[0];
}
/**
* Used by the translation functions in basics.php
* Can also be used like I18n::translate(); but only if the App::import('I18n'); has been used to load the class.
*
* @param string $singular String to translate
* @param string $plural Plural string (if any)
* @param string $domain Domain The domain of the translation. Domains are often used by plugin translations
* @param string $category Category The integer value of the category to use.
* @param integer $count Count Count is used with $plural to choose the correct plural form.
* @return string translated string.
* @access public
*/
function translate($singular, $plural = null, $domain = null, $category = 6, $count = null) {
$_this =& I18n::getInstance();
if (strpos($singular, "\r\n") !== false) {
$singular = str_replace("\r\n", "\n", $singular);
}
if ($plural !== null && strpos($plural, "\r\n") !== false) {
$plural = str_replace("\r\n", "\n", $plural);
}
if (is_numeric($category)) {
$_this->category = $_this->__categories[$category];
}
$language = Configure::read('Config.language');
if (!empty($_SESSION['Config']['language'])) {
$language = $_SESSION['Config']['language'];
}
if (($_this->__lang && $_this->__lang !== $language) || !$_this->__lang) {
$lang = $_this->l10n->get($language);
$_this->__lang = $lang;
}
if (is_null($domain)) {
$domain = 'default';
}
$_this->domain = $domain . '_' . $_this->l10n->lang;
if (empty($_this->__domains[$domain][$_this->__lang])) {
$_this->__domains[$domain][$_this->__lang] = Cache::read($_this->domain, '_cake_core_');
}
if (empty($_this->__domains[$domain][$_this->__lang][$_this->category])) {
$_this->__bindTextDomain($domain);
Cache::write($_this->domain, $_this->__domains[$domain][$_this->__lang], '_cake_core_');
}
if ($_this->category == 'LC_TIME') {
return $_this->__translateTime($singular,$domain);
}
if (!isset($count)) {
$plurals = 0;
} elseif (!empty($_this->__domains[$domain][$_this->__lang][$_this->category]["%plural-c"]) && $_this->__noLocale === false) {
$header = $_this->__domains[$domain][$_this->__lang][$_this->category]["%plural-c"];
$plurals = $_this->__pluralGuess($header, $count);
} else {
if ($count != 1) {
$plurals = 1;
} else {
$plurals = 0;
}
}
if (!empty($_this->__domains[$domain][$_this->__lang][$_this->category][$singular])) {
if (($trans = $_this->__domains[$domain][$_this->__lang][$_this->category][$singular]) || ($plurals) && ($trans = $_this->__domains[$domain][$_this->__lang][$_this->category][$plural])) {
if (is_array($trans)) {
if (isset($trans[$plurals])) {
$trans = $trans[$plurals];
}
}
if (strlen($trans)) {
return $trans;
}
}
}
if (!empty($plurals)) {
return $plural;
}
return $singular;
}
/**
* Clears the domains internal data array. Useful for testing i18n.
*
* @return void
*/
function clear() {
$self =& I18n::getInstance();
$self->__domains = array();
}
/**
* Attempts to find the plural form of a string.
*
* @param string $header Type
* @param integrer $n Number
* @return integer plural match
* @access private
*/
function __pluralGuess($header, $n) {
if (!is_string($header) || $header === "nplurals=1;plural=0;" || !isset($header[0])) {
return 0;
}
if ($header === "nplurals=2;plural=n!=1;") {
return $n != 1 ? 1 : 0;
} elseif ($header === "nplurals=2;plural=n>1;") {
return $n > 1 ? 1 : 0;
}
if (strpos($header, "plurals=3")) {
if (strpos($header, "100!=11")) {
if (strpos($header, "10<=4")) {
return $n % 10 == 1 && $n % 100 != 11 ? 0 : ($n % 10 >= 2 && $n % 10 <= 4 && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
} elseif (strpos($header, "100<10")) {
return $n % 10 == 1 && $n % 100 != 11 ? 0 : ($n % 10 >= 2 && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
}
return $n % 10 == 1 && $n % 100 != 11 ? 0 : ($n != 0 ? 1 : 2);
} elseif (strpos($header, "n==2")) {
return $n == 1 ? 0 : ($n == 2 ? 1 : 2);
} elseif (strpos($header, "n==0")) {
return $n == 1 ? 0 : ($n == 0 || ($n % 100 > 0 && $n % 100 < 20) ? 1 : 2);
} elseif (strpos($header, "n>=2")) {
return $n == 1 ? 0 : ($n >= 2 && $n <= 4 ? 1 : 2);
} elseif (strpos($header, "10>=2")) {
return $n == 1 ? 0 : ($n % 10 >= 2 && $n % 10 <= 4 && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
}
return $n % 10 == 1 ? 0 : ($n % 10 == 2 ? 1 : 2);
} elseif (strpos($header, "plurals=4")) {
if (strpos($header, "100==2")) {
return $n % 100 == 1 ? 0 : ($n % 100 == 2 ? 1 : ($n % 100 == 3 || $n % 100 == 4 ? 2 : 3));
} elseif (strpos($header, "n>=3")) {
return $n == 1 ? 0 : ($n == 2 ? 1 : ($n == 0 || ($n >= 3 && $n <= 10) ? 2 : 3));
} elseif (strpos($header, "100>=1")) {
return $n == 1 ? 0 : ($n == 0 || ($n % 100 >= 1 && $n % 100 <= 10) ? 1 : ($n % 100 >= 11 && $n % 100 <= 20 ? 2 : 3));
}
} elseif (strpos($header, "plurals=5")) {
return $n == 1 ? 0 : ($n == 2 ? 1 : ($n >= 3 && $n <= 6 ? 2 : ($n >= 7 && $n <= 10 ? 3 : 4)));
}
}
/**
* Binds the given domain to a file in the specified directory.
*
* @param string $domain Domain to bind
* @return string Domain binded
* @access private
*/
function __bindTextDomain($domain) {
$this->__noLocale = true;
$core = true;
$merge = array();
$searchPaths = App::path('locales');
$plugins = App::objects('plugin');
if (!empty($plugins)) {
foreach ($plugins as $plugin) {
$plugin = Inflector::underscore($plugin);
if ($plugin === $domain) {
$searchPaths[] = App::pluginPath($plugin) . DS . 'locale' . DS;
$searchPaths = array_reverse($searchPaths);
break;
}
}
}
foreach ($searchPaths as $directory) {
foreach ($this->l10n->languagePath as $lang) {
$file = $directory . $lang . DS . $this->category . DS . $domain;
$localeDef = $directory . $lang . DS . $this->category;
if ($core) {
$app = $directory . $lang . DS . $this->category . DS . 'core';
if (file_exists($fn = "$app.mo")) {
$this->__loadMo($fn, $domain);
$this->__noLocale = false;
$merge[$domain][$this->__lang][$this->category] = $this->__domains[$domain][$this->__lang][$this->category];
$core = null;
} elseif (file_exists($fn = "$app.po") && ($f = fopen($fn, "r"))) {
$this->__loadPo($f, $domain);
$this->__noLocale = false;
$merge[$domain][$this->__lang][$this->category] = $this->__domains[$domain][$this->__lang][$this->category];
$core = null;
}
}
if (file_exists($fn = "$file.mo")) {
$this->__loadMo($fn, $domain);
$this->__noLocale = false;
break 2;
} elseif (file_exists($fn = "$file.po") && ($f = fopen($fn, "r"))) {
$this->__loadPo($f, $domain);
$this->__noLocale = false;
break 2;
} elseif (is_file($localeDef) && ($f = fopen($localeDef, "r"))) {
$this->__loadLocaleDefinition($f, $domain);
$this->__noLocale = false;
return $domain;
}
}
}
if (empty($this->__domains[$domain][$this->__lang][$this->category])) {
$this->__domains[$domain][$this->__lang][$this->category] = array();
return $domain;
}
if ($head = $this->__domains[$domain][$this->__lang][$this->category][""]) {
foreach (explode("\n", $head) as $line) {
$header = strtok($line,":");
$line = trim(strtok("\n"));
$this->__domains[$domain][$this->__lang][$this->category]["%po-header"][strtolower($header)] = $line;
}
if (isset($this->__domains[$domain][$this->__lang][$this->category]["%po-header"]["plural-forms"])) {
$switch = preg_replace("/(?:[() {}\\[\\]^\\s*\\]]+)/", "", $this->__domains[$domain][$this->__lang][$this->category]["%po-header"]["plural-forms"]);
$this->__domains[$domain][$this->__lang][$this->category]["%plural-c"] = $switch;
unset($this->__domains[$domain][$this->__lang][$this->category]["%po-header"]);
}
$this->__domains = Set::pushDiff($this->__domains, $merge);
if (isset($this->__domains[$domain][$this->__lang][$this->category][null])) {
unset($this->__domains[$domain][$this->__lang][$this->category][null]);
}
}
return $domain;
}
/**
* Loads the binary .mo file for translation and sets the values for this translation in the var I18n::__domains
*
* @param resource $file Binary .mo file to load
* @param string $domain Domain where to load file in
* @access private
*/
function __loadMo($file, $domain) {
$data = file_get_contents($file);
if ($data) {
$header = substr($data, 0, 20);
$header = unpack("L1magic/L1version/L1count/L1o_msg/L1o_trn", $header);
extract($header);
if ((dechex($magic) == '950412de' || dechex($magic) == 'ffffffff950412de') && $version == 0) {
for ($n = 0; $n < $count; $n++) {
$r = unpack("L1len/L1offs", substr($data, $o_msg + $n * 8, 8));
$msgid = substr($data, $r["offs"], $r["len"]);
unset($msgid_plural);
if (strpos($msgid, "\000")) {
list($msgid, $msgid_plural) = explode("\000", $msgid);
}
$r = unpack("L1len/L1offs", substr($data, $o_trn + $n * 8, 8));
$msgstr = substr($data, $r["offs"], $r["len"]);
if (strpos($msgstr, "\000")) {
$msgstr = explode("\000", $msgstr);
}
$this->__domains[$domain][$this->__lang][$this->category][$msgid] = $msgstr;
if (isset($msgid_plural)) {
$this->__domains[$domain][$this->__lang][$this->category][$msgid_plural] =& $this->__domains[$domain][$this->__lang][$this->category][$msgid];
}
}
}
}
}
/**
* Loads the text .po file for translation and sets the values for this translation in the var I18n::__domains
*
* @param resource $file Text .po file to load
* @param string $domain Domain to load file in
* @return array Binded domain elements
* @access private
*/
function __loadPo($file, $domain) {
$type = 0;
$translations = array();
$translationKey = "";
$plural = 0;
$header = "";
do {
$line = trim(fgets($file));
if ($line == "" || $line[0] == "#") {
continue;
}
if (preg_match("/msgid[[:space:]]+\"(.+)\"$/i", $line, $regs)) {
$type = 1;
$translationKey = stripcslashes($regs[1]);
} elseif (preg_match("/msgid[[:space:]]+\"\"$/i", $line, $regs)) {
$type = 2;
$translationKey = "";
} elseif (preg_match("/^\"(.*)\"$/i", $line, $regs) && ($type == 1 || $type == 2 || $type == 3)) {
$type = 3;
$translationKey .= stripcslashes($regs[1]);
} elseif (preg_match("/msgstr[[:space:]]+\"(.+)\"$/i", $line, $regs) && ($type == 1 || $type == 3) && $translationKey) {
$translations[$translationKey] = stripcslashes($regs[1]);
$type = 4;
} elseif (preg_match("/msgstr[[:space:]]+\"\"$/i", $line, $regs) && ($type == 1 || $type == 3) && $translationKey) {
$type = 4;
$translations[$translationKey] = "";
} elseif (preg_match("/^\"(.*)\"$/i", $line, $regs) && $type == 4 && $translationKey) {
$translations[$translationKey] .= stripcslashes($regs[1]);
} elseif (preg_match("/msgid_plural[[:space:]]+\".*\"$/i", $line, $regs)) {
$type = 6;
} elseif (preg_match("/^\"(.*)\"$/i", $line, $regs) && $type == 6 && $translationKey) {
$type = 6;
} elseif (preg_match("/msgstr\[(\d+)\][[:space:]]+\"(.+)\"$/i", $line, $regs) && ($type == 6 || $type == 7) && $translationKey) {
$plural = $regs[1];
$translations[$translationKey][$plural] = stripcslashes($regs[2]);
$type = 7;
} elseif (preg_match("/msgstr\[(\d+)\][[:space:]]+\"\"$/i", $line, $regs) && ($type == 6 || $type == 7) && $translationKey) {
$plural = $regs[1];
$translations[$translationKey][$plural] = "";
$type = 7;
} elseif (preg_match("/^\"(.*)\"$/i", $line, $regs) && $type == 7 && $translationKey) {
$translations[$translationKey][$plural] .= stripcslashes($regs[1]);
} elseif (preg_match("/msgstr[[:space:]]+\"(.+)\"$/i", $line, $regs) && $type == 2 && !$translationKey) {
$header .= stripcslashes($regs[1]);
$type = 5;
} elseif (preg_match("/msgstr[[:space:]]+\"\"$/i", $line, $regs) && !$translationKey) {
$header = "";
$type = 5;
} elseif (preg_match("/^\"(.*)\"$/i", $line, $regs) && $type == 5) {
$header .= stripcslashes($regs[1]);
} else {
unset($translations[$translationKey]);
$type = 0;
$translationKey = "";
$plural = 0;
}
} while (!feof($file));
fclose($file);
$merge[""] = $header;
return $this->__domains[$domain][$this->__lang][$this->category] = array_merge($merge ,$translations);
}
/**
* Parses a locale definition file following the POSIX standard
*
* @param resource $file file handler
* @param string $domain Domain where locale definitions will be stored
* @return void
* @access private
*/
function __loadLocaleDefinition($file, $domain = null) {
$comment = '#';
$escape = '\\';
$currentToken = false;
$value = '';
while ($line = fgets($file)) {
$line = trim($line);
if (empty($line) || $line[0] === $comment) {
continue;
}
$parts = preg_split("/[[:space:]]+/",$line);
if ($parts[0] === 'comment_char') {
$comment = $parts[1];
continue;
}
if ($parts[0] === 'escape_char') {
$escape = $parts[1];
continue;
}
$count = count($parts);
if ($count == 2) {
$currentToken = $parts[0];
$value = $parts[1];
} elseif ($count == 1) {
$value .= $parts[0];
} else {
continue;
}
$len = strlen($value) - 1;
if ($value[$len] === $escape) {
$value = substr($value, 0, $len);
continue;
}
$mustEscape = array($escape . ',' , $escape . ';', $escape . '<', $escape . '>', $escape . $escape);
$replacements = array_map('crc32', $mustEscape);
$value = str_replace($mustEscape, $replacements, $value);
$value = explode(';', $value);
$this->__escape = $escape;
foreach ($value as $i => $val) {
$val = trim($val, '"');
$val = preg_replace_callback('/(?:<)?(.[^>]*)(?:>)?/', array(&$this, '__parseLiteralValue'), $val);
$val = str_replace($replacements, $mustEscape, $val);
$value[$i] = $val;
}
if (count($value) == 1) {
$this->__domains[$domain][$this->__lang][$this->category][$currentToken] = array_pop($value);
} else {
$this->__domains[$domain][$this->__lang][$this->category][$currentToken] = $value;
}
}
}
/**
* Auxiliary function to parse a symbol from a locale definition file
*
* @param string $string Symbol to be parsed
* @return string parsed symbol
* @access private
*/
function __parseLiteralValue($string) {
$string = $string[1];
if (substr($string, 0, 2) === $this->__escape . 'x') {
$delimiter = $this->__escape . 'x';
return join('', array_map('chr', array_map('hexdec',array_filter(explode($delimiter, $string)))));
}
if (substr($string, 0, 2) === $this->__escape . 'd') {
$delimiter = $this->__escape . 'd';
return join('', array_map('chr', array_filter(explode($delimiter, $string))));
}
if ($string[0] === $this->__escape && isset($string[1]) && is_numeric($string[1])) {
$delimiter = $this->__escape;
return join('', array_map('chr', array_filter(explode($delimiter, $string))));
}
if (substr($string, 0, 3) === 'U00') {
$delimiter = 'U00';
return join('', array_map('chr', array_map('hexdec', array_filter(explode($delimiter, $string)))));
}
if (preg_match('/U([0-9a-fA-F]{4})/', $string, $match)) {
return Multibyte::ascii(array(hexdec($match[1])));
}
return $string;
}
/**
* Returns a Time format definition from corresponding domain
*
* @param string $format Format to be translated
* @param string $domain Domain where format is stored
* @return mixed translated format string if only value or array of translated strings for corresponding format.
* @access private
*/
function __translateTime($format, $domain) {
if (!empty($this->__domains[$domain][$this->__lang]['LC_TIME'][$format])) {
if (($trans = $this->__domains[$domain][$this->__lang][$this->category][$format])) {
return $trans;
}
}
return $format;
}
}
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