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<?php
/**
* Represents a language and defines localizable string formatting and
* other functions, as well as the localized messages for HTML Purifier.
*/
class HTMLPurifier_Language
{
/**
* ISO 639 language code of language. Prefers shortest possible version
*/
public $code = 'en';
/**
* Fallback language code
*/
public $fallback = false;
/**
* Array of localizable messages
*/
public $messages = array();
/**
* Array of localizable error codes
*/
public $errorNames = array();
/**
* True if no message file was found for this language, so English
* is being used instead. Check this if you'd like to notify the
* user that they've used a non-supported language.
*/
public $error = false;
/**
* Has the language object been loaded yet?
* @todo Make it private, fix usage in HTMLPurifier_LanguageTest
*/
public $_loaded = false;
/**
* Instances of HTMLPurifier_Config and HTMLPurifier_Context
*/
protected $config, $context;
public function __construct($config, $context) {
$this->config = $config;
$this->context = $context;
}
/**
* Loads language object with necessary info from factory cache
* @note This is a lazy loader
*/
public function load() {
if ($this->_loaded) return;
$factory = HTMLPurifier_LanguageFactory::instance();
$factory->loadLanguage($this->code);
foreach ($factory->keys as $key) {
$this->$key = $factory->cache[$this->code][$key];
}
$this->_loaded = true;
}
/**
* Retrieves a localised message.
* @param $key string identifier of message
* @return string localised message
*/
public function getMessage($key) {
if (!$this->_loaded) $this->load();
if (!isset($this->messages[$key])) return "[$key]";
return $this->messages[$key];
}
/**
* Retrieves a localised error name.
* @param $int integer error number, corresponding to PHP's error
* reporting
* @return string localised message
*/
public function getErrorName($int) {
if (!$this->_loaded) $this->load();
if (!isset($this->errorNames[$int])) return "[Error: $int]";
return $this->errorNames[$int];
}
/**
* Converts an array list into a string readable representation
*/
public function listify($array) {
$sep = $this->getMessage('Item separator');
$sep_last = $this->getMessage('Item separator last');
$ret = '';
for ($i = 0, $c = count($array); $i < $c; $i++) {
if ($i == 0) {
} elseif ($i + 1 < $c) {
$ret .= $sep;
} else {
$ret .= $sep_last;
}
$ret .= $array[$i];
}
return $ret;
}
/**
* Formats a localised message with passed parameters
* @param $key string identifier of message
* @param $args Parameters to substitute in
* @return string localised message
* @todo Implement conditionals? Right now, some messages make
* reference to line numbers, but those aren't always available
*/
public function formatMessage($key, $args = array()) {
if (!$this->_loaded) $this->load();
if (!isset($this->messages[$key])) return "[$key]";
$raw = $this->messages[$key];
$subst = array();
$generator = false;
foreach ($args as $i => $value) {
if (is_object($value)) {
if ($value instanceof HTMLPurifier_Token) {
// factor this out some time
if (!$generator) $generator = $this->context->get('Generator');
if (isset($value->name)) $subst['$'.$i.'.Name'] = $value->name;
if (isset($value->data)) $subst['$'.$i.'.Data'] = $value->data;
$subst['$'.$i.'.Compact'] =
$subst['$'.$i.'.Serialized'] = $generator->generateFromToken($value);
// a more complex algorithm for compact representation
// could be introduced for all types of tokens. This
// may need to be factored out into a dedicated class
if (!empty($value->attr)) {
$stripped_token = clone $value;
$stripped_token->attr = array();
$subst['$'.$i.'.Compact'] = $generator->generateFromToken($stripped_token);
}
$subst['$'.$i.'.Line'] = $value->line ? $value->line : 'unknown';
}
continue;
} elseif (is_array($value)) {
$keys = array_keys($value);
if (array_keys($keys) === $keys) {
// list
$subst['$'.$i] = $this->listify($value);
} else {
// associative array
// no $i implementation yet, sorry
$subst['$'.$i.'.Keys'] = $this->listify($keys);
$subst['$'.$i.'.Values'] = $this->listify(array_values($value));
}
continue;
}
$subst['$' . $i] = $value;
}
return strtr($raw, $subst);
}
}
// vim: et sw=4 sts=4
|
