isLocale example

        if (is_object($date) and !($date instanceof Zend_Date)) {
            if ($locale instanceof Zend_Locale) {
                $locale = $date;
                $date   = null;
                $part   = null;
            } else {
                $date = (string) $date;
            }
        }

        if (($date !== null) and !is_array($date)  and !($date instanceof Zend_Date) and !defined($date) and Zend_Locale::isLocale($date, true, false)) {
            $locale = $date;
            $date   = null;
            $part   = null;
        } else if (($part !== null) and !defined($part) and Zend_Locale::isLocale($part, true, false)) {
            $locale = $part;
            $part   = null;
        }

        $this->setLocale($locale);
        if (is_string($date) && ($part === null) && (strlen($date) <= 5)) {
            $part = $date;
            

public function setLocale($locale = null)
    {
        if (is_string($locale)) {
            $locale = array($locale);
        } elseif ($locale instanceof Zend_Locale) {
            $locale = array($locale->toString());
        } elseif (!is_array($locale)) {
            throw new Zend_Filter_Exception('Locale has to be string, array or an instance of Zend_Locale');
        }

        foreach ($locale as $single) {
            if (!Zend_Locale::isLocale($single)) {
                throw new Zend_Filter_Exception("Unknown locale '$single'");
            }
        }

        $this->_locale = $locale;
        return $this;
    }

    /** * Returns the casting option * * @return boolean */

    public function __construct($options = null, $locale = null)
    {
        $calloptions = $options;
        if (is_array($options) && isset($options['display'])) {
            $this->_options['display'] = $options['display'];
        }

        if (is_array($options)) {
            $this->setLocale($locale);
            $this->setFormat($options);
        } else if (Zend_Locale::isLocale($options, false, false)) {
            $this->setLocale($options);
            $options = $locale;
        } else {
            $this->setLocale($locale);
        }

        // Get currency details         if (!isset($this->_options['currency']) || !is_array($options)) {
            $this->_options['currency'] = self::getShortName($options, $this->_options['locale']);
        }

        

        if ($this->_seg !== null) {
            $this->_content .= "<".$name;
            foreach($attrib as $key => $value) {
                $this->_content .= " $key=\"$value\"";
            }
            $this->_content .= ">";
        } else {
            switch(strtolower($name)) {
                case 'header':
                    if (empty($this->_useId) && isset($attrib['srclang'])) {
                        if (Zend_Locale::isLocale($attrib['srclang'])) {
                            $this->_srclang = Zend_Locale::findLocale($attrib['srclang']);
                        } else {
                            if (!$this->_options['disableNotices']) {
                                if ($this->_options['log']) {
                                    $this->_options['log']->notice("The language '{$attrib['srclang']}' can not be set because it does not exist.");
                                } else {
                                    trigger_error("The language '{$attrib['srclang']}' can not be set because it does not exist.", E_USER_NOTICE);
                                }
                            }

                            $this->_srclang = $attrib['srclang'];
                        }

    private static function _checkLocale($locale)
    {
        if (empty($locale)) {
            $locale = new Zend_Locale();
        }

        if (!(Zend_Locale::isLocale((string) $locale, null, false))) {
            throw new Zend_Locale_Exception('Locale (' . (string) $locale . ') is a unknown locale');
        }

        return (string) $locale;
    }

    /** * Internal method to check if the given cache supports tags * * @param Zend_Cache $cache */
    

                    }
                } else {
                    if (strpos($directory, DIRECTORY_SEPARATOR . $options['ignore']) !== false) {
                        // ignore files matching first characters from option 'ignore' and all files below                         continue;
                    }
                }

                if ($info->isDir()) {
                    // pathname as locale                     if (($options['scan'] === self::LOCALE_DIRECTORY) and (Zend_Locale::isLocale($file, true, false))) {
                        $options['locale'] = $file;
                        $prev              = (string) $options['locale'];
                    }
                } else if ($info->isFile()) {
                    // filename as locale                     if ($options['scan'] === self::LOCALE_FILENAME) {
                        $filename = explode('.', $file);
                        array_pop($filename);
                        $filename = implode('.', $filename);
                        if (Zend_Locale::isLocale((string) $filename, true, false)) {
                            $options['locale'] = (string) $filename;
                        }

    public static function findLocale($locale = null)
    {
        if ($locale === null) {
            $locale = new Zend_Locale();
        }

        if (!Zend_Locale::isLocale($locale, true, false)) {
            if (!Zend_Locale::isLocale($locale, false, false)) {
                $locale = Zend_Locale::getLocaleToTerritory($locale);

                if (empty($locale)) {
                    throw new Zend_Locale_Exception("The locale '$locale' is no known locale");
                }
            } else {
                $locale = new Zend_Locale($locale);
            }
        }