<?php
/**
 * Native Lanauge Support: Extractor Html Template
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

WBClass::load('WBNLS_Extractor');

/**
 * Native Lanauge Support: Extractor Html Template
 *
 * Extract translatable strings from patTemplate templates.
 *
 * @version 0.1.0
 * @package WB
 * @subpackage nls
 */
class WBNLS_Extractor_HtmlTemplate extends WBNLS_Extractor
{
    /**
     * markup scanner
     * @var WBMarkup_Scanner
     */
    private $scanner;

    /**
     * markup handler
     * @var WBMarkup_Handler_I18nExtractor
     */
    private $handler;

    /**
     * setup extractor
     *
     * Start scanner and handler
     *
     * @see WBMarkup_Handler_I18nExtractor_HtmlTemplate
     * @see WBMarkup_Scanner
     */
    protected function onStart()
    {
        $this->scanner  =   WBClass::create('WBMarkup_Scanner');
        $this->handler  =   WBClass::create('WBMarkup_Handler_I18nExtractor_HtmlTemplate');
        $this->handler->setImporter($this->imp);
        $this->scanner->setHandler($this->handler);
    }

    /**
     * actually extract messages
     *
     * Extract messages from all templates in template folder
     *
     * @return int $total
     */
    protected function extract()
    {
        $dir    =   WBParam::get('wb/dir/base') . '/template';
        return $this->extractTemplateDir($dir);
    }

    /**
     * tear down extractor
     */
    protected function onEnd()
    {
    }

    /**
     * recursively extract messages from template folders
     *
     * Walk through all template folders and scann all template files.
     * The markup scanner handler will acatually import found messages.
     *
     * @param string $dir template folder to scan
     * @return int $total number of scanned files
     */
    private function extractTemplateDir($dir)
    {
        $cnt    =   0;

        $dh =   new DirectoryIterator($dir);
        foreach ($dh as $i) {
            $name   =   $i->getFilename();
            if ($i->isDot() || '.' == $name[0]) {
                continue;
            }

            $path   =   $i->getRealpath();

            // recursion
            if ($i->isDir()) {
                $cnt    +=  $this->extractTemplateDir($path);
                continue;
            }

            $name   =   explode('.', $name);
            if ('tmpl' != end($name)) {
                continue;
            }
            $this->scanner->scanFile($path);
            ++$cnt;
        }

        return $cnt;
    }

}
?>