yiiapi/docs/viewer/controllers/GuideController.php

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<?php

class GuideController extends CController
{
	public $defaultAction='view';
	public $languageNames=array(
		'de'=>'German',
		'en'=>'English',
		'es'=>'Spanish',
		'fr'=>'French',
		'he'=>'Hebrew',
		'hu'=>'Hungarian',
		'id'=>'Indonesian',
		'it'=>'Italian',
		'nl'=>'Dutch',
		'no'=>'Norwegian',
		'ja'=>'Japanese',
		'pl'=>'Polish',
		'pt'=>'Portuguese',
		'pt_br'=>'Portuguese (Brazilian)',
		'ru'=>'Russian',
		'sv'=>'Swedish',
		'ta_in'=>'Tamil',
		'vi'=>'Vietnamese',
		'uk' => 'Ukrainian',
		'zh_cn'=>'Simplified Chinese',
		'zh_tw'=>'Traditional Chinese',
	);
	private $_languages;
	private $_language;
	private $_topics;

	public function actionView()
	{
		$topic=$this->getTopic();
		$file=Yii::getPathOfAlias("docs.guide.{$this->language}").DIRECTORY_SEPARATOR.$topic.'.txt';

		if(!is_file($file))
			$file=Yii::getPathOfAlias("docs.guide").DIRECTORY_SEPARATOR.$topic.'.txt';

		if(!strcasecmp($topic,'toc') || !is_file($file))
			throw new CHttpException(404,'The page you looked for does not exist.');

		$content=file_get_contents($file);
		$markdown=new MarkdownParser;
		$content=$markdown->safeTransform($content);

		$imageUrl=Yii::app()->baseUrl.'/guide/images';
		$content=preg_replace('/<p>\s*<img(.*?)src="(.*?)"\s+alt="(.*?)"\s*\/>\s*<\/p>/',
			"<div class=\"image\"><p>\\3</p><img\\1src=\"$imageUrl/\\2\" alt=\"\\3\" /></div>",$content);

		$content=preg_replace_callback('/href="\/doc\/guide\/(.*?)\/?"/',array($this,'replaceGuideLink'),$content);
		$content=preg_replace('/href="(\/doc\/api\/.*?)"/','href="http://www.yiiframework.com$1"',$content);

		$this->pageTitle='The Definitive Guide to Yii';
		if($topic!=='index' && preg_match('/<h1[^>]*>(.*?)</',$content,$matches))
			$this->pageTitle.=' - '.CHtml::encode($matches[1]);

		$this->render('view',array('content'=>$content));
	}