|
|
|
|
<?php
|
|
|
|
|
/**
|
|
|
|
|
* @link http://www.yiiframework.com/
|
|
|
|
|
* @copyright Copyright (c) 2008 Yii Software LLC
|
|
|
|
|
* @license http://www.yiiframework.com/license/
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
namespace yii\widgets;
|
|
|
|
|
|
|
|
|
|
use yii\base\Widget;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Spaceless widget removes whitespace characters between HTML tags. Whitespaces within HTML tags
|
|
|
|
|
* or in a plain text are always left untouched.
|
|
|
|
|
*
|
|
|
|
|
* Usage example:
|
|
|
|
|
*
|
|
|
|
|
* ```php
|
|
|
|
|
* <body>
|
|
|
|
|
* <?php Spaceless::begin(); ?>
|
|
|
|
|
* <div class="nav-bar">
|
|
|
|
|
* <!-- tags -->
|
|
|
|
|
* </div>
|
|
|
|
|
* <div class="content">
|
|
|
|
|
* <!-- tags -->
|
|
|
|
|
* </div>
|
|
|
|
|
* <?php Spaceless::end(); ?>
|
|
|
|
|
* </body>
|
|
|
|
|
* ```
|
|
|
|
|
*
|
|
|
|
|
* This example will generate the following HTML:
|
|
|
|
|
*
|
|
|
|
|
* ```html
|
|
|
|
|
* <body>
|
|
|
|
|
* <div class="navbar"><!-- other tags --></div><div class="content"><!-- other tags --></div></body>
|
|
|
|
|
* ```
|
|
|
|
|
*
|
|
|
|
|
* This method is not designed for content compression (you should use `gzip` output compression to
|
|
|
|
|
* achieve it). Main intention is to strip out extra whitespace characters between HTML tags in order
|
|
|
|
|
* to avoid browser rendering quirks in some circumstances (e.g. newlines between inline-block elements).
|
|
|
|
|
*
|
|
|
|
|
* Note, never use this method with `pre` or `textarea` tags. It's not that trivial to deal with such tags
|
|
|
|
|
* as it may seem at first sight. For this case you should consider using
|
|
|
|
|
* [HTML Tidy Project](http://tidy.sourceforge.net/) instead.
|
|
|
|
|
*
|
|
|
|
|
* @see http://tidy.sourceforge.net/
|
|
|
|
|
* @author resurtm <resurtm@gmail.com>
|
|
|
|
|
* @since 2.0
|
|
|
|
|
*/
|
|
|
|
|
class Spaceless extends Widget
|
|
|
|
|
{
|
|
|
|
|
/**
|
|
|
|
|
* Starts capturing an output to be cleaned from whitespace characters between HTML tags.
|
|
|
|
|
*/
|
|
|
|
|
public function init()
|
|
|
|
|
{
|
|
|
|
|
ob_start();
|
|
|
|
|
ob_implicit_flush(false);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Marks the end of content to be cleaned from whitespace characters between HTML tags.
|
|
|
|
|
* Stops capturing an output and echoes cleaned result.
|
|
|
|
|
*/
|
|
|
|
|
public function run()
|
|
|
|
|
{
|
|
|
|
|
echo trim(preg_replace('/>\s+</', '><', ob_get_clean()));
|
|
|
|
|
}
|
|
|
|
|
}
|
