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<?php
/**
* Part of the Joomla Framework Application Package
*
* @copyright Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Application\Cli\Output\Processor;
use Joomla\Application\Cli\ColorStyle;
use Joomla\Application\Cli\Output\Stdout;
/**
* Class ColorProcessor.
*
* @since 1.0
*/
class ColorProcessor implements ProcessorInterface
{
/**
* Flag to remove color codes from the output
*
* @var boolean
* @since 1.0
*/
public $noColors = false;
/**
* Regex to match tags
*
* @var string
* @since 1.0
*/
protected $tagFilter = '/<([a-z=;]+)>(.*?)<\/\\1>/s';
/**
* Regex used for removing color codes
*
* @var string
* @since 1.0
*/
protected static $stripFilter = '/<[\/]?[a-z=;]+>/';
/**
* Array of ColorStyle objects
*
* @var array
* @since 1.0
*/
protected $styles = array();
/**
* Class constructor
*
* @since 1.1.0
*/
public function __construct()
{
$this->addPredefinedStyles();
}
/**
* Add a style.
*
* @param string $name The style name.
* @param ColorStyle $style The color style.
*
* @return ColorProcessor Instance of $this to allow chaining.
*
* @since 1.0
*/
public function addStyle($name, ColorStyle $style)
{
$this->styles[$name] = $style;
return $this;
}
/**
* Strip color tags from a string.
*
* @param string $string The string.
*
* @return string
*
* @since 1.0
*/
public static function stripColors($string)
{
return preg_replace(static::$stripFilter, '', $string);
}
/**
* Process a string.
*
* @param string $string The string to process.
*
* @return string
*
* @since 1.0
*/
public function process($string)
{
preg_match_all($this->tagFilter, $string, $matches);
if (!$matches)
{
return $string;
}
foreach ($matches[0] as $i => $m)
{
if (array_key_exists($matches[1][$i], $this->styles))
{
$string = $this->replaceColors($string, $matches[1][$i], $matches[2][$i], $this->styles[$matches[1][$i]]);
}
// Custom format
elseif (strpos($matches[1][$i], '='))
{
$string = $this->replaceColors($string, $matches[1][$i], $matches[2][$i], ColorStyle::fromString($matches[1][$i]));
}
}
return $string;
}
/**
* Replace color tags in a string.
*
* @param string $text The original text.
* @param string $tag The matched tag.
* @param string $match The match.
* @param ColorStyle $style The color style to apply.
*
* @return mixed
*
* @since 1.0
*/
private function replaceColors($text, $tag, $match, Colorstyle $style)
{
$replace = $this->noColors
? $match
: "\033[" . $style . "m" . $match . "\033[0m";
return str_replace('<' . $tag . '>' . $match . '</' . $tag . '>', $replace, $text);
}
/**
* Adds predefined color styles to the ColorProcessor object
*
* @return Stdout Instance of $this to allow chaining.
*
* @since 1.0
*/
private function addPredefinedStyles()
{
$this->addStyle(
'info',
new ColorStyle('green', '', array('bold'))
);
$this->addStyle(
'comment',
new ColorStyle('yellow', '', array('bold'))
);
$this->addStyle(
'question',
new ColorStyle('black', 'cyan')
);
$this->addStyle(
'error',
new ColorStyle('white', 'red')
);
return $this;
}
}