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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Console\Formatter;
use Symfony\Component\Console\Exception\InvalidArgumentException;
/**
* Formatter class for console output.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class OutputFormatter implements OutputFormatterInterface
{
private $decorated;
private $styles = array();
private $styleStack;
/**
* Escapes "<" special char in given text.
*
* @param string $text Text to escape
*
* @return string Escaped text
*/
public static function escape($text)
{
$text = preg_replace('/([^\\\\]?)</', '$1\\<', $text);
if ('\\' === substr($text, -1)) {
$len = strlen($text);
$text = rtrim($text, '\\');
$text .= str_repeat('<<', $len - strlen($text));
}
return $text;
}
/**
* Initializes console output formatter.
*
* @param bool $decorated Whether this formatter should actually decorate strings
* @param OutputFormatterStyleInterface[] $styles Array of "name => FormatterStyle" instances
*/
public function __construct($decorated = false, array $styles = array())
{
$this->decorated = (bool) $decorated;
$this->setStyle('error', new OutputFormatterStyle('white', 'red'));
$this->setStyle('info', new OutputFormatterStyle('green'));
$this->setStyle('comment', new OutputFormatterStyle('yellow'));
$this->setStyle('question', new OutputFormatterStyle('black', 'cyan'));
foreach ($styles as $name => $style) {
$this->setStyle($name, $style);
}
$this->styleStack = new OutputFormatterStyleStack();
}
/**
* Sets the decorated flag.
*
* @param bool $decorated Whether to decorate the messages or not
*/
public function setDecorated($decorated)
{
$this->decorated = (bool) $decorated;
}
/**
* Gets the decorated flag.
*
* @return bool true if the output will decorate messages, false otherwise
*/
public function isDecorated()
{
return $this->decorated;
}
/**
* Sets a new style.
*
* @param string $name The style name
* @param OutputFormatterStyleInterface $style The style instance
*/
public function setStyle($name, OutputFormatterStyleInterface $style)
{
$this->styles[strtolower($name)] = $style;
}
/**
* Checks if output formatter has style with specified name.
*
* @param string $name
*
* @return bool
*/
public function hasStyle($name)
{
return isset($this->styles[strtolower($name)]);
}
/**
* Gets style options from style with specified name.
*
* @param string $name
*
* @return OutputFormatterStyleInterface
*
* @throws InvalidArgumentException When style isn't defined
*/
public function getStyle($name)
{
if (!$this->hasStyle($name)) {
throw new InvalidArgumentException(sprintf('Undefined style: %s', $name));
}
return $this->styles[strtolower($name)];
}
/**
* Formats a message according to the given styles.
*
* @param string $message The message to style
*
* @return string The styled message
*/
public function format($message)
{
$message = (string) $message;
$offset = 0;
$output = '';
$tagRegex = '[a-z][a-z0-9_=;-]*+';
preg_match_all("#<(($tagRegex) | /($tagRegex)?)>#ix", $message, $matches, PREG_OFFSET_CAPTURE);
foreach ($matches[0] as $i => $match) {
$pos = $match[1];
$text = $match[0];
if (0 != $pos && '\\' == $message[$pos - 1]) {
continue;
}
// add the text up to the next tag
$output .= $this->applyCurrentStyle(substr($message, $offset, $pos - $offset));
$offset = $pos + strlen($text);
// opening tag?
if ($open = '/' != $text[1]) {
$tag = $matches[1][$i][0];
} else {
$tag = isset($matches[3][$i][0]) ? $matches[3][$i][0] : '';
}
if (!$open && !$tag) {
// </>
$this->styleStack->pop();
} elseif (false === $style = $this->createStyleFromString(strtolower($tag))) {
$output .= $this->applyCurrentStyle($text);
} elseif ($open) {
$this->styleStack->push($style);
} else {
$this->styleStack->pop($style);
}
}
$output .= $this->applyCurrentStyle(substr($message, $offset));
if (false !== strpos($output, '<<')) {
return strtr($output, array('\\<' => '<', '<<' => '\\'));
}
return str_replace('\\<', '<', $output);
}
/**
* @return OutputFormatterStyleStack
*/
public function getStyleStack()
{
return $this->styleStack;
}
/**
* Tries to create new style instance from string.
*
* @param string $string
*
* @return OutputFormatterStyle|bool false if string is not format string
*/
private function createStyleFromString($string)
{
if (isset($this->styles[$string])) {
return $this->styles[$string];
}
if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', strtolower($string), $matches, PREG_SET_ORDER)) {
return false;
}
$style = new OutputFormatterStyle();
foreach ($matches as $match) {
array_shift($match);
if ('fg' == $match[0]) {
$style->setForeground($match[1]);
} elseif ('bg' == $match[0]) {
$style->setBackground($match[1]);
} else {
try {
$style->setOption($match[1]);
} catch (\InvalidArgumentException $e) {
return false;
}
}
}
return $style;
}
/**
* Applies current style from stack to text, if must be applied.
*
* @param string $text Input text
*
* @return string Styled text
*/
private function applyCurrentStyle($text)
{
return $this->isDecorated() && strlen($text) > 0 ? $this->styleStack->getCurrent()->apply($text) : $text;
}
}
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