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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 = [];
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\\<', $text);
return self::escapeTrailingBackslash($text);
}
/**
* Escapes trailing "\" in given text.
*
* @param string $text Text to escape
*
* @return string Escaped text
*
* @internal
*/
public static function escapeTrailingBackslash($text)
{
if ('\\' === substr($text, -1)) {
$len = \strlen($text);
$text = rtrim($text, '\\');
$text = str_replace("\0", '', $text);
$text .= str_repeat("\0", $len - \strlen($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(bool $decorated = false, array $styles = [])
{
$this->decorated = $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);
}
$this->styleStack = new OutputFormatterStyleStack();
}
/**
* {@inheritdoc}
*/
public function setDecorated($decorated)
{
$this->decorated = (bool) $decorated;
}
/**
* {@inheritdoc}
*/
public function isDecorated()
{
return $this->decorated;
}
/**
* {@inheritdoc}
*/
public function setStyle($name, OutputFormatterStyleInterface $style)
{
$this->styles[strtolower($name)] = $style;
}
/**
* {@inheritdoc}
*/
public function hasStyle($name)
{
return isset($this->styles[strtolower($name)]);
}
/**
* {@inheritdoc}
*/
public function getStyle($name)
{
if (!$this->hasStyle($name)) {
throw new InvalidArgumentException(sprintf('Undefined style: %s', $name));
}
return $this->styles[strtolower($name)];
}
/**
* {@inheritdoc}
*/
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 = $this->createStyleFromString($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, "\0")) {
return strtr($output, ["\0" => '\\', '\\<' => '<']);
}
return str_replace('\\<', '<', $output);
}
/**
* @return OutputFormatterStyleStack
*/
public function getStyleStack()
{
return $this->styleStack;
}
/**
* Tries to create new style instance from string.
*
* @return OutputFormatterStyle|false False if string is not format string
*/
private function createStyleFromString(string $string)
{
if (isset($this->styles[$string])) {
return $this->styles[$string];
}
if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, PREG_SET_ORDER)) {
return false;
}
$style = new OutputFormatterStyle();
foreach ($matches as $match) {
array_shift($match);
$match[0] = strtolower($match[0]);
if ('fg' == $match[0]) {
$style->setForeground(strtolower($match[1]));
} elseif ('bg' == $match[0]) {
$style->setBackground(strtolower($match[1]));
} elseif ('options' === $match[0]) {
preg_match_all('([^,;]+)', strtolower($match[1]), $options);
$options = array_shift($options);
foreach ($options as $option) {
$style->setOption($option);
}
} else {
return false;
}
}
return $style;
}
/**
* Applies current style from stack to text, if must be applied.
*/
private function applyCurrentStyle(string $text): string
{
return $this->isDecorated() && \strlen($text) > 0 ? $this->styleStack->getCurrent()->apply($text) : $text;
}
}