<?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\Finder\Expression;
/**
* @author Jean-François Simon <contact@jfsimon.fr>
*/
class Glob implements ValueInterface
{
/**
* @var string
*/
private $pattern;
/**
* @param string $pattern
*/
public function __construct($pattern)
{
$this->pattern = $pattern;
}
/**
* {@inheritdoc}
*/
public function render()
{
return $this->pattern;
}
/**
* {@inheritdoc}
*/
public function renderPattern()
{
return $this->pattern;
}
/**
* {@inheritdoc}
*/
public function getType()
{
return Expression::TYPE_GLOB;
}
/**
* {@inheritdoc}
*/
public function isCaseSensitive()
{
return true;
}
/**
* {@inheritdoc}
*/
public function prepend($expr)
{
$this->pattern = $expr.$this->pattern;
return $this;
}
/**
* {@inheritdoc}
*/
public function append($expr)
{
$this->pattern .= $expr;
return $this;
}
/**
* Tests if glob is expandable ("*.{a,b}" syntax).
*
* @return bool
*/
public function isExpandable()
{
return false !== strpos($this->pattern, '{')
&& false !== strpos($this->pattern, '}');
}
/**
* @param bool $strictLeadingDot
* @param bool $strictWildcardSlash
*
* @return Regex
*/
public function toRegex($strictLeadingDot = true, $strictWildcardSlash = true)
{
$firstByte = true;
$escaping = false;
$inCurlies = 0;
$regex = '';
$sizeGlob = strlen($this->pattern);
for ($i = 0; $i < $sizeGlob; $i++) {
$car = $this->pattern[$i];
if ($firstByte) {
if ($strictLeadingDot && '.' !== $car) {
$regex .= '(?=[^\.])';
}
$firstByte = false;
}
if ('/' === $car) {
$firstByte = true;
}
if ('.' === $car || '(' === $car || ')' === $car || '|' === $car || '+' === $car || '^' === $car || '$' === $car) {
$regex .= "\\$car";
} elseif ('*' === $car) {
$regex .= $escaping ? '\\*' : ($strictWildcardSlash ? '[^/]*' : '.*');
} elseif ('?' === $car) {
$regex .= $escaping ? '\\?' : ($strictWildcardSlash ? '[^/]' : '.');
} elseif ('{' === $car) {
$regex .= $escaping ? '\\{' : '(';
if (!$escaping) {
++$inCurlies;
}
} elseif ('}' === $car && $inCurlies) {
$regex .= $escaping ? '}' : ')';
if (!$escaping) {
--$inCurlies;
}
} elseif (',' === $car && $inCurlies) {
$regex .= $escaping ? ',' : '|';
} elseif ('\\' === $car) {
if ($escaping) {
$regex .= '\\\\';
$escaping = false;
} else {
$escaping = true;
}
continue;
} else {
$regex .= $car;
}
$escaping = false;
}
return new Regex('^'.$regex.'$');
}
}
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