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- 06.01.2017
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Glob.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\Finder;
013
014 /**
015 * Glob matches globbing patterns against text.
016 *
017 * if match_glob("foo.*", "foo.bar") echo "matched\n";
018 *
019 * // prints foo.bar and foo.baz
020 * $regex = glob_to_regex("foo.*");
021 * for (array('foo.bar', 'foo.baz', 'foo', 'bar') as $t)
022 * {
023 * if (/$regex/) echo "matched: $car\n";
024 * }
025 *
026 * Glob implements glob(3) style matching that can be used to match
027 * against text, rather than fetching names from a filesystem.
028 *
029 * Based on the Perl Text::Glob module.
030 *
031 * @author Fabien Potencier <fabien@symfony.com> PHP port
032 * @author Richard Clamp <richardc@unixbeard.net> Perl version
033 * @copyright 2004-2005 Fabien Potencier <fabien@symfony.com>
034 * @copyright 2002 Richard Clamp <richardc@unixbeard.net>
035 */
036 class Glob
037 {
038 /**
039 * Returns a regexp which is the equivalent of the glob pattern.
040 *
041 * @param string $glob The glob pattern
042 * @param bool $strictLeadingDot
043 * @param bool $strictWildcardSlash
044 * @param string $delimiter Optional delimiter
045 *
046 * @return string regex The regexp
047 */
048 public static function toRegex($glob, $strictLeadingDot = true, $strictWildcardSlash = true, $delimiter = '#')
049 {
050 $firstByte = true;
051 $escaping = false;
052 $inCurlies = 0;
053 $regex = '';
054 $sizeGlob = strlen($glob);
055 for ($i = 0; $i < $sizeGlob; ++$i) {
056 $car = $glob[$i];
057 if ($firstByte) {
058 if ($strictLeadingDot && '.' !== $car) {
059 $regex .= '(?=[^\.])';
060 }
061
062 $firstByte = false;
063 }
064
065 if ('/' === $car) {
066 $firstByte = true;
067 }
068
069 if ($delimiter === $car || '.' === $car || '(' === $car || ')' === $car || '|' === $car || '+' === $car || '^' === $car || '$' === $car) {
070 $regex .= "\\$car";
071 } elseif ('*' === $car) {
072 $regex .= $escaping ? '\\*' : ($strictWildcardSlash ? '[^/]*' : '.*');
073 } elseif ('?' === $car) {
074 $regex .= $escaping ? '\\?' : ($strictWildcardSlash ? '[^/]' : '.');
075 } elseif ('{' === $car) {
076 $regex .= $escaping ? '\\{' : '(';
077 if (!$escaping) {
078 ++$inCurlies;
079 }
080 } elseif ('}' === $car && $inCurlies) {
081 $regex .= $escaping ? '}' : ')';
082 if (!$escaping) {
083 --$inCurlies;
084 }
085 } elseif (',' === $car && $inCurlies) {
086 $regex .= $escaping ? ',' : '|';
087 } elseif ('\\' === $car) {
088 if ($escaping) {
089 $regex .= '\\\\';
090 $escaping = false;
091 } else {
092 $escaping = true;
093 }
094
095 continue;
096 } else {
097 $regex .= $car;
098 }
099 $escaping = false;
100 }
101
102 return $delimiter.'^'.$regex.'$'.$delimiter;
103 }
104 }
105