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<?php
/*
* $Id: 4a682bbe8751f6e09a725af7cfdf2bd17ab00645 $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
include_once 'phing/util/StringHelper.php';
/**
* <p>This is a utility class used by selectors and DirectoryScanner. The
* functionality more properly belongs just to selectors, but unfortunately
* DirectoryScanner exposed these as protected methods. Thus we have to
* support any subclasses of DirectoryScanner that may access these methods.
* </p>
* <p>This is a Singleton.</p>
*
* @author Hans Lellelid, hans@xmpl.org (Phing)
* @author Arnout J. Kuiper, ajkuiper@wxs.nl (Ant)
* @author Magesh Umasankar
* @author Bruce Atherton, bruce@callenish.com (Ant)
* @package phing.types.selectors
*/
class SelectorUtils {
private static $instance;
/**
* Retrieves the instance of the Singleton.
*/
public static function getInstance() {
if (!isset(self::$instance)) {
self::$instance = new SelectorUtils();
}
return self::$instance;
}
/**
* Tests whether or not a given path matches the start of a given
* pattern up to the first "**".
* <p>
* This is not a general purpose test and should only be used if you
* can live with false positives. For example, <code>pattern=**\a</code>
* and <code>str=b</code> will yield <code>true</code>.
*
* @param pattern The pattern to match against. Must not be
* <code>null</code>.
* @param str The path to match, as a String. Must not be
* <code>null</code>.
* @param isCaseSensitive Whether or not matching should be performed
* case sensitively.
*
* @return whether or not a given path matches the start of a given
* pattern up to the first "**".
*/
public static function matchPatternStart($pattern, $str, $isCaseSensitive = true) {
// When str starts with a DIRECTORY_SEPARATOR, pattern has to start with a
// DIRECTORY_SEPARATOR.
// When pattern starts with a DIRECTORY_SEPARATOR, str has to start with a
// DIRECTORY_SEPARATOR.
if (StringHelper::startsWith(DIRECTORY_SEPARATOR, $str) !==
StringHelper::startsWith(DIRECTORY_SEPARATOR, $pattern)) {
return false;
}
$patDirs = explode(DIRECTORY_SEPARATOR, $pattern);
$strDirs = explode(DIRECTORY_SEPARATOR, $str);
$patIdxStart = 0;
$patIdxEnd = count($patDirs)-1;
$strIdxStart = 0;
$strIdxEnd = count($strDirs)-1;
// up to first '**'
while ($patIdxStart <= $patIdxEnd && $strIdxStart <= $strIdxEnd) {
$patDir = $patDirs[$patIdxStart];
if ($patDir == "**") {
break;
}
if (!self::match($patDir, $strDirs[$strIdxStart], $isCaseSensitive)) {
return false;
}
$patIdxStart++;
$strIdxStart++;
}
if ($strIdxStart > $strIdxEnd) {
// String is exhausted
return true;
} elseif ($patIdxStart > $patIdxEnd) {
// String not exhausted, but pattern is. Failure.
return false;
} else {
// pattern now holds ** while string is not exhausted
// this will generate false positives but we can live with that.
return true;
}
}
/**
* Tests whether or not a given path matches a given pattern.
*
* @param pattern The pattern to match against. Must not be
* <code>null</code>.
* @param str The path to match, as a String. Must not be
* <code>null</code>.
* @param isCaseSensitive Whether or not matching should be performed
* case sensitively.
*
* @return <code>true</code> if the pattern matches against the string,
* or <code>false</code> otherwise.
*/
public static function matchPath($pattern, $str, $isCaseSensitive = true) {
$rePattern = preg_quote($pattern, '/');
$dirSep = preg_quote(DIRECTORY_SEPARATOR, '/');
$trailingDirSep = '(('.$dirSep.')?|('.$dirSep.').+)';
$patternReplacements = array(
$dirSep.'\*\*'.$dirSep => $dirSep.'.*'.$trailingDirSep,
$dirSep.'\*\*' => $trailingDirSep,
'\*\*'.$dirSep => '.*'.$trailingDirSep,
'\*\*' => '.*',
'\*' => '[^'.$dirSep.']*',
'\?' => '[^'.$dirSep.']'
);
$rePattern = str_replace(array_keys($patternReplacements), array_values($patternReplacements), $rePattern);
$rePattern = '/^'.$rePattern.'$/'.($isCaseSensitive ? '' : 'i');
return (bool) preg_match($rePattern, $str);
}
/**
* Tests whether or not a string matches against a pattern.
* The pattern may contain two special characters:<br>
* '*' means zero or more characters<br>
* '?' means one and only one character
*
* @param pattern The pattern to match against.
* Must not be <code>null</code>.
* @param str The string which must be matched against the pattern.
* Must not be <code>null</code>.
* @param isCaseSensitive Whether or not matching should be performed
* case sensitively.
*
*
* @return <code>true</code> if the string matches against the pattern,
* or <code>false</code> otherwise.
*/
public static function match($pattern, $str, $isCaseSensitive = true) {
$rePattern = preg_quote($pattern, '/');
$rePattern = str_replace(array("\*", "\?"), array('.*', '.'), $rePattern);
$rePattern = '/^'.$rePattern.'$/'.($isCaseSensitive ? '' : 'i');
return (bool) preg_match($rePattern, $str);
}
/**
* Returns dependency information on these two files. If src has been
* modified later than target, it returns true. If target doesn't exist,
* it likewise returns true. Otherwise, target is newer than src and
* is not out of date, thus the method returns false. It also returns
* false if the src file doesn't even exist, since how could the
* target then be out of date.
*
* @param PhingFile $src the original file
* @param PhingFile $target the file being compared against
* @param int $granularity the amount in seconds of slack we will give in
* determining out of dateness
* @return whether the target is out of date
*/
public static function isOutOfDate(PhingFile $src, PhingFile $target, $granularity) {
if (!$src->exists()) {
return false;
}
if (!$target->exists()) {
return true;
}
if (($src->lastModified() - $granularity) > $target->lastModified()) {
return true;
}
return false;
}
}
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