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Diffstat (limited to 'buildscripts/phing/classes/phing/types/selectors/SelectorUtils.php')
| -rw-r--r-- | buildscripts/phing/classes/phing/types/selectors/SelectorUtils.php | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/buildscripts/phing/classes/phing/types/selectors/SelectorUtils.php b/buildscripts/phing/classes/phing/types/selectors/SelectorUtils.php new file mode 100644 index 00000000..2d7e5068 --- /dev/null +++ b/buildscripts/phing/classes/phing/types/selectors/SelectorUtils.php @@ -0,0 +1,200 @@ +<?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; + } + +} + |