*/
class t3lib_cache_backend_FileBackend extends t3lib_cache_backend_AbstractBackend {
- const SEPARATOR = '-';
+ const SEPARATOR = '^';
- const FILENAME_EXPIRYTIME_FORMAT = 'YmdHis';
- const FILENAME_EXPIRYTIME_GLOB = '??????????????';
- const FILENAME_EXPIRYTIME_UNLIMITED = '99991231235959';
+ const EXPIRYTIME_FORMAT = 'YmdHis';
+ const EXPIRYTIME_LENGTH = 14;
/**
* @var string Directory where the files are stored
*/
protected $cacheDirectory = '';
+ protected $root = '/';
+
/**
* Constructs this backend
*
*/
public function __construct(array $options = array()) {
parent::__construct($options);
-
+ if (TYPO3_OS === 'WIN') {
+ $this->root = '';
+ }
if (empty($this->cacheDirectory)) {
$cacheDirectory = 'typo3temp/cache/';
try {
);
}
- if ($lifetime === 0 || ($lifetime === NULL && $this->defaultLifetime === 0)) {
- $expiryTime = new DateTime('9999-12-31T23:59:59+0000', new DateTimeZone('UTC'));
- } else {
- if ($lifetime === NULL) {
- $lifetime = $this->defaultLifetime;
- }
- $expiryTime = new DateTime('now +' . $lifetime . ' seconds', new DateTimeZone('UTC'));
- }
-
+ $expirytime = $this->calculateExpiryTime($lifetime);
$cacheEntryPath = $this->renderCacheEntryPath($entryIdentifier);
- $filename = $this->renderCacheFilename($entryIdentifier, $expiryTime);
if (!is_writable($cacheEntryPath)) {
try {
t3lib_div::mkdir_deep(
- '/',
+ $this->root,
$cacheEntryPath
);
} catch(Exception $exception) {
$this->remove($entryIdentifier);
- $temporaryFilename = $filename . '.' . uniqid() . '.temp';
+ $data = $expirytime->format(self::EXPIRYTIME_FORMAT) . $data;
+ $temporaryFilename = uniqid() . '.temp';
$result = file_put_contents($cacheEntryPath . $temporaryFilename, $data);
if ($result === FALSE) {
throw new t3lib_cache_Exception(
}
for ($i = 0; $i < 5; $i++) {
- $result = rename(
- $cacheEntryPath . $temporaryFilename,
- $cacheEntryPath . $filename
- );
-
+ $result = rename($cacheEntryPath . $temporaryFilename, $cacheEntryPath . $entryIdentifier);
if ($result === TRUE) {
break;
}
if ($result === FALSE) {
throw new t3lib_cache_Exception(
- 'The cache file "' . $filename . '" could not be written.',
+ 'The cache file "' . $entryIdentifier . '" could not be written.',
1222361632
);
}
if (!is_writable($tagPath)) {
t3lib_div::mkdir_deep(
- '/',
+ $this->root,
$tagPath
);
+ if (!is_writable($tagPath)) {
+ throw new t3lib_cache_Exception(
+ 'The tag directory "' . $tagPath . '" could not be created.',
+ 1238242144
+ );
+ }
}
touch($tagPath
* @author Karsten Dambekalns <karsten@typo3.org>
*/
public function get($entryIdentifier) {
- $pathsAndFilenames = $this->findCacheFilesByIdentifier($entryIdentifier);
-
- if ($pathsAndFilenames === FALSE) {
- return FALSE;
- }
- $pathAndFilename = array_pop($pathsAndFilenames);
-
- return ($this->isCacheFileExpired($pathAndFilename)) ? FALSE : file_get_contents($pathAndFilename);
+ $pathAndFilename = $this->renderCacheEntryPath($entryIdentifier) . $entryIdentifier;
+ return ($this->isCacheFileExpired($pathAndFilename)) ? FALSE : file_get_contents($pathAndFilename, NULL, NULL, self::EXPIRYTIME_LENGTH);
}
/**
* @param string $entryIdentifier
* @return boolean TRUE if such an entry exists, FALSE if not
* @author Robert Lemke <robert@typo3.org>
- * @author Karsten Dambekalns <karsten@typo3.org>
*/
public function has($entryIdentifier) {
- $pathsAndFilenames = $this->findCacheFilesByIdentifier($entryIdentifier);
-
- if ($pathsAndFilenames === FALSE) return FALSE;
-
- return !$this->isCacheFileExpired(array_pop($pathsAndFilenames));
+ return !$this->isCacheFileExpired($this->renderCacheEntryPath($entryIdentifier) . $entryIdentifier);
}
/**
* @author Robert Lemke <robert@typo3.org>
*/
public function remove($entryIdentifier) {
- $pathsAndFilenames = $this->findCacheFilesByIdentifier($entryIdentifier);
+ $pathAndFilename = $this->renderCacheEntryPath($entryIdentifier) . $entryIdentifier;
- if ($pathsAndFilenames === FALSE) {
+ if (!file_exists($pathAndFilename)) {
return FALSE;
}
- foreach ($pathsAndFilenames as $pathAndFilename) {
- $result = unlink($pathAndFilename);
- if ($result === FALSE) {
- return FALSE;
- }
- }
-
- $pathsAndFilenames = $this->findTagFilesByEntry($entryIdentifier);
- if ($pathsAndFilenames === FALSE) {
+ if (unlink ($pathAndFilename) === FALSE) {
return FALSE;
}
- foreach ($pathsAndFilenames as $pathAndFilename) {
- $result = unlink($pathAndFilename);
- if ($result === FALSE) {
+ foreach($this->findTagFilesByEntry($entryIdentifier) as $pathAndFilename) {
+ if (!file_exists($pathAndFilename)) {
+ return FALSE;
+ }
+
+ if (unlink ($pathAndFilename) === FALSE) {
return FALSE;
}
}
* @author Robert Lemke <robert@typo3.org>
*/
protected function isCacheFileExpired($cacheFilename) {
- list($timestamp) = explode(self::SEPARATOR, basename($cacheFilename), 2);
- return $timestamp < gmdate('YmdHis');
+ $timestamp = (file_exists($cacheFilename)) ? file_get_contents($cacheFilename, NULL, NULL, 0, self::EXPIRYTIME_LENGTH) : 1;
+ return $timestamp < gmdate(self::EXPIRYTIME_FORMAT);
}
/**
- * Does garbage collection for the given entry or all entries.
+ * Does garbage collection
*
* @return void
* @author Karsten Dambekalns <karsten@typo3.org>
$pattern = $this->cacheDirectory . 'data/' . $this->cache->getIdentifier() . '/*/*/*';
$filesFound = glob($pattern);
- foreach ($filesFound as $cacheFile) {
- $splitFilename = explode(self::SEPARATOR, basename($cacheFile), 2);
- if ($splitFilename[0] < gmdate('YmdHis')) {
- $this->remove($splitFilename[1]);
- }
- }
- }
-
- /**
- * Renders a file name for the specified cache entry
- *
- * @param string Identifier for the cache entry
- * @param DateTime Date and time specifying the expiration of the entry. Must be a UTC time.
- * @return string Filename of the cache data file
- * @author Robert Lemke <robert@typo3.org>
- */
- protected function renderCacheFilename($identifier, DateTime $expiryTime) {
- $filename = $expiryTime->format(self::FILENAME_EXPIRYTIME_FORMAT) . self::SEPARATOR . $identifier;
-
- return $filename;
+ foreach ($filesFound as $cacheFilename) {
+ if ($this->isCacheFileExpired($cacheFilename)) {
+ $this->remove(basename($cacheFilename));
+ }
+ }
}
/**
* @param string $identifier Identifier for the cache entry
* @return string Absolute path leading to the directory containing the cache entry
* @author Robert Lemke <robert@typo3.org>
+ * @internal
*/
protected function renderCacheEntryPath($identifier) {
$identifierHash = sha1($identifier);
* @return mixed The file names (including path) as an array if one or more entries could be found, otherwise FALSE
* @author Robert Lemke <robert@typo3.org>
* @throws t3lib_cache_Exception if no frontend has been set
+ * @internal
*/
protected function findCacheFilesByIdentifier($entryIdentifier) {
if (!$this->cache instanceof t3lib_cache_frontend_Frontend) {
);
}
- $pattern = $this->renderCacheEntryPath($entryIdentifier) . self::FILENAME_EXPIRYTIME_GLOB . self::SEPARATOR . $entryIdentifier;
+ $pattern = $this->renderCacheEntryPath($entryIdentifier) . $entryIdentifier;
$filesFound = glob($pattern);
+ if ($filesFound === FALSE || count($filesFound) === 0) {
+ return FALSE;
+ }
return $filesFound;
}
* Tries to find the tag entries for the specified cache entry.
*
* @param string The cache entry identifier to find tag files for
- * @return mixed The file names (including path) as an array if one or more entries could be found, otherwise FALSE
+ * @return array The file names (including path)
* @author Robert Lemke <robert@typo3.org>
* @throws t3lib_cache_Exception if no frontend has been set
+ * @internal
*/
protected function findTagFilesByEntry($entryIdentifier) {
if (!$this->cache instanceof t3lib_cache_frontend_Frontend) {
);
}
- $path = $this->cacheDirectory . 'tags/';
- $pattern = $path . '*/' . $this->cache->getIdentifier() . self::SEPARATOR . $entryIdentifier;
- $filesFound = glob($pattern);
-
- if ($filesFound === FALSE || count($filesFound) === 0) {
- return FALSE;
- }
-
- return $filesFound;
+ $path = $this->cacheDirectory . 'tags/';
+ $pattern = $path . '*/' . $this->cache->getIdentifier() . self::SEPARATOR . $entryIdentifier;
+ return glob($pattern);
}
}
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