* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class BaseFrameworkSystem extends stdClass implements FrameworkInterface {
+ /**
+ * Length of count
+ */
+ const LENGTH_COUNT = 20;
+
+ /**
+ * Length of position
+ */
+ const LENGTH_POSITION = 20;
+
/**
* The real class name
*/
private $sourceInstance = NULL;
/**
- * An instance of a InputStreamable class
+ * An instance of a InputStream class
*/
private $inputStreamInstance = NULL;
/**
- * An instance of a OutputStreamable class
+ * An instance of a OutputStream class
*/
private $outputStreamInstance = NULL;
*/
private $pointerInstance = NULL;
+ /**
+ * An instance of an index
+ */
+ private $indexInstance = NULL;
+
/**
* Thousands separator
*/
*/
private $genericArray = array();
+ /**
+ * Length of output from hash()
+ */
+ private static $hashLength = NULL;
+
+ /**
+ * Counter for total entries
+ */
+ private $totalEntries = 0;
+
+ /**
+ * Current seek position
+ */
+ private $seekPosition = 0;
+
+ /**
+ * Size of header
+ */
+ private $headerSize = 0;
+
+ /**
+ * File header
+ */
+ private $header = array();
+
+ /**
+ * Seek positions for gaps ("fragmentation")
+ */
+ private $gaps = array();
+
+ /**
+ * Seek positions for damaged entries (e.g. mismatching hash sum, ...)
+ */
+ private $damagedEntries = array();
+
/***********************
* Exception codes.... *
***********************/
$this->debugBackTrace(sprintf('Tried to set a missing field. name=%s, value[%s]=%s',
$name,
gettype($value),
- $value
+ print_r($value, TRUE)
));
}
}
/**
- * Getter for a InputStreamable instance
+ * Getter for a InputStream instance
*
- * @param $inputStreamInstance The InputStreamable instance
+ * @param $inputStreamInstance The InputStream instance
*/
protected final function getInputStreamInstance () {
return $this->inputStreamInstance;
}
/**
- * Setter for a InputStreamable instance
+ * Setter for a InputStream instance
*
- * @param $inputStreamInstance The InputStreamable instance
+ * @param $inputStreamInstance The InputStream instance
* @return void
*/
- protected final function setInputStreamInstance (InputStreamable $inputStreamInstance) {
+ protected final function setInputStreamInstance (InputStream $inputStreamInstance) {
$this->inputStreamInstance = $inputStreamInstance;
}
/**
- * Getter for a OutputStreamable instance
+ * Getter for a OutputStream instance
*
- * @param $outputStreamInstance The OutputStreamable instance
+ * @param $outputStreamInstance The OutputStream instance
*/
protected final function getOutputStreamInstance () {
return $this->outputStreamInstance;
}
/**
- * Setter for a OutputStreamable instance
+ * Setter for a OutputStream instance
*
- * @param $outputStreamInstance The OutputStreamable instance
+ * @param $outputStreamInstance The OutputStream instance
* @return void
*/
- protected final function setOutputStreamInstance (OutputStreamable $outputStreamInstance) {
+ protected final function setOutputStreamInstance (OutputStream $outputStreamInstance) {
$this->outputStreamInstance = $outputStreamInstance;
}
/**
* Setter for InputOutputPointer instance
*
- * @param $pointerInstance An instance of an InputOutputPointer
+ * @param $pointerInstance An instance of an InputOutputPointer class
* @return void
*/
protected final function setPointerInstance (InputOutputPointer $pointerInstance) {
/**
* Getter for InputOutputPointer instance
*
- * @return $pointerInstance An instance of an InputOutputPointer
+ * @return $pointerInstance An instance of an InputOutputPointer class
*/
public final function getPointerInstance () {
return $this->pointerInstance;
}
+ /**
+ * Setter for Indexable instance
+ *
+ * @param $indexInstance An instance of an Indexable class
+ * @return void
+ */
+ protected final function setIndexInstance (Indexable $indexInstance) {
+ $this->indexInstance = $indexInstance;
+ }
+
+ /**
+ * Getter for Indexable instance
+ *
+ * @return $indexInstance An instance of an Indexable class
+ */
+ public final function getIndexInstance () {
+ return $this->indexInstance;
+ }
+
/**
* Checks whether an object equals this object. You should overwrite this
* method to implement own equality checks
}
/**
- * Hashes a given string with a simple but stronger hash function (no salts)
+ * Hashes a given string with a simple but stronger hash function (no salt)
+ * and hex-encode it.
*
* @param $str The string to be hashed
* @return $hash The hash from string $str
*/
- public function hashString ($str) {
+ public static final function hash ($str) {
// Hash given string with (better secure) hasher
- $hash = mhash(MHASH_SHA256, $str);
+ $hash = bin2hex(mhash(MHASH_SHA256, $str));
// Return it
return $hash;
}
+ /**
+ * "Getter" for length of hash() output. This will be "cached" to speed up
+ * things.
+ *
+ * @return $length Length of hash() output
+ */
+ public static final function getHashLength () {
+ // Is it cashed?
+ if (is_null(self::$hashLength)) {
+ // No, then hash a string and save its length.
+ self::$hashLength = strlen(self::hash('abc123'));
+ } // END - if
+
+ // Return it
+ return self::$hashLength;
+ }
+
/**
* Checks whether the given number is really a number (only chars 0-9).
*
// ... and return it
return $translated;
}
+
+ /**
+ * Initializes counter for valid entries, arrays for damaged entries and
+ * an array for gap seek positions. If you call this method on your own,
+ * please re-analyze the file structure. So you are better to call
+ * analyzeFile() instead of this method.
+ *
+ * @return void
+ */
+ protected function initCountersGapsArray () {
+ // Init counter and seek position
+ $this->setCounter(0);
+ $this->setSeekPosition(0);
+
+ // Init arrays
+ $this->gaps = array();
+ $this->damagedEntries = array();
+ }
+
+ /**
+ * Getter for total entries
+ *
+ * @return $totalEntries Total entries in this file
+ */
+ protected final function getCounter () {
+ // Get it
+ return $this->totalEntries;
+ }
+
+ /**
+ * Setter for total entries
+ *
+ * @param $totalEntries Total entries in this file
+ * @return void
+ */
+ protected final function setCounter ($counter) {
+ // Set it
+ $this->totalEntries = $counter;
+ }
+
+ /**
+ * Increment counter
+ *
+ * @return void
+ */
+ protected final function incrementCounter () {
+ // Get it
+ $this->totalEntries++;
+ }
+
+ /**
+ * Getter for header size
+ *
+ * @return $totalEntries Size of file header
+ */
+ protected final function getHeaderSize () {
+ // Get it
+ return $this->headerSize;
+ }
+
+ /**
+ * Setter for header size
+ *
+ * @param $headerSize Size of file header
+ * @return void
+ */
+ protected final function setHeaderSize ($headerSize) {
+ // Set it
+ $this->headerSize = $headerSize;
+ }
+
+ /**
+ * Getter for header array
+ *
+ * @return $totalEntries Size of file header
+ */
+ protected final function getHeade () {
+ // Get it
+ return $this->header;
+ }
+
+ /**
+ * Setter for header
+ *
+ * @param $header Array for a file header
+ * @return void
+ */
+ protected final function setHeader (array $header) {
+ // Set it
+ $this->header = $header;
+ }
+
+ /**
+ * Getter for seek position
+ *
+ * @return $seekPosition Current seek position (stored here in object)
+ */
+ protected final function getSeekPosition () {
+ // Get it
+ return $this->seekPosition;
+ }
+
+ /**
+ * Setter for seek position
+ *
+ * @param $seekPosition Current seek position (stored here in object)
+ * @return void
+ */
+ protected final function setSeekPosition ($seekPosition) {
+ // And set it
+ $this->seekPosition = $seekPosition;
+ }
+
+ /**
+ * Updates seekPosition attribute from file to avoid to much access on file.
+ *
+ * @return void
+ */
+ protected function updateSeekPosition () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // Get key (= seek position)
+ $seekPosition = $this->getIteratorInstance()->key();
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] Setting seekPosition=%s', __METHOD__, __LINE__, $seekPosition));
+
+ // And set it here
+ $this->setSeekPosition($seekPosition);
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!', __METHOD__, __LINE__));
+ }
+
+ /**
+ * Checks whether the file header is initialized
+ *
+ * @return $isInitialized Whether the file header is initialized
+ */
+ protected function isFileHeaderInitialized () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // Is the method there?
+ assert(is_callable(array($this, 'readFileHeader')));
+
+ // Default is not initialized
+ $isInitialized = FALSE;
+
+ // Is the file initialized?
+ if ($this->isFileInitialized()) {
+ // Some bytes has been written, so rewind to start of it.
+ $rewindStatus = $this->getIteratorInstance()->rewind();
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] rewindStatus=%s', __METHOD__, __LINE__, $rewindStatus));
+
+ // Is the rewind() call successfull?
+ if ($rewindStatus != 1) {
+ // Something bad happened
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] Could not rewind().', __METHOD__, __LINE__));
+ } // END - if
+
+ // Read file header
+ $this->readFileHeader();
+
+ // The above method does already check the header
+ $isInitialized = TRUE;
+ } // END - if
+
+ // Return result
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] isInitialized=%d - EXIT!', __METHOD__, __LINE__, intval($isInitialized)));
+ return $isInitialized;
+ }
+
+ /**
+ * Checks whether the assigned file has been initialized
+ *
+ * @return $isInitialized Whether the file's size is zero
+ */
+ protected function isFileInitialized () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // Get it from iterator which holds the pointer instance. If FALSE is returned
+ $fileSize = $this->getIteratorInstance()->size();
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] fileSize=%s', __METHOD__, __LINE__, $fileSize));
+
+ /*
+ * The returned file size should not be FALSE or NULL as this means
+ * that the pointer class does not work correctly.
+ */
+ assert(is_int($fileSize));
+
+ // Is more than 0 returned?
+ $isInitialized = ($fileSize > 0);
+
+ // Return result
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] isInitialized=%d - EXIT!', __METHOD__, __LINE__, intval($isInitialized)));
+ return $isInitialized;
+ }
+
+ /**
+ * Creates the assigned file
+ *
+ * @return void
+ */
+ protected function createFileHeader () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // The method flushFileHeader() must be callable
+ assert(is_callable(array($this, 'flushFileHeader')));
+
+ // The file's header should not be initialized here
+ assert(!$this->isFileHeaderInitialized());
+
+ // Simple flush file header which will create it.
+ $this->flushFileHeader();
+
+ // Rewind seek position (to beginning of file) and update/flush file header
+ $this->rewineUpdateSeekPosition();
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!!', __METHOD__, __LINE__));
+ }
+
+ /**
+ * Seeks to beginning of file, updates seek position in this object and
+ * flushes the header.
+ *
+ * @return void
+ */
+ protected function rewineUpdateSeekPosition () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // Seek to beginning of file
+ $this->getIteratorInstance()->rewind();
+
+ // And update seek position ...
+ $this->updateSeekPosition();
+
+ // ... to write it back into the file
+ $this->flushFileHeader();
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!!', __METHOD__, __LINE__));
+ }
+
+ /**
+ * Seeks to old position
+ *
+ * @return void
+ */
+ protected function seekToOldPosition () {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // Seek to currently ("old") saved position
+ $this->getIteratorInstance()->seek($this->getSeekPosition());
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!!', __METHOD__, __LINE__));
+ }
+
+ /**
+ * Writes data at given position
+ *
+ * @param $seekPosition Seek position
+ * @param $data Data to be written
+ * @param $flushHeader Whether to flush the header (default: flush)
+ * @return void
+ */
+ protected function writeData ($seekPosition, $data, $flushHeader = TRUE) {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] seekPosition=%s,data()=%s - CALLED!', __METHOD__, __LINE__, $seekPosition, strlen($data)));
+
+ // Write data at given position
+ $this->getIteratorInstance()->writeAtPosition($seekPosition, $data);
+
+ // Update seek position
+ $this->updateSeekPosition();
+
+ // Flush the header?
+ if ($flushHeader === TRUE) {
+ // Flush header
+ $this->flushFileHeader();
+
+ // Seek to old position
+ $this->seekToOldPosition();
+ } // END - if
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!', __METHOD__, __LINE__));
+ }
+
+ /**
+ * Pre-allocates file (if enabled) with some space for later faster write access.
+ *
+ * @param $type Type of the file
+ * @return void
+ */
+ protected function preAllocateFile ($type) {
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] CALLED!', __METHOD__, __LINE__));
+
+ // caluclateMinimumFileEntryLength() must be callable
+ assert(is_callable(array($this, 'caluclateMinimumFileEntryLength')));
+
+ // Is it enabled?
+ if ($this->getConfigInstance()->getConfigEntry($type . '_pre_allocate_enabled') != 'Y') {
+ // Not enabled
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] Not pre-allocating file.', __METHOD__, __LINE__));
+
+ // Don't continue here.
+ return;
+ } // END - if
+
+ // Message to user
+ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] Pre-allocating file ...', __METHOD__, __LINE__));
+
+ // Calculate minimum length for one entry
+ $minLengthEntry = $this->caluclateMinimumFileEntryLength();
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] minLengthEntry=%s', __METHOD__, __LINE__, $minLengthEntry));
+
+ // Calulcate seek position
+ $seekPosition = $minLengthEntry * $this->getConfigInstance()->getConfigEntry($type . '_pre_allocate_count');
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] seekPosition=%s', __METHOD__, __LINE__, $seekPosition));
+
+ // Now simply write a NUL there. This will pre-allocate the file.
+ $this->writeData($seekPosition, chr(0));
+
+ // Rewind seek position (to beginning of file) and update/flush file header
+ $this->rewineUpdateSeekPosition();
+
+ /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput(sprintf('[%s:%d:] EXIT!', __METHOD__, __LINE__));
+ }
}
// [EOF]
projects / core.git / blobdiff