namespace Org\Mxchange\CoreFramework\Iterator\File;
// Import framework stuff
-use Org\Mxchange\CoreFramework\Filesystem\Block;
+use Org\Mxchange\CoreFramework\Filesystem\File\BinaryFile;
+use Org\Mxchange\CoreFramework\Generic\FrameworkInterface;
use Org\Mxchange\CoreFramework\Iterator\BaseIterator;
-use Org\Mxchange\CoreFramework\Iterator\Filesystem\SeekableWritableFileIterator;
+use Org\Mxchange\CoreFramework\Traits\File\BinaryFileTrait;
+
+// Import SPL stuff
+use \BadMethodCallException;
+use \InvalidArgumentException;
+use \OutOfBoundsException;
+use \SeekableIterator;
/**
* A file iterator
*
* @author Roland Haeder <webmaster@ship-simu.org>
* @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core Developer Team
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2023 Core Developer Team
* @license GNU GPL 3.0 or any newer version
* @link http://www.ship-simu.org
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-class FileIterator extends BaseIterator implements SeekableWritableFileIterator {
+class FileIterator extends BaseIterator implements SeekableIterator {
+ // Load traits
+ use BinaryFileTrait;
+
/**
* Protected constructor
*
* @return void
*/
- protected function __construct () {
+ private function __construct () {
// Call parent constructor
parent::__construct(__CLASS__);
}
/**
* Creates an instance of this class
*
- * @param $pointerInstance An instance of a Block class
+ * @param $binaryFileInstance An instance of a BinaryFile class
* @return $iteratorInstance An instance of a Iterator class
*/
- public final static function createFileIterator (Block $blockInstance) {
+ public final static function createFileIterator (BinaryFile $binaryFileInstance) {
// Get new instance
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: binaryFileInstance=%s - CALLED!', $binaryFileInstance->__toString()));
$iteratorInstance = new FileIterator();
// Set the instance here
- /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d] Setting blockInstance=%s ...', __METHOD__, __LINE__, $blockInstance->__toString()));
- $iteratorInstance->setBlockInstance($blockInstance);
+ $iteratorInstance->setBinaryFileInstance($binaryFileInstance);
// Return the prepared instance
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: iteratorInstance=%s - EXIT!', $iteratorInstance->__toString()));
return $iteratorInstance;
}
* Gets currently read data
*
* @return $current Currently read data
+ * @throws BadMethodCallException If valid() is FALSE
*/
public function current () {
- // Call block instance
- return $this->getBlockInstance()->current();
+ // Is condition given?
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: CALLED!');
+ if (!$this->valid()) {
+ // Throw BMCE
+ throw new BadMethodCallException('Current key cannot be valid, forgot to invoke valid()?', FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
+ }
+
+ // Call file instance
+ $current = $this->getBinaryFileInstance()->current();
+
+ // Return it
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: current[]=%s - EXIT!', gettype($current)));
+ return $current;
}
/**
* Gets current seek position ("key").
*
* @return $key Current key in iteration
+ * @throws BadMethodCallException If valid() is FALSE
*/
public function key () {
- // Return it
- return $this->getBlockInstance()->determineSeekPosition();
+ // Is condition given?
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: CALLED!');
+ if (!$this->valid()) {
+ // Throw BMCE
+ throw new BadMethodCallException('Current key cannot be valid, forgot to invoke valid()?', FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
+ }
+
+ // Get key from file instance
+ $key = $this->getBinaryFileInstance()->determineSeekPosition();
+
+ // Return key
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: key[%s]=%s - EXIT!', gettype($key), $key));
+ return $key;
}
/**
- * Advances to next "block" of bytes
+ * Advances to next "file" of bytes
*
* @return void
*/
public function next () {
- // Call block instance
- $this->getBlockInstance()->next();
+ // Call file instance
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: CALLED!');
+ $this->getBinaryFileInstance()->next();
+
+ // Trace message
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: EXIT!');
}
/**
* @return $status Status of this operation
*/
public function rewind () {
- // Call block instance
- return $this->getBlockInstance()->rewind();
+ // Call file instance
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: CALLED!');
+ $this->getBinaryFileInstance()->rewind();
+
+ // Trace message
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: EXIT!');
}
/**
* @return $isValid Whether the next entry is valid
*/
public function valid () {
- // Call block instance
- return $this->getBlockInstance()->valid();
+ // Call file instance
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: CALLED!');
+ $isValid = $this->getBinaryFileInstance()->valid();
+
+ // Return flag
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: isValid=%d - EXIT!', intval($isValid)));
+ return $isValid;
}
/**
* Seeks to given position
*
* @param $seekPosition Seek position in file
- * @return $status Status of this operation
- */
- public function seek ($seekPosition) {
- // Call block instance
- return $this->getBlockInstance()->seek($seekPosition);
- }
-
- /**
- * Size of file stack
- *
- * @return $size Size (in bytes) of file
- */
- public function size () {
- // Call the block object
- $size = $this->getBlockInstance()->size();
-
- // Return result
- return $size;
- }
-
- /**
- * Reads given amount of bytes from file.
- *
- * @param $bytes Amount of bytes to read
- * @return $data Data read from file
- */
- public function read ($bytes = NULL) {
- // Call block instance
- return $this->getBlockInstance()->read($bytes);
- }
-
- /**
- * Analyzes entries in index file. This will count all found (and valid)
- * entries, mark invalid as damaged and count gaps ("fragmentation"). If
- * only gaps are found, the file is considered as "virgin" (no entries).
- *
- * @return void
- */
- public function analyzeFile () {
- // Just call the block instance
- $this->getBlockInstance()->analyzeFile();
- }
-
- /**
- * Checks whether the file header is initialized
- *
- * @return $isInitialized Whether the file header is initialized
- */
- public function isFileHeaderInitialized () {
- // Just call the block instance
- return $this->getBlockInstance()->isFileHeaderInitialized();
- }
-
- /**
- * Creates the assigned file
- *
- * @return void
- */
- public function createFileHeader () {
- // Just call the block instance
- $this->getBlockInstance()->createFileHeader();
- }
-
- /**
- * Pre-allocates file (if enabled) with some space for later faster write access.
- *
- * @param $type Type of the file
- * @return void
- */
- public function preAllocateFile ($type) {
- // Just call the block instance
- $this->getBlockInstance()->preAllocateFile($type);
- }
-
- /**
- * 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
- */
- public function initCountersGapsArray () {
- // Call block instance
- $this->getBlockInstance()->initCountersGapsArray();
- }
-
- /**
- * Getter for header size
- *
- * @return $totalEntries Size of file header
- */
- public final function getHeaderSize () {
- // Call block instance
- return $this->getBlockInstance()->getHeaderSize();
- }
-
- /**
- * Setter for header size
- *
- * @param $headerSize Size of file header
- * @return void
- */
- public final function setHeaderSize ($headerSize) {
- // Call block instance
- $this->getBlockInstance()->setHeaderSize($headerSize);
- }
-
- /**
- * Getter for header array
- *
- * @return $totalEntries Size of file header
- */
- public final function getHeader () {
- // Call block instance
- return $this->getBlockInstance()->getHeader();
- }
-
- /**
- * Setter for header
- *
- * @param $header Array for a file header
- * @return void
- */
- public final function setHeader (array $header) {
- // Call block instance
- $this->getBlockInstance()->setHeader($header);
- }
-
- /**
- * Updates seekPosition attribute from file to avoid to much access on file.
- *
- * @return void
- */
- public function updateSeekPosition () {
- // Call block instance
- $this->getBlockInstance()->updateSeekPosition();
- }
-
- /**
- * Getter for total entries
- *
- * @return $totalEntries Total entries in this file
- */
- public final function getCounter () {
- // Call block instance
- return $this->getBlockInstance()->getCounter();
- }
-
- /**
- * "Getter" for file size
- *
- * @return $fileSize Size of currently loaded file
- */
- public function getFileSize () {
- // Call block instance
- return $this->getBlockInstance()->getFileSize();
- }
-
- /**
- * Writes data at given position
- *
- * @param $seekPosition Seek position
- * @param $data Data to be written
- * @param $flushHeader Whether to flush the header (default: flush)
* @return void
+ * @throws OutOfBoundsException If the position is not seekable
*/
- public function writeData ($seekPosition, $data, $flushHeader = true) {
- // Call block instance
- $this->getBlockInstance()->writeData($seekPosition, $data, $flushHeader);
- }
-
- /**
- * Getter for seek position
- *
- * @return $seekPosition Current seek position (stored here in object)
- */
- public function getSeekPosition () {
- // Call block instance
- return $this->getBlockInstance()->getSeekPosition();
- }
-
- /**
- * Writes given value to the file and returns a hash and gap position for it
- *
- * @param $groupId Group identifier
- * @param $value Value to be added to the stack
- * @return $data Hash and gap position
- */
- public function writeValueToFile ($groupId, $value) {
- // Call block instance
- return $this->getBlockInstance()->writeValueToFile($groupId, $value);
- }
+ public function seek (int $seekPosition) {
+ // Validate parameter
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('FILE-ITERATOR: seekPosition=%d,whence=%d - CALLED!', $seekPosition, $whence));
+ if ($seekPosition < 0) {
+ // Throw IAE
+ throw new OutOfBoundsException(sprintf('seekPosition=%d is not valid', $seekPosition));
+ }
- /**
- * Writes given raw data to the file and returns a gap position and length
- *
- * @param $groupId Group identifier
- * @param $hash Hash from encoded value
- * @param $encoded Encoded value to be written to the file
- * @return $data Gap position and length of the raw data
- */
- public function writeDataToFreeGap ($groupId, $hash, $encoded) {
- // Call block instance
- return $this->getBlockInstance()->writeDataToFreeGap($groupId, $hash, $encoded);
- }
+ // Call file instance
+ $this->getBinaryFileInstance()->seek($seekPosition);
- /**
- * Searches for next suitable gap the given length of data can fit in
- * including padding bytes.
- *
- * @param $length Length of raw data
- * @return $seekPosition Found next gap's seek position
- */
- public function searchNextGap ($length) {
- // Call block instance
- print $this->getBlockInstance()->__toString() . PHP_EOL;
- return $this->getBlockInstance()->searchNextGap($length);
+ // Trace message
+ //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('FILE-ITERATOR: EXIT!');
}
}
projects / core.git / blobdiff