+++ /dev/null
-<?php
-/**
- * A class for reading files
- *
- * @author Roland Haeder <webmaster@shipsimu.org>
- * @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 Core Developer Team
- * @license GNU GPL 3.0 or any newer version
- * @link http://www.shipsimu.org
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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 FrameworkFileInputPointer extends BaseFileIo implements InputPointer {
- /**
- * Protected constructor
- *
- * @return void
- */
- protected function __construct () {
- // Call parent constructor
- parent::__construct(__CLASS__);
- }
-
- /**
- * Create a file pointer based on the given file. The file will also
- * be verified here.
- *
- * @param $fileName The file name we shall pass to fopen()
- * @throws FileIsEmptyException If the provided file name is empty.
- * @throws FileIoException If fopen() returns not a file resource
- * @return void
- */
- public static final function createFrameworkFileInputPointer ($fileName) {
- // Some pre-sanity checks...
- if ((is_null($fileName)) || (empty($fileName))) {
- // No filename given
- throw new FileIsEmptyException(NULL, self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
- } elseif (!file_exists($fileName)) {
- // File does not exist!
- throw new FileIoException($fileName, self::EXCEPTION_FILE_NOT_FOUND);
- } elseif (!is_readable($fileName)) {
- // File does not exist!
- throw new FileReadProtectedException($fileName, self::EXCEPTION_FILE_CANNOT_BE_READ);
- }
-
- // Try to open a handler
- $filePointer = fopen($fileName, 'rb');
- if ((is_null($filePointer)) || ($filePointer === FALSE)) {
- // Something bad happend
- throw new FileIoException($fileName, self::EXCEPTION_FILE_POINTER_INVALID);
- } // END - if
-
- // Create new instance
- $pointerInstance = new FrameworkFileInputPointer();
-
- // Set file pointer and file name
- $pointerInstance->setPointer($filePointer);
- $pointerInstance->setFileName($fileName);
-
- // Return the instance
- return $pointerInstance;
- }
-
- /**
- * Read data a file pointer
- *
- * @return mixed The result of fread()
- * @throws NullPointerException If the file pointer instance
- * is not set by setPointer()
- * @throws InvalidResourceException If there is being set
- */
- public function readFromFile () {
- if (is_null($this->getPointer())) {
- // Pointer not initialized
- throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
- } elseif (!is_resource($this->getPointer())) {
- // Pointer is not a valid resource!
- throw new InvalidResourceException($this, self::EXCEPTION_INVALID_RESOURCE);
- }
-
- // Read data from the file pointer and return it
- return $this->read(1024);
- }
-
- /**
- * Reads given amount of bytes from file.
- *
- * @param $bytes Amount of bytes to read
- * @return $data Data read from file
- */
- public function read ($bytes) {
- // Try to read given characters
- $data = fread($this->getPointer(), $bytes);
-
- // Was this successfull?
- assert(is_string($data));
-
- // Then return it
- return $data;
- }
-
- /**
- * Analyzes entries in index file. This will count all found (and valid)
- * entries, mark invalid as damaged and count gaps ("fragmentation"). If
- * only gaps are found, the file is considered as "virgin" (no entries).
- *
- * @return void
- * @throws UnsupportedOperationException If this method is called
- */
- public function analyzeFile () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-
- /**
- * Advances to next "block" of bytes
- *
- * @return void
- * @throws UnsupportedOperationException If this method is called
- */
- public function next () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-
- /**
- * Checks wether the current entry is valid (not at the end of the file).
- * This method will return TRUE if an emptied (nulled) entry has been found.
- *
- * @return $isValid Whether the next entry is valid
- * @throws UnsupportedOperationException If this method is called
- */
- public function valid () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-
- /**
- * Gets current seek position ("key").
- *
- * @return $key Current key in iteration
- * @throws UnsupportedOperationException If this method is called
- */
- public function key () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-}
-
-// [EOF]
-?>
projects / core.git / blobdiff