Also getSeekPosition() belongs here ... + TODOs.txt updated (--amend rocks!)

[core.git] / inc / classes / interfaces / iterator / class_SeekableWritableFileIterator.php

diff --git a/inc/classes/interfaces/iterator/class_SeekableWritableFileIterator.php b/inc/classes/interfaces/iterator/class_SeekableWritableFileIterator.php
index 1dde2c27235b52e32bc25e46cbefa1959e56d10d..d5f7c19252de07bbe8764cda26b200114dab4019 100644 (file)
--- a/inc/classes/interfaces/iterator/class_SeekableWritableFileIterator.php
+++ b/inc/classes/interfaces/iterator/class_SeekableWritableFileIterator.php
@@ -39,13 +39,121 @@ interface SeekableWritableFileIterator extends SeekableIterator {
        function size ();
 
        /**
-        * Writes at given position by seeking to it.
+        * Reads given amount of bytes from file.
         *
-        * @param       $seekPosition   Seek position in file
+        * @param       $bytes  Amount of bytes to read
+        * @return      $data   Data read from file
+        */
+       function read ($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
+        */
+       function analyzeFile ();
+
+       /**
+        * Checks whether the file header is initialized
+        *
+        * @return      $isInitialized  Whether the file header is initialized
+        */
+       function isFileHeaderInitialized ();
+
+       /**
+        * Creates the assigned file
+        *
+        * @return      void
+        */
+       function createFileHeader ();
+
+       /**
+        * Pre-allocates file (if enabled) with some space for later faster write access.
+        *
+        * @param       $type   Type of the file
+        * @return      void
+        */
+       function preAllocateFile ($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
+        */
+       function initCountersGapsArray ();
+
+       /**
+        * Getter for header size
+        *
+        * @return      $totalEntries   Size of file header
+        */
+       function getHeaderSize ();
+
+       /**
+        * Setter for header size
+        *
+        * @param       $headerSize             Size of file header
+        * @return      void
+        */
+       function setHeaderSize ($headerSize);
+
+       /**
+        * Getter for header array
+        *
+        * @return      $totalEntries   Size of file header
+        */
+       function getHeader ();
+
+       /**
+        * Setter for header
+        *
+        * @param       $header         Array for a file header
+        * @return      void
+        */
+       function setHeader (array $header);
+
+       /**
+        * Updates seekPosition attribute from file to avoid to much access on file.
+        *
+        * @return      void
+        */
+       function updateSeekPosition ();
+
+       /**
+        * Getter for total entries
+        *
+        * @return      $totalEntries   Total entries in this file
+        */
+       function getCounter ();
+
+       /**
+        * "Getter" for file size
+        *
+        * @return      $fileSize       Size of currently loaded file
+        */
+       function getFileSize ();
+
+       /**
+        * Writes data at given position
+        *
+        * @param       $seekPosition   Seek position
         * @param       $data                   Data to be written
+        * @param       $flushHeader    Whether to flush the header (default: flush)
         * @return      void
         */
-       function writeAtPosition ($seedPosition, $data);
+       function writeData ($seekPosition, $data, $flushHeader = TRUE);
+
+       /**
+        * Getter for seek position
+        *
+        * @return      $seekPosition   Current seek position (stored here in object)
+        */
+       function getSeekPosition ();
 }
 
 // [EOF]