X-Git-Url: https://git.mxchange.org/?p=core.git;a=blobdiff_plain;f=inc%2Fclasses%2Finterfaces%2Fio%2Fpointer%2Fio%2Fclass_InputOutputPointer.php;h=0cb98dd847801d3cb036a5701bb0d4192b2fe342;hp=93846ff7311813ecb80372d66a6b8c663b0c4256;hb=87ecc6be399bf88d83093105c667d3abfd6593de;hpb=5b37e2e07ea31d59f7ad0a968c2bf64bd0fd8a5f;ds=sidebyside

diff --git a/inc/classes/interfaces/io/pointer/io/class_InputOutputPointer.php b/inc/classes/interfaces/io/pointer/io/class_InputOutputPointer.php
index 93846ff7..0cb98dd8 100644
--- a/inc/classes/interfaces/io/pointer/io/class_InputOutputPointer.php
+++ b/inc/classes/interfaces/io/pointer/io/class_InputOutputPointer.php
@@ -28,6 +28,29 @@ interface InputOutputPointer extends InputPointer, OutputPointer {
 	 * @return	$status		Status of this operation
 	 */
 	function rewind ();
+
+	/**
+	 * Advances to next "block" of bytes
+	 *
+	 * @return	void
+	 * @todo	This method will load large but empty files in a whole
+	 */
+	function next ();
+
+	/**
+	 * 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
+	 */
+	function valid ();
+
+	/**
+	 * Gets current seek position ("key").
+	 *
+	 * @return	$key	Current key in iteration
+	 */
+	function key ();
 }
 
 // [EOF]