githubFork/roundcubemail.git

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			<?php
			// +----------------------------------------------------------------------+
			// \| PHP version 5 \|
			// +----------------------------------------------------------------------+
			// \| Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, \|
			// \| Stig. S. Bakken, Lukas Smith \|
			// \| All rights reserved. \|
			// +----------------------------------------------------------------------+
			// \| MDB2 is a merge of PEAR DB and Metabases that provides a unified DB \|
			// \| API as well as database abstraction for PHP applications. \|
			// \| This LICENSE is in the BSD license style. \|
			// \| \|
			// \| Redistribution and use in source and binary forms, with or without \|
			// \| modification, are permitted provided that the following conditions \|
			// \| are met: \|
			// \| \|
			// \| Redistributions of source code must retain the above copyright \|
			// \| notice, this list of conditions and the following disclaimer. \|
			// \| \|
			// \| Redistributions in binary form must reproduce the above copyright \|
			// \| notice, this list of conditions and the following disclaimer in the \|
			// \| documentation and/or other materials provided with the distribution. \|
			// \| \|
			// \| Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, \|
			// \| Lukas Smith nor the names of his contributors may be used to endorse \|
			// \| or promote products derived from this software without specific prior\|
			// \| written permission. \|
			// \| \|
			// \| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \|
			// \| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT \|
			// \| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS \|
			// \| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE \|
			// \| REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, \|
			// \| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, \|
			// \| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS\|
			// \| OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED \|
			// \| AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT \|
			// \| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY\|
			// \| WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE \|
			// \| POSSIBILITY OF SUCH DAMAGE. \|
			// +----------------------------------------------------------------------+
			// \| Author: Lukas Smith <smith@pooteeweet.org> \|
			// +----------------------------------------------------------------------+
			//
			// $Id: Iterator.php 212543 2006-05-06 14:03:41Z lsmith $

			/**
			* PHP5 Iterator
			*
			* @package MDB2
			* @category Database
			* @author Lukas Smith <smith@pooteeweet.org>
			*/
			class MDB2_Iterator implements Iterator
			{
			protected $fetchmode;
			protected $result;
			protected $row;

			// {{{ constructor

			/**
			* Constructor
			*/
			public function __construct($result, $fetchmode = MDB2_FETCHMODE_DEFAULT)
			{
			$this->result = $result;
			$this->fetchmode = $fetchmode;
			}
			// }}}

			// {{{ seek()

			/**
			* Seek forward to a specific row in a result set
			*
			* @param int number of the row where the data can be found
			*
			* @return void
			* @access public
			*/
			public function seek($rownum)
			{
			$this->row = null;
			if ($this->result) {
			$this->result->seek($rownum);
			}
			}
			// }}}

			// {{{ next()

			/**
			* Fetch next row of data
			*
			* @return void
			* @access public
			*/
			public function next()
			{
			$this->row = null;
			}
			// }}}

			// {{{ current()

			/**
			* return a row of data
			*
			* @return void
			* @access public
			*/
			public function current()
			{
			if (is_null($this->row)) {
			$row = $this->result->fetchRow($this->fetchmode);
			if (PEAR::isError($row)) {
			$row = false;
			}
			$this->row = $row;
			}
			return $this->row;
			}
			// }}}

			// {{{ valid()

			/**
			* Check if the end of the result set has been reached
			*
			* @return bool true/false, false is also returned on failure
			* @access public
			*/
			public function valid()
			{
			return (bool)$this->current();
			}
			// }}}

			// {{{ free()

			/**
			* Free the internal resources associated with result.
			*
			* @return bool\|MDB2_Error true on success, false\|MDB2_Error if result is invalid
			* @access public
			*/
			public function free()
			{
			if ($this->result) {
			return $this->result->free();
			}
			$this->result = false;
			$this->row = null;
			return false;
			}
			// }}}

			// {{{ key()

			/**
			* Returns the row number
			*
			* @return int\|bool\|MDB2_Error true on success, false\|MDB2_Error if result is invalid
			* @access public
			*/
			public function key()
			{
			if ($this->result) {
			return $this->result->rowCount();
			}
			return false;
			}
			// }}}

			// {{{ rewind()

			/**
			* Seek to the first row in a result set
			*
			* @return void
			* @access public
			*/
			public function rewind()
			{
			}
			// }}}

			// {{{ destructor

			/**
			* Destructor
			*/
			public function __destruct()
			{
			$this->free();
			}
			// }}}
			}

			/**
			* PHP5 buffered Iterator
			*
			* @package MDB2
			* @category Database
			* @author Lukas Smith <smith@pooteeweet.org>
			*/
			class MDB2_BufferedIterator extends MDB2_Iterator implements SeekableIterator
			{
			// {{{ valid()

			/**
			* Check if the end of the result set has been reached
			*
			* @return bool\|MDB2_Error true on success, false\|MDB2_Error if result is invalid
			* @access public
			*/
			public function valid()
			{
			if ($this->result) {
			return $this->result->valid();
			}
			return false;
			}
			// }}}

			// {{{count()

			/**
			* Returns the number of rows in a result object
			*
			* @return int\|MDB2_Error number of rows, false\|MDB2_Error if result is invalid
			* @access public
			*/
			public function count()
			{
			if ($this->result) {
			return $this->result->numRows();
			}
			return false;
			}
			// }}}

			// {{{ rewind()

			/**
			* Seek to the first row in a result set
			*
			* @return void
			* @access public
			*/
			public function rewind()
			{
			$this->seek(0);
			}
			// }}}
			}

			?>