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Diffstat (limited to 'program/lib/MDB2/LOB.php')
| -rwxr-xr-x | program/lib/MDB2/LOB.php | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/program/lib/MDB2/LOB.php b/program/lib/MDB2/LOB.php new file mode 100755 index 000000000..c17abc9fb --- /dev/null +++ b/program/lib/MDB2/LOB.php @@ -0,0 +1,146 @@ +<?php +// +----------------------------------------------------------------------+ +// | PHP version 5 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1998-2004 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> | +// +----------------------------------------------------------------------+ +// +// $Id$ + +/** + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ + +require_once 'MDB2.php'; + +class MDB2_LOB +{ + var $db_index; + var $lob_index; + var $lob; + + function stream_open($path, $mode, $options, &$opened_path) + { + if (!preg_match('/^rb?\+?$/', $mode)) { + return false; + } + $url = parse_url($path); + if (!array_key_exists('host', $url) && !array_key_exists('user', $url)) { + return false; + } + $this->db_index = $url['host']; + if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) { + return false; + } + $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; + $this->lob_index = $url['user']; + if (!isset($db->datatype->lobs[$this->lob_index])) { + return false; + } + $this->lob =& $db->datatype->lobs[$this->lob_index]; + $db->datatype->_retrieveLOB($this->lob); + return true; + } + + function stream_read($count) + { + if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { + $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; + + $data = $db->datatype->_readLOB($this->lob, $count); + $length = strlen($data); + if ($length == 0) { + $this->lob['endOfLOB'] = true; + } + $this->lob['position'] += $length; + return $data; + } + } + + function stream_write($data) + { + return 0; + } + + function stream_tell() + { + return $this->lob['position']; + } + + function stream_eof() + { + if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) { + return true; + } + $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; + $result = $db->datatype->_endOfLOB($this->lob); + if (version_compare(phpversion(), "5.0", ">=") + && version_compare(phpversion(), "5.1", "<") + ) { + return !$result; + } + return $result; + } + + function stream_seek($offset, $whence) + { + return false; + } + + function stream_close() + { + if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { + $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; + if (isset($db->datatype->lobs[$this->lob_index])) { + $db->datatype->_destroyLOB($this->lob_index); + unset($db->datatype->lobs[$this->lob_index]); + } + } + } +} + +if (!stream_wrapper_register("MDB2LOB", "MDB2_LOB")) { + MDB2::raiseError(); + return false; +} + +?>
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