| commit | author | age | ||
| d13c36 | 1 | <?php |
| S | 2 | // +----------------------------------------------------------------------+ |
| 3 | // | PHP version 5 | | |
| 4 | // +----------------------------------------------------------------------+ | |
| 5 | // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, | | |
| 6 | // | Stig. S. Bakken, Lukas Smith | | |
| 7 | // | All rights reserved. | | |
| 8 | // +----------------------------------------------------------------------+ | |
| 9 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | | |
| 10 | // | API as well as database abstraction for PHP applications. | | |
| 11 | // | This LICENSE is in the BSD license style. | | |
| 12 | // | | | |
| 13 | // | Redistribution and use in source and binary forms, with or without | | |
| 14 | // | modification, are permitted provided that the following conditions | | |
| 15 | // | are met: | | |
| 16 | // | | | |
| 17 | // | Redistributions of source code must retain the above copyright | | |
| 18 | // | notice, this list of conditions and the following disclaimer. | | |
| 19 | // | | | |
| 20 | // | Redistributions in binary form must reproduce the above copyright | | |
| 21 | // | notice, this list of conditions and the following disclaimer in the | | |
| 22 | // | documentation and/or other materials provided with the distribution. | | |
| 23 | // | | | |
| 24 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | | |
| 25 | // | Lukas Smith nor the names of his contributors may be used to endorse | | |
| 26 | // | or promote products derived from this software without specific prior| | |
| 27 | // | written permission. | | |
| 28 | // | | | |
| 29 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | | |
| 30 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | | |
| 31 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | | |
| 32 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | | |
| 33 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | | |
| 34 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | | |
| 35 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| | |
| 36 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | | |
| 37 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | | |
| 38 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| | |
| 39 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | |
| 40 | // | POSSIBILITY OF SUCH DAMAGE. | | |
| 41 | // +----------------------------------------------------------------------+ | |
| 42 | // | Author: Lukas Smith <smith@pooteeweet.org> | | |
| 43 | // +----------------------------------------------------------------------+ | |
| 44 | // | |
| 45 | // $Id$ | |
| 46 | ||
| 47 | /** | |
| 48 | * @package MDB2 | |
| 49 | * @category Database | |
| 50 | * @author Lukas Smith <smith@pooteeweet.org> | |
| 51 | */ | |
| 52 | ||
| 53 | require_once 'MDB2.php'; | |
| 54 | ||
| 55 | class MDB2_LOB | |
| 56 | { | |
| 57 | var $db_index; | |
| 58 | var $lob_index; | |
| 59 | var $lob; | |
| 60 | ||
| 61 | function stream_open($path, $mode, $options, &$opened_path) | |
| 62 | { | |
| 63 | if (!preg_match('/^rb?\+?$/', $mode)) { | |
| 64 | return false; | |
| 65 | } | |
| 66 | $url = parse_url($path); | |
| 67 | if (!array_key_exists('host', $url) && !array_key_exists('user', $url)) { | |
| 68 | return false; | |
| 69 | } | |
| 70 | $this->db_index = $url['host']; | |
| 71 | if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) { | |
| 72 | return false; | |
| 73 | } | |
| 74 | $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; | |
| 75 | $this->lob_index = $url['user']; | |
| 76 | if (!isset($db->datatype->lobs[$this->lob_index])) { | |
| 77 | return false; | |
| 78 | } | |
| 79 | $this->lob =& $db->datatype->lobs[$this->lob_index]; | |
| 80 | $db->datatype->_retrieveLOB($this->lob); | |
| 81 | return true; | |
| 82 | } | |
| 83 | ||
| 84 | function stream_read($count) | |
| 85 | { | |
| 86 | if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { | |
| 87 | $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; | |
| 88 | ||
| 89 | $data = $db->datatype->_readLOB($this->lob, $count); | |
| 90 | $length = strlen($data); | |
| 91 | if ($length == 0) { | |
| 92 | $this->lob['endOfLOB'] = true; | |
| 93 | } | |
| 94 | $this->lob['position'] += $length; | |
| 95 | return $data; | |
| 96 | } | |
| 97 | } | |
| 98 | ||
| 99 | function stream_write($data) | |
| 100 | { | |
| 101 | return 0; | |
| 102 | } | |
| 103 | ||
| 104 | function stream_tell() | |
| 105 | { | |
| 106 | return $this->lob['position']; | |
| 107 | } | |
| 108 | ||
| 109 | function stream_eof() | |
| 110 | { | |
| 111 | if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) { | |
| 112 | return true; | |
| 113 | } | |
| 114 | $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; | |
| 115 | $result = $db->datatype->_endOfLOB($this->lob); | |
| 116 | if (version_compare(phpversion(), "5.0", ">=") | |
| 117 | && version_compare(phpversion(), "5.1", "<") | |
| 118 | ) { | |
| 119 | return !$result; | |
| 120 | } | |
| 121 | return $result; | |
| 122 | } | |
| 123 | ||
| 124 | function stream_seek($offset, $whence) | |
| 125 | { | |
| 126 | return false; | |
| 127 | } | |
| 128 | ||
| 129 | function stream_close() | |
| 130 | { | |
| 131 | if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { | |
| 132 | $db =& $GLOBALS['_MDB2_databases'][$this->db_index]; | |
| 133 | if (isset($db->datatype->lobs[$this->lob_index])) { | |
| 134 | $db->datatype->_destroyLOB($this->lob_index); | |
| 135 | unset($db->datatype->lobs[$this->lob_index]); | |
| 136 | } | |
| 137 | } | |
| 138 | } | |
| 139 | } | |
| 140 | ||
| 141 | if (!stream_wrapper_register("MDB2LOB", "MDB2_LOB")) { | |
| 142 | MDB2::raiseError(); | |
| 143 | return false; | |
| 144 | } | |
| 145 | ||
| 146 | ?> | |
