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authortill <till@php.net>2008-02-03 12:58:34 +0000
committertill <till@php.net>2008-02-03 12:58:34 +0000
commit95ebbc985a0e64a364e880de89dbc1ae7952d91e (patch)
tree78474efc88790b6d88e4976b51c7bebb5d017a37 /program/lib/MDB2/LOB.php
parent9f5bd376b47f41924ede3d8136302d0f7b81c89f (diff)
* putting latest MDB2 into SVN
* adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite
Diffstat (limited to 'program/lib/MDB2/LOB.php')
-rw-r--r--program/lib/MDB2/LOB.php264
1 files changed, 264 insertions, 0 deletions
diff --git a/program/lib/MDB2/LOB.php b/program/lib/MDB2/LOB.php
new file mode 100644
index 000000000..69db267d6
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+++ b/program/lib/MDB2/LOB.php
@@ -0,0 +1,264 @@
+<?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: LOB.php,v 1.34 2006/10/25 11:52:21 lsmith Exp $
+
+/**
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+
+require_once 'MDB2.php';
+
+/**
+ * MDB2_LOB: user land stream wrapper implementation for LOB support
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_LOB
+{
+ /**
+ * contains the key to the global MDB2 instance array of the associated
+ * MDB2 instance
+ *
+ * @var integer
+ * @access protected
+ */
+ var $db_index;
+
+ /**
+ * contains the key to the global MDB2_LOB instance array of the associated
+ * MDB2_LOB instance
+ *
+ * @var integer
+ * @access protected
+ */
+ var $lob_index;
+
+ // {{{ stream_open()
+
+ /**
+ * open stream
+ *
+ * @param string specifies the URL that was passed to fopen()
+ * @param string the mode used to open the file
+ * @param int holds additional flags set by the streams API
+ * @param string not used
+ *
+ * @return bool
+ * @access public
+ */
+ function stream_open($path, $mode, $options, &$opened_path)
+ {
+ if (!preg_match('/^rb?\+?$/', $mode)) {
+ return false;
+ }
+ $url = parse_url($path);
+ if (empty($url['host'])) {
+ return false;
+ }
+ $this->db_index = (int)$url['host'];
+ if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ return false;
+ }
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ $this->lob_index = (int)$url['user'];
+ if (!isset($db->datatype->lobs[$this->lob_index])) {
+ return false;
+ }
+ return true;
+ }
+ // }}}
+
+ // {{{ stream_read()
+
+ /**
+ * read stream
+ *
+ * @param int number of bytes to read
+ *
+ * @return string
+ * @access public
+ */
+ function stream_read($count)
+ {
+ if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ $db->datatype->_retrieveLOB($db->datatype->lobs[$this->lob_index]);
+
+ $data = $db->datatype->_readLOB($db->datatype->lobs[$this->lob_index], $count);
+ $length = strlen($data);
+ if ($length == 0) {
+ $db->datatype->lobs[$this->lob_index]['endOfLOB'] = true;
+ }
+ $db->datatype->lobs[$this->lob_index]['position'] += $length;
+ return $data;
+ }
+ }
+ // }}}
+
+ // {{{ stream_write()
+
+ /**
+ * write stream, note implemented
+ *
+ * @param string data
+ *
+ * @return int
+ * @access public
+ */
+ function stream_write($data)
+ {
+ return 0;
+ }
+ // }}}
+
+ // {{{ stream_tell()
+
+ /**
+ * return the current position
+ *
+ * @return int current position
+ * @access public
+ */
+ function stream_tell()
+ {
+ if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ return $db->datatype->lobs[$this->lob_index]['position'];
+ }
+ }
+ // }}}
+
+ // {{{ stream_eof()
+
+ /**
+ * Check if stream reaches EOF
+ *
+ * @return bool
+ * @access public
+ */
+ function stream_eof()
+ {
+ if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ return true;
+ }
+
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ $result = $db->datatype->_endOfLOB($db->datatype->lobs[$this->lob_index]);
+ if (version_compare(phpversion(), "5.0", ">=")
+ && version_compare(phpversion(), "5.1", "<")
+ ) {
+ return !$result;
+ }
+ return $result;
+ }
+ // }}}
+
+ // {{{ stream_seek()
+
+ /**
+ * Seek stream, not implemented
+ *
+ * @param int offset
+ * @param int whence
+ *
+ * @return bool
+ * @access public
+ */
+ function stream_seek($offset, $whence)
+ {
+ return false;
+ }
+ // }}}
+
+ // {{{ stream_stat()
+
+ /**
+ * return information about stream
+ *
+ * @access public
+ */
+ function stream_stat()
+ {
+ if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ return array(
+ 'db_index' => $this->db_index,
+ 'lob_index' => $this->lob_index,
+ );
+ }
+ }
+ // }}}
+
+ // {{{ stream_close()
+
+ /**
+ * close stream
+ *
+ * @access public
+ */
+ function stream_close()
+ {
+ if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+ $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+ if (isset($db->datatype->lobs[$this->lob_index])) {
+ $db->datatype->_destroyLOB($db->datatype->lobs[$this->lob_index]);
+ unset($db->datatype->lobs[$this->lob_index]);
+ }
+ }
+ }
+ // }}}
+}
+
+// register streams wrapper
+if (!stream_wrapper_register("MDB2LOB", "MDB2_LOB")) {
+ MDB2::raiseError();
+ return false;
+}
+
+?>