From 2273d4117fd50ee44dcdaa28fd6444383dc403a0 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Tue, 26 Jan 2010 08:45:16 -0500
Subject: [PATCH] - Add support for MDB2's 'sqlsrv' driver (#1486395)

---
 program/lib/MDB2/Driver/Datatype/mysqli.php | 1184 +++++++++++++++++++++++++++++-----------------------------
 1 files changed, 595 insertions(+), 589 deletions(-)

diff --git a/program/lib/MDB2/Driver/Datatype/mysqli.php b/program/lib/MDB2/Driver/Datatype/mysqli.php
index deba919..9ccd1b4 100644
--- a/program/lib/MDB2/Driver/Datatype/mysqli.php
+++ b/program/lib/MDB2/Driver/Datatype/mysqli.php
@@ -1,590 +1,596 @@
-<?php
-// vim: set et ts=4 sw=4 fdm=marker:
-// +----------------------------------------------------------------------+
-// | PHP versions 4 and 5                                                 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2007 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: mysqli.php,v 1.63 2008/02/22 19:23:49 quipo Exp $
-//
-
-require_once 'MDB2/Driver/Datatype/Common.php';
-
-/**
- * MDB2 MySQLi driver
- *
- * @package MDB2
- * @category Database
- * @author  Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Driver_Datatype_mysqli extends MDB2_Driver_Datatype_Common
-{
-    // {{{ _getCharsetFieldDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
-     * of a field declaration to be used in statements like CREATE TABLE.
-     *
-     * @param string $charset   name of the charset
-     * @return string  DBMS specific SQL code portion needed to set the CHARACTER SET
-     *                 of a field declaration.
-     */
-    function _getCharsetFieldDeclaration($charset)
-    {
-        return 'CHARACTER SET '.$charset;
-    }
-
-    // }}}
-    // {{{ _getCollationFieldDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to set the COLLATION
-     * of a field declaration to be used in statements like CREATE TABLE.
-     *
-     * @param string $collation   name of the collation
-     * @return string  DBMS specific SQL code portion needed to set the COLLATION
-     *                 of a field declaration.
-     */
-    function _getCollationFieldDeclaration($collation)
-    {
-        return 'COLLATE '.$collation;
-    }
-
-    // }}}
-    // {{{ getTypeDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to declare an text type
-     * field to be used in statements like CREATE TABLE.
-     *
-     * @param array $field  associative array with the name of the properties
-     *      of the field being declared as array indexes. Currently, the types
-     *      of supported field properties are as follows:
-     *
-     *      length
-     *          Integer value that determines the maximum length of the text
-     *          field. If this argument is missing the field should be
-     *          declared to have the longest length allowed by the DBMS.
-     *
-     *      default
-     *          Text value to be used as default for this field.
-     *
-     *      notnull
-     *          Boolean flag that indicates whether this field is constrained
-     *          to not be set to null.
-     * @return string  DBMS specific SQL code portion that should be used to
-     *      declare the specified field.
-     * @access public
-     */
-    function getTypeDeclaration($field)
-    {
-        $db =& $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        switch ($field['type']) {
-        case 'text':
-            if (empty($field['length']) && array_key_exists('default', $field)) {
-                $field['length'] = $db->varchar_max_length;
-            }
-            $length = !empty($field['length']) ? $field['length'] : false;
-            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
-            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR(255)')
-                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
-        case 'clob':
-            if (!empty($field['length'])) {
-                $length = $field['length'];
-                if ($length <= 255) {
-                    return 'TINYTEXT';
-                } elseif ($length <= 65532) {
-                    return 'TEXT';
-                } elseif ($length <= 16777215) {
-                    return 'MEDIUMTEXT';
-                }
-            }
-            return 'LONGTEXT';
-        case 'blob':
-            if (!empty($field['length'])) {
-                $length = $field['length'];
-                if ($length <= 255) {
-                    return 'TINYBLOB';
-                } elseif ($length <= 65532) {
-                    return 'BLOB';
-                } elseif ($length <= 16777215) {
-                    return 'MEDIUMBLOB';
-                }
-            }
-            return 'LONGBLOB';
-        case 'integer':
-            if (!empty($field['length'])) {
-                $length = $field['length'];
-                if ($length <= 1) {
-                    return 'TINYINT';
-                } elseif ($length == 2) {
-                    return 'SMALLINT';
-                } elseif ($length == 3) {
-                    return 'MEDIUMINT';
-                } elseif ($length == 4) {
-                    return 'INT';
-                } elseif ($length > 4) {
-                    return 'BIGINT';
-                }
-            }
-            return 'INT';
-        case 'boolean':
-            return 'TINYINT(1)';
-        case 'date':
-            return 'DATE';
-        case 'time':
-            return 'TIME';
-        case 'timestamp':
-            return 'DATETIME';
-        case 'float':
-            return 'DOUBLE';
-        case 'decimal':
-            $length = !empty($field['length']) ? $field['length'] : 18;
-            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
-            return 'DECIMAL('.$length.','.$scale.')';
-        }
-        return '';
-    }
-
-    // }}}
-    // {{{ _getIntegerDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to declare an integer type
-     * field to be used in statements like CREATE TABLE.
-     *
-     * @param string  $name   name the field to be declared.
-     * @param string  $field  associative array with the name of the properties
-     *                        of the field being declared as array indexes.
-     *                        Currently, the types of supported field
-     *                        properties are as follows:
-     *
-     *                       unsigned
-     *                        Boolean flag that indicates whether the field
-     *                        should be declared as unsigned integer if
-     *                        possible.
-     *
-     *                       default
-     *                        Integer value to be used as default for this
-     *                        field.
-     *
-     *                       notnull
-     *                        Boolean flag that indicates whether this field is
-     *                        constrained to not be set to null.
-     * @return string  DBMS specific SQL code portion that should be used to
-     *                 declare the specified field.
-     * @access protected
-     */
-    function _getIntegerDeclaration($name, $field)
-    {
-        $db =& $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $default = $autoinc = '';
-        if (!empty($field['autoincrement'])) {
-            $autoinc = ' AUTO_INCREMENT PRIMARY KEY';
-        } elseif (array_key_exists('default', $field)) {
-            if ($field['default'] === '') {
-                $field['default'] = empty($field['notnull']) ? null : 0;
-            }
-            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
-        }
-
-        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
-        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
-        $name = $db->quoteIdentifier($name, true);
-        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
-    }
-
-    // }}}
-    // {{{ _getFloatDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to declare an float type
-     * field to be used in statements like CREATE TABLE.
-     *
-     * @param string  $name   name the field to be declared.
-     * @param string  $field  associative array with the name of the properties
-     *                        of the field being declared as array indexes.
-     *                        Currently, the types of supported field
-     *                        properties are as follows:
-     *
-     *                       unsigned
-     *                        Boolean flag that indicates whether the field
-     *                        should be declared as unsigned float if
-     *                        possible.
-     *
-     *                       default
-     *                        float value to be used as default for this
-     *                        field.
-     *
-     *                       notnull
-     *                        Boolean flag that indicates whether this field is
-     *                        constrained to not be set to null.
-     * @return string  DBMS specific SQL code portion that should be used to
-     *                 declare the specified field.
-     * @access protected
-     */
-    function _getFloatDeclaration($name, $field)
-    {
-        // Since AUTO_INCREMENT can be used for integer or floating-point types,
-        // reuse the INTEGER declaration
-        // @see http://bugs.mysql.com/bug.php?id=31032
-        return $this->_getIntegerDeclaration($name, $field);
-    }
-
-    // }}}
-    // {{{ _getDecimalDeclaration()
-
-    /**
-     * Obtain DBMS specific SQL code portion needed to declare an decimal type
-     * field to be used in statements like CREATE TABLE.
-     *
-     * @param string  $name   name the field to be declared.
-     * @param string  $field  associative array with the name of the properties
-     *                        of the field being declared as array indexes.
-     *                        Currently, the types of supported field
-     *                        properties are as follows:
-     *
-     *                       unsigned
-     *                        Boolean flag that indicates whether the field
-     *                        should be declared as unsigned integer if
-     *                        possible.
-     *
-     *                       default
-     *                        Decimal value to be used as default for this
-     *                        field.
-     *
-     *                       notnull
-     *                        Boolean flag that indicates whether this field is
-     *                        constrained to not be set to null.
-     * @return string  DBMS specific SQL code portion that should be used to
-     *                 declare the specified field.
-     * @access protected
-     */
-    function _getDecimalDeclaration($name, $field)
-    {
-        $db =& $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $default = '';
-        if (array_key_exists('default', $field)) {
-            if ($field['default'] === '') {
-                $field['default'] = empty($field['notnull']) ? null : 0;
-            }
-            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
-        } elseif (empty($field['notnull'])) {
-            $default = ' DEFAULT NULL';
-        }
-
-        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
-        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
-        $name = $db->quoteIdentifier($name, true);
-        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull;
-    }
-
-    // }}}
-    // {{{ matchPattern()
-
-    /**
-     * build a pattern matching string
-     *
-     * @access public
-     *
-     * @param array $pattern even keys are strings, odd are patterns (% and _)
-     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
-     * @param string $field optional field name that is being matched against
-     *                  (might be required when emulating ILIKE)
-     *
-     * @return string SQL pattern
-     */
-    function matchPattern($pattern, $operator = null, $field = null)
-    {
-        $db =& $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $match = '';
-        if (!is_null($operator)) {
-            $field = is_null($field) ? '' : $field.' ';
-            $operator = strtoupper($operator);
-            switch ($operator) {
-            // case insensitive
-            case 'ILIKE':
-                $match = $field.'LIKE ';
-                break;
-            // case sensitive
-            case 'LIKE':
-                $match = $field.'LIKE BINARY ';
-                break;
-            default:
-                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                    'not a supported operator type:'. $operator, __FUNCTION__);
-            }
-        }
-        $match.= "'";
-        foreach ($pattern as $key => $value) {
-            if ($key % 2) {
-                $match.= $value;
-            } else {
-                $match.= $db->escapePattern($db->escape($value));
-            }
-        }
-        $match.= "'";
-        $match.= $this->patternEscapeString();
-        return $match;
-    }
-
-    // }}}
-    // {{{ _mapNativeDatatype()
-
-    /**
-     * Maps a native array description of a field to a MDB2 datatype and length
-     *
-     * @param array  $field native field description
-     * @return array containing the various possible types, length, sign, fixed
-     * @access public
-     */
-    function _mapNativeDatatype($field)
-    {
-        $db_type = strtolower($field['type']);
-        $db_type = strtok($db_type, '(), ');
-        if ($db_type == 'national') {
-            $db_type = strtok('(), ');
-        }
-        if (!empty($field['length'])) {
-            $length = strtok($field['length'], ', ');
-            $decimal = strtok(', ');
-        } else {
-            $length = strtok('(), ');
-            $decimal = strtok('(), ');
-        }
-        $type = array();
-        $unsigned = $fixed = null;
-        switch ($db_type) {
-        case 'tinyint':
-            $type[] = 'integer';
-            $type[] = 'boolean';
-            if (preg_match('/^(is|has)/', $field['name'])) {
-                $type = array_reverse($type);
-            }
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            $length = 1;
-            break;
-        case 'smallint':
-            $type[] = 'integer';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            $length = 2;
-            break;
-        case 'mediumint':
-            $type[] = 'integer';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            $length = 3;
-            break;
-        case 'int':
-        case 'integer':
-            $type[] = 'integer';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            $length = 4;
-            break;
-        case 'bigint':
-            $type[] = 'integer';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            $length = 8;
-            break;
-        case 'tinytext':
-        case 'mediumtext':
-        case 'longtext':
-        case 'text':
-        case 'varchar':
-            $fixed = false;
-        case 'string':
-        case 'char':
-            $type[] = 'text';
-            if ($length == '1') {
-                $type[] = 'boolean';
-                if (preg_match('/^(is|has)/', $field['name'])) {
-                    $type = array_reverse($type);
-                }
-            } elseif (strstr($db_type, 'text')) {
-                $type[] = 'clob';
-                if ($decimal == 'binary') {
-                    $type[] = 'blob';
-                }
-                $type = array_reverse($type);
-            }
-            if ($fixed !== false) {
-                $fixed = true;
-            }
-            break;
-        case 'enum':
-            $type[] = 'text';
-            preg_match_all('/\'.+\'/U', $field['type'], $matches);
-            $length = 0;
-            $fixed = false;
-            if (is_array($matches)) {
-                foreach ($matches[0] as $value) {
-                    $length = max($length, strlen($value)-2);
-                }
-                if ($length == '1' && count($matches[0]) == 2) {
-                    $type[] = 'boolean';
-                    if (preg_match('/^(is|has)/', $field['name'])) {
-                        $type = array_reverse($type);
-                    }
-                }
-            }
-            $type[] = 'integer';
-        case 'set':
-            $fixed = false;
-            $type[] = 'text';
-            $type[] = 'integer';
-            break;
-        case 'date':
-            $type[] = 'date';
-            $length = null;
-            break;
-        case 'datetime':
-        case 'timestamp':
-            $type[] = 'timestamp';
-            $length = null;
-            break;
-        case 'time':
-            $type[] = 'time';
-            $length = null;
-            break;
-        case 'float':
-        case 'double':
-        case 'real':
-            $type[] = 'float';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            break;
-        case 'unknown':
-        case 'decimal':
-        case 'numeric':
-            $type[] = 'decimal';
-            $unsigned = preg_match('/ unsigned/i', $field['type']);
-            if ($decimal !== false) {
-                $length = $length.','.$decimal;
-            }
-            break;
-        case 'tinyblob':
-        case 'mediumblob':
-        case 'longblob':
-        case 'blob':
-            $type[] = 'blob';
-            $length = null;
-            break;
-        case 'binary':
-        case 'varbinary':
-            $type[] = 'blob';
-            break;
-        case 'year':
-            $type[] = 'integer';
-            $type[] = 'date';
-            $length = null;
-            break;
-        default:
-            $db =& $this->getDBInstance();
-            if (PEAR::isError($db)) {
-                return $db;
-            }
-
-            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                'unknown database attribute type: '.$db_type, __FUNCTION__);
-        }
-
-        if ((int)$length <= 0) {
-            $length = null;
-        }
-
-        return array($type, $length, $unsigned, $fixed);
-    }
-
-    // }}}
-    // {{{ mapPrepareDatatype()
-
-    /**
-     * Maps an MDB2 datatype to native prepare type
-     *
-     * @param string $type
-     * @return string
-     * @access public
-     */
-    function mapPrepareDatatype($type)
-    {
-        $db =& $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        if (!empty($db->options['datatype_map'][$type])) {
-            $type = $db->options['datatype_map'][$type];
-            if (!empty($db->options['datatype_map_callback'][$type])) {
-                $parameter = array('type' => $type);
-                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
-            }
-        }
-
-        switch ($type) {
-            case 'integer':
-                return 'i';
-            case 'float':
-                return 'd';
-            case 'blob':
-                return 'b';
-            default:
-                break;
-        }
-        return 's';
-    }
-    
-    // }}}
-}
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 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: mysqli.php 292715 2009-12-28 14:06:34Z quipo $
+//
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 MySQLi driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_mysqli extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _getCharsetFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $charset   name of the charset
+     * @return string  DBMS specific SQL code portion needed to set the CHARACTER SET
+     *                 of a field declaration.
+     */
+    function _getCharsetFieldDeclaration($charset)
+    {
+        return 'CHARACTER SET '.$charset;
+    }
+
+    // }}}
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation   name of the collation
+     * @return string  DBMS specific SQL code portion needed to set the COLLATION
+     *                 of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return 'COLLATE '.$collation;
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            if (empty($field['length']) && array_key_exists('default', $field)) {
+                $field['length'] = $db->varchar_max_length;
+            }
+            $length = !empty($field['length']) ? $field['length'] : false;
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR(255)')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYTEXT';
+                } elseif ($length <= 65532) {
+                    return 'TEXT';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMTEXT';
+                }
+            }
+            return 'LONGTEXT';
+        case 'blob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYBLOB';
+                } elseif ($length <= 65532) {
+                    return 'BLOB';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMBLOB';
+                }
+            }
+            return 'LONGBLOB';
+        case 'integer':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 1) {
+                    return 'TINYINT';
+                } elseif ($length == 2) {
+                    return 'SMALLINT';
+                } elseif ($length == 3) {
+                    return 'MEDIUMINT';
+                } elseif ($length == 4) {
+                    return 'INT';
+                } elseif ($length > 4) {
+                    return 'BIGINT';
+                }
+            }
+            return 'INT';
+        case 'boolean':
+            return 'TINYINT(1)';
+        case 'date':
+            return 'DATE';
+        case 'time':
+            return 'TIME';
+        case 'timestamp':
+            return 'DATETIME';
+        case 'float':
+            return 'DOUBLE';
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'DECIMAL('.$length.','.$scale.')';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Integer value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = $autoinc = '';
+        if (!empty($field['autoincrement'])) {
+            $autoinc = ' AUTO_INCREMENT PRIMARY KEY';
+        } elseif (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
+    }
+
+    // }}}
+    // {{{ _getFloatDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an float type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned float if
+     *                        possible.
+     *
+     *                       default
+     *                        float value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getFloatDeclaration($name, $field)
+    {
+        // Since AUTO_INCREMENT can be used for integer or floating-point types,
+        // reuse the INTEGER declaration
+        // @see http://bugs.mysql.com/bug.php?id=31032
+        return $this->_getIntegerDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getDecimalDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an decimal type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Decimal value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getDecimalDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = '';
+        if (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull;
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (null !== $operator) {
+            $field = (null === $field) ? '' : $field.' ';
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                $match = $field.'LIKE ';
+                break;
+            case 'NOT ILIKE':
+                $match = $field.'NOT LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = $field.'LIKE BINARY ';
+                break;
+            case 'NOT LIKE':
+                $match = $field.'NOT LIKE BINARY ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                $match.= $db->escapePattern($db->escape($value));
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db_type = strtolower($field['type']);
+        $db_type = strtok($db_type, '(), ');
+        if ($db_type == 'national') {
+            $db_type = strtok('(), ');
+        }
+        if (!empty($field['length'])) {
+            $length = strtok($field['length'], ', ');
+            $decimal = strtok(', ');
+        } else {
+            $length = strtok('(), ');
+            $decimal = strtok('(), ');
+        }
+        $type = array();
+        $unsigned = $fixed = null;
+        switch ($db_type) {
+        case 'tinyint':
+            $type[] = 'integer';
+            $type[] = 'boolean';
+            if (preg_match('/^(is|has)/', $field['name'])) {
+                $type = array_reverse($type);
+            }
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 1;
+            break;
+        case 'smallint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 2;
+            break;
+        case 'mediumint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 3;
+            break;
+        case 'int':
+        case 'integer':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 4;
+            break;
+        case 'bigint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 8;
+            break;
+        case 'tinytext':
+        case 'mediumtext':
+        case 'longtext':
+        case 'text':
+        case 'varchar':
+            $fixed = false;
+        case 'string':
+        case 'char':
+            $type[] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                if ($decimal == 'binary') {
+                    $type[] = 'blob';
+                }
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'enum':
+            $type[] = 'text';
+            preg_match_all('/\'.+\'/U', $field['type'], $matches);
+            $length = 0;
+            $fixed = false;
+            if (is_array($matches)) {
+                foreach ($matches[0] as $value) {
+                    $length = max($length, strlen($value)-2);
+                }
+                if ($length == '1' && count($matches[0]) == 2) {
+                    $type[] = 'boolean';
+                    if (preg_match('/^(is|has)/', $field['name'])) {
+                        $type = array_reverse($type);
+                    }
+                }
+            }
+            $type[] = 'integer';
+        case 'set':
+            $fixed = false;
+            $type[] = 'text';
+            $type[] = 'integer';
+            break;
+        case 'date':
+            $type[] = 'date';
+            $length = null;
+            break;
+        case 'datetime':
+        case 'timestamp':
+            $type[] = 'timestamp';
+            $length = null;
+            break;
+        case 'time':
+            $type[] = 'time';
+            $length = null;
+            break;
+        case 'float':
+        case 'double':
+        case 'real':
+            $type[] = 'float';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            break;
+        case 'unknown':
+        case 'decimal':
+        case 'numeric':
+            $type[] = 'decimal';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            if ($decimal !== false) {
+                $length = $length.','.$decimal;
+            }
+            break;
+        case 'tinyblob':
+        case 'mediumblob':
+        case 'longblob':
+        case 'blob':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        case 'binary':
+        case 'varbinary':
+            $type[] = 'blob';
+            break;
+        case 'year':
+            $type[] = 'integer';
+            $type[] = 'date';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+
+    // }}}
+    // {{{ mapPrepareDatatype()
+
+    /**
+     * Maps an MDB2 datatype to native prepare type
+     *
+     * @param string $type
+     * @return string
+     * @access public
+     */
+    function mapPrepareDatatype($type)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+
+        switch ($type) {
+            case 'integer':
+                return 'i';
+            case 'float':
+                return 'd';
+            case 'blob':
+                return 'b';
+            default:
+                break;
+        }
+        return 's';
+    }
+    
+    // }}}
+}
 ?>
\ No newline at end of file

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