diff options
Diffstat (limited to 'trunk/adodb5/drivers/adodb-mssql_n.inc.php')
| -rw-r--r-- | trunk/adodb5/drivers/adodb-mssql_n.inc.php | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/trunk/adodb5/drivers/adodb-mssql_n.inc.php b/trunk/adodb5/drivers/adodb-mssql_n.inc.php deleted file mode 100644 index 017133f2..00000000 --- a/trunk/adodb5/drivers/adodb-mssql_n.inc.php +++ /dev/null @@ -1,171 +0,0 @@ -<?php - -/// $Id $ - -/////////////////////////////////////////////////////////////////////////// -// // -// NOTICE OF COPYRIGHT // -// // -// ADOdb - Database Abstraction Library for PHP // -// http://adodb.sourceforge.net/ // -// // -// Copyright (c) 2000-2012 John Lim (jlim\@natsoft.com.my) // -// All rights reserved. // -// Released under both BSD license and LGPL library license. // -// Whenever there is any discrepancy between the two licenses, // -// the BSD license will take precedence // -// // -// Moodle - Modular Object-Oriented Dynamic Learning Environment // -// http://moodle.com // -// // -// Copyright (C) 2001-3001 Martin Dougiamas http://dougiamas.com // -// (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com // -// // -// This program is free software; you can redistribute it and/or modify // -// it under the terms of the GNU General Public License as published by // -// the Free Software Foundation; either version 2 of the License, or // -// (at your option) any later version. // -// // -// This program is distributed in the hope that it will be useful, // -// but WITHOUT ANY WARRANTY; without even the implied warranty of // -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // -// GNU General Public License for more details: // -// // -// http://www.gnu.org/copyleft/gpl.html // -// // -/////////////////////////////////////////////////////////////////////////// - -/** -* MSSQL Driver with auto-prepended "N" for correct unicode storage -* of SQL literal strings. Intended to be used with MSSQL drivers that -* are sending UCS-2 data to MSSQL (FreeTDS and ODBTP) in order to get -* true cross-db compatibility from the application point of view. -*/ - -// security - hide paths -if (!defined('ADODB_DIR')) die(); - -// one useful constant -if (!defined('SINGLEQUOTE')) define('SINGLEQUOTE', "'"); - -include_once(ADODB_DIR.'/drivers/adodb-mssql.inc.php'); - -class ADODB_mssql_n extends ADODB_mssql { - var $databaseType = "mssql_n"; - - function ADODB_mssqlpo() - { - ADODB_mssql::ADODB_mssql(); - } - - function _query($sql,$inputarr=false) - { - $sql = $this->_appendN($sql); - return ADODB_mssql::_query($sql,$inputarr); - } - - /** - * This function will intercept all the literals used in the SQL, prepending the "N" char to them - * in order to allow mssql to store properly data sent in the correct UCS-2 encoding (by freeTDS - * and ODBTP) keeping SQL compatibility at ADOdb level (instead of hacking every project to add - * the "N" notation when working against MSSQL. - * - * Note that this hack only must be used if ALL the char-based columns in your DB are of type nchar, - * nvarchar and ntext - */ - function _appendN($sql) { - - $result = $sql; - - /// Check we have some single quote in the query. Exit ok. - if (strpos($sql, SINGLEQUOTE) === false) { - return $sql; - } - - /// Check we haven't an odd number of single quotes (this can cause problems below - /// and should be considered one wrong SQL). Exit with debug info. - if ((substr_count($sql, SINGLEQUOTE) & 1)) { - if ($this->debug) { - ADOConnection::outp("{$this->databaseType} internal transformation: not converted. Wrong number of quotes (odd)"); - } - return $sql; - } - - /// Check we haven't any backslash + single quote combination. It should mean wrong - /// backslashes use (bad magic_quotes_sybase?). Exit with debug info. - $regexp = '/(\\\\' . SINGLEQUOTE . '[^' . SINGLEQUOTE . '])/'; - if (preg_match($regexp, $sql)) { - if ($this->debug) { - ADOConnection::outp("{$this->databaseType} internal transformation: not converted. Found bad use of backslash + single quote"); - } - return $sql; - } - - /// Remove pairs of single-quotes - $pairs = array(); - $regexp = '/(' . SINGLEQUOTE . SINGLEQUOTE . ')/'; - preg_match_all($regexp, $result, $list_of_pairs); - if ($list_of_pairs) { - foreach (array_unique($list_of_pairs[0]) as $key=>$value) { - $pairs['<@#@#@PAIR-'.$key.'@#@#@>'] = $value; - } - if (!empty($pairs)) { - $result = str_replace($pairs, array_keys($pairs), $result); - } - } - - /// Remove the rest of literals present in the query - $literals = array(); - $regexp = '/(N?' . SINGLEQUOTE . '.*?' . SINGLEQUOTE . ')/is'; - preg_match_all($regexp, $result, $list_of_literals); - if ($list_of_literals) { - foreach (array_unique($list_of_literals[0]) as $key=>$value) { - $literals['<#@#@#LITERAL-'.$key.'#@#@#>'] = $value; - } - if (!empty($literals)) { - $result = str_replace($literals, array_keys($literals), $result); - } - } - - - /// Analyse literals to prepend the N char to them if their contents aren't numeric - if (!empty($literals)) { - foreach ($literals as $key=>$value) { - if (!is_numeric(trim($value, SINGLEQUOTE))) { - /// Non numeric string, prepend our dear N - $literals[$key] = 'N' . trim($value, 'N'); //Trimming potentially existing previous "N" - } - } - } - - /// Re-apply literals to the text - if (!empty($literals)) { - $result = str_replace(array_keys($literals), $literals, $result); - } - - /// Any pairs followed by N' must be switched to N' followed by those pairs - /// (or strings beginning with single quotes will fail) - $result = preg_replace("/((<@#@#@PAIR-(\d+)@#@#@>)+)N'/", "N'$1", $result); - - /// Re-apply pairs of single-quotes to the text - if (!empty($pairs)) { - $result = str_replace(array_keys($pairs), $pairs, $result); - } - - /// Print transformation if debug = on - if ($result != $sql && $this->debug) { - ADOConnection::outp("{$this->databaseType} internal transformation:<br>{$sql}<br>to<br>{$result}"); - } - - return $result; - } -} - -class ADORecordset_mssql_n extends ADORecordset_mssql { - var $databaseType = "mssql_n"; - function ADORecordset_mssql_n($id,$mode=false) - { - $this->ADORecordset_mssql($id,$mode); - } -} -?>
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