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+<?php
+/**
+ * @version V4.72 21 Feb 2006 (c) 2000-2006 John Lim (jlim@natsoft.com.my). All rights reserved.
+ * Released under both BSD license and Lesser GPL library license.
+ * Whenever there is any discrepancy between the two licenses,
+ * the BSD license will take precedence.
+ *
+ * Set tabs to 4 for best viewing.
+ *
+ * PEAR DB Emulation Layer for ADODB.
+ *
+ * The following code is modelled on PEAR DB code by Stig Bakken <ssb@fast.no> |
+ * and Tomas V.V.Cox <cox@idecnet.com>. Portions (c)1997-2002 The PHP Group.
+ */
+
+ /*
+ We support:
+
+ DB_Common
+ ---------
+ query - returns PEAR_Error on error
+ limitQuery - return PEAR_Error on error
+ prepare - does not return PEAR_Error on error
+ execute - does not return PEAR_Error on error
+ setFetchMode - supports ASSOC and ORDERED
+ errorNative
+ quote
+ nextID
+ disconnect
+
+ getOne
+ getAssoc
+ getRow
+ getCol
+ getAll
+
+ DB_Result
+ ---------
+ numRows - returns -1 if not supported
+ numCols
+ fetchInto - does not support passing of fetchmode
+ fetchRows - does not support passing of fetchmode
+ free
+ */
+
+define('ADODB_PEAR',dirname(__FILE__));
+include_once "PEAR.php";
+include_once ADODB_PEAR."/adodb-errorpear.inc.php";
+include_once ADODB_PEAR."/adodb.inc.php";
+
+if (!defined('DB_OK')) {
+define("DB_OK", 1);
+define("DB_ERROR",-1);
+
+// autoExecute constants
+define('DB_AUTOQUERY_INSERT', 1);
+define('DB_AUTOQUERY_UPDATE', 2);
+
+/**
+ * This is a special constant that tells DB the user hasn't specified
+ * any particular get mode, so the default should be used.
+ */
+
+define('DB_FETCHMODE_DEFAULT', 0);
+
+/**
+ * Column data indexed by numbers, ordered from 0 and up
+ */
+
+define('DB_FETCHMODE_ORDERED', 1);
+
+/**
+ * Column data indexed by column names
+ */
+
+define('DB_FETCHMODE_ASSOC', 2);
+
+/* for compatibility */
+
+define('DB_GETMODE_ORDERED', DB_FETCHMODE_ORDERED);
+define('DB_GETMODE_ASSOC', DB_FETCHMODE_ASSOC);
+
+/**
+ * these are constants for the tableInfo-function
+ * they are bitwised or'ed. so if there are more constants to be defined
+ * in the future, adjust DB_TABLEINFO_FULL accordingly
+ */
+
+define('DB_TABLEINFO_ORDER', 1);
+define('DB_TABLEINFO_ORDERTABLE', 2);
+define('DB_TABLEINFO_FULL', 3);
+}
+
+/**
+ * The main "DB" class is simply a container class with some static
+ * methods for creating DB objects as well as some utility functions
+ * common to all parts of DB.
+ *
+ */
+
+class DB
+{
+ /**
+ * Create a new DB object for the specified database type
+ *
+ * @param $type string database type, for example "mysql"
+ *
+ * @return object a newly created DB object, or a DB error code on
+ * error
+ */
+
+ function &factory($type)
+ {
+ include_once(ADODB_DIR."/drivers/adodb-$type.inc.php");
+ $obj = &NewADOConnection($type);
+ if (!is_object($obj)) $obj =& new PEAR_Error('Unknown Database Driver: '.$dsninfo['phptype'],-1);
+ return $obj;
+ }
+
+ /**
+ * Create a new DB object and connect to the specified database
+ *
+ * @param $dsn mixed "data source name", see the DB::parseDSN
+ * method for a description of the dsn format. Can also be
+ * specified as an array of the format returned by DB::parseDSN.
+ *
+ * @param $options mixed if boolean (or scalar), tells whether
+ * this connection should be persistent (for backends that support
+ * this). This parameter can also be an array of options, see
+ * DB_common::setOption for more information on connection
+ * options.
+ *
+ * @return object a newly created DB connection object, or a DB
+ * error object on error
+ *
+ * @see DB::parseDSN
+ * @see DB::isError
+ */
+ function &connect($dsn, $options = false)
+ {
+ if (is_array($dsn)) {
+ $dsninfo = $dsn;
+ } else {
+ $dsninfo = DB::parseDSN($dsn);
+ }
+ switch ($dsninfo["phptype"]) {
+ case 'pgsql': $type = 'postgres7'; break;
+ case 'ifx': $type = 'informix9'; break;
+ default: $type = $dsninfo["phptype"]; break;
+ }
+
+ if (is_array($options) && isset($options["debug"]) &&
+ $options["debug"] >= 2) {
+ // expose php errors with sufficient debug level
+ @include_once("adodb-$type.inc.php");
+ } else {
+ @include_once("adodb-$type.inc.php");
+ }
+
+ @$obj =& NewADOConnection($type);
+ if (!is_object($obj)) {
+ $obj =& new PEAR_Error('Unknown Database Driver: '.$dsninfo['phptype'],-1);
+ return $obj;
+ }
+ if (is_array($options)) {
+ foreach($options as $k => $v) {
+ switch(strtolower($k)) {
+ case 'persist':
+ case 'persistent': $persist = $v; break;
+ #ibase
+ case 'dialect': $obj->dialect = $v; break;
+ case 'charset': $obj->charset = $v; break;
+ case 'buffers': $obj->buffers = $v; break;
+ #ado
+ case 'charpage': $obj->charPage = $v; break;
+ #mysql
+ case 'clientflags': $obj->clientFlags = $v; break;
+ }
+ }
+ } else {
+ $persist = false;
+ }
+
+ if (isset($dsninfo['socket'])) $dsninfo['hostspec'] .= ':'.$dsninfo['socket'];
+ else if (isset($dsninfo['port'])) $dsninfo['hostspec'] .= ':'.$dsninfo['port'];
+
+ if($persist) $ok = $obj->PConnect($dsninfo['hostspec'], $dsninfo['username'],$dsninfo['password'],$dsninfo['database']);
+ else $ok = $obj->Connect($dsninfo['hostspec'], $dsninfo['username'],$dsninfo['password'],$dsninfo['database']);
+
+ if (!$ok) $obj = ADODB_PEAR_Error();
+ return $obj;
+ }
+
+ /**
+ * Return the DB API version
+ *
+ * @return int the DB API version number
+ */
+ function apiVersion()
+ {
+ return 2;
+ }
+
+ /**
+ * Tell whether a result code from a DB method is an error
+ *
+ * @param $value int result code
+ *
+ * @return bool whether $value is an error
+ */
+ function isError($value)
+ {
+ if (!is_object($value)) return false;
+ $class = get_class($value);
+ return $class == 'pear_error' || is_subclass_of($value, 'pear_error') ||
+ $class == 'db_error' || is_subclass_of($value, 'db_error');
+ }
+
+
+ /**
+ * Tell whether a result code from a DB method is a warning.
+ * Warnings differ from errors in that they are generated by DB,
+ * and are not fatal.
+ *
+ * @param $value mixed result value
+ *
+ * @return bool whether $value is a warning
+ */
+ function isWarning($value)
+ {
+ return false;
+ /*
+ return is_object($value) &&
+ (get_class( $value ) == "db_warning" ||
+ is_subclass_of($value, "db_warning"));*/
+ }
+
+ /**
+ * Parse a data source name
+ *
+ * @param $dsn string Data Source Name to be parsed
+ *
+ * @return array an associative array with the following keys:
+ *
+ * phptype: Database backend used in PHP (mysql, odbc etc.)
+ * dbsyntax: Database used with regards to SQL syntax etc.
+ * protocol: Communication protocol to use (tcp, unix etc.)
+ * hostspec: Host specification (hostname[:port])
+ * database: Database to use on the DBMS server
+ * username: User name for login
+ * password: Password for login
+ *
+ * The format of the supplied DSN is in its fullest form:
+ *
+ * phptype(dbsyntax)://username:password@protocol+hostspec/database
+ *
+ * Most variations are allowed:
+ *
+ * phptype://username:password@protocol+hostspec:110//usr/db_file.db
+ * phptype://username:password@hostspec/database_name
+ * phptype://username:password@hostspec
+ * phptype://username@hostspec
+ * phptype://hostspec/database
+ * phptype://hostspec
+ * phptype(dbsyntax)
+ * phptype
+ *
+ * @author Tomas V.V.Cox <cox@idecnet.com>
+ */
+ function parseDSN($dsn)
+ {
+ if (is_array($dsn)) {
+ return $dsn;
+ }
+
+ $parsed = array(
+ 'phptype' => false,
+ 'dbsyntax' => false,
+ 'protocol' => false,
+ 'hostspec' => false,
+ 'database' => false,
+ 'username' => false,
+ 'password' => false
+ );
+
+ // Find phptype and dbsyntax
+ if (($pos = strpos($dsn, '://')) !== false) {
+ $str = substr($dsn, 0, $pos);
+ $dsn = substr($dsn, $pos + 3);
+ } else {
+ $str = $dsn;
+ $dsn = NULL;
+ }
+
+ // Get phptype and dbsyntax
+ // $str => phptype(dbsyntax)
+ if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
+ $parsed['phptype'] = $arr[1];
+ $parsed['dbsyntax'] = (empty($arr[2])) ? $arr[1] : $arr[2];
+ } else {
+ $parsed['phptype'] = $str;
+ $parsed['dbsyntax'] = $str;
+ }
+
+ if (empty($dsn)) {
+ return $parsed;
+ }
+
+ // Get (if found): username and password
+ // $dsn => username:password@protocol+hostspec/database
+ if (($at = strpos($dsn,'@')) !== false) {
+ $str = substr($dsn, 0, $at);
+ $dsn = substr($dsn, $at + 1);
+ if (($pos = strpos($str, ':')) !== false) {
+ $parsed['username'] = urldecode(substr($str, 0, $pos));
+ $parsed['password'] = urldecode(substr($str, $pos + 1));
+ } else {
+ $parsed['username'] = urldecode($str);
+ }
+ }
+
+ // Find protocol and hostspec
+ // $dsn => protocol+hostspec/database
+ if (($pos=strpos($dsn, '/')) !== false) {
+ $str = substr($dsn, 0, $pos);
+ $dsn = substr($dsn, $pos + 1);
+ } else {
+ $str = $dsn;
+ $dsn = NULL;
+ }
+
+ // Get protocol + hostspec
+ // $str => protocol+hostspec
+ if (($pos=strpos($str, '+')) !== false) {
+ $parsed['protocol'] = substr($str, 0, $pos);
+ $parsed['hostspec'] = urldecode(substr($str, $pos + 1));
+ } else {
+ $parsed['hostspec'] = urldecode($str);
+ }
+
+ // Get dabase if any
+ // $dsn => database
+ if (!empty($dsn)) {
+ $parsed['database'] = $dsn;
+ }
+
+ return $parsed;
+ }
+
+ /**
+ * Load a PHP database extension if it is not loaded already.
+ *
+ * @access public
+ *
+ * @param $name the base name of the extension (without the .so or
+ * .dll suffix)
+ *
+ * @return bool true if the extension was already or successfully
+ * loaded, false if it could not be loaded
+ */
+ function assertExtension($name)
+ {
+ if (!extension_loaded($name)) {
+ $dlext = (strncmp(PHP_OS,'WIN',3) === 0) ? '.dll' : '.so';
+ @dl($name . $dlext);
+ }
+ if (!extension_loaded($name)) {
+ return false;
+ }
+ return true;
+ }
+}
+
+?> \ No newline at end of file
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