- Removed support for PEAR::DB driver

1 files changed, 0 insertions, 1116 deletions

diff --git a/program/lib/DB/pgsql.php b/program/lib/DB/pgsql.php
deleted file mode 100644
index fc3762a65..000000000
--- a/program/lib/DB/pgsql.php
+++ /dev/null
@@ -1,1116 +0,0 @@
-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's pgsql extension
- * for interacting with PostgreSQL databases
- *
- * PHP versions 4 and 5
- *
- * LICENSE: This source file is subject to version 3.0 of the PHP license
- * that is available through the world-wide-web at the following URI:
- * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
- * the PHP License and are unable to obtain it through the web, please
- * send a note to license@php.net so we can mail you a copy immediately.
- *
- * @category   Database
- * @package    DB
- * @author     Rui Hirokawa <hirokawa@php.net>
- * @author     Stig Bakken <ssb@php.net>
- * @author     Daniel Convissor <danielc@php.net>
- * @copyright  1997-2007 The PHP Group
- * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
- * @version    CVS: $Id$
- * @link       http://pear.php.net/package/DB
- */
-
-/**
- * Obtain the DB_common class so it can be extended from
- */
-require_once 'DB/common.php';
-
-/**
- * The methods PEAR DB uses to interact with PHP's pgsql extension
- * for interacting with PostgreSQL databases
- *
- * These methods overload the ones declared in DB_common.
- *
- * @category   Database
- * @package    DB
- * @author     Rui Hirokawa <hirokawa@php.net>
- * @author     Stig Bakken <ssb@php.net>
- * @author     Daniel Convissor <danielc@php.net>
- * @copyright  1997-2007 The PHP Group
- * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
- * @version    Release: 1.7.13
- * @link       http://pear.php.net/package/DB
- */
-class DB_pgsql extends DB_common
-{
-    // {{{ properties
-
-    /**
-     * The DB driver type (mysql, oci8, odbc, etc.)
-     * @var string
-     */
-    var $phptype = 'pgsql';
-
-    /**
-     * The database syntax variant to be used (db2, access, etc.), if any
-     * @var string
-     */
-    var $dbsyntax = 'pgsql';
-
-    /**
-     * The capabilities of this DB implementation
-     *
-     * The 'new_link' element contains the PHP version that first provided
-     * new_link support for this DBMS.  Contains false if it's unsupported.
-     *
-     * Meaning of the 'limit' element:
-     *   + 'emulate' = emulate with fetch row by number
-     *   + 'alter'   = alter the query
-     *   + false     = skip rows
-     *
-     * @var array
-     */
-    var $features = array(
-        'limit'         => 'alter',
-        'new_link'      => '4.3.0',
-        'numrows'       => true,
-        'pconnect'      => true,
-        'prepare'       => false,
-        'ssl'           => true,
-        'transactions'  => true,
-    );
-
-    /**
-     * A mapping of native error codes to DB error codes
-     * @var array
-     */
-    var $errorcode_map = array(
-    );
-
-    /**
-     * The raw database connection created by PHP
-     * @var resource
-     */
-    var $connection;
-
-    /**
-     * The DSN information for connecting to a database
-     * @var array
-     */
-    var $dsn = array();
-
-
-    /**
-     * Should data manipulation queries be committed automatically?
-     * @var bool
-     * @access private
-     */
-    var $autocommit = true;
-
-    /**
-     * The quantity of transactions begun
-     *
-     * {@internal  While this is private, it can't actually be designated
-     * private in PHP 5 because it is directly accessed in the test suite.}}
-     *
-     * @var integer
-     * @access private
-     */
-    var $transaction_opcount = 0;
-
-    /**
-     * The number of rows affected by a data manipulation query
-     * @var integer
-     */
-    var $affected = 0;
-
-    /**
-     * The current row being looked at in fetchInto()
-     * @var array
-     * @access private
-     */
-    var $row = array();
-
-    /**
-     * The number of rows in a given result set
-     * @var array
-     * @access private
-     */
-    var $_num_rows = array();
-
-
-    // }}}
-    // {{{ constructor
-
-    /**
-     * This constructor calls <kbd>$this->DB_common()</kbd>
-     *
-     * @return void
-     */
-    function DB_pgsql()
-    {
-        $this->DB_common();
-    }
-
-    // }}}
-    // {{{ connect()
-
-    /**
-     * Connect to the database server, log in and open the database
-     *
-     * Don't call this method directly.  Use DB::connect() instead.
-     *
-     * PEAR DB's pgsql driver supports the following extra DSN options:
-     *   + connect_timeout  How many seconds to wait for a connection to
-     *                       be established.  Available since PEAR DB 1.7.0.
-     *   + new_link         If set to true, causes subsequent calls to
-     *                       connect() to return a new connection link
-     *                       instead of the existing one.  WARNING: this is
-     *                       not portable to other DBMS's.  Available only
-     *                       if PHP is >= 4.3.0 and PEAR DB is >= 1.7.0.
-     *   + options          Command line options to be sent to the server.
-     *                       Available since PEAR DB 1.6.4.
-     *   + service          Specifies a service name in pg_service.conf that
-     *                       holds additional connection parameters.
-     *                       Available since PEAR DB 1.7.0.
-     *   + sslmode          How should SSL be used when connecting?  Values:
-     *                       disable, allow, prefer or require.
-     *                       Available since PEAR DB 1.7.0.
-     *   + tty              This was used to specify where to send server
-     *                       debug output.  Available since PEAR DB 1.6.4.
-     *
-     * Example of connecting to a new link via a socket:
-     * <code>
-     * require_once 'DB.php';
-     * 
-     * $dsn = 'pgsql://user:pass@unix(/tmp)/dbname?new_link=true';
-     * $options = array(
-     *     'portability' => DB_PORTABILITY_ALL,
-     * );
-     * 
-     * $db = DB::connect($dsn, $options);
-     * if (PEAR::isError($db)) {
-     *     die($db->getMessage());
-     * }
-     * </code>
-     *
-     * @param array $dsn         the data source name
-     * @param bool  $persistent  should the connection be persistent?
-     *
-     * @return int  DB_OK on success. A DB_Error object on failure.
-     *
-     * @link http://www.postgresql.org/docs/current/static/libpq.html#LIBPQ-CONNECT
-     */
-    function connect($dsn, $persistent = false)
-    {
-        if (!PEAR::loadExtension('pgsql')) {
-            return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
-        }
-
-        $this->dsn = $dsn;
-        if ($dsn['dbsyntax']) {
-            $this->dbsyntax = $dsn['dbsyntax'];
-        }
-
-        $protocol = $dsn['protocol'] ? $dsn['protocol'] : 'tcp';
-
-        $params = array('');
-        if ($protocol == 'tcp') {
-            if ($dsn['hostspec']) {
-                $params[0] .= 'host=' . $dsn['hostspec'];
-            }
-            if ($dsn['port']) {
-                $params[0] .= ' port=' . $dsn['port'];
-            }
-        } elseif ($protocol == 'unix') {
-            // Allow for pg socket in non-standard locations.
-            if ($dsn['socket']) {
-                $params[0] .= 'host=' . $dsn['socket'];
-            }
-            if ($dsn['port']) {
-                $params[0] .= ' port=' . $dsn['port'];
-            }
-        }
-        if ($dsn['database']) {
-            $params[0] .= ' dbname=\'' . addslashes($dsn['database']) . '\'';
-        }
-        if ($dsn['username']) {
-            $params[0] .= ' user=\'' . addslashes($dsn['username']) . '\'';
-        }
-        if ($dsn['password']) {
-            $params[0] .= ' password=\'' . addslashes($dsn['password']) . '\'';
-        }
-        if (!empty($dsn['options'])) {
-            $params[0] .= ' options=' . $dsn['options'];
-        }
-        if (!empty($dsn['tty'])) {
-            $params[0] .= ' tty=' . $dsn['tty'];
-        }
-        if (!empty($dsn['connect_timeout'])) {
-            $params[0] .= ' connect_timeout=' . $dsn['connect_timeout'];
-        }
-        if (!empty($dsn['sslmode'])) {
-            $params[0] .= ' sslmode=' . $dsn['sslmode'];
-        }
-        if (!empty($dsn['service'])) {
-            $params[0] .= ' service=' . $dsn['service'];
-        }
-
-        if (isset($dsn['new_link'])
-            && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true))
-        {
-            if (version_compare(phpversion(), '4.3.0', '>=')) {
-                $params[] = PGSQL_CONNECT_FORCE_NEW;
-            }
-        }
-
-        $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
-
-        $ini = ini_get('track_errors');
-        $php_errormsg = '';
-        if ($ini) {
-            $this->connection = @call_user_func_array($connect_function,
-                                                      $params);
-        } else {
-            @ini_set('track_errors', 1);
-            $this->connection = @call_user_func_array($connect_function,
-                                                      $params);
-            @ini_set('track_errors', $ini);
-        }
-
-        if (!$this->connection) {
-            return $this->raiseError(DB_ERROR_CONNECT_FAILED,
-                                     null, null, null,
-                                     $php_errormsg);
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ disconnect()
-
-    /**
-     * Disconnects from the database server
-     *
-     * @return bool  TRUE on success, FALSE on failure
-     */
-    function disconnect()
-    {
-        $ret = @pg_close($this->connection);
-        $this->connection = null;
-        return $ret;
-    }
-
-    // }}}
-    // {{{ simpleQuery()
-
-    /**
-     * Sends a query to the database server
-     *
-     * @param string  the SQL query string
-     *
-     * @return mixed  + a PHP result resrouce for successful SELECT queries
-     *                + the DB_OK constant for other successful queries
-     *                + a DB_Error object on failure
-     */
-    function simpleQuery($query)
-    {
-        $ismanip = $this->_checkManip($query);
-        $this->last_query = $query;
-        $query = $this->modifyQuery($query);
-        if (!$this->autocommit && $ismanip) {
-            if ($this->transaction_opcount == 0) {
-                $result = @pg_exec($this->connection, 'begin;');
-                if (!$result) {
-                    return $this->pgsqlRaiseError();
-                }
-            }
-            $this->transaction_opcount++;
-        }
-        $result = @pg_exec($this->connection, $query);
-        if (!$result) {
-            return $this->pgsqlRaiseError();
-        }
-
-        /*
-         * Determine whether queries produce affected rows, result or nothing.
-         *
-         * This logic was introduced in version 1.1 of the file by ssb,
-         * though the regex has been modified slightly since then.
-         *
-         * PostgreSQL commands:
-         * ABORT, ALTER, BEGIN, CLOSE, CLUSTER, COMMIT, COPY,
-         * CREATE, DECLARE, DELETE, DROP TABLE, EXPLAIN, FETCH,
-         * GRANT, INSERT, LISTEN, LOAD, LOCK, MOVE, NOTIFY, RESET,
-         * REVOKE, ROLLBACK, SELECT, SELECT INTO, SET, SHOW,
-         * UNLISTEN, UPDATE, VACUUM
-         */
-        if ($ismanip) {
-            $this->affected = @pg_affected_rows($result);
-            return DB_OK;
-        } elseif (preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si',
-                             $query))
-        {
-            $this->row[(int)$result] = 0; // reset the row counter.
-            $numrows = $this->numRows($result);
-            if (is_object($numrows)) {
-                return $numrows;
-            }
-            $this->_num_rows[(int)$result] = $numrows;
-            $this->affected = 0;
-            return $result;
-        } else {
-            $this->affected = 0;
-            return DB_OK;
-        }
-    }
-
-    // }}}
-    // {{{ nextResult()
-
-    /**
-     * Move the internal pgsql result pointer to the next available result
-     *
-     * @param a valid fbsql result resource
-     *
-     * @access public
-     *
-     * @return true if a result is available otherwise return false
-     */
-    function nextResult($result)
-    {
-        return false;
-    }
-
-    // }}}
-    // {{{ fetchInto()
-
-    /**
-     * Places a row from the result set into the given array
-     *
-     * Formating of the array and the data therein are configurable.
-     * See DB_result::fetchInto() for more information.
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::fetchInto() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result    the query result resource
-     * @param array    $arr       the referenced array to put the data in
-     * @param int      $fetchmode how the resulting array should be indexed
-     * @param int      $rownum    the row number to fetch (0 = first row)
-     *
-     * @return mixed  DB_OK on success, NULL when the end of a result set is
-     *                 reached or on failure
-     *
-     * @see DB_result::fetchInto()
-     */
-    function fetchInto($result, &$arr, $fetchmode, $rownum = null)
-    {
-        $result_int = (int)$result;
-        $rownum = ($rownum !== null) ? $rownum : $this->row[$result_int];
-        if ($rownum >= $this->_num_rows[$result_int]) {
-            return null;
-        }
-        if ($fetchmode & DB_FETCHMODE_ASSOC) {
-            $arr = @pg_fetch_array($result, $rownum, PGSQL_ASSOC);
-            if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
-                $arr = array_change_key_case($arr, CASE_LOWER);
-            }
-        } else {
-            $arr = @pg_fetch_row($result, $rownum);
-        }
-        if (!$arr) {
-            return null;
-        }
-        if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
-            $this->_rtrimArrayValues($arr);
-        }
-        if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
-            $this->_convertNullArrayValuesToEmpty($arr);
-        }
-        $this->row[$result_int] = ++$rownum;
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ freeResult()
-
-    /**
-     * Deletes the result set and frees the memory occupied by the result set
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::free() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return bool  TRUE on success, FALSE if $result is invalid
-     *
-     * @see DB_result::free()
-     */
-    function freeResult($result)
-    {
-        if (is_resource($result)) {
-            unset($this->row[(int)$result]);
-            unset($this->_num_rows[(int)$result]);
-            $this->affected = 0;
-            return @pg_freeresult($result);
-        }
-        return false;
-    }
-
-    // }}}
-    // {{{ quote()
-
-    /**
-     * @deprecated  Deprecated in release 1.6.0
-     * @internal
-     */
-    function quote($str)
-    {
-        return $this->quoteSmart($str);
-    }
-
-    // }}}
-    // {{{ quoteBoolean()
-
-    /**
-     * Formats a boolean value for use within a query in a locale-independent
-     * manner.
-     *
-     * @param boolean the boolean value to be quoted.
-     * @return string the quoted string.
-     * @see DB_common::quoteSmart()
-     * @since Method available since release 1.7.8.
-     */
-    function quoteBoolean($boolean) {
-        return $boolean ? 'TRUE' : 'FALSE';
-    }
-     
-    // }}}
-    // {{{ escapeSimple()
-
-    /**
-     * Escapes a string according to the current DBMS's standards
-     *
-     * {@internal PostgreSQL treats a backslash as an escape character,
-     * so they are escaped as well.
-     *
-     * @param string $str  the string to be escaped
-     *
-     * @return string  the escaped string
-     *
-     * @see DB_common::quoteSmart()
-     * @since Method available since Release 1.6.0
-     */
-    function escapeSimple($str)
-    {
-        if (function_exists('pg_escape_string')) {
-            /* This fixes an undocumented BC break in PHP 5.2.0 which changed
-             * the prototype of pg_escape_string. I'm not thrilled about having
-             * to sniff the PHP version, quite frankly, but it's the only way
-             * to deal with the problem. Revision 1.331.2.13.2.10 on
-             * php-src/ext/pgsql/pgsql.c (PHP_5_2 branch) is to blame, for the
-             * record. */
-            if (version_compare(PHP_VERSION, '5.2.0', '>=')) {
-                return pg_escape_string($this->connection, $str);
-            } else {
-                return pg_escape_string($str);
-            }
-        } else {
-            return str_replace("'", "''", str_replace('\\', '\\\\', $str));
-        }
-    }
-
-    // }}}
-    // {{{ numCols()
-
-    /**
-     * Gets the number of columns in a result set
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::numCols() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return int  the number of columns.  A DB_Error object on failure.
-     *
-     * @see DB_result::numCols()
-     */
-    function numCols($result)
-    {
-        $cols = @pg_numfields($result);
-        if (!$cols) {
-            return $this->pgsqlRaiseError();
-        }
-        return $cols;
-    }
-
-    // }}}
-    // {{{ numRows()
-
-    /**
-     * Gets the number of rows in a result set
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::numRows() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return int  the number of rows.  A DB_Error object on failure.
-     *
-     * @see DB_result::numRows()
-     */
-    function numRows($result)
-    {
-        $rows = @pg_numrows($result);
-        if ($rows === null) {
-            return $this->pgsqlRaiseError();
-        }
-        return $rows;
-    }
-
-    // }}}
-    // {{{ autoCommit()
-
-    /**
-     * Enables or disables automatic commits
-     *
-     * @param bool $onoff  true turns it on, false turns it off
-     *
-     * @return int  DB_OK on success.  A DB_Error object if the driver
-     *               doesn't support auto-committing transactions.
-     */
-    function autoCommit($onoff = false)
-    {
-        // XXX if $this->transaction_opcount > 0, we should probably
-        // issue a warning here.
-        $this->autocommit = $onoff ? true : false;
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ commit()
-
-    /**
-     * Commits the current transaction
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     */
-    function commit()
-    {
-        if ($this->transaction_opcount > 0) {
-            // (disabled) hack to shut up error messages from libpq.a
-            //@fclose(@fopen("php://stderr", "w"));
-            $result = @pg_exec($this->connection, 'end;');
-            $this->transaction_opcount = 0;
-            if (!$result) {
-                return $this->pgsqlRaiseError();
-            }
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ rollback()
-
-    /**
-     * Reverts the current transaction
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     */
-    function rollback()
-    {
-        if ($this->transaction_opcount > 0) {
-            $result = @pg_exec($this->connection, 'abort;');
-            $this->transaction_opcount = 0;
-            if (!$result) {
-                return $this->pgsqlRaiseError();
-            }
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ affectedRows()
-
-    /**
-     * Determines the number of rows affected by a data maniuplation query
-     *
-     * 0 is returned for queries that don't manipulate data.
-     *
-     * @return int  the number of rows.  A DB_Error object on failure.
-     */
-    function affectedRows()
-    {
-        return $this->affected;
-    }
-
-    // }}}
-    // {{{ nextId()
-
-    /**
-     * Returns the next free id in a sequence
-     *
-     * @param string  $seq_name  name of the sequence
-     * @param boolean $ondemand  when true, the seqence is automatically
-     *                            created if it does not exist
-     *
-     * @return int  the next id number in the sequence.
-     *               A DB_Error object on failure.
-     *
-     * @see DB_common::nextID(), DB_common::getSequenceName(),
-     *      DB_pgsql::createSequence(), DB_pgsql::dropSequence()
-     */
-    function nextId($seq_name, $ondemand = true)
-    {
-        $seqname = $this->getSequenceName($seq_name);
-        $repeat = false;
-        do {
-            $this->pushErrorHandling(PEAR_ERROR_RETURN);
-            $result = $this->query("SELECT NEXTVAL('${seqname}')");
-            $this->popErrorHandling();
-            if ($ondemand && DB::isError($result) &&
-                $result->getCode() == DB_ERROR_NOSUCHTABLE) {
-                $repeat = true;
-                $this->pushErrorHandling(PEAR_ERROR_RETURN);
-                $result = $this->createSequence($seq_name);
-                $this->popErrorHandling();
-                if (DB::isError($result)) {
-                    return $this->raiseError($result);
-                }
-            } else {
-                $repeat = false;
-            }
-        } while ($repeat);
-        if (DB::isError($result)) {
-            return $this->raiseError($result);
-        }
-        $arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
-        $result->free();
-        return $arr[0];
-    }
-
-    // }}}
-    // {{{ createSequence()
-
-    /**
-     * Creates a new sequence
-     *
-     * @param string $seq_name  name of the new sequence
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     *
-     * @see DB_common::createSequence(), DB_common::getSequenceName(),
-     *      DB_pgsql::nextID(), DB_pgsql::dropSequence()
-     */
-    function createSequence($seq_name)
-    {
-        $seqname = $this->getSequenceName($seq_name);
-        $result = $this->query("CREATE SEQUENCE ${seqname}");
-        return $result;
-    }
-
-    // }}}
-    // {{{ dropSequence()
-
-    /**
-     * Deletes a sequence
-     *
-     * @param string $seq_name  name of the sequence to be deleted
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     *
-     * @see DB_common::dropSequence(), DB_common::getSequenceName(),
-     *      DB_pgsql::nextID(), DB_pgsql::createSequence()
-     */
-    function dropSequence($seq_name)
-    {
-        return $this->query('DROP SEQUENCE '
-                            . $this->getSequenceName($seq_name));
-    }
-
-    // }}}
-    // {{{ modifyLimitQuery()
-
-    /**
-     * Adds LIMIT clauses to a query string according to current DBMS standards
-     *
-     * @param string $query   the query to modify
-     * @param int    $from    the row to start to fetching (0 = the first row)
-     * @param int    $count   the numbers of rows to fetch
-     * @param mixed  $params  array, string or numeric data to be used in
-     *                         execution of the statement.  Quantity of items
-     *                         passed must match quantity of placeholders in
-     *                         query:  meaning 1 placeholder for non-array
-     *                         parameters or 1 placeholder per array element.
-     *
-     * @return string  the query string with LIMIT clauses added
-     *
-     * @access protected
-     */
-    function modifyLimitQuery($query, $from, $count, $params = array())
-    {
-        return "$query LIMIT $count OFFSET $from";
-    }
-
-    // }}}
-    // {{{ pgsqlRaiseError()
-
-    /**
-     * Produces a DB_Error object regarding the current problem
-     *
-     * @param int $errno  if the error is being manually raised pass a
-     *                     DB_ERROR* constant here.  If this isn't passed
-     *                     the error information gathered from the DBMS.
-     *
-     * @return object  the DB_Error object
-     *
-     * @see DB_common::raiseError(),
-     *      DB_pgsql::errorNative(), DB_pgsql::errorCode()
-     */
-    function pgsqlRaiseError($errno = null)
-    {
-        $native = $this->errorNative();
-        if (!$native) {
-            $native = 'Database connection has been lost.';
-            $errno = DB_ERROR_CONNECT_FAILED;
-        }
-        if ($errno === null) {
-            $errno = $this->errorCode($native);
-        }
-        return $this->raiseError($errno, null, null, null, $native);
-    }
-
-    // }}}
-    // {{{ errorNative()
-
-    /**
-     * Gets the DBMS' native error message produced by the last query
-     *
-     * {@internal Error messages are used instead of error codes 
-     * in order to support older versions of PostgreSQL.}}
-     *
-     * @return string  the DBMS' error message
-     */
-    function errorNative()
-    {
-        return @pg_errormessage($this->connection);
-    }
-
-    // }}}
-    // {{{ errorCode()
-
-    /**
-     * Determines PEAR::DB error code from the database's text error message.
-     *
-     * @param  string  $errormsg  error message returned from the database
-     * @return integer  an error number from a DB error constant
-     */
-    function errorCode($errormsg)
-    {
-        static $error_regexps;
-        if (!isset($error_regexps)) {
-            $error_regexps = array(
-                '/column .* (of relation .*)?does not exist/i'
-                    => DB_ERROR_NOSUCHFIELD,
-                '/(relation|sequence|table).*does not exist|class .* not found/i'
-                    => DB_ERROR_NOSUCHTABLE,
-                '/index .* does not exist/'
-                    => DB_ERROR_NOT_FOUND,
-                '/relation .* already exists/i'
-                    => DB_ERROR_ALREADY_EXISTS,
-                '/(divide|division) by zero$/i'
-                    => DB_ERROR_DIVZERO,
-                '/pg_atoi: error in .*: can\'t parse /i'
-                    => DB_ERROR_INVALID_NUMBER,
-                '/invalid input syntax for( type)? (integer|numeric)/i'
-                    => DB_ERROR_INVALID_NUMBER,
-                '/value .* is out of range for type \w*int/i'
-                    => DB_ERROR_INVALID_NUMBER,
-                '/integer out of range/i'
-                    => DB_ERROR_INVALID_NUMBER,
-                '/value too long for type character/i'
-                    => DB_ERROR_INVALID,
-                '/attribute .* not found|relation .* does not have attribute/i'
-                    => DB_ERROR_NOSUCHFIELD,
-                '/column .* specified in USING clause does not exist in (left|right) table/i'
-                    => DB_ERROR_NOSUCHFIELD,
-                '/parser: parse error at or near/i'
-                    => DB_ERROR_SYNTAX,
-                '/syntax error at/'
-                    => DB_ERROR_SYNTAX,
-                '/column reference .* is ambiguous/i'
-                    => DB_ERROR_SYNTAX,
-                '/permission denied/'
-                    => DB_ERROR_ACCESS_VIOLATION,
-                '/violates not-null constraint/'
-                    => DB_ERROR_CONSTRAINT_NOT_NULL,
-                '/violates [\w ]+ constraint/'
-                    => DB_ERROR_CONSTRAINT,
-                '/referential integrity violation/'
-                    => DB_ERROR_CONSTRAINT,
-                '/more expressions than target columns/i'
-                    => DB_ERROR_VALUE_COUNT_ON_ROW,
-            );
-        }
-        foreach ($error_regexps as $regexp => $code) {
-            if (preg_match($regexp, $errormsg)) {
-                return $code;
-            }
-        }
-        // Fall back to DB_ERROR if there was no mapping.
-        return DB_ERROR;
-    }
-
-    // }}}
-    // {{{ tableInfo()
-
-    /**
-     * Returns information about a table or a result set
-     *
-     * NOTE: only supports 'table' and 'flags' if <var>$result</var>
-     * is a table name.
-     *
-     * @param object|string  $result  DB_result object from a query or a
-     *                                 string containing the name of a table.
-     *                                 While this also accepts a query result
-     *                                 resource identifier, this behavior is
-     *                                 deprecated.
-     * @param int            $mode    a valid tableInfo mode
-     *
-     * @return array  an associative array with the information requested.
-     *                 A DB_Error object on failure.
-     *
-     * @see DB_common::tableInfo()
-     */
-    function tableInfo($result, $mode = null)
-    {
-        if (is_string($result)) {
-            /*
-             * Probably received a table name.
-             * Create a result resource identifier.
-             */
-            $id = @pg_exec($this->connection, "SELECT * FROM $result LIMIT 0");
-            $got_string = true;
-        } elseif (isset($result->result)) {
-            /*
-             * Probably received a result object.
-             * Extract the result resource identifier.
-             */
-            $id = $result->result;
-            $got_string = false;
-        } else {
-            /*
-             * Probably received a result resource identifier.
-             * Copy it.
-             * Deprecated.  Here for compatibility only.
-             */
-            $id = $result;
-            $got_string = false;
-        }
-
-        if (!is_resource($id)) {
-            return $this->pgsqlRaiseError(DB_ERROR_NEED_MORE_DATA);
-        }
-
-        if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
-            $case_func = 'strtolower';
-        } else {
-            $case_func = 'strval';
-        }
-
-        $count = @pg_numfields($id);
-        $res   = array();
-
-        if ($mode) {
-            $res['num_fields'] = $count;
-        }
-
-        for ($i = 0; $i < $count; $i++) {
-            $res[$i] = array(
-                'table' => $got_string ? $case_func($result) : '',
-                'name'  => $case_func(@pg_fieldname($id, $i)),
-                'type'  => @pg_fieldtype($id, $i),
-                'len'   => @pg_fieldsize($id, $i),
-                'flags' => $got_string
-                           ? $this->_pgFieldFlags($id, $i, $result)
-                           : '',
-            );
-            if ($mode & DB_TABLEINFO_ORDER) {
-                $res['order'][$res[$i]['name']] = $i;
-            }
-            if ($mode & DB_TABLEINFO_ORDERTABLE) {
-                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
-            }
-        }
-
-        // free the result only if we were called on a table
-        if ($got_string) {
-            @pg_freeresult($id);
-        }
-        return $res;
-    }
-
-    // }}}
-    // {{{ _pgFieldFlags()
-
-    /**
-     * Get a column's flags
-     *
-     * Supports "not_null", "default_value", "primary_key", "unique_key"
-     * and "multiple_key".  The default value is passed through
-     * rawurlencode() in case there are spaces in it.
-     *
-     * @param int $resource   the PostgreSQL result identifier
-     * @param int $num_field  the field number
-     *
-     * @return string  the flags
-     *
-     * @access private
-     */
-    function _pgFieldFlags($resource, $num_field, $table_name)
-    {
-        $field_name = @pg_fieldname($resource, $num_field);
-
-        // Check if there's a schema in $table_name and update things
-        // accordingly.
-        $from = 'pg_attribute f, pg_class tab, pg_type typ';
-        if (strpos($table_name, '.') !== false) {
-            $from .= ', pg_namespace nsp';
-            list($schema, $table) = explode('.', $table_name);
-            $tableWhere = "tab.relname = '$table' AND tab.relnamespace = nsp.oid AND nsp.nspname = '$schema'";
-        } else {
-            $tableWhere = "tab.relname = '$table_name'";
-        }
-
-        $result = @pg_exec($this->connection, "SELECT f.attnotnull, f.atthasdef
-                                FROM $from
-                                WHERE tab.relname = typ.typname
-                                AND typ.typrelid = f.attrelid
-                                AND f.attname = '$field_name'
-                                AND $tableWhere");
-        if (@pg_numrows($result) > 0) {
-            $row = @pg_fetch_row($result, 0);
-            $flags  = ($row[0] == 't') ? 'not_null ' : '';
-
-            if ($row[1] == 't') {
-                $result = @pg_exec($this->connection, "SELECT a.adsrc
-                                    FROM $from, pg_attrdef a
-                                    WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid
-                                    AND f.attrelid = a.adrelid AND f.attname = '$field_name'
-                                    AND $tableWhere AND f.attnum = a.adnum");
-                $row = @pg_fetch_row($result, 0);
-                $num = preg_replace("/'(.*)'::\w+/", "\\1", $row[0]);
-                $flags .= 'default_' . rawurlencode($num) . ' ';
-            }
-        } else {
-            $flags = '';
-        }
-        $result = @pg_exec($this->connection, "SELECT i.indisunique, i.indisprimary, i.indkey
-                                FROM $from, pg_index i
-                                WHERE tab.relname = typ.typname
-                                AND typ.typrelid = f.attrelid
-                                AND f.attrelid = i.indrelid
-                                AND f.attname = '$field_name'
-                                AND $tableWhere");
-        $count = @pg_numrows($result);
-
-        for ($i = 0; $i < $count ; $i++) {
-            $row = @pg_fetch_row($result, $i);
-            $keys = explode(' ', $row[2]);
-
-            if (in_array($num_field + 1, $keys)) {
-                $flags .= ($row[0] == 't' && $row[1] == 'f') ? 'unique_key ' : '';
-                $flags .= ($row[1] == 't') ? 'primary_key ' : '';
-                if (count($keys) > 1)
-                    $flags .= 'multiple_key ';
-            }
-        }
-
-        return trim($flags);
-    }
-
-    // }}}
-    // {{{ getSpecialQuery()
-
-    /**
-     * Obtains the query string needed for listing a given type of objects
-     *
-     * @param string $type  the kind of objects you want to retrieve
-     *
-     * @return string  the SQL query string or null if the driver doesn't
-     *                  support the object type requested
-     *
-     * @access protected
-     * @see DB_common::getListOf()
-     */
-    function getSpecialQuery($type)
-    {
-        switch ($type) {
-            case 'tables':
-                return 'SELECT c.relname AS "Name"'
-                        . ' FROM pg_class c, pg_user u'
-                        . ' WHERE c.relowner = u.usesysid'
-                        . " AND c.relkind = 'r'"
-                        . ' AND NOT EXISTS'
-                        . ' (SELECT 1 FROM pg_views'
-                        . '  WHERE viewname = c.relname)'
-                        . " AND c.relname !~ '^(pg_|sql_)'"
-                        . ' UNION'
-                        . ' SELECT c.relname AS "Name"'
-                        . ' FROM pg_class c'
-                        . " WHERE c.relkind = 'r'"
-                        . ' AND NOT EXISTS'
-                        . ' (SELECT 1 FROM pg_views'
-                        . '  WHERE viewname = c.relname)'
-                        . ' AND NOT EXISTS'
-                        . ' (SELECT 1 FROM pg_user'
-                        . '  WHERE usesysid = c.relowner)'
-                        . " AND c.relname !~ '^pg_'";
-            case 'schema.tables':
-                return "SELECT schemaname || '.' || tablename"
-                        . ' AS "Name"'
-                        . ' FROM pg_catalog.pg_tables'
-                        . ' WHERE schemaname NOT IN'
-                        . " ('pg_catalog', 'information_schema', 'pg_toast')";
-            case 'schema.views':
-                return "SELECT schemaname || '.' || viewname from pg_views WHERE schemaname"
-                        . " NOT IN ('information_schema', 'pg_catalog')";
-            case 'views':
-                // Table cols: viewname | viewowner | definition
-                return 'SELECT viewname from pg_views WHERE schemaname'
-                        . " NOT IN ('information_schema', 'pg_catalog')";
-            case 'users':
-                // cols: usename |usesysid|usecreatedb|usetrace|usesuper|usecatupd|passwd  |valuntil
-                return 'SELECT usename FROM pg_user';
-            case 'databases':
-                return 'SELECT datname FROM pg_database';
-            case 'functions':
-            case 'procedures':
-                return 'SELECT proname FROM pg_proc WHERE proowner <> 1';
-            default:
-                return null;
-        }
-    }
-
-    // }}}
-
-}
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
-
-?>