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<?php/*** ADOdb Data Dictionary base class.** This file is part of ADOdb, a Database Abstraction Layer library for PHP.** @package ADOdb* @link https://adodb.org Project's web site and documentation* @link https://github.com/ADOdb/ADOdb Source code and issue tracker** The ADOdb Library is dual-licensed, released under both the BSD 3-Clause* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,* any later version. This means you can use it in proprietary products.* See the LICENSE.md file distributed with this source code for details.* @license BSD-3-Clause* @license LGPL-2.1-or-later** @copyright 2000-2013 John Lim* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community*/// security - hide pathsif (!defined('ADODB_DIR')) die();/*** Test script for parser*/function lens_ParseTest(){$str = "`zcol ACOL` NUMBER(32,2) DEFAULT 'The \"cow\" (and Jim''s dog) jumps over the moon' PRIMARY, INTI INT AUTO DEFAULT 0, zcol2\"afs ds";print "<p>$str</p>";$a= lens_ParseArgs($str);print "<pre>";print_r($a);print "</pre>";}if (!function_exists('ctype_alnum')) {function ctype_alnum($text) {return preg_match('/^[a-z0-9]*$/i', $text);}}//Lens_ParseTest();/**Parse arguments, treat "text" (text) and 'text' as quotation marks.To escape, use "" or '' or ))Will read in "abc def" sans quotes, as: abc defSame with 'abc def'.However if `abc def`, then will read in as `abc def`@param endstmtchar Character that indicates end of statement@param tokenchars Include the following characters in tokens apart from A-Z and 0-9@returns 2 dimensional array containing parsed tokens.*/function lens_ParseArgs($args,$endstmtchar=',',$tokenchars='_.-'){$pos = 0;$intoken = false;$stmtno = 0;$endquote = false;$tokens = array();$tokens[$stmtno] = array();$max = strlen($args);$quoted = false;$tokarr = array();while ($pos < $max) {$ch = substr($args,$pos,1);switch($ch) {case ' ':case "\t":case "\n":case "\r":if (!$quoted) {if ($intoken) {$intoken = false;$tokens[$stmtno][] = implode('',$tokarr);}break;}$tokarr[] = $ch;break;case '`':if ($intoken) $tokarr[] = $ch;case '(':case ')':case '"':case "'":if ($intoken) {if (empty($endquote)) {$tokens[$stmtno][] = implode('',$tokarr);if ($ch == '(') $endquote = ')';else $endquote = $ch;$quoted = true;$intoken = true;$tokarr = array();} else if ($endquote == $ch) {$ch2 = substr($args,$pos+1,1);if ($ch2 == $endquote) {$pos += 1;$tokarr[] = $ch2;} else {$quoted = false;$intoken = false;$tokens[$stmtno][] = implode('',$tokarr);$endquote = '';}} else$tokarr[] = $ch;}else {if ($ch == '(') $endquote = ')';else $endquote = $ch;$quoted = true;$intoken = true;$tokarr = array();if ($ch == '`') $tokarr[] = '`';}break;default:if (!$intoken) {if ($ch == $endstmtchar) {$stmtno += 1;$tokens[$stmtno] = array();break;}$intoken = true;$quoted = false;$endquote = false;$tokarr = array();}if ($quoted) $tokarr[] = $ch;else if (ctype_alnum($ch) || strpos($tokenchars,$ch) !== false) $tokarr[] = $ch;else {if ($ch == $endstmtchar) {$tokens[$stmtno][] = implode('',$tokarr);$stmtno += 1;$tokens[$stmtno] = array();$intoken = false;$tokarr = array();break;}$tokens[$stmtno][] = implode('',$tokarr);$tokens[$stmtno][] = $ch;$intoken = false;}}$pos += 1;}if ($intoken) $tokens[$stmtno][] = implode('',$tokarr);return $tokens;}class ADODB_DataDict {/** @var ADOConnection */var $connection;var $debug = false;var $dropTable = 'DROP TABLE %s';var $renameTable = 'RENAME TABLE %s TO %s';var $dropIndex = 'DROP INDEX %s';var $addCol = ' ADD';var $alterCol = ' ALTER COLUMN';var $dropCol = ' DROP COLUMN';var $renameColumn = 'ALTER TABLE %s RENAME COLUMN %s TO %s'; // table, old-column, new-column, column-definitions (not used by default)var $nameRegex = '\w';var $nameRegexBrackets = 'a-zA-Z0-9_\(\)';var $schema = false;var $serverInfo = array();var $autoIncrement = false;var $dataProvider;var $invalidResizeTypes4 = array('CLOB','BLOB','TEXT','DATE','TIME'); // for changeTableSQLvar $blobSize = 100; /// any varchar/char field this size or greater is treated as a blob/// in other words, we use a text area for editing./** @var string Uppercase driver name */var $upperName;/** Indicates whether a BLOB/CLOB field will allow a NOT NULL setting* The type is whatever is matched to an X or X2 or B type. We must* explicitly set the value in the driver to switch the behaviour on*/public $blobAllowsNotNull;/** Indicates whether a BLOB/CLOB field will allow a DEFAULT set* The type is whatever is matched to an X or X2 or B type. We must* explicitly set the value in the driver to switch the behaviour on*/public $blobAllowsDefaultValue;/*** @var string String to use to quote identifiers and names*/public $quote;function getCommentSQL($table,$col){return false;}function setCommentSQL($table,$col,$cmt){return false;}function metaTables(){if (!$this->connection->isConnected()) return array();return $this->connection->metaTables();}function metaColumns($tab, $upper=true, $schema=false){if (!$this->connection->isConnected()) return array();return $this->connection->metaColumns($this->tableName($tab), $upper, $schema);}function metaPrimaryKeys($tab,$owner=false,$intkey=false){if (!$this->connection->isConnected()) return array();return $this->connection->metaPrimaryKeys($this->tableName($tab), $owner, $intkey);}function metaIndexes($table, $primary = false, $owner = false){if (!$this->connection->isConnected()) return array();return $this->connection->metaIndexes($this->tableName($table), $primary, $owner);}function metaType($t,$len=-1,$fieldobj=false){static $typeMap = array('VARCHAR' => 'C','VARCHAR2' => 'C','CHAR' => 'C','C' => 'C','STRING' => 'C','NCHAR' => 'C','NVARCHAR' => 'C','VARYING' => 'C','BPCHAR' => 'C','CHARACTER' => 'C','INTERVAL' => 'C', # Postgres'MACADDR' => 'C', # postgres'VAR_STRING' => 'C', # mysql##'LONGCHAR' => 'X','TEXT' => 'X','NTEXT' => 'X','M' => 'X','X' => 'X','CLOB' => 'X','NCLOB' => 'X','LVARCHAR' => 'X',##'BLOB' => 'B','IMAGE' => 'B','BINARY' => 'B','VARBINARY' => 'B','LONGBINARY' => 'B','B' => 'B',##'YEAR' => 'D', // mysql'DATE' => 'D','D' => 'D',##'UNIQUEIDENTIFIER' => 'C', # MS SQL Server##'TIME' => 'T','TIMESTAMP' => 'T','DATETIME' => 'T','TIMESTAMPTZ' => 'T','SMALLDATETIME' => 'T','T' => 'T','TIMESTAMP WITHOUT TIME ZONE' => 'T', // postgresql##'BOOL' => 'L','BOOLEAN' => 'L','BIT' => 'L','L' => 'L',##'COUNTER' => 'R','R' => 'R','SERIAL' => 'R', // ifx'INT IDENTITY' => 'R',##'INT' => 'I','INT2' => 'I','INT4' => 'I','INT8' => 'I','INTEGER' => 'I','INTEGER UNSIGNED' => 'I','SHORT' => 'I','TINYINT' => 'I','SMALLINT' => 'I','I' => 'I',##'LONG' => 'N', // interbase is numeric, oci8 is blob'BIGINT' => 'N', // this is bigger than PHP 32-bit integers'DECIMAL' => 'N','DEC' => 'N','REAL' => 'N','DOUBLE' => 'N','DOUBLE PRECISION' => 'N','SMALLFLOAT' => 'N','FLOAT' => 'N','NUMBER' => 'N','NUM' => 'N','NUMERIC' => 'N','MONEY' => 'N',## informix 9.2'SQLINT' => 'I','SQLSERIAL' => 'I','SQLSMINT' => 'I','SQLSMFLOAT' => 'N','SQLFLOAT' => 'N','SQLMONEY' => 'N','SQLDECIMAL' => 'N','SQLDATE' => 'D','SQLVCHAR' => 'C','SQLCHAR' => 'C','SQLDTIME' => 'T','SQLINTERVAL' => 'N','SQLBYTES' => 'B','SQLTEXT' => 'X',## informix 10"SQLINT8" => 'I8',"SQLSERIAL8" => 'I8',"SQLNCHAR" => 'C',"SQLNVCHAR" => 'C',"SQLLVARCHAR" => 'X',"SQLBOOL" => 'L');if (!$this->connection->isConnected()) {$t = strtoupper($t);if (isset($typeMap[$t])) return $typeMap[$t];return ADODB_DEFAULT_METATYPE;}return $this->connection->metaType($t,$len,$fieldobj);}function nameQuote($name = NULL,$allowBrackets=false){if (!is_string($name)) {return false;}$name = trim($name);if ( !is_object($this->connection) ) {return $name;}$quote = $this->connection->nameQuote;// if name is of the form `name`, quote itif ( preg_match('/^`(.+)`$/', $name, $matches) ) {return $quote . $matches[1] . $quote;}// if name contains special characters, quote it$regex = ($allowBrackets) ? $this->nameRegexBrackets : $this->nameRegex;if ( !preg_match('/^[' . $regex . ']+$/', $name) ) {return $quote . $name . $quote;}return $name;}function tableName($name){if ( $this->schema ) {return $this->nameQuote($this->schema) .'.'. $this->nameQuote($name);}return $this->nameQuote($name);}// Executes the sql array returned by getTableSQL and getIndexSQLfunction executeSQLArray($sql, $continueOnError = true){$rez = 2;$conn = $this->connection;$saved = $conn->debug;foreach($sql as $line) {if ($this->debug) $conn->debug = true;$ok = $conn->execute($line);$conn->debug = $saved;if (!$ok) {if ($this->debug) ADOConnection::outp($conn->errorMsg());if (!$continueOnError) return 0;$rez = 1;}}return $rez;}/**Returns the actual type given a character code.C: varcharX: CLOB (character large object) or largest varchar size if CLOB is not supportedC2: Multibyte varcharX2: Multibyte CLOBB: BLOB (binary large object)D: DateT: Date-timeL: Integer field suitable for storing booleans (0 or 1)I: IntegerF: Floating point numberN: Numeric or decimal number*/function actualType($meta){$meta = strtoupper($meta);/** Add support for custom meta types. We do this* first, that allows us to override existing types*/if (isset($this->connection->customMetaTypes[$meta]))return $this->connection->customMetaTypes[$meta]['actual'];return $meta;}function createDatabase($dbname,$options=false){$options = $this->_options($options);$sql = array();$s = 'CREATE DATABASE ' . $this->nameQuote($dbname);if (isset($options[$this->upperName]))$s .= ' '.$options[$this->upperName];$sql[] = $s;return $sql;}/*Generates the SQL to create index. Returns an array of sql strings.*/function createIndexSQL($idxname, $tabname, $flds, $idxoptions = false){if (!is_array($flds)) {$flds = explode(',',$flds);}foreach($flds as $key => $fld) {# some indexes can use partial fields, eg. index first 32 chars of "name" with NAME(32)$flds[$key] = $this->nameQuote($fld,$allowBrackets=true);}return $this->_indexSQL($this->nameQuote($idxname), $this->tableName($tabname), $flds, $this->_options($idxoptions));}function dropIndexSQL ($idxname, $tabname = NULL){return array(sprintf($this->dropIndex, $this->nameQuote($idxname), $this->tableName($tabname)));}function setSchema($schema){$this->schema = $schema;}function addColumnSQL($tabname, $flds){$tabname = $this->tableName($tabname);$sql = array();list($lines,$pkey,$idxs) = $this->_genFields($flds);// genfields can return FALSE at timesif ($lines == null) $lines = array();$alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' ';foreach($lines as $v) {$sql[] = $alter . $v;}if (is_array($idxs)) {foreach($idxs as $idx => $idxdef) {$sql_idxs = $this->createIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);$sql = array_merge($sql, $sql_idxs);}}return $sql;}/*** Change the definition of one column** As some DBMs can't do that on their own, you need to supply the complete definition of the new table,* to allow recreating the table and copying the content over to the new table* @param string $tabname table-name* @param string $flds column-name and type for the changed column* @param string $tableflds='' complete definition of the new table, eg. for postgres, default ''* @param array|string $tableoptions='' options for the new table see createTableSQL, default ''* @return array with SQL strings*/function alterColumnSQL($tabname, $flds, $tableflds='',$tableoptions=''){$tabname = $this->tableName($tabname);$sql = array();list($lines,$pkey,$idxs) = $this->_genFields($flds);// genfields can return FALSE at timesif ($lines == null) $lines = array();$alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' ';foreach($lines as $v) {$sql[] = $alter . $v;}if (is_array($idxs)) {foreach($idxs as $idx => $idxdef) {$sql_idxs = $this->createIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);$sql = array_merge($sql, $sql_idxs);}}return $sql;}/*** Rename one column** Some DBMs can only do this together with changeing the type of the column (even if that stays the same, eg. mysql)* @param string $tabname table-name* @param string $oldcolumn column-name to be renamed* @param string $newcolumn new column-name* @param string $flds='' complete column-definition-string like for addColumnSQL, only used by mysql atm., default=''* @return array with SQL strings*/function renameColumnSQL($tabname,$oldcolumn,$newcolumn,$flds=''){$tabname = $this->tableName($tabname);if ($flds) {list($lines,$pkey,$idxs) = $this->_genFields($flds);// genfields can return FALSE at timesif ($lines == null) $lines = array();$first = current($lines);list(,$column_def) = preg_split("/[\t ]+/",$first,2);}return array(sprintf($this->renameColumn,$tabname,$this->nameQuote($oldcolumn),$this->nameQuote($newcolumn),$column_def));}/*** Drop one column** Some DBM's can't do that on their own, you need to supply the complete definition of the new table,* to allow, recreating the table and copying the content over to the new table* @param string $tabname table-name* @param string $flds column-name and type for the changed column* @param string $tableflds='' complete definition of the new table, eg. for postgres, default ''* @param array|string $tableoptions='' options for the new table see createTableSQL, default ''* @return array with SQL strings*/function dropColumnSQL($tabname, $flds, $tableflds='',$tableoptions=''){$tabname = $this->tableName($tabname);if (!is_array($flds)) $flds = explode(',',$flds);$sql = array();$alter = 'ALTER TABLE ' . $tabname . $this->dropCol . ' ';foreach($flds as $v) {$sql[] = $alter . $this->nameQuote($v);}return $sql;}function dropTableSQL($tabname){return array (sprintf($this->dropTable, $this->tableName($tabname)));}function renameTableSQL($tabname,$newname){return array (sprintf($this->renameTable, $this->tableName($tabname),$this->tableName($newname)));}/**Generate the SQL to create table. Returns an array of sql strings.*/function createTableSQL($tabname, $flds, $tableoptions=array()){list($lines,$pkey,$idxs) = $this->_genFields($flds, true);// genfields can return FALSE at timesif ($lines == null) $lines = array();$taboptions = $this->_options($tableoptions);$tabname = $this->tableName($tabname);$sql = $this->_tableSQL($tabname,$lines,$pkey,$taboptions);// ggiunta - 2006/10/12 - KLUDGE:// if we are on autoincrement, and table options includes REPLACE, the// autoincrement sequence has already been dropped on table creation sql, so// we avoid passing REPLACE to trigger creation code. This prevents// creating sql that double-drops the sequenceif ($this->autoIncrement && isset($taboptions['REPLACE']))unset($taboptions['REPLACE']);$tsql = $this->_triggers($tabname,$taboptions);foreach($tsql as $s) $sql[] = $s;if (is_array($idxs)) {foreach($idxs as $idx => $idxdef) {$sql_idxs = $this->createIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);$sql = array_merge($sql, $sql_idxs);}}return $sql;}function _genFields($flds,$widespacing=false){if (is_string($flds)) {$padding = ' ';$txt = $flds.$padding;$flds = array();$flds0 = lens_ParseArgs($txt,',');$hasparam = false;foreach($flds0 as $f0) {$f1 = array();foreach($f0 as $token) {switch (strtoupper($token)) {case 'INDEX':$f1['INDEX'] = '';// fall through intentionallycase 'CONSTRAINT':case 'DEFAULT':$hasparam = $token;break;default:if ($hasparam) $f1[$hasparam] = $token;else $f1[] = $token;$hasparam = false;break;}}// 'index' token without a name means single column index: name it after columnif (array_key_exists('INDEX', $f1) && $f1['INDEX'] == '') {$f1['INDEX'] = isset($f0['NAME']) ? $f0['NAME'] : $f0[0];// check if column name used to create an index name was quotedif (($f1['INDEX'][0] == '"' || $f1['INDEX'][0] == "'" || $f1['INDEX'][0] == "`") &&($f1['INDEX'][0] == substr($f1['INDEX'], -1))) {$f1['INDEX'] = $f1['INDEX'][0].'idx_'.substr($f1['INDEX'], 1, -1).$f1['INDEX'][0];}else$f1['INDEX'] = 'idx_'.$f1['INDEX'];}// reset it, so we don't get next field 1st token as INDEX...$hasparam = false;$flds[] = $f1;}}$this->autoIncrement = false;$lines = array();$pkey = array();$idxs = array();foreach($flds as $fld) {if (is_array($fld))$fld = array_change_key_case($fld,CASE_UPPER);$fname = false;$fdefault = false;$fautoinc = false;$ftype = false;$fsize = false;$fprec = false;$fprimary = false;$fnoquote = false;$fdefts = false;$fdefdate = false;$fconstraint = false;$fnotnull = false;$funsigned = false;$findex = '';$funiqueindex = false;$fOptions = array();//-----------------// Parse attributesforeach($fld as $attr => $v) {if ($attr == 2 && is_numeric($v))$attr = 'SIZE';elseif ($attr == 2 && strtoupper($ftype) == 'ENUM')$attr = 'ENUM';else if (is_numeric($attr) && $attr > 1 && !is_numeric($v))$attr = strtoupper($v);switch($attr) {case '0':case 'NAME': $fname = $v; break;case '1':case 'TYPE':$ty = $v;$ftype = $this->actualType(strtoupper($v));break;case 'SIZE':$dotat = strpos($v,'.');if ($dotat === false)$dotat = strpos($v,',');if ($dotat === false)$fsize = $v;else {$fsize = substr($v,0,$dotat);$fprec = substr($v,$dotat+1);}break;case 'UNSIGNED': $funsigned = true; break;case 'AUTOINCREMENT':case 'AUTO': $fautoinc = true; $fnotnull = true; break;case 'KEY':// a primary key col can be non unique in itself (if key spans many cols...)case 'PRIMARY': $fprimary = $v; $fnotnull = true; /*$funiqueindex = true;*/ break;case 'DEF':case 'DEFAULT': $fdefault = $v; break;case 'NOTNULL': $fnotnull = $v; break;case 'NOQUOTE': $fnoquote = $v; break;case 'DEFDATE': $fdefdate = $v; break;case 'DEFTIMESTAMP': $fdefts = $v; break;case 'CONSTRAINT': $fconstraint = $v; break;// let INDEX keyword create a 'very standard' index on columncase 'INDEX': $findex = $v; break;case 'UNIQUE': $funiqueindex = true; break;case 'ENUM':$fOptions['ENUM'] = $v; break;} //switch} // foreach $fld//--------------------// VALIDATE FIELD INFOif (!strlen($fname)) {if ($this->debug) ADOConnection::outp("Undefined NAME");return false;}$fid = strtoupper(preg_replace('/^`(.+)`$/', '$1', $fname));$fname = $this->nameQuote($fname);if (!strlen($ftype)) {if ($this->debug) ADOConnection::outp("Undefined TYPE for field '$fname'");return false;} else {$ftype = strtoupper($ftype);}$ftype = $this->_getSize($ftype, $ty, $fsize, $fprec, $fOptions);if (($ty == 'X' || $ty == 'X2' || $ty == 'XL' || $ty == 'B') && !$this->blobAllowsNotNull)/** some blob types do not accept nulls, so we override the* previously defined value*/$fnotnull = false;if ($fprimary)$pkey[] = $fname;if (($ty == 'X' || $ty == 'X2' || $ty == 'XL' || $ty == 'B') && !$this->blobAllowsDefaultValue)/** some databases do not allow blobs to have defaults, so we* override the previously defined value*/$fdefault = false;// build list of indexesif ($findex != '') {if (array_key_exists($findex, $idxs)) {$idxs[$findex]['cols'][] = ($fname);if (in_array('UNIQUE', $idxs[$findex]['opts']) != $funiqueindex) {if ($this->debug) ADOConnection::outp("Index $findex defined once UNIQUE and once not");}if ($funiqueindex && !in_array('UNIQUE', $idxs[$findex]['opts']))$idxs[$findex]['opts'][] = 'UNIQUE';}else{$idxs[$findex] = array();$idxs[$findex]['cols'] = array($fname);if ($funiqueindex)$idxs[$findex]['opts'] = array('UNIQUE');else$idxs[$findex]['opts'] = array();}}//--------------------// CONSTRUCT FIELD SQLif ($fdefts) {if (substr($this->connection->databaseType,0,5) == 'mysql') {$ftype = 'TIMESTAMP';} else {$fdefault = $this->connection->sysTimeStamp;}} else if ($fdefdate) {if (substr($this->connection->databaseType,0,5) == 'mysql') {$ftype = 'TIMESTAMP';} else {$fdefault = $this->connection->sysDate;}} else if ($fdefault !== false && !$fnoquote) {if ($ty == 'C' or $ty == 'X' or( substr($fdefault,0,1) != "'" && !is_numeric($fdefault))) {if (($ty == 'D' || $ty == 'T') && strtolower($fdefault) != 'null') {// convert default date into database-aware codeif ($ty == 'T'){$fdefault = $this->connection->dbTimeStamp($fdefault);}else{$fdefault = $this->connection->dbDate($fdefault);}}elseif (strlen($fdefault) != 1 && substr($fdefault,0,1) == ' ' && substr($fdefault,strlen($fdefault)-1) == ' ')$fdefault = trim($fdefault);else if (strtolower($fdefault) != 'null')$fdefault = $this->connection->qstr($fdefault);}}$suffix = $this->_createSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned);// add index creationif ($widespacing) $fname = str_pad($fname,24);// check for field names appearing twiceif (array_key_exists($fid, $lines)) {ADOConnection::outp("Field '$fname' defined twice");}$lines[$fid] = $fname.' '.$ftype.$suffix;if ($fautoinc) $this->autoIncrement = true;} // foreach $fldsreturn array($lines,$pkey,$idxs);}/**GENERATE THE SIZE PART OF THE DATATYPE$ftype is the actual type$ty is the type defined originally in the DDL*/function _getSize($ftype, $ty, $fsize, $fprec, $options=false){if (strlen($fsize) && $ty != 'X' && $ty != 'B' && strpos($ftype,'(') === false) {$ftype .= "(".$fsize;if (strlen($fprec)) $ftype .= ",".$fprec;$ftype .= ')';}/** Handle additional options*/if (is_array($options)){foreach($options as $type=>$value){switch ($type){case 'ENUM':$ftype .= '(' . $value . ')';break;default:}}}return $ftype;}// return string must begin with spacefunction _createSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned){$suffix = '';if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";if ($fnotnull) $suffix .= ' NOT NULL';if ($fconstraint) $suffix .= ' '.$fconstraint;return $suffix;}function _indexSQL($idxname, $tabname, $flds, $idxoptions){$sql = array();if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {$sql[] = sprintf ($this->dropIndex, $idxname);if ( isset($idxoptions['DROP']) )return $sql;}if ( empty ($flds) ) {return $sql;}$unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : '';$s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' ';if ( isset($idxoptions[$this->upperName]) )$s .= $idxoptions[$this->upperName];if ( is_array($flds) )$flds = implode(', ',$flds);$s .= '(' . $flds . ')';$sql[] = $s;return $sql;}function _dropAutoIncrement($tabname){return false;}function _tableSQL($tabname,$lines,$pkey,$tableoptions){$sql = array();if (isset($tableoptions['REPLACE']) || isset ($tableoptions['DROP'])) {$sql[] = sprintf($this->dropTable,$tabname);if ($this->autoIncrement) {$sInc = $this->_dropAutoIncrement($tabname);if ($sInc) $sql[] = $sInc;}if ( isset ($tableoptions['DROP']) ) {return $sql;}}$s = "CREATE TABLE $tabname (\n";$s .= implode(",\n", $lines);if (sizeof($pkey)>0) {$s .= ",\n PRIMARY KEY (";$s .= implode(", ",$pkey).")";}if (isset($tableoptions['CONSTRAINTS']))$s .= "\n".$tableoptions['CONSTRAINTS'];if (isset($tableoptions[$this->upperName.'_CONSTRAINTS']))$s .= "\n".$tableoptions[$this->upperName.'_CONSTRAINTS'];$s .= "\n)";if (isset($tableoptions[$this->upperName])) $s .= $tableoptions[$this->upperName];$sql[] = $s;return $sql;}/**GENERATE TRIGGERS IF NEEDEDused when table has auto-incrementing field that is emulated using triggers*/function _triggers($tabname,$taboptions){return array();}/**Sanitize options, so that array elements with no keys are promoted to keys*/function _options($opts){if (!is_array($opts)) return array();$newopts = array();foreach($opts as $k => $v) {if (is_numeric($k)) $newopts[strtoupper($v)] = $v;else $newopts[strtoupper($k)] = $v;}return $newopts;}function _getSizePrec($size){$fsize = false;$fprec = false;$dotat = strpos($size,'.');if ($dotat === false) $dotat = strpos($size,',');if ($dotat === false) $fsize = $size;else {$fsize = substr($size,0,$dotat);$fprec = substr($size,$dotat+1);}return array($fsize, $fprec);}/*** This function changes/adds new fields to your table.** You don't have to know if the col is new or not. It will check on its own.** @param string $tablename* @param string $flds* @param string[] $tableoptions* @param bool $dropOldFlds** @return string[] Array of SQL Commands*/function changeTableSQL($tablename, $flds, $tableoptions = false, $dropOldFlds=false){global $ADODB_FETCH_MODE;$save = $ADODB_FETCH_MODE;$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;if ($this->connection->fetchMode !== false) $savem = $this->connection->setFetchMode(false);// check table exists$save_handler = $this->connection->raiseErrorFn;$this->connection->raiseErrorFn = '';$cols = $this->metaColumns($tablename);$this->connection->raiseErrorFn = $save_handler;if (isset($savem)) $this->connection->setFetchMode($savem);$ADODB_FETCH_MODE = $save;if ( empty($cols)) {return $this->createTableSQL($tablename, $flds, $tableoptions);}if (is_array($flds)) {// Cycle through the update fields, comparing// existing fields to fields to update.// if the Metatype and size is exactly the// same, ignore - by Mark Newham$holdflds = array();foreach($flds as $k=>$v) {if ( isset($cols[$k]) && is_object($cols[$k]) ) {// If already not allowing nulls, then don't change$obj = $cols[$k];if (isset($obj->not_null) && $obj->not_null)$v = str_replace('NOT NULL','',$v);if (isset($obj->auto_increment) && $obj->auto_increment && empty($v['AUTOINCREMENT']))$v = str_replace('AUTOINCREMENT','',$v);$c = $cols[$k];$ml = $c->max_length;$mt = $this->metaType($c->type,$ml);if (isset($c->scale)) $sc = $c->scale;else $sc = 99; // always force change if scale not known.if ($sc == -1) $sc = false;list($fsize, $fprec) = $this->_getSizePrec($v['SIZE']);if ($ml == -1) $ml = '';if ($mt == 'X') $ml = $v['SIZE'];if (($mt != $v['TYPE']) || ($ml != $fsize || $sc != $fprec) || (isset($v['AUTOINCREMENT']) && $v['AUTOINCREMENT'] != $obj->auto_increment)) {$holdflds[$k] = $v;}} else {$holdflds[$k] = $v;}}$flds = $holdflds;}$sql = $this->alterColumnSql($tablename, $flds);if ($dropOldFlds) {foreach ($cols as $id => $v) {if (!isset($lines[$id])) {$sql[] = $this->dropColumnSQL($tablename, $flds);}}}return $sql;}} // class