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725 lines
18 KiB
PHP
725 lines
18 KiB
PHP
<?php
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/**
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V4.52 10 Aug 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
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Released under both BSD license and Lesser GPL library license.
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Whenever there is any discrepancy between the two licenses,
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the BSD license will take precedence.
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Set tabs to 4 for best viewing.
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DOCUMENTATION:
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See adodb/tests/test-datadict.php for docs and examples.
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*/
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/*
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Test script for parser
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*/
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// security - hide paths
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if (!defined('ADODB_DIR')) die();
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function Lens_ParseTest()
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{
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$str = "`zcol ACOL` NUMBER(32,2) DEFAULT 'The \"cow\" (and Jim''s dog) jumps over the moon' PRIMARY, INTI INT AUTO DEFAULT 0";
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print "<p>$str</p>";
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$a= Lens_ParseArgs($str);
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print "<pre>";
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print_r($a);
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print "</pre>";
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}
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if (!function_exists('ctype_alnum')) {
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function ctype_alnum($text) {
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return preg_match('/^[a-z0-9]*$/i', $text);
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}
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}
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//Lens_ParseTest();
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/**
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Parse arguments, treat "text" (text) and 'text' as quotation marks.
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To escape, use "" or '' or ))
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Will read in "abc def" sans quotes, as: abc def
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Same with 'abc def'.
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However if `abc def`, then will read in as `abc def`
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@param endstmtchar Character that indicates end of statement
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@param tokenchars Include the following characters in tokens apart from A-Z and 0-9
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@returns 2 dimensional array containing parsed tokens.
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*/
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function Lens_ParseArgs($args,$endstmtchar=',',$tokenchars='_.-')
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{
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$pos = 0;
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$intoken = false;
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$stmtno = 0;
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$endquote = false;
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$tokens = array();
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$tokens[$stmtno] = array();
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$max = strlen($args);
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$quoted = false;
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while ($pos < $max) {
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$ch = substr($args,$pos,1);
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switch($ch) {
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case ' ':
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case "\t":
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case "\n":
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case "\r":
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if (!$quoted) {
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if ($intoken) {
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$intoken = false;
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$tokens[$stmtno][] = implode('',$tokarr);
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}
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break;
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}
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$tokarr[] = $ch;
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break;
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case '`':
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if ($intoken) $tokarr[] = $ch;
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case '(':
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case ')':
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case '"':
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case "'":
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if ($intoken) {
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if (empty($endquote)) {
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$tokens[$stmtno][] = implode('',$tokarr);
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if ($ch == '(') $endquote = ')';
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else $endquote = $ch;
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$quoted = true;
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$intoken = true;
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$tokarr = array();
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} else if ($endquote == $ch) {
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$ch2 = substr($args,$pos+1,1);
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if ($ch2 == $endquote) {
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$pos += 1;
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$tokarr[] = $ch2;
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} else {
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$quoted = false;
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$intoken = false;
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$tokens[$stmtno][] = implode('',$tokarr);
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$endquote = '';
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}
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} else
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$tokarr[] = $ch;
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}else {
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if ($ch == '(') $endquote = ')';
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else $endquote = $ch;
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$quoted = true;
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$intoken = true;
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$tokarr = array();
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if ($ch == '`') $tokarr[] = '`';
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}
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break;
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default:
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if (!$intoken) {
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if ($ch == $endstmtchar) {
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$stmtno += 1;
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$tokens[$stmtno] = array();
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break;
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}
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$intoken = true;
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$quoted = false;
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$endquote = false;
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$tokarr = array();
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}
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if ($quoted) $tokarr[] = $ch;
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else if (ctype_alnum($ch) || strpos($tokenchars,$ch) !== false) $tokarr[] = $ch;
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else {
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if ($ch == $endstmtchar) {
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$tokens[$stmtno][] = implode('',$tokarr);
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$stmtno += 1;
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$tokens[$stmtno] = array();
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$intoken = false;
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$tokarr = array();
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break;
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}
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$tokens[$stmtno][] = implode('',$tokarr);
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$tokens[$stmtno][] = $ch;
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$intoken = false;
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}
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}
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$pos += 1;
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}
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return $tokens;
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}
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class ADODB_DataDict {
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var $connection;
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var $debug = false;
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var $dropTable = 'DROP TABLE %s';
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var $renameTable = 'RENAME TABLE %s TO %s';
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var $dropIndex = 'DROP INDEX %s';
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var $addCol = ' ADD';
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var $alterCol = ' ALTER COLUMN';
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var $dropCol = ' DROP COLUMN';
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var $renameColumn = 'ALTER TABLE %s RENAME COLUMN %s TO %s'; // table, old-column, new-column, column-definitions (not used by default)
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var $nameRegex = '\w';
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var $schema = false;
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var $serverInfo = array();
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var $autoIncrement = false;
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var $dataProvider;
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var $blobSize = 100; /// any varchar/char field this size or greater is treated as a blob
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/// in other words, we use a text area for editting.
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function GetCommentSQL($table,$col)
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{
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return false;
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}
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function SetCommentSQL($table,$col,$cmt)
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{
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return false;
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}
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function &MetaTables()
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{
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return $this->connection->MetaTables();
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}
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function &MetaColumns($tab, $upper=true, $schema=false)
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{
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return $this->connection->MetaColumns($this->TableName($tab), $upper, $schema);
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}
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function &MetaPrimaryKeys($tab,$owner=false,$intkey=false)
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{
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return $this->connection->MetaPrimaryKeys($this->TableName($tab), $owner, $intkey);
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}
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function &MetaIndexes($table, $primary = false, $owner = false)
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{
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return $this->connection->MetaIndexes($this->TableName($table), $primary, $owner);
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}
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function MetaType($t,$len=-1,$fieldobj=false)
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{
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return ADORecordSet::MetaType($t,$len,$fieldobj);
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}
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function NameQuote($name = NULL)
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{
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if (!is_string($name)) {
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return FALSE;
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}
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$name = trim($name);
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if ( !is_object($this->connection) ) {
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return $name;
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}
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$quote = $this->connection->nameQuote;
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// if name is of the form `name`, quote it
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if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
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return $quote . $matches[1] . $quote;
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}
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// if name contains special characters, quote it
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if ( !preg_match('/^[' . $this->nameRegex . ']+$/', $name) ) {
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return $quote . $name . $quote;
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}
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return $name;
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}
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function TableName($name)
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{
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if ( $this->schema ) {
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return $this->NameQuote($this->schema) .'.'. $this->NameQuote($name);
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}
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return $this->NameQuote($name);
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}
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// Executes the sql array returned by GetTableSQL and GetIndexSQL
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function ExecuteSQLArray($sql, $continueOnError = true)
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{
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$rez = 2;
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$conn = &$this->connection;
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$saved = $conn->debug;
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foreach($sql as $line) {
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if ($this->debug) $conn->debug = true;
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$ok = $conn->Execute($line);
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$conn->debug = $saved;
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if (!$ok) {
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if ($this->debug) ADOConnection::outp($conn->ErrorMsg());
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if (!$continueOnError) return 0;
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$rez = 1;
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}
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}
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return $rez;
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}
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/*
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Returns the actual type given a character code.
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C: varchar
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X: CLOB (character large object) or largest varchar size if CLOB is not supported
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C2: Multibyte varchar
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X2: Multibyte CLOB
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B: BLOB (binary large object)
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D: Date
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T: Date-time
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L: Integer field suitable for storing booleans (0 or 1)
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I: Integer
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F: Floating point number
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N: Numeric or decimal number
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*/
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function ActualType($meta)
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{
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return $meta;
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}
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function CreateDatabase($dbname,$options=false)
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{
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$options = $this->_Options($options);
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$sql = array();
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$s = 'CREATE DATABASE ' . $this->NameQuote($dbname);
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if (isset($options[$this->upperName]))
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$s .= ' '.$options[$this->upperName];
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$sql[] = $s;
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return $sql;
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}
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/*
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Generates the SQL to create index. Returns an array of sql strings.
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*/
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function CreateIndexSQL($idxname, $tabname, $flds, $idxoptions = false)
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{
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if (!is_array($flds)) {
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$flds = explode(',',$flds);
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}
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foreach($flds as $key => $fld) {
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$flds[$key] = $this->NameQuote($fld);
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}
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return $this->_IndexSQL($this->NameQuote($idxname), $this->TableName($tabname), $flds, $this->_Options($idxoptions));
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}
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function DropIndexSQL ($idxname, $tabname = NULL)
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{
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return array(sprintf($this->dropIndex, $this->NameQuote($idxname), $this->TableName($tabname)));
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}
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function SetSchema($schema)
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{
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$this->schema = $schema;
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}
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function AddColumnSQL($tabname, $flds)
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{
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$tabname = $this->TableName ($tabname);
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$sql = array();
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list($lines,$pkey) = $this->_GenFields($flds);
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$alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' ';
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foreach($lines as $v) {
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$sql[] = $alter . $v;
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}
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return $sql;
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}
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/**
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* Change the definition of one column
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*
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* As some DBM's can't do that on there own, you need to supply the complete defintion of the new table,
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* to allow, recreating the table and copying the content over to the new table
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* @param string $tabname table-name
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* @param string $flds column-name and type for the changed column
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* @param string $tableflds='' complete defintion of the new table, eg. for postgres, default ''
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* @param array/string $tableoptions='' options for the new table see CreateTableSQL, default ''
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* @return array with SQL strings
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*/
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function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
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{
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$tabname = $this->TableName ($tabname);
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$sql = array();
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list($lines,$pkey) = $this->_GenFields($flds);
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$alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' ';
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foreach($lines as $v) {
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$sql[] = $alter . $v;
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}
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return $sql;
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}
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/**
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* Rename one column
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*
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* Some DBM's can only do this together with changeing the type of the column (even if that stays the same, eg. mysql)
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* @param string $tabname table-name
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* @param string $oldcolumn column-name to be renamed
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* @param string $newcolumn new column-name
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* @param string $flds='' complete column-defintion-string like for AddColumnSQL, only used by mysql atm., default=''
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* @return array with SQL strings
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*/
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function RenameColumnSQL($tabname,$oldcolumn,$newcolumn,$flds='')
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{
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$tabname = $this->TableName ($tabname);
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if ($flds) {
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list($lines,$pkey) = $this->_GenFields($flds);
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list(,$first) = each($lines);
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list(,$column_def) = split("[\t ]+",$first,2);
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}
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return array(sprintf($this->renameColumn,$tabname,$this->NameQuote($oldcolumn),$this->NameQuote($newcolumn),$column_def));
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}
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/**
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* Drop one column
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*
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* Some DBM's can't do that on there own, you need to supply the complete defintion of the new table,
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* to allow, recreating the table and copying the content over to the new table
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* @param string $tabname table-name
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* @param string $flds column-name and type for the changed column
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* @param string $tableflds='' complete defintion of the new table, eg. for postgres, default ''
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* @param array/string $tableoptions='' options for the new table see CreateTableSQL, default ''
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* @return array with SQL strings
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*/
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function DropColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
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{
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$tabname = $this->TableName ($tabname);
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if (!is_array($flds)) $flds = explode(',',$flds);
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$sql = array();
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$alter = 'ALTER TABLE ' . $tabname . $this->dropCol . ' ';
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foreach($flds as $v) {
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$sql[] = $alter . $this->NameQuote($v);
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}
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return $sql;
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}
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function DropTableSQL($tabname)
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{
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return array (sprintf($this->dropTable, $this->TableName($tabname)));
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}
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function RenameTableSQL($tabname,$newname)
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{
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return array (sprintf($this->renameTable, $this->TableName($tabname),$this->TableName($newname)));
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}
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/*
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Generate the SQL to create table. Returns an array of sql strings.
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*/
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function CreateTableSQL($tabname, $flds, $tableoptions=false)
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{
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if (!$tableoptions) $tableoptions = array();
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list($lines,$pkey) = $this->_GenFields($flds);
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$taboptions = $this->_Options($tableoptions);
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$tabname = $this->TableName ($tabname);
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$sql = $this->_TableSQL($tabname,$lines,$pkey,$taboptions);
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$tsql = $this->_Triggers($tabname,$taboptions);
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foreach($tsql as $s) $sql[] = $s;
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return $sql;
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}
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function _GenFields($flds)
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{
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if (is_string($flds)) {
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$padding = ' ';
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$txt = $flds.$padding;
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$flds = array();
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$flds0 = Lens_ParseArgs($txt,',');
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$hasparam = false;
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foreach($flds0 as $f0) {
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$f1 = array();
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foreach($f0 as $token) {
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switch (strtoupper($token)) {
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case 'CONSTRAINT':
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case 'DEFAULT':
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$hasparam = $token;
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break;
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default:
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if ($hasparam) $f1[$hasparam] = $token;
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else $f1[] = $token;
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$hasparam = false;
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break;
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}
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}
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$flds[] = $f1;
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}
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}
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$this->autoIncrement = false;
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$lines = array();
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$pkey = array();
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foreach($flds as $fld) {
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$fld = _array_change_key_case($fld);
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$fname = false;
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$fdefault = false;
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$fautoinc = false;
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$ftype = false;
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$fsize = false;
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$fprec = false;
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$fprimary = false;
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$fnoquote = false;
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$fdefts = false;
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$fdefdate = false;
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$fconstraint = false;
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$fnotnull = false;
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$funsigned = false;
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//-----------------
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// Parse attributes
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foreach($fld as $attr => $v) {
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if ($attr == 2 && is_numeric($v)) $attr = 'SIZE';
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else if (is_numeric($attr) && $attr > 1 && !is_numeric($v)) $attr = strtoupper($v);
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switch($attr) {
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case '0':
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case 'NAME': $fname = $v; break;
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case '1':
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case 'TYPE': $ty = $v; $ftype = $this->ActualType(strtoupper($v)); break;
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case 'SIZE':
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$dotat = strpos($v,'.'); if ($dotat === false) $dotat = strpos($v,',');
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if ($dotat === false) $fsize = $v;
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else {
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$fsize = substr($v,0,$dotat);
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$fprec = substr($v,$dotat+1);
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}
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break;
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case 'UNSIGNED': $funsigned = true; break;
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case 'AUTOINCREMENT':
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case 'AUTO': $fautoinc = true; $fnotnull = true; break;
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case 'KEY':
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case 'PRIMARY': $fprimary = $v; $fnotnull = true; break;
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case 'DEF':
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case 'DEFAULT': $fdefault = $v; break;
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case 'NOTNULL': $fnotnull = $v; break;
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case 'NOQUOTE': $fnoquote = $v; break;
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case 'DEFDATE': $fdefdate = $v; break;
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case 'DEFTIMESTAMP': $fdefts = $v; break;
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case 'CONSTRAINT': $fconstraint = $v; break;
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} //switch
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} // foreach $fld
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//--------------------
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// VALIDATE FIELD INFO
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if (!strlen($fname)) {
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if ($this->debug) ADOConnection::outp("Undefined NAME");
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return false;
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}
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$fid = strtoupper(preg_replace('/^`(.+)`$/', '$1', $fname));
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$fname = $this->NameQuote($fname);
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if (!strlen($ftype)) {
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if ($this->debug) ADOConnection::outp("Undefined TYPE for field '$fname'");
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return false;
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} else {
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$ftype = strtoupper($ftype);
|
|
}
|
|
|
|
$ftype = $this->_GetSize($ftype, $ty, $fsize, $fprec);
|
|
|
|
if ($ty == 'X' || $ty == 'X2' || $ty == 'B') $fnotnull = false; // some blob types do not accept nulls
|
|
|
|
if ($fprimary) $pkey[] = $fname;
|
|
|
|
// some databases do not allow blobs to have defaults
|
|
if ($ty == 'X') $fdefault = false;
|
|
|
|
//--------------------
|
|
// CONSTRUCT FIELD SQL
|
|
if ($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 = $this->connection->sysDate;
|
|
}
|
|
} else if (strlen($fdefault) && !$fnoquote)
|
|
if ($ty == 'C' or $ty == 'X' or
|
|
( substr($fdefault,0,1) != "'" && !is_numeric($fdefault)))
|
|
if (strlen($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);
|
|
|
|
$fname = str_pad($fname,16);
|
|
$lines[$fid] = $fname.' '.$ftype.$suffix;
|
|
|
|
if ($fautoinc) $this->autoIncrement = true;
|
|
} // foreach $flds
|
|
|
|
return array($lines,$pkey);
|
|
}
|
|
/*
|
|
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, $fprec)
|
|
{
|
|
if (strlen($fsize) && $ty != 'X' && $ty != 'B' && strpos($ftype,'(') === false) {
|
|
$ftype .= "(".$fsize;
|
|
if (strlen($fprec)) $ftype .= ",".$fprec;
|
|
$ftype .= ')';
|
|
}
|
|
return $ftype;
|
|
}
|
|
|
|
|
|
// return string must begin with space
|
|
function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint)
|
|
{
|
|
$suffix = '';
|
|
if (strlen($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 $sql;
|
|
}
|
|
|
|
/*
|
|
GENERATE TRIGGERS IF NEEDED
|
|
used when table has auto-incrementing field that is emulated using triggers
|
|
*/
|
|
function _Triggers($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 $newopts;
|
|
}
|
|
|
|
/*
|
|
"Florian Buzin [ easywe ]" <florian.buzin@easywe.de>
|
|
|
|
This function changes/adds new fields to your table. You don't
|
|
have to know if the col is new or not. It will check on its own.
|
|
*/
|
|
function ChangeTableSQL($tablename, $flds, $tableoptions = false)
|
|
{
|
|
// check table exists
|
|
$cols = &$this->MetaColumns($tablename);
|
|
if ( empty($cols)) {
|
|
return $this->CreateTableSQL($tablename, $flds, $tableoptions);
|
|
}
|
|
|
|
// already exists, alter table instead
|
|
list($lines,$pkey) = $this->_GenFields($flds);
|
|
$alter = 'ALTER TABLE ' . $this->TableName($tablename);
|
|
$sql = array();
|
|
|
|
foreach ( $lines as $id => $v ) {
|
|
if ( isset($cols[$id]) && is_object($cols[$id]) ) {
|
|
$sql[] = $alter . $this->alterCol . ' ' . $v;
|
|
} else {
|
|
$sql[] = $alter . $this->addCol . ' ' . $v;
|
|
}
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
} // class
|
|
?>
|