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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith |
// | All rights reserved. |
// +----------------------------------------------------------------------+
// | MDB is a merge of PEAR DB and Metabases that provides a unified DB |
// | API as well as database abstraction for PHP applications. |
// | This LICENSE is in the BSD license style. |
// | |
// | Redistribution and use in source and binary forms, with or without |
// | modification, are permitted provided that the following conditions |
// | are met: |
// | |
// | Redistributions of source code must retain the above copyright |
// | notice, this list of conditions and the following disclaimer. |
// | |
// | Redistributions in binary form must reproduce the above copyright |
// | notice, this list of conditions and the following disclaimer in the |
// | documentation and/or other materials provided with the distribution. |
// | |
// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
// | Lukas Smith nor the names of his contributors may be used to endorse |
// | or promote products derived from this software without specific prior|
// | written permission. |
// | |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
// | POSSIBILITY OF SUCH DAMAGE. |
// +----------------------------------------------------------------------+
// | Author: Christian Dickmann <dickmann@php.net> |
// +----------------------------------------------------------------------+
//
// $Id: Parser.php,v 1.30.4.1 2004/01/08 13:43:02 lsmith Exp $
//
require_once('XML/Parser.php');
/**
* Parses an XML schema file
*
* @package MDB
* @category Database
* @access private
* @author Christian Dickmann <dickmann@php.net>
*/
class MDB_Parser extends XML_Parser
{
var $database_definition = array();
var $elements = array();
var $element = '';
var $count = 0;
var $table = array();
var $table_name = '';
var $field = array();
var $field_name = '';
var $init = array();
var $init_name = '';
var $init_value = '';
var $index = array();
var $index_name = '';
var $var_mode = FALSE;
var $variables = array();
var $seq = array();
var $seq_name = '';
var $error = NULL;
var $invalid_names = array(
'user' => array(),
'is' => array(),
'file' => array(
'oci' => array(),
'oracle' => array()
),
'notify' => array(
'pgsql' => array()
),
'restrict' => array(
'mysql' => array()
),
'password' => array(
'ibase' => array()
)
);
var $fail_on_invalid_names = 1;
function MDB_Parser($variables, $fail_on_invalid_names = 1)
{
$this->XML_Parser();
$this->variables = $variables;
$this->fail_on_invalid_names = $fail_on_invalid_names;
}
function startHandler($xp, $element, $attribs)
{
if (strtolower($element) == 'variable') {
$this->var_mode = TRUE;
return;
};
$this->elements[$this->count++] = strtolower($element);
$this->element = implode('-', $this->elements);
switch($this->element) {
case 'database-table-initialization-insert':
$this->init = array('type' => 'insert');
break;
case 'database-table-initialization-insert-field':
$this->init_name = '';
$this->init_value = '';
break;
case 'database-table':
$this->table_name = '';
$this->table = array();
break;
case 'database-table-declaration-field':
$this->field_name = '';
$this->field = array();
break;
case 'database-table-declaration-field-default':
$this->field['default'] = '';
break;
case 'database-table-declaration-index':
$this->index_name = '';
$this->index = array();
break;
case 'database-sequence':
$this->seq_name = '';
$this->seq = array();
break;
case 'database-table-declaration-index-field':
$this->field_name = '';
$this->field = array();
break;
};
}
function endHandler($xp, $element)
{
if (strtolower($element) == 'variable') {
$this->var_mode = FALSE;
return;
};
switch($this->element) {
/* Initialization */
case 'database-table-initialization-insert-field':
if (!$this->init_name) {
$this->raiseError('field-name has to be specified', $xp);
};
if (isset($this->init['FIELDS'][$this->init_name])) {
$this->raiseError('field "'.$this->init_name.'" already filled', $xp);
};
if (!isset($this->table['FIELDS'][$this->init_name])) {
$this->raiseError('unkown field "'.$this->init_name.'"', $xp);
};
if ($this->init_value !== ''
&& !$this->validateFieldValue($this->init_name, $this->init_value, $xp))
{
$this->raiseError('field "'.$this->init_name.'" has wrong value', $xp);
};
$this->init['FIELDS'][$this->init_name] = $this->init_value;
break;
case 'database-table-initialization-insert':
$this->table['initialization'][] = $this->init;
break;
/* Table definition */
case 'database-table':
if (!isset($this->table['was'])) {
$this->table['was'] = $this->table_name;
};
if (!$this->table_name) {
$this->raiseError('tables need names', $xp);
};
if (isset($this->database_definition['TABLES'][$this->table_name])) {
$this->raiseError('table "'.$this->table_name.'" already exists', $xp);
};
if (!isset($this->table['FIELDS'])) {
$this->raiseError('tables need one or more fields', $xp);
};
if (isset($this->table['INDEXES'])) {
foreach($this->table['INDEXES'] as $index_name => $index) {
foreach($index['FIELDS'] as $field_name => $field) {
if (!isset($this->table['FIELDS'][$field_name])) {
$this->raiseError('index field "'.$field_name.'" does not exist', $xp);
}
if (!(isset($this->table['FIELDS'][$field_name]['notnull'])
&& $this->table['FIELDS'][$field_name]['notnull'] == 1))
{
$this->raiseError('index field "'.$field_name.'" has to be "notnull"', $xp);
}
}
}
};
$this->database_definition['TABLES'][$this->table_name] = $this->table;
break;
/* Field declaration */
case 'database-table-declaration-field':
if (!$this->field_name || !isset($this->field['type'])) {
$this->raiseError('field "'.$this->field_name.'" was not properly specified', $xp);
};
if (isset($this->table['FIELDS'][$this->field_name])) {
$this->raiseError('field "'.$this->field_name.'" already exists', $xp);
};
/* Invalidname check */
if ($this->fail_on_invalid_names && isset($this->invalid_names[$this->field_name])) {
$this->raiseError('fieldname "'.$this->field_name.'" not allowed', $xp);
};
/* Type check */
switch($this->field['type']) {
case 'integer':
if (isset($this->field['unsigned'])
&& $this->field['unsigned'] !== '1' && $this->field['unsigned'] !== '0')
{
$this->raiseError('unsigned has to be 1 or 0', $xp);
};
break;
case 'text':
case 'clob':
case 'blob':
if (isset($this->field['length']) && ((int)$this->field['length']) <= 0) {
$this->raiseError('length has to be an integer greater 0', $xp);
};
break;
case 'boolean':
case 'date':
case 'timestamp':
case 'time':
case 'float':
case 'decimal':
break;
default:
$this->raiseError('no valid field type ("'.$this->field['type'].'") specified', $xp);
};
if (!isset($this->field['was'])) {
$this->field['was'] = $this->field_name;
};
if (isset($this->field['notnull']) && !$this->is_boolean($this->field['notnull'])) {
$this->raiseError('field "notnull" has to be 1 or 0', $xp);
};
if (isset($this->field['notnull']) && !isset($this->field['default'])) {
$this->raiseError('if field is "notnull", it needs a default value', $xp);
};
if (isset($this->field['unsigned']) && !$this->is_boolean($this->field['unsigned'])) {
$this->raiseError('field "notnull" has to be 1 or 0', $xp);
};
$this->table['FIELDS'][$this->field_name] = $this->field;
if (isset($this->field['default'])) {
if ($this->field['type'] == 'clob' || $this->field['type'] == 'blob') {
$this->raiseError('"'.$this->field['type'].'"-fields are not allowed to have a default value', $xp);
};
if ($this->field['default'] !== ''
&& !$this->validateFieldValue($this->field_name, $this->field['default'], $xp))
{
$this->raiseError('default value of "'.$this->field_name.'" is of wrong type', $xp);
};
};
break;
/* Index declaration */
case 'database-table-declaration-index':
if (!$this->index_name) {
$this->raiseError('an index needs a name', $xp);
};
if (isset($this->table['INDEXES'][$this->index_name])) {
$this->raiseError('index "'.$this->index_name.'" already exists', $xp);
};
if (isset($this->index['unique']) && !$this->is_boolean($this->index['unique'])) {
$this->raiseError('field "unique" has to be 1 or 0', $xp);
};
if (!isset($this->index['was'])) {
$this->index['was'] = $this->index_name;
};
$this->table['INDEXES'][$this->index_name] = $this->index;
break;
case 'database-table-declaration-index-field':
if (!$this->field_name) {
$this->raiseError('the index-field-name is required', $xp);
};
if (isset($this->field['sorting'])
&& $this->field['sorting'] !== 'ascending' && $this->field['sorting'] !== 'descending') {
$this->raiseError('sorting type unknown', $xp);
};
$this->index['FIELDS'][$this->field_name] = $this->field;
break;
/* Sequence declaration */
case 'database-sequence':
if (!$this->seq_name) {
$this->raiseError('a sequence has to have a name', $xp);
};
if (isset($this->database_definition['SEQUENCES'][$this->seq_name])) {
$this->raiseError('sequence "'.$this->seq_name.'" already exists', $xp);
};
if (!isset($this->seq['was'])) {
$this->seq['was'] = $this->seq_name;
};
if (isset($this->seq['on'])) {
if ((!isset($this->seq['on']['table']) || !$this->seq['on']['table'])
|| (!isset($this->seq['on']['field']) || !$this->seq['on']['field']))
{
$this->raiseError('sequence "'.$this->seq_name.'" was not properly defined', $xp);
};
};
$this->database_definition['SEQUENCES'][$this->seq_name] = $this->seq;
break;
/* End of File */
case 'database':
if (isset($this->database_definition['create'])
&& !$this->is_boolean($this->database_definition['create']))
{
$this->raiseError('field "create" has to be 1 or 0', $xp);
};
if (isset($this->database_definition['overwrite'])
&& !$this->is_boolean($this->database_definition['overwrite']))
{
$this->raiseError('field "overwrite" has to be 1 or 0', $xp);
};
if (!isset($this->database_definition['name']) || !$this->database_definition['name']) {
$this->raiseError('database needs a name', $xp);
};
if (isset($this->database_definition['SEQUENCES'])) {
foreach($this->database_definition['SEQUENCES'] as $seq_name => $seq) {
if (isset($seq['on'])
&& !isset($this->database_definition['TABLES'][$seq['on']['table']]['FIELDS'][$seq['on']['field']]))
{
$this->raiseError('sequence "'.$seq_name.'" was assigned on unexisting field/table', $xp);
};
};
};
if (MDB::isError($this->error)) {
$this->database_definition = $this->error;
};
break;
}
unset($this->elements[--$this->count]);
$this->element = implode('-', $this->elements);
}
function validateFieldValue($field_name, &$field_value, &$xp)
{
if (!isset($this->table['FIELDS'][$field_name])) {
return;
};
$field_def = $this->table['FIELDS'][$field_name];
switch($field_def['type']) {
case 'text':
case 'clob':
if (isset($field_def['length']) && strlen($field_value) > $field_def['length']) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
};
break;
case 'blob':
/*
if (!preg_match('/^([0-9a-f]{2})*$/i', $field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
}
*/
$field_value = pack('H*', $field_value);
if (isset($field_def['length']) && strlen($field_value) > $field_def['length']) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
};
break;
case 'integer':
if ($field_value != ((int)$field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
};
$field_value = (int) $field_value;
if (isset($field_def['unsigned']) && $field_def['unsigned'] && $field_value < 0) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
};
break;
case 'boolean':
if (!$this->is_boolean($field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
}
break;
case 'date':
if (!preg_match('/([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})/', $field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
}
break;
case 'timestamp':
if (!preg_match('/([0-9]{4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{2}):([0-9]{2}):([0-9]{2})/', $field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
}
break;
case 'time':
if (!preg_match("/([0-9]{2}):([0-9]{2}):([0-9]{2})/", $field_value)) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
}
break;
case 'float':
case 'double':
if ($field_value != (double) $field_value) {
return($this->raiseError('"'.$field_value.'" is not of type "'.$field_def['type'].'"', $xp));
};
$field_value = (double) $field_value;
break;
}
return(TRUE);
}
function raiseError($msg, $xp = NULL)
{
if ($this->error === NULL) {
if(is_resource($msg)) {
$error = "Parser error: ";
$xp = $msg;
} else {
$error = "Parser error: \"".$msg."\"\n";
}
if($xp != NULL) {
$byte = @xml_get_current_byte_index($xp);
$line = @xml_get_current_line_number($xp);
$column = @xml_get_current_column_number($xp);
$error .= "Byte: $byte; Line: $line; Col: $column\n";
}
$this->error = PEAR::raiseError(NULL, MDB_ERROR_MANAGER_PARSE, NULL, NULL,
$error, 'MDB_Error', TRUE);
};
return(FALSE);
}
function is_boolean(&$value)
{
if (is_int($value) && ($value == 0 || $value == 1)) {
return(TRUE);
};
if ($value === '1' || $value === '0') {
$value = (int) $value;
return(TRUE);
};
switch($value)
{
case 'N':
case 'n':
case 'no':
case 'FALSE':
$value = 0;
break;
case 'Y':
case 'y':
case 'yes':
case 'TRUE':
$value = 1;
break;
default:
return(FALSE);
};
return(TRUE);
}
function cdataHandler($xp, $data)
{
if ($this->var_mode == TRUE) {
if (!isset($this->variables[$data])) {
$this->raiseError('variable "'.$data.'" not found', $xp);
return;
};
$data = $this->variables[$data];
};
switch($this->element) {
/* Initialization */
case 'database-table-initialization-insert-field-name':
@$this->init_name .= $data;
break;
case 'database-table-initialization-insert-field-value':
@$this->init_value .= $data;
break;
/* Database */
case 'database-name':
@$this->database_definition['name'] .= $data;
break;
case 'database-create':
@$this->database_definition['create'] .= $data;
break;
case 'database-overwrite':
@$this->database_definition['overwrite'] .= $data;
break;
case 'database-table-name':
@$this->table_name .= $data;
break;
case 'database-table-was':
@$this->table['was'] .= $data;
break;
/* Field declaration */
case 'database-table-declaration-field-name':
@$this->field_name .= $data;
break;
case 'database-table-declaration-field-type':
@$this->field['type'] .= $data;
break;
case 'database-table-declaration-field-was':
@$this->field['was'] .= $data;
break;
case 'database-table-declaration-field-notnull':
@$this->field['notnull'] .= $data;
break;
case 'database-table-declaration-field-unsigned':
@$this->field['unsigned'] .= $data;
break;
case 'database-table-declaration-field-default':
@$this->field['default'] .= $data;
break;
case 'database-table-declaration-field-length':
@$this->field['length'] .= $data;
break;
/* Index declaration */
case 'database-table-declaration-index-name':
@$this->index_name .= $data;
break;
case 'database-table-declaration-index-unique':
@$this->index['unique'] .= $data;
break;
case 'database-table-declaration-index-was':
@$this->index['was'] .= $data;
break;
case 'database-table-declaration-index-field-name':
@$this->field_name .= $data;
break;
case 'database-table-declaration-index-field-sorting':
@$this->field['sorting'] .= $data;
break;
/* Sequence declaration */
case 'database-sequence-name':
@$this->seq_name .= $data;
break;
case 'database-sequence-was':
@$this->seq['was'] .= $data;
break;
case 'database-sequence-start':
@$this->seq['start'] .= $data;
break;
case 'database-sequence-on-table':
@$this->seq['on']['table'] .= $data;
break;
case 'database-sequence-on-field':
@$this->seq['on']['field'] .= $data;
break;
};
}
};
?>
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