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egroupware_official/etemplate/inc/class.db_tools.inc.php

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<?php
/**************************************************************************\
* phpGroupWare - eTemplates - DB-Tools *
* http://www.phpgroupware.org *
* Written by Ralf Becker <RalfBecker@outdoor-training.de> *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
/* $Id$ */
class db_tools
{
var $public_functions = array
(
'edit' => True,
'needs_save' => True,
'writeLangFile'=> True,
//'admin' => True,
//'preferences' => True
);
var $debug = 0;
var $editor; // editor eTemplate
var $data; // Table definitions
var $app; // used app
var $table; // used table
var $messages = array(
'not_found' => 'Not found !!!',
'select_one' => 'Select one ...',
'writen' => 'File writen',
'error_writing' => 'Error: writing file (no write-permission for the webserver) !!!',
'give_table_name' => 'Please enter table-name first !!!',
'new_table' => 'New table created',
'select_app' => 'Select an app first !!!'
);
var $types = array(
'auto' => 'auto',
'blob' => 'blob',
'char' => 'char',
'date' => 'date',
'decimal' => 'decimal',
'float' => 'float',
'int' => 'int',
'longtext' => 'longtext',
'text' => 'text',
'timestamp' => 'timestamp',
'varchar' => 'varchar'
);
var $setup_header = '<?php
/**************************************************************************\\
* phpGroupWare - Setup *
* http://www.phpgroupware.org *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\\**************************************************************************/
/* $Id$ */
';
/*!
@function db_tools()
@abstract constructor of class
*/
function db_tools($lang_on_messages=True)
{
$this->editor = CreateObject('etemplate.etemplate','etemplate.db-tools.edit');
$this->data = array();
if (!is_array($GLOBALS['phpgw_info']['apps']) || !count($GLOBALS['phpgw_info']['apps']))
{
ExecMethod('phpgwapi.applications.read_installed_apps');
}
$this->apps = array();
reset($GLOBALS['phpgw_info']['apps']);
while (list($name,$data) = each($GLOBALS['phpgw_info']['apps']))
{
$this->apps[$name] = $data['title'];
}
if ($lang_on_messages)
{
reset($this->messages);
while(list($key,$msg) = each($this->messages))
$this->messages[$key] = lang($msg);
}
}
/*!
@function edit($content='',$msg='')
@abstract this is the table editor (and the callback/submit-method too)
*/
function edit($content='',$msg = '')
{
if (isset($GLOBALS['HTTP_GET_VARS']['app']))
{
$this->app = $GLOBALS['HTTP_GET_VARS']['app'];
}
if (is_array($content))
{
if ($this->debug)
{
echo "content ="; _debug_array($content);
}
$this->app = $content['app']; // this is what the user selected
$this->table = $content['table_name'];
$posted_app = $content['posted_app']; // this is the old selection
$posted_table = $content['posted_table'];
}
if ($posted_app && $posted_table && // user changed app or table
($posted_app != $this->app || $posted_table != $this->table))
{
if ($this->needs_save('',$posted_app,$posted_table,$this->content2table($content)))
{
return;
}
$this->renames = array();
}
if (!$this->app)
{
$this->table = '';
$table_names = array('' => lang('none'));
}
else
{
$this->read($this->app,$this->data);
for (reset($this->data); list($name,$table) = each($this->data); )
{
$table_names[$name] = $name;
}
}
if (!$this->table || $this->app != $posted_app)
{
reset($this->data);
list($this->table) = each($this->data); // use first table
}
elseif ($this->app == $posted_app && $posted_table)
{
$this->data[$posted_table] = $this->content2table($content);
}
if ($content['write_tables'])
{
if ($this->needs_save('',$this->app,$this->table,$this->data[$posted_table]))
{
return;
}
$msg .= $this->messages[$this->write($this->app,$this->data) ? 'writen' : 'error_writing'];
}
elseif ($content['delete'])
{
list($col) = each($content['delete']);
@reset($this->data[$posted_table]['fd']);
while ($col-- > 0 && list($key,$data) = @each($this->data[$posted_table]['fd'])) ;
unset($this->data[$posted_table]['fd'][$key]);
$this->changes[$posted_table][$key] = '**deleted**';
}
elseif ($content['add_column'])
{
$this->data[$posted_table]['fd'][''] = array();
}
elseif ($content['add_table'] || $content['import'])
{
if (!$this->app)
{
$msg .= $this->messages['select_app'];
}
elseif (!$content['new_table_name'])
{
$msg .= $this->messages['give_table_name'];
}
elseif ($content['add_table'])
{
$this->table = $content['new_table_name'];
$this->data[$this->table] = array('fd' => array(),'pk' =>array(),'ix' => array(),'uc' => array(),'fk' => array());
$msg .= $this->messages['new_table'];
}
else // import
{
$oProc = CreateObject('phpgwapi.schema_proc',$GLOBALS['phpgw_info']['server']['db_type']);
$oProc->m_odb = $GLOBALS['phpgw']->db;
$oProc->m_oTranslator->_GetColumns($oProc,$content['new_table_name'],$nul);
while (list($key,$tbldata) = each ($oProc->m_oTranslator->sCol))
{
$cols .= $tbldata;
}
eval('$cols = array('. $cols . ');');
$this->data[$this->table = $content['new_table_name']] = array(
'fd' => $cols,
'pk' => $oProc->m_oTranslator->pk,
'fk' => $oProc->m_oTranslator->fk,
'ix' => $oProc->m_oTranslator->ix,
'uc' => $oProc->m_oTranslator->uc
);
}
}
elseif ($content['editor'])
{
ExecMethod('etemplate.editor.edit');
return;
}
// from here on, filling new content for eTemplate
$content = array(
'msg' => $msg,
'table_name' => $this->table,
'app' => $this->app,
);
if (!isset($table_names[$this->table])) // table is not jet written
{
$table_names[$this->table] = $this->table;
}
$sel_options = array(
'table_name' => $table_names,
'type' => $this->types,
'app' => array('' => $this->messages['select_one']) + $this->apps
);
if ($this->table != '' && isset($this->data[$this->table]))
{
$content += $this->table2content($this->data[$this->table]);
}
$no_button = array( );
if (!$this->app || !$this->table)
{
$no_button += array('write_tables' => True);
}
if ($this->debug)
{
echo 'editor.edit: content ='; _debug_array($content);
}
$this->editor->exec('etemplate.db_tools.edit',$content,$sel_options,$no_button,
array('posted_table' => $this->table,'posted_app' => $this->app,'changes' => $this->changes));
}
/*!
@function needs_save($cont='',$posted_app='',$posted_table='',$edited_table='')
@abstract checks if table was changed and if so offers user to save changes
@param $cont the content of the form (if called by process_exec)
@param $posted_app the app the table is from
@param $posted_table the table-name
@param $edited_table the edited table-definitions
@returns only if no changes
*/
function needs_save($cont='',$posted_app='',$posted_table='',$edited_table='')
{
if (!$posted_app && is_array($cont))
{
if (isset($cont['yes']))
{
$this->app = $cont['app'];
$this->table = $cont['table'];
$this->read($this->app,$this->data);
$this->data[$this->table] = $cont['edited_table'];
$this->changes = $cont['changes'];
if ($cont['new_version'])
{
$this->update($this->app,$this->data,$cont['new_version']);
}
$msg .= $this->messages[$this->write($this->app,$this->data) ?
'writen' : 'error_writing'];
}
$this->changes = array();
// return to edit with everything set, so the user gets the table he asked for
$this->edit(array(
'app' => $cont['new_app'],
'table_name' => $cont['app']==$cont['new_app'] ? $cont['new_table'] : '',
'posted_app' => $cont['new_app']
),$msg);
return True;
}
$new_app = $this->app; // these are the ones, the users whiches to change too
$new_table = $this->table;
$this->app = $posted_app;
$this->data = array();
$this->read($posted_app,$this->data);
if (isset($this->data[$posted_table]) &&
$this->tables_identical($this->data[$posted_table],$edited_table))
{
$this->app = $new_app;
$this->data = array();
return False; // continue edit
}
$content = array(
'app' => $posted_app,
'table' => $posted_table,
'version' => $this->setup_version($posted_app)
);
$preserv = $content + array(
'new_app' => $new_app,
'new_table' => $new_table,
'edited_table' => $edited_table,
'changes' => $this->changes
);
$content['new_version'] = $content['version'];
$tmpl = new etemplate('etemplate.db-tools.ask_save');
if (!file_exists(PHPGW_SERVER_ROOT."/$posted_app/setup/tables_current.inc.php"))
{
$tmpl->disable_cells('version');
$tmpl->disable_cells('new_version');
}
$tmpl->exec('etemplate.db_tools.needs_save',$content,array(),array(),$preserv);
return True; // dont continue in edit
}
/*!
@function table2content($table)
@abstract creates content-array from a $table
@param $table table-definition, eg. $phpgw_baseline[$table_name]
@returns content-array
*/
function table2content($table)
{
$content = array();
for ($n = 1; list($col_name,$col_defs) = each($table['fd']); ++$n)
{
$col_defs['name'] = $col_name;
$col_defs['pk'] = in_array($col_name,$table['pk']);
$col_defs['uc'] = in_array($col_name,$table['uc']);
$col_defs['ix'] = in_array($col_name,$table['ix']);
$col_defs['fk'] = $table['fk'][$col_name];
if (isset($col_defs['default']) && $col_defs['default'] == '')
{
$col_defs['default'] = is_int($col_defs['default']) ? '0' : "''"; // spezial value for empty, but set, default
}
$col_defs['n'] = $n;
$content["Row$n"] = $col_defs;
}
if ($this->debug >= 3)
{
echo "<p>table2content: content ="; _debug_array($content);
}
return $content;
}
/*!
@function content2table($content)
@abstract creates table-definition from posted content
@param $content posted content-array
@returns table-definition
*/
function content2table($content)
{
if (!is_array($this->data))
{
$this->read($content['posted_app'],$this->data);
}
$old_cols = $this->data[$posted_table = $content['posted_table']]['fd'];
$this->changes = $content['changes'];
$table = array();
$table['fd'] = array(); // do it in the default order of tables_*
$table['pk'] = array();
$table['fk'] = array();
$table['ix'] = array();
$table['uc'] = array();
for (reset($content),$n = 1; isset($content["Row$n"]); ++$n)
{
$col = $content["Row$n"];
while ((list($old_name,$old_col) = @each($old_cols)) &&
$this->changes[$posted_table][$old_name] == '**deleted**') ;
if (($name = $col['name']) != '') // ignoring lines without column-name
{
if ($col['name'] != $old_name && $n <= count($old_cols)) // column renamed --> remeber it
{
$this->changes[$posted_table][$old_name] = $col['name'];
//echo "<p>content2table: $posted_table.$old_name renamed to $col[name]</p>\n";
}
while (list($prop,$val) = each($col))
{
switch ($prop)
{
case 'default':
case 'type': // selectbox ensures type is not empty
case 'precision':
case 'scale':
case 'nullable':
if ($val != '' || $prop == 'nullable')
{
$table['fd'][$name][$prop] = $prop=='default'&& $val=="''" ? '' : $val;
}
break;
case 'pk':
case 'uc':
case 'ix':
if ($val)
{
$table[$prop][] = $name;
}
break;
case 'fk':
if ($val != '')
{
$table['fk'][$name] = $val;
}
break;
}
}
}
}
if ($this->debug >= 2)
{
echo "<p>content2table: table ="; _debug_array($table);
echo "<p>changes = "; _debug_array($this->changes);
}
return $table;
}
/*!
@function read($app,&$phpgw_baseline)
@abstract includes $app/setup/tables_current.inc.php
@param $app application name
@param $phpgw_baseline where to put the data
@returns True if file found, False else
*/
function read($app,&$phpgw_baseline)
{
$file = PHPGW_SERVER_ROOT."/$app/setup/tables_current.inc.php";
$phpgw_baseline = array();
if ($app != '' && file_exists($file))
{
include($file);
}
else
{
return False;
}
if ($this->debug >= 5)
{
echo "<p>read($app): file='$file', phpgw_baseline =";
_debug_array($phpgw_baseline);
}
return True;
}
function write_array($arr,$depth,$parent='')
{
if (in_array($parent,array('pk','fk','ix','uc')))
{
$depth = 0;
if ($parent != 'fk')
{
$only_vals = True;
}
}
if ($depth)
{
$tabs = "\n";
for ($n = 0; $n < $depth; ++$n)
{
$tabs .= "\t";
}
++$depth;
}
$def = "array($tabs".($tabs ? "\t" : '');
reset($arr);
for ($n = 0; list($key,$val) = each($arr); ++$n)
{
if (!$only_vals)
{
$def .= "'$key' => ";
}
if (is_array($val))
{
$def .= $this->write_array($val,$parent == 'fd' ? 0 : $depth,$key,$only_vals);
}
else
{
if (!$only_vals && $key == 'nullable')
{
$def .= $val ? 'True' : 'False';
}
else
{
$def .= "'$val'";
}
}
if ($n < count($arr)-1)
{
$def .= ",$tabs".($tabs ? "\t" : '');
}
}
$def .= "$tabs)";
return $def;
}
/*!
@function write($app,$phpgw_baseline)
@abstract writes tabledefinitions $phpgw_baseline to file /$app/setup/tables_current.inc.php
@param $app app-name
@param $phpgw_baseline tabledefinitions
@return True if file writen else False
*/
function write($app,$phpgw_baseline)
{
$file = PHPGW_SERVER_ROOT."/$app/setup/tables_current.inc.php";
if (file_exists($file) && ($f = fopen($file,'r')))
{
$header = fread($f,filesize($file));
$header = substr($header,0,strpos($header,'$phpgw_baseline'));
fclose($f);
if (is_writable(PHPGW_SERVER_ROOT."/$app/setup"))
{
rename($file,PHPGW_SERVER_ROOT."/$app/setup/tables_current.old.inc.php");
}
while ($header[strlen($header)-1] == "\t")
{
$header = substr($header,0,strlen($header)-1);
}
}
if (!$header)
{
$header = $this->setup_header . "\n\n";
}
if (!is_writeable(PHPGW_SERVER_ROOT."/$app/setup") || !($f = fopen($file,'w')))
{
return False;
}
$def .= "\t\$phpgw_baseline = ";
$def .= $this->write_array($phpgw_baseline,1);
$def .= ";\n";
fwrite($f,$header . $def);
fclose($f);
return True;
}
/*!
@function setup_version($app,$new = '')
@abstract reads and updates the version in file $app/setup/setup.inc.php if $new != ''
@return the version or False if the file could not be read or written
*/
function setup_version($app,$new = '')
{
//echo "<p>etemplate.db_tools.setup_version('$app','$new')</p>\n";
$file = PHPGW_SERVER_ROOT."/$app/setup/setup.inc.php";
if (file_exists($file))
{
include($file);
}
if (!is_array($setup_info[$app]) || !isset($setup_info[$app]['version']))
{
return False;
}
if ($new == '' || $setup_info[$app]['version'] == $new)
{
return $setup_info[$app]['version'];
}
if (!($f = fopen($file,'r')))
{
return False;
}
$fcontent = fread($f,filesize($file));
fclose ($f);
if (is_writable(PHPGW_SERVER_ROOT."/$app/setup"))
{
rename($file,PHPGW_SERVER_ROOT."/$app/setup/setup.old.inc.php");
}
$fnew = eregi_replace("(.*\\$"."setup_info\\['$app'\\]\\['version'\\][ \\t]*=[ \\t]*')[^']*('.*)","\\1$new"."\\2",$fcontent);
if (!is_writeable(PHPGW_SERVER_ROOT."/$app/setup") || !($f = fopen($file,'w')))
{
return False;
}
fwrite($f,$fnew);
fclose($f);
return $new;
}
/*!
@function update($app,$current,$version)
@abstract updates file /$app/setup/tables_update.inc.php to reflect changes in $current
@param $app app-name
@param $current new tabledefinitions
@param $version new version
@return True if file writen else False
*/
function update($app,$current,$version)
{
//echo "<p>etemplate.db_tools.update('$app',...,'$version')</p>\n";
if (!is_writable(PHPGW_SERVER_ROOT."/$app/setup"))
{
return False;
}
$file_baseline = PHPGW_SERVER_ROOT."/$app/setup/tables_baseline.inc.php";
$file_current = PHPGW_SERVER_ROOT."/$app/setup/tables_current.inc.php";
$file_update = PHPGW_SERVER_ROOT."/$app/setup/tables_update.inc.php";
if (!file_exists($file_baseline) && !copy($file_current,$file_baseline))
{
//echo "<p>Can't copy $file_current to $file_baseline !!!</p>\n";
return False;
}
$old_version = $this->setup_version($app);
$old_version_ = str_replace('.','_',$old_version);
if (file_exists($file_update))
{
$f = fopen($file_update,'r');
$update = fread($f,filesize($file_update));
$update = str_replace('?>','',$update);
fclose($f);
rename($file_update,PHPGW_SERVER_ROOT."/$app/setup/tables_update.old.inc.php");
}
else
{
$update = $this->setup_header;
}
$update .= "
\$test[] = '$old_version';
function $app"."_upgrade$old_version_()
{\n";
$update .= $this->update_schema($app,$current);
$update .= "\n
\$GLOBALS['setup_info']['$app']['currentver'] = '$version';
return \$GLOBALS['setup_info']['phpgwapi']['currentver'];
}
?".">\n";
if (!($f = fopen($file_update,'w')))
{
//echo "<p>Cant open '$update' for writing !!!</p>\n";
return False;
}
fwrite($f,$update);
fclose($f);
$this->setup_version($app,$version);
return True;
}
function remove_from_array(&$arr,$value)
{
reset($arr);
while (list($key,$val) = each($arr))
{
if ($val == $value)
{
unset($arr[$key]);
}
}
}
function update_schema($app,$current)
{
$this->read($app,$old);
reset($old);
while (list($name,$table_def) = each($old))
{
if (!isset($current[$name])) // table $name droped
{
$update .= "\t\t\$GLOBALS['phpgw_setup']->oProc->DropTable('$name');\n";
}
else
{
reset($table_def['fd']);
while(list($col,$col_def) = each($table_def['fd']))
{
if (!isset($current[$name]['fd'][$col])) // column $col droped
{
if (!isset($this->changes[$name][$col]) || $this->changes[$name][$col] == '**deleted**')
{
$new_table_def = $table_def;
unset($new_table_def['fd'][$col]);
$this->remove_from_array($new_table_def['pk'],$col);
$this->remove_from_array($new_table_def['fk'],$col);
$this->remove_from_array($new_table_def['ix'],$col);
$this->remove_from_array($new_table_def['uc'],$col);
$update .= "\t\t\$GLOBALS['phpgw_setup']->oProc->DropColumn('$name',";
$update .= $this->write_array($new_table_def,2).",'$col');\n";
}
else // column $col renamed
{
$new_col = $this->changes[$name][$col];
$update .= "\t\t\$GLOBALS['phpgw_setup']->oProc->RenameColumn('$name','$col','$new_col');\n";
}
}
}
@reset($this->changes[$name]);
while (list($col,$new_col) = @each($this->changes[$name]))
{
if ($new_col != '**deleted**')
{
$old[$name]['fd'][$new_col] = $old[$name]['fd'][$col]; // to be able to detect further changes of the definition
unset($old[$name]['fd'][$col]);
}
}
}
}
reset($current);
while(list($name,$table_def) = each($current))
{
if (!isset($old[$name])) // table $name added
{
$update .= "\t\t\$GLOBALS['phpgw_setup']->oProc->CreateTable('$name',";
$update .= $this->write_array($table_def,2).");\n";
}
else
{
$old_norm = $this->normalize($old[$name]);
$new_norm = $this->normalize($table_def);
reset($table_def['fd']);
while (list($col,$col_def) = each($table_def['fd']))
{
if (($add = !isset($old[$name]['fd'][$col])) || // column $col added
serialize($old_norm['fd'][$col]) != serialize($new_norm['fd'][$col])) // column definition altered
{
$update .= "\t\t$"."GLOBALS['phpgw_setup']->oProc->".($add ? 'Add' : 'Alter')."Column('$name','$col',";
$update .= $this->write_array($col_def,2) . ");\n";
}
}
}
}
if ($this->debug)
{
echo "<p>update_schema($app, ...) =<br><pre>$update</pre>)</p>\n";
}
return $update;
}
/*!
@function normalize($table)
@abstract sets all nullable properties to True or False
@returns the new array
*/
function normalize($table)
{
$all_props = array('type','precision','nullable','default');
reset($table['fd']);
while (list($col,$props) = each($table['fd']))
{
$table['fd'][$col] = array(
'type' => ''.$props['type'],
'precision' => 0+$props['precision'],
'scale' => 0+$props['scale'],
'nullable' => !!$props['nullable'],
'default' => ''.$props['default']
);
}
return array(
'fd' => $table['fd'],
'pk' => $table['pk'],
'fk' => $table['fk'],
'ix' => $table['ix'],
'uc' => $table['uc']
);
}
/*!
@function tables_identical($old,$new)
@abstract compares two table-definitions
@returns True if they are identical or False else
*/
function tables_identical($a,$b)
{
$a = serialize($this->normalize($a));
$b = serialize($this->normalize($b));
//echo "<p>checking if tables identical = ".($a == $b ? 'True' : 'False')."<br>\n";
//echo "a: $a<br>\nb: $b</p>\n";
return $a == $b;
}
/*!
@function writeLangFile
@abstract writes langfile with all templates and messages registered here
@discussion can be called via http://domain/phpgroupware/index.php?etemplate.db_tools.writeLangFile
*/
function writeLangFile()
{
$m = new db_tools(False); // no lang on messages
$this->editor->writeLangFile('etemplate','en',$m->messages);
}
};
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