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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Set of methods used to build dumps of tables as JSON
*
* @package PhpMyAdmin-Export
* @subpackage JSON
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/* Get the export interface */
require_once 'libraries/plugins/ExportPlugin.class.php';
/**
* Handles the export for the JSON format
*
* @package PhpMyAdmin-Export
* @subpackage JSON
*/
class ExportJson extends ExportPlugin
{
/**
* Constructor
*/
public function __construct()
{
$this->setProperties();
}
/**
* Sets the export JSON properties
*
* @return void
*/
protected function setProperties()
{
$props = 'libraries/properties/';
include_once "$props/plugins/ExportPluginProperties.class.php";
include_once "$props/options/groups/OptionsPropertyRootGroup.class.php";
include_once "$props/options/groups/OptionsPropertyMainGroup.class.php";
include_once "$props/options/items/HiddenPropertyItem.class.php";
$exportPluginProperties = new ExportPluginProperties();
$exportPluginProperties->setText('JSON');
$exportPluginProperties->setExtension('json');
$exportPluginProperties->setMimeType('text/plain');
$exportPluginProperties->setOptionsText(__('Options'));
// create the root group that will be the options field for
// $exportPluginProperties
// this will be shown as "Format specific options"
$exportSpecificOptions = new OptionsPropertyRootGroup();
$exportSpecificOptions->setName("Format Specific Options");
// general options main group
$generalOptions = new OptionsPropertyMainGroup();
$generalOptions->setName("general_opts");
// create primary items and add them to the group
$leaf = new HiddenPropertyItem();
$leaf->setName("structure_or_data");
$generalOptions->addProperty($leaf);
// add the main group to the root group
$exportSpecificOptions->addProperty($generalOptions);
// set the options for the export plugin property item
$exportPluginProperties->setOptions($exportSpecificOptions);
$this->properties = $exportPluginProperties;
}
/**
* This method is called when any PluginManager to which the observer
* is attached calls PluginManager::notify()
*
* @param SplSubject $subject The PluginManager notifying the observer
* of an update.
*
* @return void
*/
public function update (SplSubject $subject)
{
}
/**
* Outputs export header
*
* @return bool Whether it succeeded
*/
public function exportHeader ()
{
PMA_exportOutputHandler(
'/**' . $GLOBALS['crlf']
. ' Export to JSON plugin for PHPMyAdmin' . $GLOBALS['crlf']
. ' @version 0.1' . $GLOBALS['crlf']
. ' */' . $GLOBALS['crlf'] . $GLOBALS['crlf']
);
return true;
}
/**
* Outputs export footer
*
* @return bool Whether it succeeded
*/
public function exportFooter ()
{
return true;
}
/**
* Outputs database header
*
* @param string $db Database name
*
* @return bool Whether it succeeded
*/
public function exportDBHeader ($db)
{
PMA_exportOutputHandler('// Database \'' . $db . '\'' . $GLOBALS['crlf']);
return true;
}
/**
* Outputs database footer
*
* @param string $db Database name
*
* @return bool Whether it succeeded
*/
public function exportDBFooter ($db)
{
return true;
}
/**
* Outputs CREATE DATABASE statement
*
* @param string $db Database name
*
* @return bool Whether it succeeded
*/
public function exportDBCreate($db)
{
return true;
}
/**
* Outputs the content of a table in JSON format
*
* @param string $db database name
* @param string $table table name
* @param string $crlf the end of line sequence
* @param string $error_url the url to go back in case of error
* @param string $sql_query SQL query for obtaining data
*
* @return bool Whether it succeeded
*/
public function exportData($db, $table, $crlf, $error_url, $sql_query)
{
$result = PMA_DBI_query($sql_query, null, PMA_DBI_QUERY_UNBUFFERED);
$columns_cnt = PMA_DBI_num_fields($result);
// Get field information
$fields_meta = PMA_DBI_get_fields_meta($result);
for ($i = 0; $i < $columns_cnt; $i++) {
$columns[$i] = stripslashes(PMA_DBI_field_name($result, $i));
}
unset($i);
$buffer = '';
$record_cnt = 0;
while ($record = PMA_DBI_fetch_row($result)) {
$record_cnt++;
// Output table name as comment if this is the first record of the table
if ($record_cnt == 1) {
$buffer .= '// ' . $db . '.' . $table . $crlf . $crlf;
$buffer .= '[{';
} else {
$buffer .= ', {';
}
for ($i = 0; $i < $columns_cnt; $i++) {
$isLastLine = ($i + 1 >= $columns_cnt);
$column = $columns[$i];
if (is_null($record[$i])) {
$buffer .= '"' . addslashes($column)
. '": null'
. (! $isLastLine ? ',' : '');
} elseif ($fields_meta[$i]->numeric) {
$buffer .= '"' . addslashes($column)
. '": '
. $record[$i]
. (! $isLastLine ? ',' : '');
} else {
$buffer .= '"' . addslashes($column)
. '": "'
. addslashes($record[$i])
. '"'
. (! $isLastLine ? ',' : '');
}
}
$buffer .= '}';
}
if ($record_cnt) {
$buffer .= ']';
}
if (! PMA_exportOutputHandler($buffer)) {
return false;
}
PMA_DBI_free_result($result);
return true;
}
}
?>