Viewing file:  ExportJson.class.php (6.74 KB) -rw-r--r--
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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 "$props/options/items/HiddenPropertyItem.class.php";
include_once "$props/options/items/BoolPropertyItem.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);
// JSON_PRETTY_PRINT is available since 5.4.0
if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
$leaf = new BoolPropertyItem();
$leaf->setName('pretty_print');
$leaf->setText(
__('Output pretty-printed JSON (Use human-readable formatting)')
);
$generalOptions->addProperty($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;
}
/**
* 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
* @param string $db_alias Aliases of db
*
* @return bool Whether it succeeded
*/
public function exportDBHeader($db, $db_alias = '')
{
if (empty($db_alias)) {
$db_alias = $db;
}
PMA_exportOutputHandler(
'// Database \'' . $db_alias . '\'' . $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
* @param string $export_type 'server', 'database', 'table'
* @param string $db_alias Aliases of db
*
* @return bool Whether it succeeded
*/
public function exportDBCreate($db, $export_type, $db_alias = '')
{
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
* @param array $aliases Aliases of db/table/columns
*
* @return bool Whether it succeeded
*/
public function exportData(
$db, $table, $crlf, $error_url, $sql_query, $aliases = array()
) {
$db_alias = $db;
$table_alias = $table;
$this->initAlias($aliases, $db_alias, $table_alias);
$result = $GLOBALS['dbi']->query(
$sql_query, null, PMA_DatabaseInterface::QUERY_UNBUFFERED
);
$columns_cnt = $GLOBALS['dbi']->numFields($result);
$columns = array();
for ($i = 0; $i < $columns_cnt; $i++) {
$col_as = $GLOBALS['dbi']->fieldName($result, $i);
if (!empty($aliases[$db]['tables'][$table]['columns'][$col_as])) {
$col_as = $aliases[$db]['tables'][$table]['columns'][$col_as];
}
$columns[$i] = stripslashes($col_as);
}
$record_cnt = 0;
while ($record = $GLOBALS['dbi']->fetchRow($result)) {
$record_cnt++;
// Output table name as comment if this is the first record of the table
if ($record_cnt == 1) {
$buffer = $crlf . '// ' . $db_alias . '.' . $table_alias
. $crlf . $crlf;
$buffer .= '[';
} else {
$buffer = ', ';
}
if (! PMA_exportOutputHandler($buffer)) {
return false;
}
$data = array();
for ($i = 0; $i < $columns_cnt; $i++) {
$data[$columns[$i]] = $record[$i];
}
if (isset($GLOBALS['json_pretty_print'])
&& $GLOBALS['json_pretty_print']
) {
$encoded = json_encode($data, JSON_PRETTY_PRINT);
} else {
$encoded = json_encode($data);
}
if (! PMA_exportOutputHandler($encoded)) {
return false;
}
}
if ($record_cnt) {
if (! PMA_exportOutputHandler(']' . $crlf)) {
return false;
}
}
$GLOBALS['dbi']->freeResult($result);
return true;
}
}
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