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238
#pma/libraries/plugins/export/ExportJson.php
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238
#pma/libraries/plugins/export/ExportJson.php
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<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Set of methods used to build dumps of tables as JSON
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*
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* @package PhpMyAdmin-Export
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* @subpackage JSON
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*/
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namespace PMA\libraries\plugins\export;
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use PMA\libraries\properties\options\items\BoolPropertyItem;
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use PMA\libraries\plugins\ExportPlugin;
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use PMA\libraries\properties\plugins\ExportPluginProperties;
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use PMA\libraries\properties\options\items\HiddenPropertyItem;
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use PMA\libraries\properties\options\groups\OptionsPropertyMainGroup;
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use PMA\libraries\properties\options\groups\OptionsPropertyRootGroup;
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use PMA;
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/**
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* Handles the export for the JSON format
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*
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* @package PhpMyAdmin-Export
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* @subpackage JSON
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*/
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class ExportJson extends ExportPlugin
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{
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/**
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* Constructor
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*/
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public function __construct()
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{
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$this->setProperties();
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}
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/**
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* Sets the export JSON properties
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*
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* @return void
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*/
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protected function setProperties()
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{
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$exportPluginProperties = new ExportPluginProperties();
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$exportPluginProperties->setText('JSON');
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$exportPluginProperties->setExtension('json');
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$exportPluginProperties->setMimeType('text/plain');
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$exportPluginProperties->setOptionsText(__('Options'));
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// create the root group that will be the options field for
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// $exportPluginProperties
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// this will be shown as "Format specific options"
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$exportSpecificOptions = new OptionsPropertyRootGroup(
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"Format Specific Options"
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);
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// general options main group
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$generalOptions = new OptionsPropertyMainGroup("general_opts");
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// create primary items and add them to the group
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$leaf = new HiddenPropertyItem("structure_or_data");
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$generalOptions->addProperty($leaf);
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// JSON_PRETTY_PRINT is available since 5.4.0
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if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
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$leaf = new BoolPropertyItem(
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'pretty_print',
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__('Output pretty-printed JSON (Use human-readable formatting)')
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);
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$generalOptions->addProperty($leaf);
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}
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// add the main group to the root group
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$exportSpecificOptions->addProperty($generalOptions);
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// set the options for the export plugin property item
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$exportPluginProperties->setOptions($exportSpecificOptions);
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$this->properties = $exportPluginProperties;
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}
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/**
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* Outputs export header
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*
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* @return bool Whether it succeeded
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*/
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public function exportHeader()
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{
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PMA_exportOutputHandler(
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'/**' . $GLOBALS['crlf']
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. ' Export to JSON plugin for PHPMyAdmin' . $GLOBALS['crlf']
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. ' @version ' . PMA_VERSION . $GLOBALS['crlf']
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. ' */' . $GLOBALS['crlf'] . $GLOBALS['crlf']
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);
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return true;
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}
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/**
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* Outputs export footer
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*
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* @return bool Whether it succeeded
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*/
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public function exportFooter()
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{
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return true;
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}
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/**
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* Outputs database header
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*
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* @param string $db Database name
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* @param string $db_alias Aliases of db
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*
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* @return bool Whether it succeeded
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*/
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public function exportDBHeader($db, $db_alias = '')
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{
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if (empty($db_alias)) {
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$db_alias = $db;
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}
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PMA_exportOutputHandler(
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'// Database \'' . $db_alias . '\'' . $GLOBALS['crlf']
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);
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return true;
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}
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/**
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* Outputs database footer
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*
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* @param string $db Database name
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*
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* @return bool Whether it succeeded
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*/
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public function exportDBFooter($db)
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{
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return true;
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}
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/**
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* Outputs CREATE DATABASE statement
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*
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* @param string $db Database name
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* @param string $export_type 'server', 'database', 'table'
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* @param string $db_alias Aliases of db
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*
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* @return bool Whether it succeeded
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*/
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public function exportDBCreate($db, $export_type, $db_alias = '')
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{
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return true;
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}
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/**
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* Outputs the content of a table in JSON format
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*
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* @param string $db database name
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* @param string $table table name
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* @param string $crlf the end of line sequence
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* @param string $error_url the url to go back in case of error
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* @param string $sql_query SQL query for obtaining data
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* @param array $aliases Aliases of db/table/columns
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*
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* @return bool Whether it succeeded
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*/
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public function exportData(
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$db,
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$table,
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$crlf,
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$error_url,
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$sql_query,
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$aliases = array()
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) {
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$db_alias = $db;
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$table_alias = $table;
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$this->initAlias($aliases, $db_alias, $table_alias);
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$result = $GLOBALS['dbi']->query(
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$sql_query,
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null,
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PMA\libraries\DatabaseInterface::QUERY_UNBUFFERED
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);
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$columns_cnt = $GLOBALS['dbi']->numFields($result);
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$columns = array();
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for ($i = 0; $i < $columns_cnt; $i++) {
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$col_as = $GLOBALS['dbi']->fieldName($result, $i);
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if (!empty($aliases[$db]['tables'][$table]['columns'][$col_as])) {
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$col_as = $aliases[$db]['tables'][$table]['columns'][$col_as];
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}
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$columns[$i] = stripslashes($col_as);
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}
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$record_cnt = 0;
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while ($record = $GLOBALS['dbi']->fetchRow($result)) {
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$record_cnt++;
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// Output table name as comment if this is the first record of the table
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if ($record_cnt == 1) {
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$buffer = $crlf . '// ' . $db_alias . '.' . $table_alias
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. $crlf . $crlf;
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$buffer .= '[';
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} else {
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$buffer = ', ';
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}
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if (!PMA_exportOutputHandler($buffer)) {
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return false;
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}
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$data = array();
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for ($i = 0; $i < $columns_cnt; $i++) {
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$data[$columns[$i]] = $record[$i];
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}
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if (isset($GLOBALS['json_pretty_print'])
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&& $GLOBALS['json_pretty_print']
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) {
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$encoded = json_encode($data, JSON_PRETTY_PRINT);
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} else {
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$encoded = json_encode($data);
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}
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if (!PMA_exportOutputHandler($encoded)) {
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return false;
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}
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}
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if ($record_cnt) {
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if (!PMA_exportOutputHandler(']' . $crlf)) {
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return false;
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}
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}
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$GLOBALS['dbi']->freeResult($result);
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return true;
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}
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}
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