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phpMyAdmin/libraries/classes/Plugins/Export/ExportJson.php
Executable file
293
phpMyAdmin/libraries/classes/Plugins/Export/ExportJson.php
Executable file
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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 PhpMyAdmin\Plugins\Export;
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use PhpMyAdmin\DatabaseInterface;
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use PhpMyAdmin\Export;
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use PhpMyAdmin\Plugins\ExportPlugin;
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use PhpMyAdmin\Properties\Plugins\ExportPluginProperties;
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use PhpMyAdmin\Properties\Options\Groups\OptionsPropertyMainGroup;
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use PhpMyAdmin\Properties\Options\Groups\OptionsPropertyRootGroup;
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use PhpMyAdmin\Properties\Options\Items\BoolPropertyItem;
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use PhpMyAdmin\Properties\Options\Items\HiddenPropertyItem;
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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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private $first = true;
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/**
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* Constructor
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*/
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public function __construct()
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{
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$this->setProperties();
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}
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/**
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* Encodes the data into JSON
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*
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* @param mixed $data Data to encode
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*
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* @return string
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*/
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public function encode($data)
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{
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$options = 0;
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if (isset($GLOBALS['json_pretty_print'])
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&& $GLOBALS['json_pretty_print']
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) {
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$options |= JSON_PRETTY_PRINT;
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}
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if (isset($GLOBALS['json_unicode'])
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&& $GLOBALS['json_unicode']
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) {
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$options |= JSON_UNESCAPED_UNICODE;
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}
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return json_encode($data, $options);
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}
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/**
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* Sets the export JSON properties
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*
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* @return void
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*/
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protected function setProperties()
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{
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$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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$leaf = new BoolPropertyItem(
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'pretty_print',
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__('Output pretty-printed JSON (Use human-readable formatting)')
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);
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$generalOptions->addProperty($leaf);
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$leaf = new BoolPropertyItem(
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'unicode',
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__('Output unicode characters unescaped')
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);
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$generalOptions->addProperty($leaf);
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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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global $crlf;
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$meta = array(
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'type' => 'header',
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'version' => PMA_VERSION,
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'comment' => 'Export to JSON plugin for PHPMyAdmin',
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);
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return Export::outputHandler(
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'[' . $crlf . $this->encode($meta) . ',' . $crlf
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);
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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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global $crlf;
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return Export::outputHandler(']' . $crlf);
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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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global $crlf;
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if (empty($db_alias)) {
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$db_alias = $db;
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}
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$meta = array(
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'type' => 'database',
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'name' => $db_alias
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);
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return Export::outputHandler(
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$this->encode($meta) . ',' . $crlf
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);
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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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array $aliases = array()
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) {
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$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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if (! $this->first) {
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if (!Export::outputHandler(',')) {
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return false;
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}
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} else {
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$this->first = false;
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}
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$buffer = $this->encode(
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array(
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'type' => 'table',
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'name' => $table_alias,
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'database' => $db_alias,
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'data' => "@@DATA@@"
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)
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);
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list($header, $footer) = explode('"@@DATA@@"', $buffer);
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if (!Export::outputHandler($header . $crlf . '[' . $crlf)) {
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return false;
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}
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$result = $GLOBALS['dbi']->query(
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$sql_query,
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DatabaseInterface::CONNECT_USER,
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DatabaseInterface::QUERY_UNBUFFERED
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);
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$columns_cnt = $GLOBALS['dbi']->numFields($result);
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$fields_meta = $GLOBALS['dbi']->getFieldsMeta($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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if (!Export::outputHandler(',' . $crlf)) {
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return false;
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}
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}
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$data = array();
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for ($i = 0; $i < $columns_cnt; $i++) {
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if ($fields_meta[$i]->type === 'geometry') {
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// export GIS types as hex
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$record[$i] = '0x' . bin2hex($record[$i]);
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}
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$data[$columns[$i]] = $record[$i];
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}
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$encodedData = $this->encode($data);
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if (! $encodedData) {
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return false;
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}
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if (! Export::outputHandler($encodedData)) {
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return false;
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}
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}
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if (!Export::outputHandler($crlf . ']' . $crlf . $footer . $crlf)) {
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return false;
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}
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$GLOBALS['dbi']->freeResult($result);
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return true;
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}
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}
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