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Filename : Shuttle_Dumper_ShellCommand.php
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<?php

namespace App\Helpers\Dumper;

use App\Helpers\Dumper;
use App\Helpers\Dumper\Shuttle_Dump_File;

class Shuttle_Dumper_ShellCommand extends Dumper\Shuttle_Dumper
{
    public function dump($export_file_location, $table_prefix = '')
    {
        $command = 'mysqldump -h ' . escapeshellarg($this->db->host) .
            ' -u ' . escapeshellarg($this->db->username) .
            ' --password=' . escapeshellarg($this->db->password) .
            ' ' . escapeshellarg($this->db->name);
        $include_all_tables = empty($table_prefix) &&
            empty($this->include_tables) &&
            empty($this->exclude_tables);
        if (!$include_all_tables) {
            $tables = $this->get_tables($table_prefix);
            $command .= ' ' . implode(' ', array_map('escapeshellarg', $tables));
        }
        $error_file = tempnam(sys_get_temp_dir(), 'err');
        $command .= ' 2> ' . escapeshellarg($error_file);
        if (Shuttle_Dump_File::is_gzip($export_file_location)) {
            $command .= ' | gzip';
        }
        $command .= ' > ' . escapeshellarg($export_file_location);
        exec($command, $output, $return_val);
        if ($return_val != 0) {
            $error_text = file_get_contents($error_file);
            unlink($error_file);
            throw new Shuttle_Exception('Couldn\'t export database: ' . $error_text);
        }
        unlink($error_file);
    }
}