protected function compile($files)
{
global $CFG;
$search = array('%SOURCES%', '%DEST%');
$replace = array('"' . implode('" "', $files) . '"', '"' . onlinejudge_get_temp_dir() . '/a.out"');
// construct compiler command
$command = str_replace($search, $replace, self::$supported_languages[$this->language]);
// run compiler and redirect stderr to stdout
$output = array();
$return = 0;
exec($command . ' 2>&1', $output, $return);
$this->task->compileroutput = str_replace(onlinejudge_get_temp_dir() . '/', '', implode("\n", $output));
if ($return != 0) {
// TODO: if the command can not be executed, it should be internal error
$this->task->status = ONLINEJUDGE_STATUS_COMPILATION_ERROR;
} else {
$this->task->status = ONLINEJUDGE_STATUS_COMPILATION_OK;
}
return trim($replace[1], '"');
}
/**
* Save files of current task to a temp directory
*
* @return array of the full path of saved files
*/
protected function create_temp_files()
{
$dstfiles = array();
$fs = get_file_storage();
$files = $fs->get_area_files(get_context_instance(CONTEXT_SYSTEM)->id, 'local_onlinejudge', 'tasks', $this->task->id, 'sortorder', false);
foreach ($files as $file) {
$path = onlinejudge_get_temp_dir() . $file->get_filepath();
$fullpath = $path . $file->get_filename();
if (!check_dir_exists($path)) {
throw new moodle_exception('errorcreatingdirectory', '', '', $path);
}
$file->copy_content_to($fullpath);
$dstfiles[] = $fullpath;
}
return $dstfiles;
}