private static function sentence_respond(&$in_input)
{
/* find a category for the input */
$start_time = microtime(true);
$match = JxBotEngine::match($in_input, JxBotConverse::history_response(0), JxBotConverse::predicate('topic'));
$end_time = microtime(true);
JxBotConverse::$match_time += $end_time - $start_time;
/* check recursion */
$category = $match === false ? -1 : $match->matched_category();
$count = 0;
foreach (JxBotConverse::$category_stack as $nested_category) {
if ($nested_category == $category) {
$count++;
}
}
if ($count >= JxBotConverse::MAX_CATEGORY_NESTING) {
//print 'CATEGORY LIMIT<br>';
return '';
}
JxBotConverse::$category_stack[] = $category;
if ($match === false) {
/* no match was found; the input was not understood
and no default category is available */
$output = '???';
} else {
/* select a template at random */
//print 'MATCHED CATEGORY '.$category.'<br>';
$template = JxBotNLData::fetch_templates($category);
$count = count($template);
if ($count == 0) {
$output = '???';
} else {
if ($count == 1) {
$index = 0;
} else {
$index = mt_rand(1, $count) - 1;
}
$output = $template[$index][1];
}
if (JxBotConverse::$srai_level == 1) {
JxBotConverse::$iq_score += $match->iq_score();
}
}
/* generate the template */
$template = JxBotAiml::parse_template($output);
$output = $template->generate($match);
/* track recursion */
array_pop(JxBotConverse::$category_stack);
return $output;
}
public static function parse_template($in_template)
{
JxBotAiml::$error = '';
JxBotAiml::$root = NULL;
JxBotAiml::$stack = array();
$parser = JxBotAiml::parser_create('_template_open', '_template_close', '_template_data');
$in_template = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><template>" . $in_template . '</template>';
xml_parse($parser, $in_template, true);
xml_parser_free($parser);
return JxBotAiml::$root;
}
