public static function get_response($in_input)
{
if (JxBotConverse::user_input_looks_strange($in_input)) {
return 'Your last comment looks a bit strange.';
}
// ** configurable?
/* cap general server requests (safety); should be configurable
as people have different host specs; 300 recommended for small shared host */
$cap_bot_ipm = JxBotConfig::option('sys_cap_bot_ipm', 300);
if ($cap_bot_ipm > 0) {
$stmt = JxBotDB::$db->prepare('SELECT COUNT(*) FROM log
WHERE stamp >= DATE_SUB(NOW(), INTERVAL 1 MINUTE)');
$stmt->execute();
$last_min_total = intval($stmt->fetchAll(PDO::FETCH_NUM)[0][0]);
if ($last_min_total >= $cap_bot_ipm) {
return 'Sorry, I\'m too busy to chat right now. Please come back later.';
}
}
/* count interaction */
JxBotDB::$db->exec('UPDATE stats SET interactions = interactions + 1');
/* start timer */
$start_time = microtime(true);
/* initalize tracking variables */
JxBotConverse::$match_time = 0.0;
JxBotConverse::$service_time = 0.0;
JxBotConverse::$iq_score = 0.0;
JxBotConverse::$category_stack = array();
$fault = false;
/* run the bot */
try {
$output = JxBotConverse::srai($in_input);
} catch (Exception $err) {
$output = $err->getMessage();
$fault = true;
}
/* end timer */
$end_time = microtime(true);
//print 'IQ '.JxBotConverse::$iq_score. '<br>';
/* log this interaction */
if (trim($output) == '') {
$fault = true;
}
if ($fault) {
JxBotConverse::$iq_score = -1;
}
JxBotConverse::log($in_input, $output, $end_time - $start_time, JxBotConverse::$match_time, JxBotConverse::$service_time, JxBotConverse::$iq_score);
/* return the bot response */
if ($fault) {
return 'I do apologise. I seem to be experiencing a positronic malfunction.';
}
return $output;
}
public function generate($in_context)
{
switch ($this->name) {
case 'system':
/* security implications; will not implement until reasonable
controls are developed and an on/off switch */
/* security implications; will not implement until reasonable
controls are developed and an on/off switch */
case 'javascript':
/* server-side javascript is not implemented */
break;
case 'think':
$this->text_value($in_context);
break;
case 'template':
case 'gossip':
/* doesn't do anything in this AIML interpreter
and is removed in AIML 2.0 */
/* doesn't do anything in this AIML interpreter
and is removed in AIML 2.0 */
case 'x-learn-1':
/* AIML 1 learn tag to be filtered on import and contents
passed through without further action */
return $this->text_value($in_context);
case 'random':
$count = $this->child_element_count();
$index = mt_rand(1, $count) - 1;
return $this->child_element($index)->text_value($in_context);
case 'condition':
$loop = false;
// preparation for AIML 2 loop; will need to keep a stack & check the stack so it can be toggled
// by a <loop/> element anywhere in the depth of the <li>
do {
$count = $this->child_element_count('li');
if ($count == 0) {
$predicate = $this->child_or_attr_named($in_context, 'name');
$value = JxBotConverse::predicate($predicate);
$pattern = $this->child_or_attr_named($in_context, 'value');
if (JxBotElement::matches_simple_pattern($value, $pattern)) {
return $this->text_value($in_context, array('name', 'value'));
}
} else {
$count = $this->child_element_count();
$predicate = $this->child_or_attr_named($in_context, 'name', null);
if ($predicate !== null) {
$value = JxBotConverse::predicate($predicate);
for ($i = 0; $i < $count; $i++) {
$item = $this->child_element($i);
$pattern = $item->child_or_attr_named($in_context, 'value', null);
if ($pattern === null) {
return $item->text_value($in_context, array('value'));
}
if (JxBotElement::matches_simple_pattern($value, $pattern)) {
return $item->text_value($in_context, array('value'));
}
}
} else {
for ($i = 0; $i < $count; $i++) {
$item = $this->child_element($i);
$predicate = $item->child_or_attr_named($in_context, 'name');
$value = JxBotConverse::predicate($predicate);
$pattern = $item->child_or_attr_named($in_context, 'value', null);
if ($pattern === null) {
return $item->text_value($in_context, array('value', 'name'));
}
if (JxBotElement::matches_simple_pattern($value, $pattern)) {
return $item->text_value($in_context, array('value', 'name'));
}
}
}
}
} while ($loop);
break;
case 'star':
case 'thatstar':
case 'topicstar':
$index = intval($this->child_or_attr_named($in_context, 'index', 1));
return $this->get_capture($in_context, $this->name, $index);
case 'srai':
return JxBotConverse::srai($this->text_value($in_context));
case 'sr':
/* srai star /srai */
return JxBotConverse::srai($this->get_capture($in_context, 'star', 1));
case 'bot':
case 'get':
$name = trim($this->child_or_attr_named($in_context, 'name'));
if ($name !== '') {
if ($this->name == 'get') {
return JxBotConverse::predicate($name);
} else {
if ($name == 'size') {
return JxBotNLData::pattern_count();
} else {
if ($name == 'age') {
return JxBotElement::compute_age();
} else {
if ($name == 'birthday') {
return JxBotElement::birthday();
} else {
return JxBotConfig::predicate($name);
}
}
}
}
}
break;
case 'tag':
/* non-standard Tag feature */
$name = trim($this->child_or_attr_named($in_context, 'name'));
return $in_context->tag_value($name);
case 'id':
return JxBotConverse::predicate('id');
case 'size':
/* we return the number of patterns, which is equivalent to AIML standard
category count; since in JxBot one category != one pattern. */
return JxBotNLData::pattern_count();
case 'vocabulary':
return JxBotNLData::word_count();
case 'version':
return JxBot::VERSION;
case 'program':
return JxBot::PROGRAM . ' ' . JxBot::VERSION;
case 'set':
$name = trim($this->child_or_attr_named($in_context, 'name'));
if ($name != '') {
$value = $this->text_value($in_context, array('name'));
JxBotConverse::set_predicate($name, $value);
return $value;
}
break;
case 'date':
$php_format = 'r';
/* default - AIML 1.0 - we specify date & time format */
return date($php_format);
case 'uppercase':
return JxBotNL::upper($this->text_value($in_context));
case 'lowercase':
return JxBotNL::lower($this->text_value($in_context));
case 'formal':
return JxBotNL::formal($this->text_value($in_context));
case 'sentence':
return JxBotNL::sentence($this->text_value($in_context));
case 'explode':
return JxBotNL::explode($this->text_value($in_context));
case 'normalize':
return JxBotNL::template_normalize($this->text_value($in_context));
case 'denormalize':
return JxBotNL::template_denormalize($this->text_value($in_context));
case 'gender':
if (count($this->children) == 0) {
return JxBotNL::remap('gender', $this->get_capture($in_context, 'star', 1));
}
return JxBotNL::remap('gender', $this->text_value($in_context));
case 'person':
if (count($this->children) == 0) {
return JxBotNL::remap('person', $this->get_capture($in_context, 'star', 1));
}
return JxBotNL::remap('person', $this->text_value($in_context));
case 'person2':
if (count($this->children) == 0) {
return JxBotNL::remap('person2', $this->get_capture($in_context, 'star', 1));
}
return JxBotNL::remap('person2', $this->text_value($in_context));
case 'map':
$map_name = $this->child_or_attr_named($in_context, 'name');
return JxBotNL::remap($map_name, $this->text_value($in_context, array('name')));
case 'that':
$indicies = JxBotElement::indicies($this->child_or_attr_named($in_context, 'index'));
$in_response = count($indicies) >= 1 ? $indicies[0] : 1;
$in_sentence = count($indicies) >= 2 ? $indicies[1] : 1;
$response = JxBotConverse::history_response($in_response - 1);
$sentences = JxBotNL::split_sentences($response);
if ($in_sentence < 1 || $in_sentence > count($sentences)) {
return '';
}
return $sentences[$in_sentence - 1];
case 'input':
$indicies = JxBotElement::indicies($this->child_or_attr_named($in_context, 'index'));
$in_request = count($indicies) >= 1 ? $indicies[0] : 1;
$in_sentence = count($indicies) >= 2 ? $indicies[1] : 1;
$request = JxBotConverse::history_request($in_request - 1);
$sentences = JxBotNL::split_sentences($request);
if ($in_sentence < 1 || $in_sentence > count($sentences)) {
return '';
}
return $sentences[$in_sentence - 1];
case 'request':
$index = intval($this->child_or_attr_named($in_context, 'index', 1));
return JxBotConverse::history_request($index - 1);
case 'response':
$index = intval($this->child_or_attr_named($in_context, 'index', 1));
return JxBotConverse::history_response($index - 1);
default:
/* push unknown content & tags through to output */
// ! REVIEW: A better policy might be to tightly control which tags are
// allowed through, or provide an appropriate system option.
return $this->flatten();
}
}