/**
* Performs a pattern matching pass on an input string, checking
* whether it matches a given pattern based on the AIML specification.
*
* @param string $pattern Pattern to match.
* @param string $input Input string to check.
* @return bool True if the string matches the pattern, false otherwise.
**/
function aiml_pattern_match($pattern, $input)
{
if (empty($input)) {
return false;
}
$pattern_regex = build_wildcard_RegEx(_strtolower($pattern));
return preg_match($pattern_regex, _strtolower($input)) === 1;
}
/**
* Takes all the sql results passed to the function and filters out the irrelevant ones
*
* @param array $convoArr
* @param array $allrows
* @param string $lookingfor
* @internal param string $current_thatpattern
* @internal param string $current_topic
* @return array
**/
function unset_all_bad_pattern_matches($convoArr, $allrows, $lookingfor)
{
global $error_response;
$lookingfor_lc = make_lc($lookingfor);
$current_topic = get_topic($convoArr);
$current_thatpattern = isset($convoArr['that'][1][1]) ? $convoArr['that'][1][1] : '';
$default_pattern = $convoArr['conversation']['default_aiml_pattern'];
$relevantRow = array();
//if default pattern keep
//if wildcard pattern matches found aiml keep
//if wildcard pattern and wildard thatpattern keep
//the end......
runDebug(__FILE__, __FUNCTION__, __LINE__, "NEW FUNC Searching through " . count($allrows) . " rows to unset bad matches", 4);
if ($allrows[0]['pattern'] == "no results" && count($allrows) == 1) {
$tmp_rows[0] = $allrows[0];
$tmp_rows[0]['score'] = 1;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Returning error as no results where found", 1);
return $tmp_rows;
}
//loop through the results array
runDebug(__FILE__, __FUNCTION__, __LINE__, 'Blue 5 to Blue leader. Starting my run now!', 4);
$i = 0;
foreach ($allrows as $all => $subrow) {
//get the pattern
$aiml_pattern = make_lc($subrow['pattern']);
$aiml_pattern_wildcards = build_wildcard_RegEx($aiml_pattern);
$default_pattern_lc = make_lc($default_pattern);
//get the that pattern
$aiml_thatpattern = make_lc($subrow['thatpattern']);
//get topic pattern
$topicMatch = FALSE;
$aiml_topic = make_lc(trim($subrow['topic']));
$current_topic_lc = make_lc($current_topic);
#Check for a matching topic
$aiml_topic_wildcards = !empty($aiml_topic) ? build_wildcard_RegEx($aiml_topic) : '';
if ($aiml_topic == '') {
$topicMatch = TRUE;
} elseif ($aiml_topic == $current_topic_lc) {
$topicMatch = TRUE;
} elseif (!empty($aiml_topic_wildcards)) {
preg_match($aiml_topic_wildcards, $current_topic_lc, $matches);
$topicMatch = count($matches) > 0 ? true : false;
} else {
$topicMatch = FALSE;
}
# check for a matching pattern
preg_match($aiml_pattern_wildcards, $lookingfor, $matches);
$aiml_patternmatch = count($matches) > 0 ? true : false;
# look for a thatpattern match
if (!empty($aiml_thatpattern)) {
$aiml_thatpattern_wildcards = build_wildcard_RegEx($aiml_thatpattern);
preg_match($aiml_thatpattern_wildcards, $current_thatpattern, $matches);
$aiml_thatpatternmatch = count($matches) > 0 ? true : false;
} else {
$aiml_thatpattern_wildcards = FALSE;
}
if ($aiml_pattern == $default_pattern_lc) {
//if it is a direct match with our default pattern then add to tmp_rows
$tmp_rows[$i]['score'] = 1;
$tmp_rows[$i]['track_score'] = "default pick up line ({$aiml_pattern} = {$default_pattern}) ";
} elseif (!$aiml_thatpattern_wildcards && $aiml_patternmatch) {
$tmp_rows[$i]['score'] = 1;
$tmp_rows[$i]['track_score'] = " no thatpattern in result and a pattern match";
} elseif ($aiml_thatpattern_wildcards && $aiml_thatpatternmatch && $aiml_patternmatch) {
$tmp_rows[$i]['score'] = 2;
$tmp_rows[$i]['track_score'] = " thatpattern match and a pattern match";
} elseif ($aiml_pattern == $lookingfor_lc) {
$tmp_rows[$i]['score'] = 1;
$tmp_rows[$i]['track_score'] = " direct pattern match";
} else {
$tmp_rows[$i]['score'] = -1;
$tmp_rows[$i]['track_score'] = "dismissing nothing is matched";
}
if ($topicMatch === FALSE) {
$tmp_rows[$i]['score'] = -1;
$tmp_rows[$i]['track_score'] = "dismissing wrong topic";
}
if ($tmp_rows[$i]['score'] >= 0) {
$relevantRow[] = $subrow;
}
$i++;
}
$rrCount = count($relevantRow);
if ($rrCount == 0) {
$i = 0;
runDebug(__FILE__, __FUNCTION__, __LINE__, "Error: FOUND NO AIML matches in DB", 1);
$relevantRow[$i]['aiml_id'] = "-1";
$relevantRow[$i]['bot_id'] = "-1";
$relevantRow[$i]['pattern'] = "no results";
$relevantRow[$i]['thatpattern'] = '';
$relevantRow[$i]['topic'] = '';
$relevantRow[$i]['score'] = 0;
}
sort2DArray("show top scoring aiml matches", $relevantRow, "good matches", 1, 10);
runDebug(__FILE__, __FUNCTION__, __LINE__, "Found " . count($relevantRow) . " relevant rows", 4);
return $relevantRow;
}