/**
*
* @param Yasc_Function $function
* @return bool
*/
protected function _lookup(Yasc_Function $function)
{
$annotationPattern = $function->getAnnotation()->getPattern();
// stripslashes because we need to scape some of them when we use wildcards
// like * or **.
$annotationParts = explode($this->_request->getUrlDelimiter(), stripcslashes($annotationPattern));
// regex route.
if ($annotationPattern[0] == "^") {
if (substr($annotationPattern, -1) != "\$") {
$annotationPattern .= "\$";
}
$pattern = "#" . $annotationPattern . "#i";
// slash route.
} else {
if ($annotationPattern == $this->_request->getUrlDelimiter()) {
$pattern = "#^" . self::OPTIONAL_SLASH_SUBPATTERN . "\$#";
} else {
$parsed = array();
$paramsList = array();
$paramsCounter = 0;
foreach ($annotationParts as $part) {
if (true === empty($part)) {
continue;
}
$param = null;
// extracting double asterisk **.
if ($part == "**") {
$parsed[] = self::DOUBLE_ASTERISK_SUBPATTERN;
$param = $paramsCounter;
// extracting single asterisk *.
} else {
if ($part == "*") {
$parsed[] = self::SINGLE_ASTERISK_SUBPATTERN;
$param = $paramsCounter;
// extracting named parameters :my_param.
} else {
if ($part[0] == ":") {
if (true == preg_match("/^:([^\\:]+)\$/", $part, $matches)) {
$parsed[] = self::SINGLE_ASTERISK_SUBPATTERN;
$param = $matches[1];
}
// *.* pattern.
} else {
if (false !== strpos($part, "*")) {
$subParts = explode("*", $part);
$subParsed = array();
foreach ($subParts as $subPart) {
$subParsed[] = preg_quote($subPart, "#");
}
$parsed[] = "/" . implode(self::NO_SLASH_ASTERISK_SUBPATTERN, $subParsed);
// everything else.
} else {
$parsed[] = "/" . preg_quote($part, "#");
}
}
}
}
if (null === $param) {
continue;
}
if (false === array_key_exists($paramsCounter, $paramsList) || true === is_null($paramsList[$paramsCounter])) {
$paramsList[$paramsCounter] = $param;
}
$paramsCounter++;
}
$pattern = "#^" . implode("", $parsed) . self::OPTIONAL_SLASH_SUBPATTERN . "?\$#i";
}
}
if (true == preg_match($pattern, $this->_request->getUrlPattern(), $matches)) {
$this->_pattern = $pattern;
$this->_matches = $matches;
$this->_paramsList = isset($paramsList) ? $paramsList : array();
return true;
}
return false;
}
