defaults = $defaults; $this->constraints = $constraints; $this->aliases = $aliases; if ($filters !== null) { foreach ($filters as $name => $filter) { if (!$filter instanceof FilterInterface) { throw new Exception\InvalidArgumentException('Cannot use ' . gettype($filters) . ' as filter for ' . __CLASS__); } $this->filters[$name] = $filter; } } if ($validators !== null) { foreach ($validators as $name => $validator) { if (!$validator instanceof ValidatorInterface) { throw new Exception\InvalidArgumentException('Cannot use ' . gettype($validator) . ' as validator for ' . __CLASS__); } $this->validators[$name] = $validator; } } $this->parts = $this->parseDefinition($route); } /** * Parse a route definition. * * @param string $def * @return array * @throws Exception\InvalidArgumentException */ protected function parseDefinition($def) { $def = trim($def); $pos = 0; $length = strlen($def); $parts = array(); $unnamedGroupCounter = 1; while ($pos < $length) { /** * Optional value param, i.e. * [SOMETHING] */ if (preg_match('/\G\[(?P[A-Z][A-Z0-9\_\-]*?)\](?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => strtolower($m['name']), 'literal' => false, 'required' => false, 'positional' => true, 'hasValue' => true, ); } /** * Mandatory value param, i.e. * SOMETHING */ elseif (preg_match('/\G(?P[A-Z][A-Z0-9\_\-]*?)(?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => strtolower($m['name']), 'literal' => false, 'required' => true, 'positional' => true, 'hasValue' => true, ); } /** * Optional literal param, i.e. * [something] */ elseif (preg_match('/\G\[ *?(?P[a-zA-Z][a-zA-Z0-9\_\-\:]*?) *?\](?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'literal' => true, 'required' => false, 'positional' => true, 'hasValue' => false, ); } /** * Optional value param, syntax 2, i.e. * [] */ elseif (preg_match('/\G\[ *\<(?P[a-zA-Z][a-zA-Z0-9\_\-]*?)\> *\](?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'literal' => false, 'required' => false, 'positional' => true, 'hasValue' => true, ); } /** * Mandatory value param, i.e. * */ elseif (preg_match('/\G\< *(?P[a-zA-Z][a-zA-Z0-9\_\-]*?) *\>(?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'literal' => false, 'required' => true, 'positional' => true, 'hasValue' => true, ); } /** * Mandatory literal param, i.e. * something */ elseif (preg_match('/\G(?P[a-zA-Z][a-zA-Z0-9\_\-\:]*?)(?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'literal' => true, 'required' => true, 'positional' => true, 'hasValue' => false, ); } /** * Mandatory long param * --param= * --param=whatever */ elseif (preg_match('/\G--(?P[a-zA-Z0-9][a-zA-Z0-9\_\-]+)(?P=\S*?)?(?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'short' => false, 'literal' => false, 'required' => true, 'positional' => false, 'hasValue' => !empty($m['hasValue']), ); } /** * Optional long flag * [--param] */ elseif (preg_match( '/\G\[ *?--(?P[a-zA-Z0-9][a-zA-Z0-9\_\-]+) *?\](?: +|$)/s', $def, $m, 0, $pos )) { $item = array( 'name' => $m['name'], 'short' => false, 'literal' => false, 'required' => false, 'positional' => false, 'hasValue' => false, ); } /** * Optional long param * [--param=] * [--param=whatever] */ elseif (preg_match( '/\G\[ *?--(?P[a-zA-Z0-9][a-zA-Z0-9\_\-]+)(?P=\S*?)? *?\](?: +|$)/s', $def, $m, 0, $pos )) { $item = array( 'name' => $m['name'], 'short' => false, 'literal' => false, 'required' => false, 'positional' => false, 'hasValue' => !empty($m['hasValue']), ); } /** * Mandatory short param * -a * -a=i * -a=s * -a=w */ elseif (preg_match('/\G-(?P[a-zA-Z0-9])(?:=(?P[ns]))?(?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'short' => true, 'literal' => false, 'required' => true, 'positional' => false, 'hasValue' => !empty($m['type']) ? $m['type'] : null, ); } /** * Optional short param * [-a] * [-a=n] * [-a=s] */ elseif (preg_match('/\G\[ *?-(?P[a-zA-Z0-9])(?:=(?P[ns]))? *?\](?: +|$)/s', $def, $m, 0, $pos)) { $item = array( 'name' => $m['name'], 'short' => true, 'literal' => false, 'required' => false, 'positional' => false, 'hasValue' => !empty($m['type']) ? $m['type'] : null, ); } /** * Optional literal param alternative * [ something | somethingElse | anotherOne ] * [ something | somethingElse | anotherOne ]:namedGroup */ elseif (preg_match('/ \G \[ (?P (?: \ *? (?P[a-zA-Z][a-zA-Z0-9_\-]*?) \ *? (?:\||(?=\])) \ *? )+ ) \] (?:\:(?P[a-zA-Z0-9]+))? (?:\ +|$) /sx', $def, $m, 0, $pos ) ) { // extract available options $options = preg_split('/ *\| */', trim($m['options']), 0, PREG_SPLIT_NO_EMPTY); // remove dupes array_unique($options); // prepare item $item = array( 'name' => isset($m['groupName']) ? $m['groupName'] : 'unnamedGroup' . $unnamedGroupCounter++, 'literal' => true, 'required' => false, 'positional' => true, 'alternatives' => $options, 'hasValue' => false, ); } /** * Required literal param alternative * ( something | somethingElse | anotherOne ) * ( something | somethingElse | anotherOne ):namedGroup */ elseif (preg_match('/ \G \( (?P (?: \ *? (?P[a-zA-Z][a-zA-Z0-9_\-]+) \ *? (?:\||(?=\))) \ *? )+ ) \) (?:\:(?P[a-zA-Z0-9]+))? (?:\ +|$) /sx', $def, $m, 0, $pos )) { // extract available options $options = preg_split('/ *\| */', trim($m['options']), 0, PREG_SPLIT_NO_EMPTY); // remove dupes array_unique($options); // prepare item $item = array( 'name' => isset($m['groupName']) ? $m['groupName']:'unnamedGroupAt' . $unnamedGroupCounter++, 'literal' => true, 'required' => true, 'positional' => true, 'alternatives' => $options, 'hasValue' => false, ); } /** * Required long/short flag alternative * ( --something | --somethingElse | --anotherOne | -s | -a ) * ( --something | --somethingElse | --anotherOne | -s | -a ):namedGroup */ elseif (preg_match('/ \G \( (?P (?: \ *? \-+(?P[a-zA-Z0-9][a-zA-Z0-9_\-]*?) \ *? (?:\||(?=\))) \ *? )+ ) \) (?:\:(?P[a-zA-Z0-9]+))? (?:\ +|$) /sx', $def, $m, 0, $pos )) { // extract available options $options = preg_split('/ *\| */', trim($m['options']), 0, PREG_SPLIT_NO_EMPTY); // remove dupes array_unique($options); // remove prefix array_walk($options, function (&$val) { $val = ltrim($val, '-'); }); // prepare item $item = array( 'name' => isset($m['groupName']) ? $m['groupName']:'unnamedGroupAt' . $unnamedGroupCounter++, 'literal' => false, 'required' => true, 'positional' => false, 'alternatives' => $options, 'hasValue' => false, ); } /** * Optional flag alternative * [ --something | --somethingElse | --anotherOne | -s | -a ] * [ --something | --somethingElse | --anotherOne | -s | -a ]:namedGroup */ elseif (preg_match('/ \G \[ (?P (?: \ *? \-+(?P[a-zA-Z0-9][a-zA-Z0-9_\-]*?) \ *? (?:\||(?=\])) \ *? )+ ) \] (?:\:(?P[a-zA-Z0-9]+))? (?:\ +|$) /sx', $def, $m, 0, $pos )) { // extract available options $options = preg_split('/ *\| */', trim($m['options']), 0, PREG_SPLIT_NO_EMPTY); // remove dupes array_unique($options); // remove prefix array_walk($options, function (&$val) { $val = ltrim($val, '-'); }); // prepare item $item = array( 'name' => isset($m['groupName']) ? $m['groupName']:'unnamedGroupAt' . $unnamedGroupCounter++, 'literal' => false, 'required' => false, 'positional' => false, 'alternatives' => $options, 'hasValue' => false, ); } else { throw new Exception\InvalidArgumentException( 'Cannot understand Console route at "' . substr($def, $pos) . '"' ); } $pos += strlen($m[0]); $parts[] = $item; } return $parts; } /** * Returns list of names representing single parameter * * @param string $name * @return string */ private function getAliases($name) { $namesToMatch = array($name); foreach ($this->aliases as $alias => $canonical) { if ($name == $canonical) { $namesToMatch[] = $alias; } } return $namesToMatch; } /** * Returns canonical name of a parameter * * @param string $name * @return string */ private function getCanonicalName($name) { if (isset($this->aliases[$name])) { return $this->aliases[$name]; } return $name; } /** * Match parameters against route passed to constructor * * @param array $params * @return array|null */ public function match($params) { $matches = array(); /* * Extract positional and named parts */ $positional = $named = array(); foreach ($this->parts as &$part) { if ($part['positional']) { $positional[] = &$part; } else { $named[] = &$part; } } /* * Scan for named parts inside Console params */ foreach ($named as &$part) { /* * Prepare match regex */ if (isset($part['alternatives'])) { // an alternative of flags $regex = '/^\-+(?P'; $alternativeAliases = array(); foreach ($part['alternatives'] as $alternative) { $alternativeAliases[] = '(?:' . implode('|', $this->getAliases($alternative)) . ')'; } $regex .= implode('|', $alternativeAliases); if ($part['hasValue']) { $regex .= ')(?:\=(?P.*?)$)?$/'; } else { $regex .= ')$/i'; } } else { // a single named flag $name = '(?:' . implode('|', $this->getAliases($part['name'])) . ')'; if ($part['short'] === true) { // short variant if ($part['hasValue']) { $regex = '/^\-' . $name . '(?:\=(?P.*?)$)?$/i'; } else { $regex = '/^\-' . $name . '$/i'; } } elseif ($part['short'] === false) { // long variant if ($part['hasValue']) { $regex = '/^\-{2,}' . $name . '(?:\=(?P.*?)$)?$/i'; } else { $regex = '/^\-{2,}' . $name . '$/i'; } } } /* * Look for param */ $value = $param = null; for ($x = 0, $count = count($params); $x < $count; $x++) { if (preg_match($regex, $params[$x], $m)) { // found param $param = $params[$x]; // prevent further scanning of this param array_splice($params, $x, 1); if (isset($m['value'])) { $value = $m['value']; } if (isset($m['name'])) { $matchedName = $this->getCanonicalName($m['name']); } break; } } if (!$param) { /* * Drop out if that was a mandatory param */ if ($part['required']) { return; } /* * Continue to next positional param */ else { continue; } } /* * Value for flags is always boolean */ if ($param && !$part['hasValue']) { $value = true; } /* * Try to retrieve value if it is expected */ if ((null === $value || "" === $value) && $part['hasValue']) { if ($x < count($params)+1 && isset($params[$x])) { // retrieve value from adjacent param $value = $params[$x]; // prevent further scanning of this param array_splice($params, $x, 1); } else { // there are no more params available return; } } /* * Validate the value against constraints */ if ($part['hasValue'] && isset($this->constraints[$part['name']])) { if ( !preg_match($this->constraints[$part['name']], $value) ) { // constraint failed return; } } /* * Store the value */ if ($part['hasValue']) { $matches[$part['name']] = $value; } else { $matches[$part['name']] = true; } /* * If there are alternatives, fill them */ if (isset($part['alternatives'])) { if ($part['hasValue']) { foreach ($part['alternatives'] as $alt) { if ($alt === $matchedName && !isset($matches[$alt])) { $matches[$alt] = $value; } elseif (!isset($matches[$alt])) { $matches[$alt] = null; } } } else { foreach ($part['alternatives'] as $alt) { if ($alt === $matchedName && !isset($matches[$alt])) { $matches[$alt] = isset($this->defaults[$alt])? $this->defaults[$alt] : true; } elseif (!isset($matches[$alt])) { $matches[$alt] = false; } } } } } /* * Scan for left-out flags that should result in a mismatch */ foreach ($params as $param) { if (preg_match('#^\-+#', $param)) { return; // there is an unrecognized flag } } /* * Go through all positional params */ $argPos = 0; foreach ($positional as &$part) { /* * Check if param exists */ if (!isset($params[$argPos])) { if ($part['required']) { // cannot find required positional param return; } else { // stop matching break; } } $value = $params[$argPos]; /* * Check if literal param matches */ if ($part['literal']) { if ( (isset($part['alternatives']) && !in_array($value, $part['alternatives'])) || (!isset($part['alternatives']) && $value != $part['name']) ) { return; } } /* * Validate the value against constraints */ if ($part['hasValue'] && isset($this->constraints[$part['name']])) { if ( !preg_match($this->constraints[$part['name']], $value) ) { // constraint failed return; } } /* * Store the value */ if ($part['hasValue']) { $matches[$part['name']] = $value; } elseif (isset($part['alternatives'])) { // from all alternatives set matching parameter to TRUE and the rest to FALSE foreach ($part['alternatives'] as $alt) { if ($alt == $value) { $matches[$alt] = isset($this->defaults[$alt])? $this->defaults[$alt] : true; } else { $matches[$alt] = false; } } // set alternatives group value $matches[$part['name']] = $value; } elseif (!$part['required']) { // set optional parameter flag $name = $part['name']; $matches[$name] = isset($this->defaults[$name])? $this->defaults[$name] : true; } /* * Advance to next argument */ $argPos++; } /* * Check if we have consumed all positional parameters */ if ($argPos < count($params)) { return; // there are extraneous params that were not consumed } /* * Any optional flags that were not entered have value false */ foreach ($this->parts as &$part) { if (!$part['required'] && !$part['hasValue']) { if (!isset($matches[$part['name']])) { $matches[$part['name']] = false; } // unset alternatives also should be false if (isset($part['alternatives'])) { foreach ($part['alternatives'] as $alt) { if (!isset($matches[$alt])) { $matches[$alt] = false; } } } } } // run filters foreach ($matches as $name => $value) { if (isset($this->filters[$name])) { $matches[$name] = $this->filters[$name]->filter($value); } } // run validators $valid = true; foreach ($matches as $name => $value) { if (isset($this->validators[$name])) { $valid &= $this->validators[$name]->isValid($value); } } if (!$valid) { return; } return array_replace($this->defaults, $matches); } }