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<?php |
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/** |
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* Copyright 2014 Krzysztof Magosa |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace KM\Saffron; |
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use KM\Saffron\Route; |
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use KM\Saffron\RouteCompiled; |
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use KM\Saffron\Exception\InvalidArgument; |
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class RouteCompiler |
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{ |
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/** |
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* @param Route $route |
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* @return string |
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*/ |
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protected function getPrefix(Route $route) |
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{ |
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// @TODO make it not ugly :) |
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$pos = strpos($route->getUri(), '{'); |
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if (false !== $pos) { |
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$length = max($pos - 1, 1); |
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} else { |
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$length = strlen($route->getUri()); |
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} |
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return substr($route->getUri(), 0, $length); |
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} |
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/** |
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* @param Route $route |
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* @return string |
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*/ |
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protected function getUriRegex(Route $route) |
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{ |
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$tokens = preg_split( |
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'#([^}]?\{\w+\})#s', |
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substr($route->getUri(), 1), |
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-1, |
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PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY |
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); |
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$regex = preg_quote(substr($route->getUri(), 0, 1), '#'); |
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foreach ($tokens as $token) { |
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if (preg_match('#^(?P<delimiter>.)?\{(?P<placeholder>\w+)\}$#s', $token, $match)) { |
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$regex .= sprintf( |
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'(%s(?P<%s>%s))%s', |
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isset($match['delimiter']) ? preg_quote($match['delimiter'], '#') : '', |
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preg_quote($match['placeholder'], '#'), |
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$route->getRequirement($match['placeholder']), |
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$route->hasDefault($match['placeholder']) ? '?' : '' |
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); |
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} else { |
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$regex .= preg_quote($token, '#'); |
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} |
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} |
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return '#^'.$regex.'$#Us'; |
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} |
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/** |
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* @param Route $route |
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* @return string |
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*/ |
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protected function getDomainRegex(Route $route) |
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{ |
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$tokens = preg_split( |
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'#({\w+\}[^{]?)#s', |
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$route->getDomain(), |
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-1, |
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PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY |
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); |
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$regex = ''; |
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foreach ($tokens as $token) { |
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if (preg_match('#^\{(?P<placeholder>\w+)\}(?P<delimiter>.)?$#s', $token, $match)) { |
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$regex .= sprintf( |
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'((?P<%s>%s)%s)%s', |
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preg_quote($match['placeholder'], '#'), |
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$route->getRequirement($match['placeholder']), |
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isset($match['delimiter']) ? preg_quote($match['delimiter'], '#') : '', |
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$route->hasDefault($match['placeholder']) ? '?' : '' |
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); |
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} else { |
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$regex .= preg_quote($token, '#'); |
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} |
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} |
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return '#^'.$regex.'$#s'; |
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} |
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protected function validateRoute(Route $route) |
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{ |
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if (false !== strpos($route->getUri(), '{_') || false !== strpos($route->getDomain(), '{_')) { |
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throw new InvalidArgument( |
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sprintf( |
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'Placeholders cannot begin with _. Route: %s.', |
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$route->getName() |
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) |
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); |
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} |
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} |
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/** |
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* @param Route $route |
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* @return RouteCompiled |
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*/ |
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public function compile(Route $route) |
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{ |
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$this->validateRoute($route); |
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$compiled = new RouteCompiled( |
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$this->getPrefix($route), |
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$this->getPrefix($route) != $route->getUri() ? $this->getUriRegex($route) : null, |
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$route->hasDomain() ? $this->getDomainRegex($route) : null |
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); |
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return $compiled; |
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} |
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} |
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krzysztof-magosa /
saffron-php
