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<?php |
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namespace Spinen\BrowserFilter\Route; |
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use Illuminate\Http\Request; |
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use Spinen\BrowserFilter\Filter; |
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/** |
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* Class RouteFilter |
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* |
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* @package Spinen\BrowserFilter\Route |
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*/ |
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abstract class RouteFilter extends Filter |
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{ |
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/** |
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* Loop through all of the parameters in the string and process them. |
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* |
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* @param string $filter The filter separated by '/' |
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* |
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* @return void |
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*/ |
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private function extractRule($filter) |
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{ |
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list($device, $browser, $operator_versions) = array_pad(array_filter(explode('/', $filter, 3)), 3, '*'); |
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// Apply rule to all browsers of the device |
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if ('*' === $browser) { |
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$this->rules[$device] = '*'; |
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return; |
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} |
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// Apply rule to all versions of the browser |
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if ('*' === $operator_versions) { |
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$this->rules[$device][$browser] = '*'; |
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return; |
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} |
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$this->rules[$device][$browser] = $this->extractVersions($device, $browser, $operator_versions); |
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} |
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/** |
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* Loop through all of the versions in the string and process them. |
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* |
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* @param string $device The device |
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* @param string $browser The browser |
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* @param string $operator_versions The versions separated by '|' |
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* |
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* @return array |
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*/ |
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private function extractVersions($device, $browser, $operator_versions) |
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{ |
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// Were there existing rules for the browser? |
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$versions = empty($this->getRules()[$device][$browser]) ? [] : $this->getRules()[$device][$browser]; |
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foreach (array_filter(explode('|', $operator_versions)) as $operator_version) { |
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// Remove everything to the leading numbers |
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$version = preg_replace("/^[^\\d]*/u", "", $operator_version); |
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// Default no operator to equals |
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$operator = str_replace($version, '', $operator_version) ?: '='; |
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$versions[$operator] = $version; |
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} |
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return $versions; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function generateCacheKey(Request $request) |
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{ |
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return parent::generateCacheKey($request) . ':' . $this->getFilterType() . ':' . md5($request->path()); |
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} |
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/** |
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* Generate the key to use to cache the processed filter string into an array. |
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* |
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* @param string $filter_string The filters separated by ';' |
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* |
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* @return string |
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*/ |
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private function generateFilterStringCacheKey($filter_string) |
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{ |
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return 'filter_string:' . md5($filter_string); |
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} |
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/** |
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* Loop through all of the filters in the string and process them. |
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* |
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* @param string $filter_string The filters separated by ';' |
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* |
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* @return void |
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*/ |
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public function parseFilterString($filter_string) |
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{ |
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if (empty($filter_string)) { |
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return; |
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} |
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$cache_key = $this->generateFilterStringCacheKey($filter_string); |
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$this->rules = $this->cache->get($cache_key, []); |
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if ($this->rules !== []) { |
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return; |
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} |
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array_map([$this, 'extractRule'], array_filter(explode(';', $filter_string))); |
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$this->cache->put($cache_key, $this->rules, $this->getCacheTimeout()); |
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} |
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} |
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spinen /
laravel-browser-filter
