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<?php |
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/** |
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* @author Gerard van Helden <[email protected]> |
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* @copyright Zicht Online <http://zicht.nl> |
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*/ |
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namespace Zicht\Bundle\UrlBundle\Url; |
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use Zicht\Bundle\UrlBundle\Aliasing\Aliasing; |
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/** |
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* Class Rewriter |
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*/ |
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class Rewriter |
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{ |
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private $localDomains = []; |
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/** |
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* Constructor |
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* |
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* @param Aliasing $aliasing |
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*/ |
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public function __construct(Aliasing $aliasing) |
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{ |
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$this->aliasing = $aliasing; |
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} |
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/** |
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* Set a list of domains in urls to consider 'local', i.e. process the 'path' while keeping the domain in tact. |
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* |
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* @param string[] $localDomains |
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*/ |
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public function setLocalDomains($localDomains) |
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{ |
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$this->localDomains = $localDomains; |
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} |
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/** |
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* Rewrite all $urls, given the $mappings map of mappings (from => to), within the context of |
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* host names $localDomains. |
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* |
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* Example: |
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* |
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* rewrite(['http://example.org/foo?x=y'], ['/foo' => '/bar'], ['example.org']); |
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* |
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* |
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* Would return the following mapping: |
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* |
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* ['http://example.org/foo?x=y' => 'http://example.org/bar?x=y'] |
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* |
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* @param string[] $urls |
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* @param string $mode |
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* @return array |
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*/ |
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public function rewrite(array $urls, $mode) |
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{ |
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$mappings = $this->aliasing->getAliasingMap( |
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array_map( |
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[$this, 'extractPath'], |
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$urls |
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), |
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$mode |
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); |
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$ret = []; |
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foreach ($urls as $url) { |
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if (isset($mappings[$url])) { |
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// early match, if the value can be mapping directly, used that. |
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$ret[$url] = $mappings[$url]; |
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continue; |
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} |
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$parts = $this->parseUrl($url); |
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if (!isset($parts['path'])) { |
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// no path, nothing to map. |
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$ret[$url] = $url; |
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continue; |
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} |
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if (isset($parts['host'])) { |
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if (!in_array($parts['host'], $this->localDomains)) { |
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// external url, don't do mapping. |
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$ret[$url] = $url; |
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continue; |
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} |
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} |
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// don't rewrite this. |
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if (isset($parts['user']) || isset($parts['password'])) { |
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$ret[$url]= $url; |
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continue; |
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} |
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$rewritten = ''; |
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if (isset($parts['scheme'])) { |
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$rewritten .= $parts['scheme'] . ':'; |
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} |
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if (isset($parts['host'])) { |
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$rewritten .= '//' . $parts['host']; |
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} |
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if (isset($parts['port'])) { |
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$rewritten .= ':' . $parts['port']; |
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} |
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if (isset($parts['path'])) { |
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if (isset($mappings[$parts['path']])) { |
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$rewritten .= $mappings[$parts['path']]; |
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} else { |
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// no match on path level, keep as-is |
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$ret[$url] = $url; |
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continue; |
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} |
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} |
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if (isset($parts['params'])) { |
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$rewritten .= '/' . $parts['params']; |
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} |
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if (isset($parts['query'])) { |
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$rewritten .= '?' . $parts['query']; |
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} |
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if (isset($parts['fragment'])) { |
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$rewritten .= '#' . $parts['fragment']; |
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} |
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$ret[$url] = $rewritten; |
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} |
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return $ret; |
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} |
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/** |
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* Extract the path of the URL which is considered for aliasing. |
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* |
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* @param string $url |
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* @return string|null |
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*/ |
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public function extractPath($url) |
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{ |
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$parts = $this->parseUrl($url); |
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if (!isset($parts['path'])) { |
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return null; |
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} |
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// ignore non-http schemes |
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if (isset($parts['scheme']) && !in_array($parts['scheme'], ['http', 'https'])) { |
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return null; |
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} |
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return $parts['path']; |
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} |
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/** |
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* Parse the url, and additionally add a 'parameters' part which is defined as follows: |
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* |
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* The parameters may occur after the path, separated by slashes, where each of the key value pairs are |
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* separated by '='. |
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* |
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* e.g.: |
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* /this/is/the/path/while=these/are=paremeters |
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* ^----- path ----^ ^------- params ---------^ |
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* |
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* @param string $url |
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* @return mixed |
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*/ |
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public function parseUrl($url) |
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{ |
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$ret = parse_url($url); |
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if (isset($ret['path'])) { |
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$parts = explode('/', $ret['path']); |
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$params = []; |
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while (false !== strpos(end($parts), '=')) { |
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array_push($params, array_pop($parts)); |
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} |
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if (count($params)) { |
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$ret['path'] = join('/', $parts); |
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$ret['params'] = join('/', $params); |
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} |
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} |
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return $ret; |
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} |
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/** |
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* This convenenience method processes the urls in the content with a structure matching the following: |
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* |
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* ['the url' => ['total string that should be replaced', 'the prefix', 'the url', 'the suffix']] |
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* |
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* e.g.: |
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* 'http://example.org/' => ['<a href="http://example.org/"', '<a href="', 'http://example.org/', '"'] |
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* |
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* It replaces contents by replacing all occurrences of the 0 index with the 1 index, concatenated with the |
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* rewritten url, and the suffix. |
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* |
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* @param string $content |
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* @param string $mode |
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* @param mixed $matchedGroups |
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* @return string |
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*/ |
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public function rewriteMatches($content, $mode, $matchedGroups) |
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{ |
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$replacements = []; |
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foreach ($this->rewrite(array_keys($matchedGroups), $mode) as $from => $to) { |
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if (isset($matchedGroups[$from]) && $from !== $to) { |
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foreach ($matchedGroups[$from] as list($source, $prefix, $oldUrl, $suffix)) { |
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$replacements[$source] = $prefix . $to . $suffix; |
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} |
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} |
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} |
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return strtr($content, $replacements); |
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} |
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} |
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zicht /
url-bundle
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