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<?php |
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/** |
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* @package WPEmerge |
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* @author Atanas Angelov <[email protected]> |
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* @copyright 2017-2019 Atanas Angelov |
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* @license https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0 |
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* @link https://wpemerge.com/ |
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*/ |
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namespace WPEmerge\Middleware; |
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use WPEmerge\Exceptions\ConfigurationException; |
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/** |
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* Provide middleware definitions. |
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*/ |
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trait HasMiddlewareDefinitionsTrait { |
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* Middleware available to the application. |
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* |
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* @var array<string, string> |
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*/ |
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protected $middleware = []; |
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/** |
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* Middleware groups. |
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* |
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* @var array<string, string[]> |
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*/ |
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protected $middleware_groups = []; |
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/** |
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* Middleware groups that should have the 'wpemerge' and 'global' groups prepended to them. |
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* |
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* @var string[] |
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*/ |
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protected $prepend_special_groups_to = [ |
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'web', |
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'admin', |
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'ajax', |
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]; |
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/** |
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* Register middleware. |
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* |
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* @codeCoverageIgnore |
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* @param array<string, string> $middleware |
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* @return void |
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*/ |
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public function setMiddleware( $middleware ) { |
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$this->middleware = $middleware; |
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} |
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/** |
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* Register middleware groups. |
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* |
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* @codeCoverageIgnore |
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* @param array<string, string[]> $middleware_groups |
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* @return void |
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*/ |
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public function setMiddlewareGroups( $middleware_groups ) { |
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$this->middleware_groups = $middleware_groups; |
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} |
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/** |
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* Filter array of middleware into a unique set. |
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* |
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* @param array[] $middleware |
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* @return string[] |
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*/ |
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public function uniqueMiddleware( $middleware ) { |
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return array_values( array_unique( $middleware, SORT_REGULAR ) ); |
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} |
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/** |
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* Expand array of middleware into an array of fully qualified class names. |
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* |
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* @param string[] $middleware |
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* @return array[] |
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*/ |
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public function expandMiddleware( $middleware ) { |
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$classes = []; |
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foreach ( $middleware as $item ) { |
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$classes = array_merge( |
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$classes, |
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$this->expandMiddlewareMolecule( $item ) |
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); |
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} |
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return $classes; |
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} |
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/** |
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* Expand a middleware group into an array of fully qualified class names. |
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* |
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* @param string $group |
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* @return array[] |
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*/ |
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public function expandMiddlewareGroup( $group ) { |
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if ( ! isset( $this->middleware_groups[ $group ] ) ) { |
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throw new ConfigurationException( 'Unknown middleware group "' . $group . '" used.' ); |
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} |
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$middleware = $this->middleware_groups[ $group ]; |
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if ( in_array( $group, $this->prepend_special_groups_to, true ) ) { |
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$middleware = array_merge( ['wpemerge', 'global'], $middleware ); |
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} |
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return $this->expandMiddleware( $middleware ); |
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} |
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/** |
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* Expand middleware into an array of fully qualified class names and any companion arguments. |
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* |
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* @param string $middleware |
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* @return array[] |
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*/ |
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public function expandMiddlewareMolecule( $middleware ) { |
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$pieces = explode( ':', $middleware, 2 ); |
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if ( count( $pieces ) > 1 ) { |
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return [array_merge( [$this->expandMiddlewareAtom( $pieces[0] )], explode( ',', $pieces[1] ) )]; |
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} |
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if ( isset( $this->middleware_groups[ $middleware ] ) ) { |
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return $this->expandMiddlewareGroup( $middleware ); |
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} |
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return [[$this->expandMiddlewareAtom( $middleware )]]; |
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} |
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/** |
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* Expand a single middleware a fully qualified class name. |
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* |
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* @param string $middleware |
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* @return string |
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*/ |
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public function expandMiddlewareAtom( $middleware ) { |
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if ( isset( $this->middleware[ $middleware ] ) ) { |
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return $this->middleware[ $middleware ]; |
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} |
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if ( class_exists( $middleware ) ) { |
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return $middleware; |
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} |
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throw new ConfigurationException( 'Unknown middleware "' . $middleware . '" used.' ); |
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} |
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} |
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