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<?php |
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namespace Negotiation; |
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class Negotiator extends AbstractNegotiator |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function acceptFactory($accept) |
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{ |
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return new Accept($accept); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function match(AcceptHeader $accept, AcceptHeader $priority, $index) |
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{ |
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if (!$accept instanceof Accept || !$priority instanceof Accept) { |
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return null; |
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} |
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$acceptBase = $accept->getBasePart(); |
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$priorityBase = $priority->getBasePart(); |
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$acceptSub = $accept->getSubPart(); |
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$prioritySub = $priority->getSubPart(); |
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$intersection = array_intersect_assoc($accept->getParameters(), $priority->getParameters()); |
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$baseEqual = !strcasecmp($acceptBase, $priorityBase); |
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$subEqual = !strcasecmp($acceptSub, $prioritySub); |
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if (($acceptBase === '*' || $baseEqual) |
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&& ($acceptSub === '*' || $subEqual) |
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&& count($intersection) === count($accept->getParameters()) |
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) { |
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$score = 100 * $baseEqual + 10 * $subEqual + count($intersection); |
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return new Match($accept->getQuality() * $priority->getQuality(), $score, $index); |
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} |
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if (!strstr($acceptSub, '+') || !strstr($prioritySub, '+')) { |
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return null; |
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} |
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// Handle "+" segment wildcards |
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list($acceptSub, $acceptPlus) = $this->splitSubPart($acceptSub); |
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list($prioritySub, $priorityPlus) = $this->splitSubPart($prioritySub); |
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// If no wildcards in either the subtype or + segment, do nothing. |
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if (!($acceptBase === '*' || $baseEqual) |
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|| !($acceptSub === '*' || $prioritySub === '*' || $acceptPlus === '*' || $priorityPlus === '*') |
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) { |
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return null; |
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} |
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$subEqual = !strcasecmp($acceptSub, $prioritySub); |
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$plusEqual = !strcasecmp($acceptPlus, $priorityPlus); |
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if (($acceptSub === '*' || $prioritySub === '*' || $subEqual) |
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&& ($acceptPlus === '*' || $priorityPlus === '*' || $plusEqual) |
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&& count($intersection) === count($accept->getParameters()) |
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) { |
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$score = 100 * $baseEqual + 10 * $subEqual + $plusEqual + count($intersection); |
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return new Match($accept->getQuality() * $priority->getQuality(), $score, $index); |
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} |
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return null; |
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} |
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/** |
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* Split a subpart into the subpart and "plus" part. |
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* |
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* For media-types of the form "application/vnd.example+json", matching |
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* should allow wildcards for either the portion before the "+" or |
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* after. This method splits the subpart to allow such matching. |
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*/ |
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protected function splitSubPart($subPart) |
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{ |
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if (!strstr($subPart, '+')) { |
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return [$subPart, '']; |
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} |
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return explode('+', $subPart, 2); |
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} |
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} |
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willdurand /
Negotiation
