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<?php |
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/** |
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* @copyright (c) 2006-present brian ridley |
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* @author brian ridley <[email protected]> |
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* @license http://opensource.org/licenses/MIT MIT |
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*/ |
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namespace ptlis\ConNeg\Negotiator\Matcher; |
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use ptlis\ConNeg\Preference\Matched\MatchedPreference; |
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use ptlis\ConNeg\Preference\Matched\MatchedPreferenceComparator; |
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use ptlis\ConNeg\Preference\Matched\MatchedPreferenceInterface; |
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use ptlis\ConNeg\Preference\PreferenceInterface; |
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/** |
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* Matcher looking for exact variant matches. |
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*/ |
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class ExactMatcher implements MatcherInterface |
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{ |
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/** |
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* @var MatchedPreferenceComparator |
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*/ |
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private $comparator; |
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/** |
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* Constructor. |
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* |
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* @param MatchedPreferenceComparator $comparator |
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*/ |
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public function __construct(MatchedPreferenceComparator $comparator) |
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{ |
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$this->comparator = $comparator; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function hasMatch($fromField, array $matchingList, PreferenceInterface $clientPref) |
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{ |
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return $this->getMatchingIndex($matchingList, $clientPref) >= 0; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function match($fromField, array $matchingList, PreferenceInterface $clientPref) |
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{ |
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$matchIndex = $this->getMatchingIndex($matchingList, $clientPref); |
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if ($matchIndex >= 0) { |
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$newMatch = new MatchedPreference( |
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$fromField, |
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$clientPref, |
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$matchingList[$matchIndex]->getServerPreference() |
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); |
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if ($this->comparator->compare($matchingList[$matchIndex], $newMatch) > 0) { |
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$matchingList[$matchIndex] = $newMatch; |
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} |
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} |
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return $matchingList; |
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} |
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/** |
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* Returns the first index containing a matching variant, or -1 if not present. |
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* |
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* @param MatchedPreferenceInterface[] $matchingList |
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* @param PreferenceInterface $pref |
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* |
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* @return int |
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*/ |
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private function getMatchingIndex(array $matchingList, PreferenceInterface $pref) |
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{ |
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$index = -1; |
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foreach ($matchingList as $key => $match) { |
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if ($match->getVariant() === $pref->getVariant()) { |
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$index = $key; |
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} |
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} |
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return $index; |
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} |
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} |
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ptlis /
conneg
