/**
* Checks if the package matches the given constraint directly or through
* provided or replaced packages
*
* @param array|PackageInterface $candidate
* @param string $name Name of the package to be matched
* @param ConstraintInterface $constraint The constraint to verify
* @return int One of the MATCH* constants of this class or 0 if there is no match
*/
private function match($candidate, $name, ConstraintInterface $constraint = null)
{
$candidateName = $candidate->getName();
$candidateVersion = $candidate->getVersion();
$isDev = $candidate->getStability() === 'dev';
$isAlias = $candidate instanceof AliasPackage;
if (!$isDev && !$isAlias && isset($this->filterRequires[$name])) {
$requireFilter = $this->filterRequires[$name];
} else {
$requireFilter = new EmptyConstraint();
}
if ($candidateName === $name) {
$pkgConstraint = new Constraint('==', $candidateVersion);
if ($constraint === null || $constraint->matches($pkgConstraint)) {
return $requireFilter->matches($pkgConstraint) ? self::MATCH : self::MATCH_FILTERED;
}
return self::MATCH_NAME;
}
$provides = $candidate->getProvides();
$replaces = $candidate->getReplaces();
// aliases create multiple replaces/provides for one target so they can not use the shortcut below
if (isset($replaces[0]) || isset($provides[0])) {
foreach ($provides as $link) {
if ($link->getTarget() === $name && ($constraint === null || $constraint->matches($link->getConstraint()))) {
return $requireFilter->matches($link->getConstraint()) ? self::MATCH_PROVIDE : self::MATCH_FILTERED;
}
}
foreach ($replaces as $link) {
if ($link->getTarget() === $name && ($constraint === null || $constraint->matches($link->getConstraint()))) {
return $requireFilter->matches($link->getConstraint()) ? self::MATCH_REPLACE : self::MATCH_FILTERED;
}
}
return self::MATCH_NONE;
}
if (isset($provides[$name]) && ($constraint === null || $constraint->matches($provides[$name]->getConstraint()))) {
return $requireFilter->matches($provides[$name]->getConstraint()) ? self::MATCH_PROVIDE : self::MATCH_FILTERED;
}
if (isset($replaces[$name]) && ($constraint === null || $constraint->matches($replaces[$name]->getConstraint()))) {
return $requireFilter->matches($replaces[$name]->getConstraint()) ? self::MATCH_REPLACE : self::MATCH_FILTERED;
}
return self::MATCH_NONE;
}
/**
* Create an empty constraint instance and set pretty string.
*
* @param string $prettyString The pretty string for the constraint.
*
* @return EmptyConstraint|\Composer\Package\LinkConstraint\EmptyConstraint
* @see https://github.com/contao-community-alliance/composer-plugin/issues/44
* @see https://github.com/composer/semver/issues/17
*/
private function createEmptyConstraint($prettyString)
{
if (!class_exists('Composer\\Semver\\Constraint\\EmptyConstraint')) {
$constraint = new \Composer\Package\LinkConstraint\EmptyConstraint();
} else {
$constraint = new EmptyConstraint();
}
$constraint->setPrettyString($prettyString);
return $constraint;
}
