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<?php |
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/* |
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* Copyright 2012 Johannes M. Schmitt <[email protected]> |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace JMS\Composer\Graph; |
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use JMS\Composer\Graph\PackageNode; |
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/** |
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* Graph of dependencies. |
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* |
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* @author Johannes M. Schmitt <[email protected]> |
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*/ |
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class DependencyGraph |
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{ |
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/** |
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* @var PackageNode[] |
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*/ |
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private $packages = array(); |
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/** |
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* @var PackageNode |
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*/ |
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private $rootPackage; |
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/** |
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* @param PackageNode|null $rootPackage |
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*/ |
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public function __construct(PackageNode $rootPackage = null) |
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{ |
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if (null !== $rootPackage) { |
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$this->packages[strtolower($rootPackage->getName())] = $rootPackage; |
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} |
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$this->rootPackage = $rootPackage ?: $this->getOrCreate('__root'); |
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} |
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/** |
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* @return PackageNode |
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*/ |
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public function getRootPackage() |
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{ |
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return $this->rootPackage; |
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} |
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/** |
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* @param PackageNode $node |
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* |
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* @return bool |
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*/ |
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public function isRootPackage(PackageNode $node) |
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{ |
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return $node === $this->rootPackage; |
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} |
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/** |
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* @param string $name |
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* @return bool |
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*/ |
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public function isRootPackageName($name) |
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{ |
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return strtolower($this->rootPackage->getName()) === strtolower($name); |
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} |
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/** |
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* @return PackageNode[] |
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*/ |
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public function getPackages() |
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{ |
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return $this->packages; |
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} |
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/** |
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* @param string $name |
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* |
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* @return PackageNode|null |
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*/ |
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public function getPackage($name) |
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{ |
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return isset($this->packages[$name = strtolower($name)]) ? $this->packages[$name] : null; |
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} |
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/** |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function hasPackage($name) |
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{ |
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return isset($this->packages[strtolower($name)]); |
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} |
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/** |
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* @param string $name |
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* @param array $data |
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* |
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* @throws \InvalidArgumentException |
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* @return PackageNode |
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*/ |
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public function createPackage($name, array $data = array()) |
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{ |
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if (isset($this->packages[strtolower($name)])) { |
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throw new \InvalidArgumentException(sprintf('The package "%s" already exists.', $name)); |
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} |
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return $this->packages[strtolower($name)] = new PackageNode($name, $data); |
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} |
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/** |
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* @param string $packageA |
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* @param string $packageB |
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* @param string $versionConstraint |
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*/ |
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public function connect($packageA, $packageB, $versionConstraint) |
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{ |
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$nodeA = $this->getOrCreate($packageA); |
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$nodeB = $this->getOrCreate($packageB); |
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// Do not connect the same package |
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if ($packageA === $packageB){ |
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return; |
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} |
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// Do not add duplicate connections. |
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foreach ($nodeA->getOutEdges() as $edge) { |
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if ($edge->getDestPackage() === $nodeB) { |
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return; |
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} |
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} |
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$edge = new DependencyEdge($nodeA, $nodeB, $versionConstraint); |
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$nodeA->addOutEdge($edge); |
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$nodeB->addInEdge($edge); |
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} |
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/** |
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* Searches the graph for an aggregate package that contains the given package. |
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* |
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* @param string $packageName the name of the contained package |
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* |
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* @return PackageNode|null the aggregate package |
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*/ |
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public function getAggregatePackageContaining($packageName) |
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{ |
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foreach ($this->packages as $packageNode) { |
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if ($packageNode->replaces($packageName)) { |
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return $packageNode; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $package |
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* |
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* @return PackageNode |
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*/ |
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private function getOrCreate($package) |
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{ |
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if (isset($this->packages[strtolower($package)])) { |
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return $this->packages[strtolower($package)]; |
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} |
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return $this->packages[strtolower($package)] = new PackageNode($package); |
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} |
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} |
schmittjoh /
composer-deps-analyzer
