80 lines
2.2 KiB
PHP
80 lines
2.2 KiB
PHP
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\DependencyResolver;
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use Composer\DependencyResolver\RelationConstraint\RelationConstraintInterface;
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/**
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* A package pool contains repositories that provide packages.
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*
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* @author Nils Adermann <naderman@naderman.de>
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*/
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class Pool
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{
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protected $repositories = array();
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protected $packages = array();
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protected $packageByName = array();
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/**
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* Adds a repository and its packages to this package pool
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*
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* @param RepositoryInterface $repo A package repository
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*/
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public function addRepository(RepositoryInterface $repo)
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{
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$this->repositories[] = $repo;
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foreach ($repo->getPackages() as $package) {
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$this->packages[$package->getId()] = $package;
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foreach ($package->getNames() as $name) {
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if (!isset($this->packageByName[$name])) {
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$this->packageByNameByName[$name] = array();
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}
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$this->packageByName[$name][] = $package;
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}
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}
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}
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/**
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* Searches all packages providing the given package name and match the constraint
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*
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* @param string $name The package name to be searched for
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* @param RelationConstraintInterface $constraint A constraint that all returned
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* packages must match or null to return all
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* @return array A set of packages
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*/
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public function whatProvides($name, RelationConstraintInterface $constraint = null)
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{
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if (!isset($this->packageByName[$name])) {
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return array();
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}
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$candidates = $this->packageByName[$name];
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if (null === $constraint) {
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return $candidates;
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}
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$result = array();
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foreach ($candidates as $candidate) {
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if ($candidate->matches($name, $constraint)) {
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$result[] = $candidate;
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}
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}
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return $result;
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}
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}
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