Add command check-platform-reqs

src/Composer/Command/CheckPlatformReqsCommand.php

@@ -0,0 +1,113 @@
+<?php
+
+namespace Composer\Command;
+
+use Composer\Package\Link;
+use Composer\Package\PackageInterface;
+use Composer\Semver\Constraint\Constraint;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Composer\Repository\PlatformRepository;
+
+class CheckPlatformReqsCommand extends BaseCommand
+{
+    protected function configure()
+    {
+        $this->setName('check-platform-reqs')
+            ->setDescription('Check platform requirements of your project.')
+            ->setHelp(<<<EOT
+<info>php composer.phar check-platform-reqs</info>
+EOT
+            );
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $composer = $this->getComposer();
+
+        $repos = $composer->getRepositoryManager()->getLocalRepository();
+
+        $allPackages = array_merge($repos->getPackages(), array($composer->getPackage()));
+        $requires    = array();
+
+        /**
+         * @var PackageInterface $package
+         */
+        foreach ($allPackages as $package) {
+            $requires = array_merge($requires, $package->getRequires());
+        }
+
+        $platformRepo = new PlatformRepository(array(), array());
+
+        $currentPlatformPackages = $platformRepo->getPackages();
+
+        $currentPlatformPackageMap = array();
+
+        /**
+         * @var PackageInterface $currentPlatformPackage
+         */
+        foreach ($currentPlatformPackages as $currentPlatformPackage) {
+            $currentPlatformPackageMap[$currentPlatformPackage->getName()] = $currentPlatformPackage;
+        }
+
+        $results = array();
+
+        /**
+         * @var Link $require
+         */
+        foreach ($requires as $key => $require) {
+            if (preg_match(PlatformRepository::PLATFORM_PACKAGE_REGEX, $key)) {
+                if (isset($currentPlatformPackageMap[$key])) {
+                    // 检查版本
+                    $version = $currentPlatformPackageMap[$key]->getVersion();
+                    if (!$require->getConstraint()->matches(new Constraint('<=', $version))) {
+                        $results[] = [
+                            $require,
+                            $currentPlatformPackageMap[$key],
+                            'failed',
+                        ];
+                    } else {
+                        $results[] = [
+                            $require,
+                            $currentPlatformPackageMap[$key],
+                            'success',
+                        ];
+                    }
+                } else {
+                    $results[] = [
+                        $require,
+                        null,
+                        'miss',
+                    ];
+                }
+            }
+        }
+
+        $this->printTable($output, $results);
+
+    }
+
+    protected function printTable(OutputInterface $output, $results)
+    {
+        $table = array();
+        $rows  = array();
+        foreach ($results as $result) {
+            /**
+             * @var PackageInterface $platformPackage
+             * @var Link             $require
+             */
+            list($require, $platformPackage, $reason) = $result;
+            $version = (strpos($platformPackage->getPrettyVersion(), 'No version set') === 0) ? '-' : $platformPackage->getPrettyVersion();
+            $rows[]  = [$platformPackage->getPrettyName(), $version, $require->getDescription(), sprintf('%s (%s)', $require->getTarget(), $require->getPrettyConstraint()), $reason];
+        }
+        $table = array_merge($rows, $table);
+
+        // Render table
+        $renderer = new Table($output);
+        $renderer->setStyle('compact');
+        $renderer->getStyle()->setVerticalBorderChar('');
+        $renderer->getStyle()->setCellRowContentFormat('%s  ');
+        $renderer->setRows($table)->render();
+    }
+}

src/Composer/Console/Application.php

@@ -397,6 +397,7 @@ class Application extends BaseApplication
             new Command\HomeCommand(),
             new Command\ExecCommand(),
             new Command\OutdatedCommand(),
+            new Command\CheckPlatformReqsCommand(),
         ));
 
         if ('phar:' === substr(__FILE__, 0, 5)) {