Use Terminal class for dimensions post Symfony 3.2

src/Composer/Command/ShowCommand.php

@@ -12,32 +12,33 @@
 
 namespace Composer\Command;
 
-use Composer\DependencyResolver\Pool;
+use Composer\Composer;
 use Composer\DependencyResolver\DefaultPolicy;
+use Composer\DependencyResolver\Pool;
 use Composer\Json\JsonFile;
+use Composer\Package\BasePackage;
 use Composer\Package\CompletePackageInterface;
+use Composer\Package\PackageInterface;
 use Composer\Package\Version\VersionParser;
-use Composer\Package\BasePackage;
 use Composer\Package\Version\VersionSelector;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
-use Composer\Package\PackageInterface;
+use Composer\Repository\ArrayRepository;
+use Composer\Repository\ComposerRepository;
+use Composer\Repository\CompositeRepository;
+use Composer\Repository\PlatformRepository;
+use Composer\Repository\RepositoryFactory;
+use Composer\Repository\RepositoryInterface;
 use Composer\Semver\Constraint\ConstraintInterface;
+use Composer\Semver\Semver;
+use Composer\Spdx\SpdxLicenses;
 use Composer\Util\Platform;
 use Symfony\Component\Console\Formatter\OutputFormatterStyle;
-use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
-use Composer\Repository\ArrayRepository;
-use Composer\Repository\CompositeRepository;
-use Composer\Repository\ComposerRepository;
-use Composer\Repository\PlatformRepository;
-use Composer\Repository\RepositoryInterface;
-use Composer\Repository\RepositoryFactory;
-use Composer\Spdx\SpdxLicenses;
-use Composer\Composer;
-use Composer\Semver\Semver;
+use Symfony\Component\Console\Terminal;
 
 /**
  * @author Robert Schönthal <seroscho@googlemail.com>
@@ -255,7 +256,13 @@ EOT
             $packageListFilter = $this->getRootRequires();
         }
 
-        list($width) = $this->getApplication()->getTerminalDimensions();
+        if (class_exists('Symfony\Component\Console\Terminal')) {
+            $terminal = new Terminal();
+            $width = $terminal->getWidth();
+        } else {
+            // For versions of Symfony console before 3.2
+            list($width) = $this->getApplication()->getTerminalDimensions();
+        }
         if (null === $width) {
             // In case the width is not detected, we're probably running the command
             // outside of a real terminal, use space without a limit