From 07f706e57de283d152bfba1af0dc25b660cffc5d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Z=C3=BClke?= <dzuelke@gmail.com>
Date: Fri, 21 Jul 2023 11:28:36 +0200
Subject: [PATCH] Fix 'composer show --platform <package>' erroring if no
 composer.json is present (#11533)

Sort of related to #11046 (although this is not a regression, but didn't work before, either)
---
 src/Composer/Command/ShowCommand.php            | 4 ++--
 tests/Composer/Test/Command/ShowCommandTest.php | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index 603a26e9c..50fd058aa 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -815,7 +815,7 @@ EOT
         $io->write('<info>homepage</info> : ' . $package->getHomepage());
         $io->write('<info>source</info>   : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getSourceType(), $package->getSourceUrl(), $package->getSourceReference()));
         $io->write('<info>dist</info>     : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getDistType(), $package->getDistUrl(), $package->getDistReference()));
-        if ($installedRepo->hasPackage($package)) {
+        if (!PlatformRepository::isPlatformPackage($package->getName()) && $installedRepo->hasPackage($package)) {
             $path = $this->requireComposer()->getInstallationManager()->getInstallPath($package);
             if (is_string($path)) {
                 $io->write('<info>path</info>     : ' . realpath($path));
@@ -976,7 +976,7 @@ EOT
             ];
         }
 
-        if ($installedRepo->hasPackage($package)) {
+        if (!PlatformRepository::isPlatformPackage($package->getName()) && $installedRepo->hasPackage($package)) {
             $path = $this->requireComposer()->getInstallationManager()->getInstallPath($package);
             if (is_string($path)) {
                 $path = realpath($path);
diff --git a/tests/Composer/Test/Command/ShowCommandTest.php b/tests/Composer/Test/Command/ShowCommandTest.php
index 0e1bf0ada..4dbf25872 100644
--- a/tests/Composer/Test/Command/ShowCommandTest.php
+++ b/tests/Composer/Test/Command/ShowCommandTest.php
@@ -288,12 +288,19 @@ vendor/package 1.1.0 <highlight>! 1.2.0</highlight>", trim($appTester->getDispla
         unlink('./composer.json');
         unlink('./auth.json');
 
+        // listing packages
         $appTester = $this->getApplicationTester();
         $appTester->run(['command' => 'show', '-p' => true]);
         $output = trim($appTester->getDisplay(true));
         foreach (Regex::matchAll('{^(\w+)}m', $output)->matches as $m) {
             self::assertTrue(PlatformRepository::isPlatformPackage((string) $m[1]));
         }
+
+        // getting a single package
+        $appTester->run(['command' => 'show', '-p' => true, 'package' => 'php']);
+        $appTester->assertCommandIsSuccessful();
+        $appTester->run(['command' => 'show', '-p' => true, '-f' => 'json', 'package' => 'php']);
+        $appTester->assertCommandIsSuccessful();
     }
 
     public function testOutdatedWithZeroMajor(): void