Replace STDIN by php://stdin

Author: nicolas-grekas

Command/LintCommand.php

@@ -88,15 +88,15 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $flags = $input->getOption('parse-tags') ? Yaml::PARSE_CUSTOM_TAGS : 0;
 
         if (['-'] === $filenames) {
-            return $this->display($io, [$this->validate($this->getStdin(), $flags)]);
+            return $this->display($io, [$this->validate(file_get_contents('php://stdin'), $flags)]);
         }
 
         // @deprecated to be removed in 5.0
         if (!$filenames) {
             if (0 === ftell(STDIN)) {
                 @trigger_error('Piping content from STDIN to the "lint:yaml" command without passing the dash symbol "-" as argument is deprecated since Symfony 4.4.', E_USER_DEPRECATED);
 
-                return $this->display($io, [$this->validate($this->getStdin(), $flags)]);
+                return $this->display($io, [$this->validate(file_get_contents('php://stdin'), $flags)]);
             }
 
             throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
@@ -215,16 +215,6 @@ private function getFiles(string $fileOrDirectory): iterable
         }
     }
 
-    private function getStdin(): string
-    {
-        $yaml = '';
-        while (!feof(STDIN)) {
-            $yaml .= fread(STDIN, 1024);
-        }
-
-        return $yaml;
-    }
-
     private function getParser(): Parser
     {
         if (!$this->parser) {