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base/vendor/codeigniter4/framework/system/CLI/InputOutput.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\CLI;
+
+/**
+ * Input and Output for CLI.
+ */
+class InputOutput
+{
+    /**
+     * Is the readline library on the system?
+     */
+    private readonly bool $readlineSupport;
+
+    public function __construct()
+    {
+        // Readline is an extension for PHP that makes interactivity with PHP
+        // much more bash-like.
+        // http://www.php.net/manual/en/readline.installation.php
+        $this->readlineSupport = extension_loaded('readline');
+    }
+
+    /**
+     * Get input from the shell, using readline or the standard STDIN
+     *
+     * Named options must be in the following formats:
+     * php index.php user -v --v -name=John --name=John
+     *
+     * @param string|null $prefix You may specify a string with which to prompt the user.
+     */
+    public function input(?string $prefix = null): string
+    {
+        // readline() can't be tested.
+        if ($this->readlineSupport && ENVIRONMENT !== 'testing') {
+            return readline($prefix); // @codeCoverageIgnore
+        }
+
+        echo $prefix;
+
+        $input = fgets(fopen('php://stdin', 'rb'));
+
+        if ($input === false) {
+            $input = '';
+        }
+
+        return $input;
+    }
+
+    /**
+     * While the library is intended for use on CLI commands,
+     * commands can be called from controllers and elsewhere
+     * so we need a way to allow them to still work.
+     *
+     * For now, just echo the content, but look into a better
+     * solution down the road.
+     *
+     * @param resource $handle
+     */
+    public function fwrite($handle, string $string): void
+    {
+        if (! is_cli()) {
+            echo $string;
+
+            return;
+        }
+
+        fwrite($handle, $string);
+    }
+}