add some io interface classs

Author: inhere

src/Contract/IOInterface.php

@@ -0,0 +1,13 @@
+<?php declare(strict_types=1);
+
+
+namespace Toolkit\Extlib\Contract;
+
+/**
+ * Interface IOInterface
+ * @package Toolkit\Extlib\Contract
+ */
+interface IOInterface extends InputInterface, OutputInterface
+{
+
+}

src/Contract/InputInterface.php

@@ -0,0 +1,32 @@
+<?php declare(strict_types=1);
+
+namespace Toolkit\Extlib\Contract;
+
+/**
+ * Interface InputInterface
+ * @package Toolkit\Extlib\Contract
+ */
+interface InputInterface
+{
+    /**
+     * @param int $length
+     *
+     * @return string
+     */
+    public function read(int $length): string;
+
+    /**
+     * @return string
+     */
+    public function readln(): string;
+
+    /**
+     * @return string
+     */
+    public function readAll(): string;
+
+    /**
+     * Whether the stream is an interactive terminal
+     */
+    public function isInteractive() : bool;
+}

src/Contract/OutputInterface.php

@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+
+
+namespace Toolkit\Extlib\Contract;
+
+/**
+ * Class OutputInterface
+ *
+ * @package Toolkit\Extlib\Contract
+ */
+interface OutputInterface
+{
+    /**
+     * Write a message to output
+     *
+     * @param string $content
+     *
+     * @return int
+     */
+    public function write(string $content): int;
+
+    /**
+     * Write a message to output with newline
+     *
+     * @param string $content
+     *
+     * @return int
+     */
+    public function writeln(string $content): int;
+
+    /**
+     * Whether the stream is an interactive terminal
+     */
+    public function isInteractive() : bool;
+}

src/IO/StreamIO.php

@@ -10,4 +10,4 @@
 class StreamIO
 {
 
-}
+}