Initial commit

examples/upgrading.php

@@ -0,0 +1,55 @@
+<?php
+
+/**
+ * This example demonstrates upgrading a ProtocolStream to use a different protocol
+ * than initially configured with.
+ * 
+ * Run the example and try entering some things such as:
+ *   hello world
+ *   foo "bar baz"
+ * and finally:
+ *   upgrade
+ * After the upgrade command, it will only respond to JSON data:
+ *   {"foo":"bar"}
+ * 
+ */
+
+use NoccyLabs\React\Protocol\Json\JsonProtocol;
+use NoccyLabs\React\Protocol\Line\LineProtocol;
+use NoccyLabs\React\Protocol\ProtocolStream;
+use React\Stream\CompositeStream;
+use React\Stream\ReadableResourceStream;
+use React\Stream\WritableResourceStream;
+
+require_once __DIR__."/../vendor/autoload.php";
+
+$stdin = new ReadableResourceStream(STDIN);
+$stdout = new WritableResourceStream(STDOUT);
+$stdio = new CompositeStream($stdin, $stdout);
+
+$textProto = new LineProtocol(
+    beforePackCb: function (array $msg): array {
+        $out = [];
+        $cmd = array_shift($msg);
+        $out = [ $cmd, ...array_map("json_encode", $msg) ];
+        return $out;
+    }
+);
+$jsonProto = new JsonProtocol(
+    frameSeparator: "\n"
+);
+
+$stream = new ProtocolStream($stdio, $textProto);
+$stream->on("message", function (array $msg) use ($stream, $jsonProto) {
+    if (array_is_list($msg)) {
+        if (reset($msg) == 'upgrade') {
+            $stream->send([ 'OK', 'Upgrading to JSON protocol']);
+            $stream->upgrade($jsonProto);
+            $stream->send([ 'info' => 'Now using JSON proto' ]);
+        } else {
+            $stream->send([ 'echo', json_encode($msg)]);
+        }
+    } else {
+        $stream->send([ 'echo' => $msg ]);
+    }
+});