Initial commit

src/Line/LineProtocol.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace NoccyLabs\React\Protocol\Line;
+
+use Closure;
+use NoccyLabs\React\Protocol\ProtocolInterface;
+
+class LineProtocol implements ProtocolInterface
+{
+    public function __construct(
+        private readonly string $lineBreak = "\n",
+        private readonly bool $quoteStrings = false,
+        private readonly bool $escapeSpecial = false,
+        private readonly ?Closure $beforePackCb = null,
+        private readonly ?Closure $afterPackCb = null,
+        private readonly ?Closure $beforeUnpackCb = null,
+        private readonly ?Closure $afterUnpackCb = null,
+    )
+    {
+        
+    }
+
+    public function packFrame(array $frame): string
+    {
+        if (is_callable($this->beforePackCb))
+            $frame = call_user_func($this->beforePackCb, $frame);
+
+        if ($this->escapeSpecial) {
+            $frame = array_map(quotemeta(...), $frame);
+        }
+
+        if ($this->quoteStrings) {
+            $frame = array_map(fn($v) => is_string($v) ? ('"'.str_replace('"',"\\\"",$v).'"') : $v, $frame);
+        }
+        
+        $data = join(" ", $frame);
+        $data .= $this->lineBreak;
+
+        if (is_callable($this->afterPackCb))
+            $data = call_user_func($this->afterPackCb, $data);
+
+        return $data;
+    }
+
+    public function unpackFrame(string $data): array
+    {
+        return str_getcsv($data, ' ', '"', "\\");
+    }
+
+    public function consumeFrame(string &$data): ?array
+    {
+        // check for $this->lineBreak
+        $p = strpos($data, $this->lineBreak);
+        if ($p === false) {
+            return null;
+        }
+
+        // break on separator
+        $frame = substr($data, 0, $p);
+        $data = substr($data, $p + strlen($this->lineBreak));
+
+        return $this->unpackFrame($frame);
+    }
+}