feat: implemented xz coder

composer.json

@@ -14,6 +14,9 @@
     "allow-plugins": false,
     "sort-packages": true
   },
+  "conflict": {
+    "symfony/process": "<6|>=8"
+  },
   "description": "Library for work with binary data and objects",
   "funding": [
     {
@@ -34,7 +37,8 @@
     "hexadecimal",
     "igbinary",
     "serializer",
-    "zlib"
+    "zlib",
+    "xz"
   ],
   "license": "LGPL-3.0-or-later",
   "name": "petrknap/binary",
@@ -50,7 +54,8 @@
     "nunomaduro/phpinsights": "^2.11",
     "phpstan/phpstan": "^1.12",
     "phpunit/phpunit": "^10.5",
-    "squizlabs/php_codesniffer": "^3.7"
+    "squizlabs/php_codesniffer": "^3.7",
+    "symfony/process": "*"
   },
   "scripts": {
     "test": "@test-implementation",
@@ -76,6 +81,7 @@
   "suggest": {
     "ext-igbinary": "Required to serialize data via igbinary",
     "ext-mbstring": "Required to bite bytes",
-    "ext-zlib": "Required to compress data"
+    "ext-zlib": "Required to compress data",
+    "symfony/process": "Required to call external executables"
   }
 }

src/Coder/ExternalCoder.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PetrKnap\Binary\Coder;
+
+use PetrKnap\Shorts\HasRequirements;
+use Symfony\Component\Process\Exception\ProcessFailedException;
+use Symfony\Component\Process\Process;
+
+/**
+ * @internal
+ */
+abstract class ExternalCoder extends Coder
+{
+    use HasRequirements;
+
+    /**
+     * Must be set in {@see self::encode()}
+     *
+     * @var array<string>
+     */
+    protected array $encodeCommand;
+
+    /**
+     * Must be set in {@see self::encode()}
+     *
+     * @var array<string>
+     */
+    protected array $decodeCommand;
+
+    public function __construct()
+    {
+        self::checkRequirements(
+            classes: [
+                Process::class,
+                ProcessFailedException::class,
+            ],
+        );
+    }
+
+    protected function doEncode(string $decoded): string
+    {
+        $encoder = new Process($this->encodeCommand);
+        $encoder->setInput($decoded);
+        $encoder->run();
+        if (!$encoder->isSuccessful()) {
+            throw new ProcessFailedException($encoder);
+        }
+        return $encoder->getOutput();
+    }
+
+    protected function doDecode(string $encoded): string
+    {
+        $decoder = new Process($this->decodeCommand);
+        $decoder->setInput($encoded);
+        $decoder->run();
+        if (!$decoder->isSuccessful()) {
+            throw new ProcessFailedException($decoder);
+        }
+        return $decoder->getOutput();
+    }
+}

src/Coder/Xz.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PetrKnap\Binary\Coder;
+
+final class Xz extends ExternalCoder
+{
+    public function encode(string $decoded, int|null $level = null): string
+    {
+        $this->encodeCommand = ['xz', '--compress', '--stdout'];
+        if ($level !== null) {
+            $this->encodeCommand[] = "-{$level}";
+        }
+        return parent::encode($decoded);
+    }
+    public function decode(string $encoded): string
+    {
+        $this->decodeCommand = ['xz', '--decompress', '--stdout'];
+        return parent::decode($encoded);
+    }
+}

tests/Coder/XzTest.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PetrKnap\Binary\Coder;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+
+final class XzTest extends CoderTestCase
+{
+    public static function data(): array
+    {
+        $data = self::getDecodedData();
+        return [
+            'default preset' => [$data, base64_decode('/Td6WFoAAATm1rRGAgAhARYAAAB0L+Wj4AA7ABxdAG0OUG7jCUfPj0z08gJbP9KgthIHS/jgLMk44AAAwVvY3vTzsZsAATg8V3V2GB+2830BAAAAAARZWg=='), null],
+            'preset 0' => [$data, base64_decode('/Td6WFoAAATm1rRGAgAhAQwAAACPmEGc4AA7ABxdAG0OUG7jCUfPj0z08gJbP9KgthIHS/jgLMk44AAAwVvY3vTzsZsAATg8V3V2GB+2830BAAAAAARZWg=='), 0],
+            'preset 9' => [$data, base64_decode('/Td6WFoAAATm1rRGAgAhARwAAAAQz1jM4AA7ABxdAG0OUG7jCUfPj0z08gJbP9KgthIHS/jgLMk44AAAwVvY3vTzsZsAATg8V3V2GB+2830BAAAAAARZWg=='), 9],
+        ];
+    }
+
+    #[DataProvider('data')]
+    public function testEncodes(string $decoded, string $encoded, int|null $level): void
+    {
+        self::assertBinarySame(
+            $encoded,
+            (new Xz())->encode(
+                $decoded,
+                level: $level,
+            ),
+        );
+    }
+
+    #[DataProvider('data')]
+    public function testDecodes(string $decoded, string $encoded): void
+    {
+        self::assertBinarySame(
+            $decoded,
+            (new Xz())->decode(
+                $encoded,
+            ),
+        );
+    }
+}