initial commit

vendor/symfony/flex/src/Lock.php

@@ -0,0 +1,89 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Flex;
+
+use Composer\Json\JsonFile;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Lock
+{
+    private $json;
+    private $lock = [];
+    private $changed = false;
+
+    public function __construct($lockFile)
+    {
+        $this->json = new JsonFile($lockFile);
+        if ($this->json->exists()) {
+            $this->lock = $this->json->read();
+        }
+    }
+
+    public function has($name): bool
+    {
+        return \array_key_exists($name, $this->lock);
+    }
+
+    public function add($name, $data)
+    {
+        $current = $this->lock[$name] ?? [];
+        $this->lock[$name] = array_merge($current, $data);
+        $this->changed = true;
+    }
+
+    public function get($name)
+    {
+        return $this->lock[$name] ?? null;
+    }
+
+    public function set($name, $data)
+    {
+        if (!\array_key_exists($name, $this->lock) || $data !== $this->lock[$name]) {
+            $this->lock[$name] = $data;
+            $this->changed = true;
+        }
+    }
+
+    public function remove($name)
+    {
+        if (\array_key_exists($name, $this->lock)) {
+            unset($this->lock[$name]);
+            $this->changed = true;
+        }
+    }
+
+    public function write()
+    {
+        if (!$this->changed) {
+            return;
+        }
+
+        if ($this->lock) {
+            ksort($this->lock);
+            $this->json->write($this->lock);
+        } elseif ($this->json->exists()) {
+            @unlink($this->json->getPath());
+        }
+    }
+
+    public function delete()
+    {
+        @unlink($this->json->getPath());
+    }
+
+    public function all(): array
+    {
+        return $this->lock;
+    }
+}