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vendor/sebastian/global-state/src/CodeExporter.php

@@ -0,0 +1,91 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/global-state.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\GlobalState;
+
+/**
+ * Exports parts of a Snapshot as PHP code.
+ */
+final class CodeExporter
+{
+    public function constants(Snapshot $snapshot): string
+    {
+        $result = '';
+
+        foreach ($snapshot->constants() as $name => $value) {
+            $result .= \sprintf(
+                'if (!defined(\'%s\')) define(\'%s\', %s);' . "\n",
+                $name,
+                $name,
+                $this->exportVariable($value)
+            );
+        }
+
+        return $result;
+    }
+
+    public function globalVariables(Snapshot $snapshot): string
+    {
+        $result = '$GLOBALS = [];' . \PHP_EOL;
+
+        foreach ($snapshot->globalVariables() as $name => $value) {
+            $result .= \sprintf(
+                '$GLOBALS[%s] = %s;' . \PHP_EOL,
+                $this->exportVariable($name),
+                $this->exportVariable($value)
+            );
+        }
+
+        return $result;
+    }
+
+    public function iniSettings(Snapshot $snapshot): string
+    {
+        $result = '';
+
+        foreach ($snapshot->iniSettings() as $key => $value) {
+            $result .= \sprintf(
+                '@ini_set(%s, %s);' . "\n",
+                $this->exportVariable($key),
+                $this->exportVariable($value)
+            );
+        }
+
+        return $result;
+    }
+
+    private function exportVariable($variable): string
+    {
+        if (\is_scalar($variable) || null === $variable ||
+            (\is_array($variable) && $this->arrayOnlyContainsScalars($variable))) {
+            return \var_export($variable, true);
+        }
+
+        return 'unserialize(' . \var_export(\serialize($variable), true) . ')';
+    }
+
+    private function arrayOnlyContainsScalars(array $array): bool
+    {
+        $result = true;
+
+        foreach ($array as $element) {
+            if (\is_array($element)) {
+                $result = $this->arrayOnlyContainsScalars($element);
+            } elseif (!\is_scalar($element) && null !== $element) {
+                $result = false;
+            }
+
+            if ($result === false) {
+                break;
+            }
+        }
+
+        return $result;
+    }
+}