1 files changed, 39 insertions, 0 deletions
diff --git a/driver/src/main/java/com/code_intelligence/jazzer/driver/Utils.java b/driver/src/main/java/com/code_intelligence/jazzer/driver/Utils.java
new file mode 100644
index 00000000..37eb1d0f
--- /dev/null
+++ b/driver/src/main/java/com/code_intelligence/jazzer/driver/Utils.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2022 Code Intelligence GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.code_intelligence.jazzer.driver;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Utils {
+  /**
+   * Convert the arguments to UTF8 before passing them on to JNI as there are no JNI functions to
+   * get (unmodified) UTF-8 out of a jstring.
+   */
+  static byte[][] toNativeArgs(Collection<String> args) {
+    return args.stream().map(str -> str.getBytes(StandardCharsets.UTF_8)).toArray(byte[][] ::new);
+  }
+
+  static List<String> fromNativeArgs(byte[][] args) {
+    return Arrays.stream(args)
+        .map(bytes -> new String(bytes, StandardCharsets.UTF_8))
+        .collect(Collectors.toList());
+  }
+}