1 files changed, 25 insertions, 0 deletions
diff --git a/agent/src/main/java/com/code_intelligence/jazzer/utils/Utils.kt b/agent/src/main/java/com/code_intelligence/jazzer/utils/Utils.kt
index af8cce9b..1b399baf 100644
--- a/agent/src/main/java/com/code_intelligence/jazzer/utils/Utils.kt
+++ b/agent/src/main/java/com/code_intelligence/jazzer/utils/Utils.kt
@@ -17,6 +17,8 @@ package com.code_intelligence.jazzer.utils
 
 import java.lang.reflect.Executable
 import java.lang.reflect.Method
+import java.nio.ByteBuffer
+import java.nio.channels.FileChannel
 
 val Class<*>.descriptor: String
     get() = when {
@@ -80,3 +82,26 @@ fun simpleFastHash(vararg strings: String): Int {
     }
     return hash
 }
+
+/**
+ * Reads the [FileChannel] to the end as a UTF-8 string.
+ */
+fun FileChannel.readFully(): String {
+    check(size() <= Int.MAX_VALUE)
+    val buffer = ByteBuffer.allocate(size().toInt())
+    while (buffer.hasRemaining()) {
+        when (read(buffer)) {
+            0 -> throw IllegalStateException("No bytes read")
+            -1 -> break
+        }
+    }
+    return String(buffer.array())
+}
+
+/**
+ * Appends [string] to the end of the [FileChannel].
+ */
+fun FileChannel.append(string: String) {
+    position(size())
+    write(ByteBuffer.wrap(string.toByteArray()))
+}