Add unpacktool

unpacktool/NullDecompressor.cpp

@@ -0,0 +1,29 @@
+#include "NullDecompressor.h"
+#include "CSInputBuffer.h"
+
+NullDecompressor::NullDecompressor()
+	: m_input(nullptr)
+{
+}
+
+bool NullDecompressor::Reset(CSInputBuffer *input, size_t compressedSize, size_t decompressedSize)
+{
+	m_input = input;
+	return true;
+}
+
+bool NullDecompressor::ReadBytes(void *dest, size_t numBytes)
+{
+	uint8_t *output = static_cast<uint8_t *>(dest);
+
+	for (size_t i = 0; i < numBytes; i++)
+	{
+		int byte;
+		if (!CSInputNextByte(m_input, byte))
+			return false;
+
+		output[i] = byte;
+	}
+
+	return true;
+}