Add source code for ctrtool

ctrtool/deps/libtoolchain/src/io/SubSink.cpp

@@ -0,0 +1,73 @@
+#include <tc/io/SubSink.h>
+#include <tc/io/IOUtil.h>
+
+const std::string tc::io::SubSink::kClassName = "tc::io::SubSink";
+
+tc::io::SubSink::SubSink() :
+	mBaseSink(nullptr),
+	mBaseSinkOffset(0),
+	mSubSinkLength(0)
+{
+
+}
+
+tc::io::SubSink::SubSink(const std::shared_ptr<tc::io::ISink>& sink, int64_t offset, int64_t length) :
+	SubSink()
+{
+	mBaseSink = sink;
+
+	// validate arguments
+	if (mBaseSink == nullptr)
+	{
+		throw tc::ArgumentNullException(kClassName, "The base sink is null.");
+	}
+
+	if (offset < 0)
+	{
+		throw tc::ArgumentOutOfRangeException(kClassName, "offset is negative");
+	}
+	if (length < 0)
+	{
+		throw tc::ArgumentOutOfRangeException(kClassName, "length is negative");
+	}
+
+	int64_t base_length = mBaseSink->length();
+
+	// validate arguments against sink length
+	// sub sink length should not be greater than the base sink length
+	if (length > base_length)
+	{
+		throw tc::ArgumentOutOfRangeException(kClassName, "The sub sink length is greater than base sink length.");
+	}
+	// Base length - length is the maximum possible offset for the sub sink
+	if (offset > (base_length - length))
+	{
+		throw tc::ArgumentOutOfRangeException(kClassName, "The sub sink offset is greater than the maximum possible offset given the base sink length and sub sink length.");
+	}
+	
+	// set class state
+	mBaseSinkOffset = offset;
+	mSubSinkLength = length;
+}
+
+int64_t tc::io::SubSink::length()
+{
+	return mBaseSink == nullptr ? 0 : mSubSinkLength;
+}
+
+void tc::io::SubSink::setLength(int64_t length)
+{
+	throw tc::NotImplementedException(kClassName+"::setLength()", "setLength is not implemented for SubSink.");
+}
+
+size_t tc::io::SubSink::pushData(const tc::ByteData& data, int64_t offset)
+{
+	if (mBaseSink == nullptr)
+	{
+		throw tc::ObjectDisposedException(kClassName+"::pushData()", "Failed to push data (no base sink)");
+	}
+
+	auto new_data = tc::ByteData(data.data(), IOUtil::getWritableCount(mSubSinkLength, offset, data.size()));
+
+	return mBaseSink->pushData(new_data, mBaseSinkOffset + offset);
+}