Add source code for ctrtool

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

@@ -0,0 +1,49 @@
+#include <tc/io/MemorySource.h>
+#include <tc/io/IOUtil.h>
+
+const std::string tc::io::MemorySource::kClassName = "tc::io::MemorySource";
+
+tc::io::MemorySource::MemorySource() :
+	mData()
+{
+
+}
+
+tc::io::MemorySource::MemorySource(const tc::ByteData& byte_data) :
+	mData(byte_data)
+{
+
+}
+
+tc::io::MemorySource::MemorySource(tc::ByteData&& byte_data) :
+	mData(std::move(byte_data))
+{
+
+}
+
+
+tc::io::MemorySource::MemorySource(const byte_t* data, size_t len) :
+	mData(data, len)
+{
+}
+
+int64_t tc::io::MemorySource::length()
+{
+	return int64_t(mData.size());
+}
+
+tc::ByteData tc::io::MemorySource::pullData(int64_t offset, size_t count)
+{
+	size_t read_len = IOUtil::getReadableCount(this->length(), offset, count);
+
+	// if the read length is zero then return now.
+	if (read_len == 0)
+		return tc::ByteData();
+
+
+	tc::ByteData out(read_len);
+
+	memcpy(out.data(), mData.data() + offset, read_len);
+
+	return out;
+}