nstool/programs/nstool/source/OffsetAdjustedIFile.cpp

#include "OffsetAdjustedIFile.h"

OffsetAdjustedIFile::OffsetAdjustedIFile(fnd::IFile& file, size_t offset, size_t size) :
	mFile(file),
	mBaseOffset(offset),
	mCurrentOffset(0),
	mSize(size)
{

}

size_t OffsetAdjustedIFile::size()
{
	return mSize;
}

void OffsetAdjustedIFile::seek(size_t offset)
{
	mCurrentOffset = offset;
	mFile.seek(offset + mBaseOffset);
}

void OffsetAdjustedIFile::read(byte_t* out, size_t len)
{
	seek(mCurrentOffset);
	mFile.read(out, len);
}

void OffsetAdjustedIFile::read(byte_t* out, size_t offset, size_t len)
{
	seek(offset);
	read(out, len);
}

void OffsetAdjustedIFile::write(const byte_t* out, size_t len)
{
	seek(mCurrentOffset);
	mFile.write(out, len);
}

void OffsetAdjustedIFile::write(const byte_t* out, size_t offset, size_t len)
{
	seek(offset);
	write(out, len);
}