Method GetTempPtr

IDEHelper/COFF.cpp:173–214

//////////////////////////////////////////////////////////////////////////

uint8* CvStreamReader::GetTempPtr(int offset, int size, bool mayRecurse, bool* madeCopy)
{
	int pageStart = offset >> mPageBits;
	int pageEnd = (offset + size - 1) >> mPageBits;

	if (pageStart >= pageEnd)
		return mStreamPtrs.mVals[pageStart] + (offset & ((1<<mPageBits) - 1));

	// Handle the relatively-rare case of spanning multiple pages
	if (madeCopy != NULL)
		*madeCopy = true;

	uint8* destPtr;
	if (mayRecurse)
	{
		if (mCOFF->mTempBufIdx >= mCOFF->mTempBufs.size())
			mCOFF->mTempBufs.push_back(Array<uint8>());
		auto& arr = mCOFF->mTempBufs[mCOFF->mTempBufIdx++];
		if (arr.size() < size)
			arr.Resize(size);
		destPtr = arr.mVals;
	}
	else
	{
		if (mTempData.size() < size)
			mTempData.Resize(size);
		destPtr = mTempData.mVals;
	}

	uint8* dest = destPtr;
	while (size > 0)
	{
		int copyPage = offset >> mPageBits;
		int pageOffset = offset & ((1 << mPageBits) - 1);
		int copyBytes = BF_MIN(mCOFF->mCvPageSize - pageOffset, size);
		memcpy(destPtr, mStreamPtrs.mVals[copyPage] + pageOffset, copyBytes);
		destPtr += copyBytes;
		offset += copyBytes;
		size -= copyBytes;
	}
	return dest;
}

uint8* CvStreamReader::GetPermanentPtr(int offset, int size, bool* madeCopy)
{