Function MVOL_write_block

src/burp/mvol.cpp:1347–1380

____________________________________________________________ Write a chunk of data to the IO buffer. Return a pointer to the first position NOT written from.

// Return a pointer to the first position NOT written from.
//
const UCHAR* MVOL_write_block(BurpGlobals* tdgbl, const UCHAR* ptr, ULONG count)
{
	while (count)
	{
		// If buffer full, write it
		if (tdgbl->gbl_io_cnt <= 0)
		{
			if (!tdgbl->master)
			{
				BackupRelationTask::renewBuffer(tdgbl);
			}
			else
			{
				zip_write_block(tdgbl, tdgbl->gbl_compress_buffer, tdgbl->gbl_io_ptr - tdgbl->gbl_compress_buffer, false);

				tdgbl->gbl_io_ptr = tdgbl->gbl_compress_buffer;
				tdgbl->gbl_io_cnt = ZC_BUFSIZE;
			}
		}

		const ULONG n = MIN(count, (ULONG) tdgbl->gbl_io_cnt);

		// Copy data to the IO buffer
		memcpy(tdgbl->gbl_io_ptr, ptr, n);
		ptr += n;
		count -= n;

		// Skip ahead in current buffer
		tdgbl->gbl_io_cnt -= n;
		tdgbl->gbl_io_ptr += n;
	}

	return ptr;
}

const UCHAR* mvol_write_block(BurpGlobals* tdgbl, const UCHAR* ptr, ULONG count)
{