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Fixing BlockStream::BlockQueuePeekBytes #41

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Fixing BlockStream::BlockQueuePeekBytes #41

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20 changes: 14 additions & 6 deletions libdash/libdash/source/helpers/BlockStream.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -157,15 +157,23 @@ bool BlockStream::BlockQueuePeekBytes (uint8_t *data, uint32_t len
while(pos < len)
{
block = this->blockqueue.at(cnt);
if((offset + len - pos) < (block->len))
if (offset >= block->len)
{
memcpy(data + pos, block->data + offset, len - pos - offset);
return true;
offset-= block->len;
}
else
{
memcpy(data + pos, block->data + offset, block->len - offset);
pos += block->len;
if((offset + len - pos) < (block->len))
{
memcpy(data + pos, block->data + offset, len - pos - offset);
return true;
}
else
{
memcpy(data + pos, block->data + offset, block->len - offset);
pos += (block->len - offset);
offset = 0;
}
}

cnt++;
Expand Down Expand Up @@ -287,4 +295,4 @@ BlockStream* BlockStream::GetBlocks (uint64_t len)
}

return blocks;
}
}