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map_file fix

This commit is contained in:
Arvid Norberg 2009-01-14 06:55:28 +00:00
parent b9d7538ba8
commit 63add6c725
1 changed files with 7 additions and 4 deletions
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11
src/file_storage.cpp
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@ -97,7 +97,7 @@ namespace libtorrent
{
bool compare_file_offset(file_entry const& lhs, file_entry const& rhs)
{
return lhs.offset + lhs.size < rhs.offset + rhs.size;
return lhs.offset < rhs.offset;
}
}
@ -107,18 +107,21 @@ namespace libtorrent
TORRENT_ASSERT(num_files() > 0);
std::vector<file_slice> ret;
if (m_files.empty()) return ret;
// find the file iterator and file offset
file_entry target;
target.offset = piece * (size_type)m_piece_length + offset;
target.size = 0;
TORRENT_ASSERT(target.offset + size <= m_total_size);
TORRENT_ASSERT(!compare_file_offset(target, m_files.front()));
std::vector<file_entry>::const_iterator file_iter = std::upper_bound(
begin(), end(), target, compare_file_offset);
if (file_iter == end()) return ret;
TORRENT_ASSERT(file_iter != begin());
--file_iter;
size_type file_offset = file_iter->offset;
size_type file_offset = offset - file_iter->offset;
for (; size > 0; file_offset -= file_iter->size, ++file_iter)
{
TORRENT_ASSERT(file_iter != end());