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LibArchive: Port TarFileStream to Core::Stream

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This commit is contained in:
Tim Schumacher 2022-11-28 15:57:44 +01:00 • committed by Andreas Kling
parent 6e29619dcb
commit 71d1d9e2b5
3 changed files with 26 additions and 53 deletions
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49
Userland/Libraries/LibArchive/TarStream.cpp
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@ -17,29 +17,24 @@ TarFileStream::TarFileStream(TarInputStream& tar_stream)
{
}
size_t TarFileStream::read(Bytes bytes)
ErrorOr<Bytes> TarFileStream::read(Bytes bytes)
{
// verify that the stream has not advanced
// Verify that the stream has not advanced.
VERIFY(m_tar_stream.m_generation == m_generation);
if (has_any_error())
return 0;
auto header_size_or_error = m_tar_stream.header().size();
if (header_size_or_error.is_error())
return 0;
auto header_size = header_size_or_error.release_value();
auto header_size = TRY(m_tar_stream.header().size());
auto to_read = min(bytes.size(), header_size - m_tar_stream.m_file_offset);
auto nread = m_tar_stream.m_stream.read(bytes.trim(to_read));
m_tar_stream.m_file_offset += nread;
return nread;
return bytes.slice(0, nread);
}
bool TarFileStream::unreliable_eof() const
bool TarFileStream::is_eof() const
{
// verify that the stream has not advanced
// Verify that the stream has not advanced.
VERIFY(m_tar_stream.m_generation == m_generation);
auto header_size_or_error = m_tar_stream.header().size();
@ -51,34 +46,10 @@ bool TarFileStream::unreliable_eof() const
|| m_tar_stream.m_file_offset >= header_size;
}
bool TarFileStream::read_or_error(Bytes bytes)
ErrorOr<size_t> TarFileStream::write(ReadonlyBytes)
{
// verify that the stream has not advanced
VERIFY(m_tar_stream.m_generation == m_generation);
if (read(bytes) < bytes.size()) {
set_fatal_error();
return false;
}
return true;
}
bool TarFileStream::discard_or_error(size_t count)
{
// verify that the stream has not advanced
VERIFY(m_tar_stream.m_generation == m_generation);
auto header_size_or_error = m_tar_stream.header().size();
if (header_size_or_error.is_error())
return false;
auto header_size = header_size_or_error.release_value();
if (count > header_size - m_tar_stream.m_file_offset) {
return false;
}
m_tar_stream.m_file_offset += count;
return m_tar_stream.m_stream.discard_or_error(count);
// This is purely for wrapping and representing file contents in an archive.
VERIFY_NOT_REACHED();
}
TarInputStream::TarInputStream(InputStream& stream)