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LibCompress: Switch DeflateDecompressor to a fallible constructor

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We don't have anything fallible in there yet, but we will soon switch
the seekback buffer to the new `CircularBuffer`, which has a fallible
constructor.

We have to do the same for the internal `GzipDecompressor::Member`
class, as it needs to construct a `DeflateCompressor` from its received
stream.
This commit is contained in:
Tim Schumacher 2023-01-01 00:38:05 +01:00 • committed by Andrew Kaster
parent d717a08003
commit d23f0a7405
4 changed files with 34 additions and 16 deletions
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11
Userland/Libraries/LibCompress/Deflate.cpp
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@ -189,6 +189,11 @@ ErrorOr<bool> DeflateDecompressor::UncompressedBlock::try_read_more()
return true;
}
ErrorOr<NonnullOwnPtr<DeflateDecompressor>> DeflateDecompressor::construct(Core::Stream::Handle<Core::Stream::Stream> stream)
{
return TRY(adopt_nonnull_own_or_enomem(new (nothrow) DeflateDecompressor(move(stream))));
}
DeflateDecompressor::DeflateDecompressor(Core::Stream::Handle<Core::Stream::Stream> stream)
: m_input_stream(make<Core::Stream::LittleEndianInputBitStream>(move(stream)))
{
@ -311,12 +316,12 @@ void DeflateDecompressor::close()
ErrorOr<ByteBuffer> DeflateDecompressor::decompress_all(ReadonlyBytes bytes)
{
auto memory_stream = TRY(Core::Stream::FixedMemoryStream::construct(bytes));
DeflateDecompressor deflate_stream { move(memory_stream) };
auto deflate_stream = TRY(DeflateDecompressor::construct(move(memory_stream)));
DuplexMemoryStream output_stream;
auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
while (!deflate_stream.is_eof()) {
auto const slice = TRY(deflate_stream.read(buffer));
while (!deflate_stream->is_eof()) {
auto const slice = TRY(deflate_stream->read(buffer));
output_stream.write_or_error(slice);
}