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LibCore: Use Error::from_errno in Stream APIs

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This makes Stream APIs work with Lagom and is overall cleaner.
This commit is contained in:
sin-ack 2021-12-29 23:13:11 +00:00 • committed by Ali Mohammad Pur
parent dbd25916a3
commit 5f645e84d8
2 changed files with 14 additions and 14 deletions
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18
Userland/Libraries/LibCore/Stream.h
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@ -340,7 +340,7 @@ public:
// datagram to be discarded. That's not very nice, so let's bail
// early, telling the caller that he should allocate a bigger
// buffer.
return EMSGSIZE;
return Error::from_errno(EMSGSIZE);
}
return m_helper.read(buffer);
@ -469,13 +469,13 @@ public:
static ErrorOr<NonnullOwnPtr<BufferedType<T>>> create_buffered(NonnullOwnPtr<T> stream, size_t buffer_size)
{
if (!buffer_size)
return EINVAL;
return Error::from_errno(EINVAL);
if (!stream->is_open())
return ENOTCONN;
return Error::from_errno(ENOTCONN);
auto maybe_buffer = ByteBuffer::create_uninitialized(buffer_size);
if (!maybe_buffer.has_value())
return ENOMEM;
return Error::from_errno(ENOMEM);
return adopt_nonnull_own_or_enomem(new BufferedType<T>(move(stream), maybe_buffer.release_value()));
}
@ -486,9 +486,9 @@ public:
ErrorOr<size_t> read(Bytes buffer)
{
if (!stream().is_open())
return ENOTCONN;
return Error::from_errno(ENOTCONN);
if (!buffer.size())
return ENOBUFS;
return Error::from_errno(ENOBUFS);
// Let's try to take all we can from the buffer first.
size_t buffer_nread = 0;
@ -536,10 +536,10 @@ public:
ErrorOr<size_t> read_until_any_of(Bytes buffer, Array<StringView, N> candidates)
{
if (!stream().is_open())
return ENOTCONN;
return Error::from_errno(ENOTCONN);
if (buffer.is_empty())
return ENOBUFS;
return Error::from_errno(ENOBUFS);
// We fill the buffer through can_read_line.
if (!TRY(can_read_line()))
@ -557,7 +557,7 @@ public:
// violating the invariant twice the next time the user attempts
// to read, which is No Good. So let's give a descriptive error
// to the caller about why it can't read.
return EMSGSIZE;
return Error::from_errno(EMSGSIZE);
}
m_buffer.span().slice(0, m_buffered_size).copy_to(buffer);