mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
AK: Remove Buffered
This commit is contained in:
Tim Schumacher
Andrew Kaster
parent
ae64b68717
commit
5fa590de71
Notes:
sideshowbarker
2024-07-17 04:49:48 +09:00
Author: https://github.com/timschumi Commit: https://github.com/SerenityOS/serenity/commit/5fa590de71 Pull-request: https://github.com/SerenityOS/serenity/pull/17173 Reviewed-by: https://github.com/ADKaster ✅ Reviewed-by: https://github.com/alimpfard
1 changed files with 0 additions and 199 deletions
199
AK/Buffered.h
199
AK/Buffered.h
|
|
@ -1,199 +0,0 @@
|
|||
/*
|
||||
* Copyright (c) 2020, the SerenityOS developers.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/Noncopyable.h>
|
||||
#include <AK/Span.h>
|
||||
#include <AK/StdLibExtras.h>
|
||||
#include <AK/Stream.h>
|
||||
#include <AK/Types.h>
|
||||
#include <AK/kmalloc.h>
|
||||
|
||||
namespace AK {
|
||||
|
||||
// FIXME: Implement Buffered<T> for DuplexStream.
|
||||
|
||||
template<typename StreamType, size_t Size = 4096>
|
||||
class Buffered;
|
||||
|
||||
template<typename StreamType, size_t Size>
|
||||
requires(IsBaseOf<InputStream, StreamType>) class Buffered<StreamType, Size> final : public InputStream {
|
||||
AK_MAKE_NONCOPYABLE(Buffered);
|
||||
|
||||
public:
|
||||
template<typename... Parameters>
|
||||
explicit Buffered(Parameters&&... parameters)
|
||||
: m_stream(forward<Parameters>(parameters)...)
|
||||
{
|
||||
}
|
||||
|
||||
Buffered(Buffered&& other)
|
||||
: m_stream(move(other.m_stream))
|
||||
{
|
||||
other.buffer().copy_to(buffer());
|
||||
m_buffered = exchange(other.m_buffered, 0);
|
||||
}
|
||||
|
||||
bool has_recoverable_error() const override { return m_stream.has_recoverable_error(); }
|
||||
bool has_fatal_error() const override { return m_stream.has_fatal_error(); }
|
||||
bool has_any_error() const override { return m_stream.has_any_error(); }
|
||||
|
||||
bool handle_recoverable_error() override { return m_stream.handle_recoverable_error(); }
|
||||
bool handle_fatal_error() override { return m_stream.handle_fatal_error(); }
|
||||
bool handle_any_error() override { return m_stream.handle_any_error(); }
|
||||
|
||||
void set_recoverable_error() const override { return m_stream.set_recoverable_error(); }
|
||||
void set_fatal_error() const override { return m_stream.set_fatal_error(); }
|
||||
|
||||
size_t read(Bytes bytes) override
|
||||
{
|
||||
if (has_any_error())
|
||||
return 0;
|
||||
|
||||
auto nread = buffer().trim(m_buffered).copy_trimmed_to(bytes);
|
||||
|
||||
m_buffered -= nread;
|
||||
if (m_buffered > 0)
|
||||
buffer().slice(nread, m_buffered).copy_to(buffer());
|
||||
|
||||
if (nread < bytes.size()) {
|
||||
nread += m_stream.read(bytes.slice(nread));
|
||||
|
||||
m_buffered = m_stream.read(buffer());
|
||||
}
|
||||
|
||||
return nread;
|
||||
}
|
||||
|
||||
bool read_or_error(Bytes bytes) override
|
||||
{
|
||||
if (read(bytes) < bytes.size()) {
|
||||
set_fatal_error();
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool unreliable_eof() const override { return m_buffered == 0 && m_stream.unreliable_eof(); }
|
||||
|
||||
bool eof() const
|
||||
{
|
||||
if (m_buffered > 0)
|
||||
return false;
|
||||
|
||||
m_buffered = m_stream.read(buffer());
|
||||
|
||||
return m_buffered == 0;
|
||||
}
|
||||
|
||||
bool discard_or_error(size_t count) override
|
||||
{
|
||||
size_t ndiscarded = 0;
|
||||
while (ndiscarded < count) {
|
||||
u8 dummy[Size];
|
||||
|
||||
if (!read_or_error({ dummy, min(Size, count - ndiscarded) }))
|
||||
return false;
|
||||
|
||||
ndiscarded += min(Size, count - ndiscarded);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
size_t buffered() const { return m_buffered; }
|
||||
// Reading from the stream returned here will most definitely brick the buffering behavior of Buffered.
|
||||
StreamType& underlying_stream() { return m_stream; }
|
||||
|
||||
private:
|
||||
Bytes buffer() const { return { m_buffer, Size }; }
|
||||
|
||||
mutable StreamType m_stream;
|
||||
mutable u8 m_buffer[Size];
|
||||
mutable size_t m_buffered { 0 };
|
||||
};
|
||||
|
||||
template<typename StreamType, size_t Size>
|
||||
requires(IsBaseOf<DeprecatedOutputStream, StreamType>) class Buffered<StreamType, Size> : public DeprecatedOutputStream {
|
||||
AK_MAKE_NONCOPYABLE(Buffered);
|
||||
|
||||
public:
|
||||
template<typename... Parameters>
|
||||
explicit Buffered(Parameters&&... parameters)
|
||||
: m_stream(forward<Parameters>(parameters)...)
|
||||
{
|
||||
}
|
||||
|
||||
Buffered(Buffered&& other)
|
||||
: m_stream(move(other.m_stream))
|
||||
{
|
||||
other.buffer().copy_to(buffer());
|
||||
m_buffered = exchange(other.m_buffered, 0);
|
||||
}
|
||||
|
||||
~Buffered()
|
||||
{
|
||||
if (m_buffered > 0)
|
||||
flush();
|
||||
}
|
||||
|
||||
bool has_recoverable_error() const override { return m_stream.has_recoverable_error(); }
|
||||
bool has_fatal_error() const override { return m_stream.has_fatal_error(); }
|
||||
bool has_any_error() const override { return m_stream.has_any_error(); }
|
||||
|
||||
bool handle_recoverable_error() override { return m_stream.handle_recoverable_error(); }
|
||||
bool handle_fatal_error() override { return m_stream.handle_fatal_error(); }
|
||||
bool handle_any_error() override { return m_stream.handle_any_error(); }
|
||||
|
||||
void set_recoverable_error() const override { return m_stream.set_recoverable_error(); }
|
||||
void set_fatal_error() const override { return m_stream.set_fatal_error(); }
|
||||
|
||||
size_t write(ReadonlyBytes bytes) override
|
||||
{
|
||||
if (has_any_error())
|
||||
return 0;
|
||||
|
||||
auto nwritten = bytes.copy_trimmed_to(buffer().slice(m_buffered));
|
||||
m_buffered += nwritten;
|
||||
|
||||
if (m_buffered == Size) {
|
||||
flush();
|
||||
|
||||
if (bytes.size() - nwritten >= Size)
|
||||
nwritten += m_stream.write(bytes.slice(nwritten));
|
||||
|
||||
nwritten += write(bytes.slice(nwritten));
|
||||
}
|
||||
|
||||
return nwritten;
|
||||
}
|
||||
|
||||
bool write_or_error(ReadonlyBytes bytes) override
|
||||
{
|
||||
write(bytes);
|
||||
return true;
|
||||
}
|
||||
|
||||
void flush()
|
||||
{
|
||||
m_stream.write_or_error({ m_buffer, m_buffered });
|
||||
m_buffered = 0;
|
||||
}
|
||||
|
||||
private:
|
||||
Bytes buffer() { return { m_buffer, Size }; }
|
||||
|
||||
StreamType m_stream;
|
||||
u8 m_buffer[Size];
|
||||
size_t m_buffered { 0 };
|
||||
};
|
||||
}
|
||||
|
||||
#if USING_AK_GLOBALLY
|
||||
using AK::Buffered;
|
||||
#endif
|
||||
Loading…
Reference in a new issue