mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 07:30:19 +00:00
b9b7b2b28a
Almost everyone using this API actually wanted String instead of a ByteBuffer anyway, and there were a bunch of slightly different ways clients would convert to String. Let's just cut out all the confusion and make it return String. :^)
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Forward.h>
|
|
#include <LibCore/Object.h>
|
|
|
|
namespace Core {
|
|
|
|
class IODevice : public Object {
|
|
C_OBJECT_ABSTRACT(IODevice)
|
|
public:
|
|
enum OpenMode {
|
|
NotOpen = 0,
|
|
ReadOnly = 1,
|
|
WriteOnly = 2,
|
|
ReadWrite = 3,
|
|
Append = 4,
|
|
Truncate = 8,
|
|
MustBeNew = 16,
|
|
};
|
|
|
|
virtual ~IODevice() override;
|
|
|
|
int fd() const { return m_fd; }
|
|
unsigned mode() const { return m_mode; }
|
|
bool is_open() const { return m_mode != NotOpen; }
|
|
bool eof() const { return m_eof; }
|
|
|
|
int error() const { return m_error; }
|
|
const char* error_string() const;
|
|
|
|
bool has_error() const { return m_error != 0; }
|
|
|
|
int read(u8* buffer, int length);
|
|
|
|
ByteBuffer read(size_t max_size);
|
|
ByteBuffer read_all();
|
|
String read_line(size_t max_size = 16384);
|
|
|
|
bool write(const u8*, int size);
|
|
bool write(const StringView&);
|
|
|
|
bool truncate(off_t);
|
|
|
|
bool can_read_line() const;
|
|
|
|
bool can_read() const;
|
|
|
|
enum class SeekMode {
|
|
SetPosition,
|
|
FromCurrentPosition,
|
|
FromEndPosition,
|
|
};
|
|
|
|
bool seek(i64, SeekMode = SeekMode::SetPosition, off_t* = nullptr);
|
|
|
|
virtual bool open(IODevice::OpenMode) = 0;
|
|
virtual bool close();
|
|
|
|
int printf(const char*, ...);
|
|
|
|
protected:
|
|
explicit IODevice(Object* parent = nullptr);
|
|
|
|
void set_fd(int);
|
|
void set_mode(OpenMode mode) { m_mode = mode; }
|
|
void set_error(int error) const { m_error = error; }
|
|
void set_eof(bool eof) const { m_eof = eof; }
|
|
|
|
virtual void did_update_fd(int) { }
|
|
|
|
private:
|
|
bool populate_read_buffer() const;
|
|
bool can_read_from_fd() const;
|
|
|
|
int m_fd { -1 };
|
|
OpenMode m_mode { NotOpen };
|
|
mutable int m_error { 0 };
|
|
mutable bool m_eof { false };
|
|
mutable Vector<u8> m_buffered_data;
|
|
};
|
|
|
|
}
|