mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 11:42:38 +03:00
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/CircularDeque.h>
|
|
#include <AK/WeakPtr.h>
|
|
#include <Kernel/Devices/CharacterDevice.h>
|
|
#include <Kernel/DoubleBuffer.h>
|
|
#include <Kernel/ProcessGroup.h>
|
|
#include <Kernel/UnixTypes.h>
|
|
|
|
#define TTY_BUFFER_SIZE 1024
|
|
|
|
namespace Kernel {
|
|
|
|
class TTY : public CharacterDevice {
|
|
public:
|
|
virtual ~TTY() override;
|
|
|
|
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
|
|
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override;
|
|
virtual bool can_read(OpenFileDescription const&, u64) const override;
|
|
virtual bool can_write(OpenFileDescription const&, u64) const override;
|
|
virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override final;
|
|
|
|
unsigned short rows() const { return m_rows; }
|
|
unsigned short columns() const { return m_columns; }
|
|
|
|
ProcessGroupID pgid() const
|
|
{
|
|
if (auto pg = m_pg.strong_ref())
|
|
return pg->pgid();
|
|
return 0;
|
|
}
|
|
|
|
ErrorOr<void> set_termios(termios const&);
|
|
bool should_generate_signals() const { return (m_termios.c_lflag & ISIG) == ISIG; }
|
|
bool should_flush_on_signal() const { return (m_termios.c_lflag & NOFLSH) != NOFLSH; }
|
|
bool should_echo_input() const { return (m_termios.c_lflag & ECHO) == ECHO; }
|
|
bool in_canonical_mode() const { return (m_termios.c_lflag & ICANON) == ICANON; }
|
|
|
|
void set_default_termios();
|
|
void hang_up();
|
|
|
|
virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_name() const = 0;
|
|
|
|
protected:
|
|
virtual ErrorOr<size_t> on_tty_write(UserOrKernelBuffer const&, size_t) = 0;
|
|
void set_size(unsigned short columns, unsigned short rows);
|
|
|
|
TTY(MajorNumber major, MinorNumber minor);
|
|
void emit(u8, bool do_evaluate_block_conditions = false);
|
|
void echo_with_processing(u8);
|
|
|
|
bool can_do_backspace() const;
|
|
void do_backspace();
|
|
void erase_word();
|
|
void erase_character();
|
|
void kill_line();
|
|
void flush_input();
|
|
|
|
bool is_eol(u8) const;
|
|
bool is_eof(u8) const;
|
|
bool is_kill(u8) const;
|
|
bool is_erase(u8) const;
|
|
bool is_werase(u8) const;
|
|
|
|
void generate_signal(int signal);
|
|
|
|
int m_available_lines { 0 };
|
|
|
|
private:
|
|
// ^CharacterDevice
|
|
virtual bool is_tty() const final override { return true; }
|
|
|
|
virtual void echo(u8) = 0;
|
|
|
|
template<typename Functor>
|
|
void process_output(u8, Functor put_char);
|
|
|
|
CircularDeque<u8, TTY_BUFFER_SIZE> m_input_buffer;
|
|
// FIXME: use something like AK::Bitmap but which takes a size template parameter
|
|
u8 m_special_character_bitmask[TTY_BUFFER_SIZE / 8];
|
|
|
|
WeakPtr<Process> m_original_process_parent;
|
|
WeakPtr<ProcessGroup> m_pg;
|
|
termios m_termios;
|
|
unsigned short m_rows { 0 };
|
|
unsigned short m_columns { 0 };
|
|
};
|
|
|
|
}
|