5d80debc1f
Before this commit, we would jump to the first column after receiving
the '\n' line feed character. This is not the correct behavior, as it
should only move the cursor now. Translating the typed Return key into
the correct CR LF ("\r\n") is the TTY's job, which was fixed in #7184.
Fixes #6820
Fixes #6960
334 lines
8.3 KiB
C++
334 lines
8.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Noncopyable.h>
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#include <AK/NonnullOwnPtrVector.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <Kernel/API/KeyCode.h>
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#include <LibVT/EscapeSequenceParser.h>
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#include <LibVT/Position.h>
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#ifndef KERNEL
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# include <LibVT/Attribute.h>
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# include <LibVT/Line.h>
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#else
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namespace Kernel {
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class VirtualConsole;
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}
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# include <LibVT/Attribute.h>
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#endif
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namespace VT {
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class TerminalClient {
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public:
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virtual ~TerminalClient() { }
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virtual void beep() = 0;
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virtual void set_window_title(const StringView&) = 0;
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virtual void set_window_progress(int value, int max) = 0;
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virtual void terminal_did_resize(u16 columns, u16 rows) = 0;
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virtual void terminal_history_changed() = 0;
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virtual void emit(const u8*, size_t) = 0;
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};
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class Terminal : public EscapeSequenceExecutor {
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public:
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#ifndef KERNEL
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explicit Terminal(TerminalClient&);
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#else
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explicit Terminal(Kernel::VirtualConsole&);
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#endif
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virtual ~Terminal()
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{
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}
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bool m_need_full_flush { false };
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#ifndef KERNEL
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void invalidate_cursor();
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#else
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virtual void invalidate_cursor() = 0;
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#endif
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void on_input(u8);
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void set_cursor(unsigned row, unsigned column);
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#ifndef KERNEL
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void clear();
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void clear_including_history();
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#else
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virtual void clear() = 0;
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virtual void clear_including_history() = 0;
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#endif
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#ifndef KERNEL
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void set_size(u16 columns, u16 rows);
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#else
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virtual void set_size(u16 columns, u16 rows) = 0;
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#endif
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u16 columns() const
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{
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return m_columns;
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}
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u16 rows() const { return m_rows; }
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u16 cursor_column() const { return m_cursor_column; }
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u16 cursor_row() const { return m_cursor_row; }
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#ifndef KERNEL
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size_t line_count() const
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{
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return m_history.size() + m_lines.size();
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}
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Line& line(size_t index)
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{
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if (index < m_history.size())
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return m_history[(m_history_start + index) % m_history.size()];
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return m_lines[index - m_history.size()];
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}
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const Line& line(size_t index) const
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{
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return const_cast<Terminal*>(this)->line(index);
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}
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Line& visible_line(size_t index)
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{
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return m_lines[index];
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}
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const Line& visible_line(size_t index) const
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{
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return m_lines[index];
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}
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size_t max_history_size() const { return m_max_history_lines; }
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void set_max_history_size(size_t value)
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{
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if (value == 0) {
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m_max_history_lines = 0;
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m_history_start = 0;
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m_history.clear();
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m_client.terminal_history_changed();
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return;
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}
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if (m_max_history_lines > value) {
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NonnullOwnPtrVector<Line> new_history;
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new_history.ensure_capacity(value);
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auto existing_line_count = min(m_history.size(), value);
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for (size_t i = m_history.size() - existing_line_count; i < m_history.size(); ++i) {
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auto j = (m_history_start + i) % m_history.size();
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new_history.unchecked_append(move(static_cast<Vector<NonnullOwnPtr<Line>>&>(m_history).at(j)));
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}
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m_history = move(new_history);
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m_history_start = 0;
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m_client.terminal_history_changed();
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}
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m_max_history_lines = value;
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}
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size_t history_size() const { return m_history.size(); }
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#endif
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void inject_string(const StringView&);
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void handle_key_press(KeyCode, u32, u8 flags);
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#ifndef KERNEL
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Attribute attribute_at(const Position&) const;
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#endif
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protected:
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// ^EscapeSequenceExecutor
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virtual void emit_code_point(u32) override;
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virtual void execute_control_code(u8) override;
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virtual void execute_escape_sequence(Intermediates intermediates, bool ignore, u8 last_byte) override;
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virtual void execute_csi_sequence(Parameters parameters, Intermediates intermediates, bool ignore, u8 last_byte) override;
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virtual void execute_osc_sequence(OscParameters parameters, u8 last_byte) override;
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virtual void dcs_hook(Parameters parameters, Intermediates intermediates, bool ignore, u8 last_byte) override;
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virtual void receive_dcs_char(u8 byte) override;
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virtual void execute_dcs_sequence() override;
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void carriage_return();
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#ifndef KERNEL
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void scroll_up();
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void scroll_down();
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void linefeed();
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void put_character_at(unsigned row, unsigned column, u32 ch);
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void set_window_title(const String&);
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#else
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virtual void scroll_up() = 0;
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virtual void scroll_down() = 0;
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virtual void linefeed() = 0;
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virtual void put_character_at(unsigned row, unsigned column, u32 ch) = 0;
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virtual void set_window_title(const String&) = 0;
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#endif
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void unimplemented_control_code(u8);
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void unimplemented_escape_sequence(Intermediates, u8 last_byte);
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void unimplemented_csi_sequence(Parameters, Intermediates, u8 last_byte);
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void unimplemented_osc_sequence(OscParameters, u8 last_byte);
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void emit_string(const StringView&);
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void alter_mode(bool should_set, Parameters, Intermediates);
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// CUU – Cursor Up
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void CUU(Parameters);
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// CUD – Cursor Down
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void CUD(Parameters);
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// CUF – Cursor Forward
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void CUF(Parameters);
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// CUB – Cursor Backward
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void CUB(Parameters);
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// CUP - Cursor Position
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void CUP(Parameters);
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// ED - Erase in Display
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void ED(Parameters);
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// EL - Erase in Line
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void EL(Parameters);
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// SGR – Select Graphic Rendition
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void SGR(Parameters);
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// Save Current Cursor Position
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void SCOSC();
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// Restore Saved Cursor Position
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void SCORC(Parameters);
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// DECSTBM – Set Top and Bottom Margins ("Scrolling Region")
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void DECSTBM(Parameters);
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// RM – Reset Mode
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void RM(Parameters, Intermediates);
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// SM – Set Mode
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void SM(Parameters, Intermediates);
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// DA - Device Attributes
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void DA(Parameters);
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// HVP – Horizontal and Vertical Position
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void HVP(Parameters);
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// NEL - Next Line
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void NEL();
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// IND - Index (move down)
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void IND();
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// RI - Reverse Index (move up)
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void RI();
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// DSR - Device Status Reports
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void DSR(Parameters);
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#ifndef KERNEL
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// ICH - Insert Character
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void ICH(Parameters);
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#else
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virtual void ICH(Parameters) = 0;
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#endif
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// SU - Scroll Up (called "Pan Down" in VT510)
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void SU(Parameters);
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// SD - Scroll Down (called "Pan Up" in VT510)
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void SD(Parameters);
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#ifndef KERNEL
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// IL - Insert Line
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void IL(Parameters);
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// DCH - Delete Character
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void DCH(Parameters);
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// DL - Delete Line
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void DL(Parameters);
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#else
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virtual void IL(Parameters) = 0;
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virtual void DCH(Parameters) = 0;
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virtual void DL(Parameters) = 0;
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#endif
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// CHA - Cursor Horizontal Absolute
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void CHA(Parameters);
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// REP - Repeat
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void REP(Parameters);
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// VPA - Vertical Line Position Absolute
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void VPA(Parameters);
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// ECH - Erase Character
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void ECH(Parameters);
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// FIXME: Find the right names for these.
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void XTERM_WM(Parameters);
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#ifndef KERNEL
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TerminalClient& m_client;
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#else
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Kernel::VirtualConsole& m_client;
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#endif
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EscapeSequenceParser m_parser;
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#ifndef KERNEL
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size_t m_history_start = 0;
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NonnullOwnPtrVector<Line> m_history;
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void add_line_to_history(NonnullOwnPtr<Line>&& line)
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{
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if (max_history_size() == 0)
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return;
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if (m_history.size() < max_history_size()) {
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VERIFY(m_history_start == 0);
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m_history.append(move(line));
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return;
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}
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m_history.ptr_at(m_history_start) = move(line);
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m_history_start = (m_history_start + 1) % m_history.size();
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}
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NonnullOwnPtrVector<Line> m_lines;
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#endif
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size_t m_scroll_region_top { 0 };
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size_t m_scroll_region_bottom { 0 };
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u16 m_columns { 1 };
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u16 m_rows { 1 };
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u16 m_cursor_row { 0 };
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u16 m_cursor_column { 0 };
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u16 m_saved_cursor_row { 0 };
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u16 m_saved_cursor_column { 0 };
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bool m_swallow_current { false };
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bool m_stomp { false };
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Attribute m_current_attribute;
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Attribute m_saved_attribute;
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#ifndef KERNEL
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u32 m_next_href_id { 0 };
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#endif
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Vector<bool> m_horizontal_tabs;
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u32 m_last_code_point { 0 };
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size_t m_max_history_lines { 1024 };
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};
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}
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