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LibVT: Keep track of the 'true' line endings

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This commit is contained in:
Ali Mohammad Pur 2021-06-19 18:17:18 +04:30 • committed by Andreas Kling
parent c38fafbf4e
commit 424965954f
4 changed files with 35 additions and 0 deletions
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15
Userland/Libraries/LibVT/Terminal.cpp
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@ -9,6 +9,7 @@
#include <AK/Debug.h>
#include <AK/StringBuilder.h>
#include <AK/StringView.h>
#include <AK/TemporaryChange.h>
#include <LibVT/Color.h>
#include <LibVT/Terminal.h>
#ifdef KERNEL
@ -706,6 +707,10 @@ void Terminal::DCH(Parameters params)
void Terminal::linefeed()
{
u16 new_row = cursor_row();
#ifndef KERNEL
if (!m_controls_are_logically_generated)
active_buffer()[new_row].set_terminated(m_column_before_carriage_return.value_or(cursor_column()));
#endif
if (cursor_row() == m_scroll_region_bottom) {
scroll_up();
} else {
@ -719,6 +724,7 @@ void Terminal::linefeed()
void Terminal::carriage_return()
{
dbgln_if(TERMINAL_DEBUG, "Carriage return");
m_column_before_carriage_return = cursor_column();
set_cursor(cursor_row(), 0);
}
@ -967,6 +973,7 @@ void Terminal::emit_code_point(u32 code_point)
}
if (m_stomp) {
m_stomp = false;
TemporaryChange change { m_controls_are_logically_generated, true };
carriage_return();
linefeed();
put_character_at(cursor_row(), cursor_column(), code_point);
@ -980,6 +987,11 @@ void Terminal::emit_code_point(u32 code_point)
void Terminal::execute_control_code(u8 code)
{
ArmedScopeGuard clear_position_before_cr {
[&] {
m_column_before_carriage_return.clear();
}
};
switch (code) {
case '\a':
m_client.beep();
@ -1002,10 +1014,13 @@ void Terminal::execute_control_code(u8 code)
case '\n':
case '\v':
case '\f':
if (m_column_before_carriage_return == m_columns - 1)
m_column_before_carriage_return = m_columns;
linefeed();
return;
case '\r':
carriage_return();
clear_position_before_cr.disarm();
return;
default:
unimplemented_control_code(code);