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Kernel: Add partial support for shell

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We don't handle arrow keys, and the tty does not know how to clear
the screeen :D
This commit is contained in:
Bananymous
2023-04-05 01:30:58 +03:00
parent af0979ec32
commit 4f522d337a
5 changed files with 46 additions and 175 deletions
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18
kernel/kernel/Terminal/TTY.cpp
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@@ -92,6 +92,7 @@ namespace Kernel
ansi = "\n";
break;
case Input::Key::Backspace:
ansi = nullptr;
if (m_output.bytes > 0)
{
// Multibyte UTF8
@@ -103,19 +104,20 @@ namespace Kernel
ASSERT(m_output.bytes > 0);
m_output.bytes--;
}
ansi = "\b \b";
do_backspace();
}
// Control sequence
else if (m_output.bytes >= 2 && m_output.buffer[m_output.bytes - 2] == '\e')
{
m_output.bytes -= 2;
ansi = "\b\b \b\b";
do_backspace();
do_backspace();
}
// Ascii
else
{
m_output.bytes--;
ansi = "\b \b";
do_backspace();
}
}
break;
@@ -156,6 +158,16 @@ namespace Kernel
m_terminal_driver->clear(m_background);
}
void TTY::do_backspace()
{
if (m_column > 0)
{
m_column--;
putchar_at(' ', m_column, m_row);
set_cursor_position(m_column, m_row);
}
}
void TTY::set_cursor_position(uint32_t x, uint32_t y)
{
static uint32_t last_x = -1;