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LibVT: Implement G0..G3 and VT100 translation table

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This commit is contained in:
Jelle Raaijmakers 2021-09-30 13:58:12 +02:00 • committed by Linus Groh
parent aaa1382bd6
commit 49ccda5d97
3 changed files with 106 additions and 1 deletions
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43
Userland/Libraries/LibVT/Terminal.cpp
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@ -998,6 +998,9 @@ void Terminal::on_input(u8 byte)
void Terminal::emit_code_point(u32 code_point)
{
auto working_set = m_working_sets[m_active_working_set_index];
code_point = m_character_set_translator.translate_code_point(working_set, code_point);
auto new_column = cursor_column() + 1;
if (new_column < columns()) {
put_character_at(cursor_row(), cursor_column(), code_point);
@ -1099,7 +1102,13 @@ void Terminal::execute_escape_sequence(Intermediates intermediates, bool ignore,
DECPNM();
return;
}
} else if (intermediates[0] == '#') {
unimplemented_escape_sequence(intermediates, last_byte);
return;
}
char intermediate = intermediates[0];
switch (intermediate) {
case '#':
switch (last_byte) {
case '8':
// Confidence Test - Fill screen with E's
@ -1110,7 +1119,39 @@ void Terminal::execute_escape_sequence(Intermediates intermediates, bool ignore,
}
return;
}
break;
case '(':
case ')':
case '*':
case '+':
// Determine G0..G3 index
size_t working_set_index = intermediate - '(';
CharacterSet new_set;
switch (last_byte) {
case 'B':
new_set = CharacterSet::Iso_8859_1;
break;
case '0':
new_set = CharacterSet::VT100;
break;
case 'U':
new_set = CharacterSet::Null;
break;
case 'K':
new_set = CharacterSet::UserDefined;
break;
default:
unimplemented_escape_sequence(intermediates, last_byte);
return;
}
dbgln_if(TERMINAL_DEBUG, "Setting G{} working set to character set {}", working_set_index, to_underlying(new_set));
VERIFY(working_set_index <= 3);
m_working_sets[working_set_index] = new_set;
return;
}
unimplemented_escape_sequence(intermediates, last_byte);
}