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Add support for parsing SS3 key sequences

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As discussed on #3087, fixes part of that issue.
This commit is contained in:
Maxime Coste 2019-09-22 09:16:08 +10:00
parent 271b1d4f2f
commit df6d0355d6
1 changed files with 20 additions and 4 deletions
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24
src/ncurses_ui.cc
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@ -772,16 +772,32 @@ Optional<Key> NCursesUI::get_next_key()
return {}; return {};
}; };
auto parse_ss3 = [this]() -> Optional<Key> {
switch (get_char().value_or((unsigned char)0xff))
{
case 'A': return Key{Key::Up};
case 'B': return Key{Key::Down};
case 'C': return Key{Key::Right};
case 'D': return Key{Key::Left};
case 'F': return Key{Key::End};
case 'H': return Key{Key::Home};
case 'P': return Key{Key::F1};
case 'Q': return Key{Key::F2};
case 'R': return Key{Key::F3};
case 'S': return Key{Key::F4};
default: return {};
}
};
if (*c != 27) if (*c != 27)
return parse_key(*c); return parse_key(*c);
if (auto next = get_char()) if (auto next = get_char())
{ {
if (*next == '[') // potential CSI if (*next == '[') // potential CSI
{ return parse_csi().value_or(alt('['));
if (auto key = parse_csi()) if (*next == 'O') // potential SS3
return key; return parse_ss3().value_or(alt('O'));
}
return alt(parse_key(*next)); return alt(parse_key(*next));
} }
return Key{Key::Escape}; return Key{Key::Escape};