113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
#include "keys.hh"
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#include "utils.hh"
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namespace Kakoune
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{
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Key canonicalize_ifn(Key key)
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{
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if (key.key > 0 and key.key < 27)
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{
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assert(key.modifiers == Key::Modifiers::None);
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key.modifiers = Key::Modifiers::Control;
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key.key = key.key - 1 + 'a';
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}
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return key;
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}
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using KeyAndName = std::pair<String, Codepoint>;
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static std::vector<KeyAndName> keynamemap = {
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{ "ret", '\r' },
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{ "space", ' ' },
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{ "tab", '\t' },
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{ "backspace", Key::Backspace},
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{ "esc", Key::Escape },
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{ "up", Key::Up },
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{ "down", Key::Down},
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{ "left", Key::Left },
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{ "right", Key::Right },
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{ "pageup", Key::PageUp },
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{ "pagedown", Key::PageDown },
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{ "home", Key::Home },
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{ "end", Key::End },
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{ "backtab", Key::BackTab },
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};
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KeyList parse_keys(const String& str)
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{
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KeyList result;
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for (ByteCount pos = 0; pos < str.length(); ++pos)
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{
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if (str[pos] == '<')
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{
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ByteCount end_pos = pos;
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while (end_pos < str.length() and str[end_pos] != '>')
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++end_pos;
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if (end_pos < str.length())
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{
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Key::Modifiers modifier = Key::Modifiers::None;
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String keyname = str.substr(pos+1, end_pos - pos - 1);
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if (keyname.length() > 2)
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{
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if (tolower(keyname[0]) == 'c' and keyname[1] == '-')
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{
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modifier = Key::Modifiers::Control;
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keyname = keyname.substr(2_byte);
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}
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if (tolower(keyname[0]) == 'a' and keyname[1] == '-')
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{
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modifier = Key::Modifiers::Alt;
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keyname = keyname.substr(2_byte);
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}
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}
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if (keyname.length() == 1)
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{
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result.push_back(Key{ modifier, Codepoint(keyname[0]) });
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pos = end_pos;
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continue;
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}
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auto it = find_if(keynamemap, [&keyname](const KeyAndName& item)
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{ return item.first == keyname; });
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if (it != keynamemap.end())
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{
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Key key = canonicalize_ifn(Key{ modifier, it->second });
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result.push_back(key);
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pos = end_pos;
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continue;
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}
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}
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}
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result.push_back({Key::Modifiers::None, Codepoint(str[pos])});
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}
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return result;
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}
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String key_to_str(const Key& key)
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{
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bool named = false;
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String res;
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auto it = find_if(keynamemap, [&key](const KeyAndName& item)
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{ return item.second == key.key; });
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if (it != keynamemap.end())
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{
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named = true;
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res = it->first;
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}
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else
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res = codepoint_to_str(key.key);
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switch (key.modifiers)
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{
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case Key::Modifiers::Control: res = "c-" + res; named = true; break;
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case Key::Modifiers::Alt: res = "a-" + res; named = true; break;
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default: break;
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}
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if (named)
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res = '<' + res + '>';
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return res;
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}
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}
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