128 lines
4.7 KiB
C++
128 lines
4.7 KiB
C++
#include "face_registry.hh"
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#include "containers.hh"
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#include "exception.hh"
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#include "containers.hh"
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namespace Kakoune
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{
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static Face parse_face(StringView facedesc)
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{
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const String invalid_face_error = "invalid face description, expected <fg>[,<bg>][+<attr>]";
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auto bg_it = find(facedesc, ',');
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auto attr_it = find(facedesc, '+');
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if (bg_it != facedesc.end()
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and (attr_it < bg_it or (bg_it + 1) == facedesc.end()))
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throw runtime_error(invalid_face_error);
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if (attr_it != facedesc.end()
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and (attr_it + 1) == facedesc.end())
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throw runtime_error(invalid_face_error);
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Face res;
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res.fg = attr_it != facedesc.begin() ?
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str_to_color({facedesc.begin(), std::min(attr_it, bg_it)}) : Color::Default;
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if (bg_it != facedesc.end())
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res.bg = bg_it+1 != attr_it ? str_to_color({bg_it+1, attr_it}) : Color::Default;
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if (attr_it != facedesc.end())
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{
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for (++attr_it; attr_it != facedesc.end(); ++attr_it)
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{
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switch (*attr_it)
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{
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case 'e': res.attributes |= Attribute::Exclusive; break;
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case 'u': res.attributes |= Attribute::Underline; break;
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case 'r': res.attributes |= Attribute::Reverse; break;
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case 'b': res.attributes |= Attribute::Bold; break;
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case 'B': res.attributes |= Attribute::Blink; break;
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case 'd': res.attributes |= Attribute::Dim; break;
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case 'i': res.attributes |= Attribute::Italic; break;
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default: throw runtime_error(format("unknown face attribute '{}'", StringView{*attr_it}));
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}
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}
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}
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return res;
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}
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Face FaceRegistry::operator[](const String& facedesc)
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{
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auto it = m_aliases.find(facedesc);
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while (it != m_aliases.end())
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{
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if (it->second.alias.empty())
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return it->second.face;
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it = m_aliases.find(it->second.alias);
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}
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return parse_face(facedesc);
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}
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void FaceRegistry::register_alias(const String& name, const String& facedesc,
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bool override)
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{
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if (not override and m_aliases.find(name) != m_aliases.end())
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throw runtime_error(format("alias '{}' already defined", name));
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if (name.empty() or is_color_name(name) or
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std::any_of(name.begin(), name.end(),
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[](char c){ return not isalnum(c); }))
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throw runtime_error(format("invalid alias name: '{}'", name));
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if (name == facedesc)
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throw runtime_error(format("cannot alias face '{}' to itself", name));
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FaceOrAlias& alias = m_aliases[name];
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auto it = m_aliases.find(facedesc);
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if (it != m_aliases.end())
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{
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while (it != m_aliases.end())
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{
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if (it->second.alias.empty())
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break;
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if (it->second.alias == name)
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throw runtime_error("face cycle detected");
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it = m_aliases.find(it->second.alias);
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}
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alias.alias = facedesc;
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}
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else
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{
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alias.alias = "";
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alias.face = parse_face(facedesc);
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}
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}
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CandidateList FaceRegistry::complete_alias_name(StringView prefix,
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ByteCount cursor_pos) const
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{
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using ValueType = std::pair<String, FaceOrAlias>;
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return complete(prefix, cursor_pos,
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transformed(m_aliases,
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[](const ValueType& v){ return v.first; }));
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}
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FaceRegistry::FaceRegistry()
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: m_aliases{
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{ "Default", Face{ Color::Default, Color::Default } },
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{ "PrimarySelection", Face{ Color::White, Color::Blue } },
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{ "SecondarySelection", Face{ Color::Black, Color::Blue } },
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{ "PrimaryCursor", Face{ Color::Black, Color::White } },
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{ "SecondaryCursor", Face{ Color::Black, Color::White } },
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{ "LineNumbers", Face{ Color::Default, Color::Default } },
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{ "LineNumberCursor", Face{ Color::Default, Color::Default, Attribute::Reverse } },
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{ "MenuForeground", Face{ Color::White, Color::Blue } },
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{ "MenuBackground", Face{ Color::Blue, Color::White } },
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{ "MenuInfo", Face{ Color::Cyan, Color::Default } },
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{ "Information", Face{ Color::Black, Color::Yellow } },
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{ "Error", Face{ Color::Black, Color::Red } },
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{ "StatusLine", Face{ Color::Cyan, Color::Default } },
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{ "StatusLineMode", Face{ Color::Yellow, Color::Default } },
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{ "StatusLineInfo", Face{ Color::Blue, Color::Default } },
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{ "StatusLineValue", Face{ Color::Green, Color::Default } },
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{ "StatusCursor", Face{ Color::Black, Color::Cyan } },
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{ "Prompt", Face{ Color::Yellow, Color::Default } },
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{ "MatchingChar", Face{ Color::Default, Color::Default, Attribute::Bold } },
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}
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{}
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}
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