114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
#include "face_registry.hh"
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#include "exception.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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auto bg_it = std::find(facedesc.begin(), facedesc.end(), ',');
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auto attr_it = std::find(facedesc.begin(), facedesc.end(), '+');
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if (bg_it != facedesc.end() and attr_it < bg_it)
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throw runtime_error("invalid face description, expected <fg>[,<bg>][+<attr>]");
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Face res;
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res.fg = str_to_color({facedesc.begin(), std::min(attr_it, bg_it)});
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if (bg_it != facedesc.end())
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res.bg = str_to_color({bg_it+1, attr_it});
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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 '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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default: throw runtime_error("unknown face attribute '" + String(*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("alias '" + name + "' already defined");
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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("invalid alias 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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CandidateList res;
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auto real_prefix = prefix.substr(0, cursor_pos);
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for (auto& alias : m_aliases)
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{
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if (prefix_match(alias.first, real_prefix))
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res.push_back(alias.first);
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}
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return res;
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}
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FaceRegistry::FaceRegistry()
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: m_aliases{
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{ "PrimarySelection", Face{ Colors::White, Colors::Blue } },
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{ "SecondarySelection", Face{ Colors::Black, Colors::Blue } },
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{ "PrimaryCursor", Face{ Colors::Black, Colors::White } },
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{ "SecondaryCursor", Face{ Colors::Black, Colors::White } },
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{ "LineNumbers", Face{ Colors::Default, Colors::Default } },
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{ "MenuForeground", Face{ Colors::White, Colors::Blue } },
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{ "MenuBackground", Face{ Colors::Blue, Colors::White } },
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{ "Information", Face{ Colors::Black, Colors::Yellow } },
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{ "Error", Face{ Colors::Black, Colors::Red } },
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{ "StatusLine", Face{ Colors::Cyan, Colors::Default } },
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{ "StatusCursor", Face{ Colors::Black, Colors::Cyan } },
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{ "Prompt", Face{ Colors::Yellow, Colors::Default } },
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{ "MatchingChar", Face{ Colors::Default, Colors::Default, Attribute::Underline } },
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{ "Search", Face{ Colors::Default, Colors::Default, Attribute::Underline } },
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}
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{}
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}
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