kakoune/src/face_registry.cc

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#include "face_registry.hh"
#include "exception.hh"
namespace Kakoune
{
static Face parse_face(StringView facedesc)
{
auto bg_it = std::find(facedesc.begin(), facedesc.end(), ',');
auto attr_it = std::find(facedesc.begin(), facedesc.end(), '+');
if (bg_it != facedesc.end() and attr_it < bg_it)
throw runtime_error("invalid face description, expected <fg>[,<bg>][+<attr>]");
Face res;
res.fg = str_to_color({facedesc.begin(), std::min(attr_it, bg_it)});
if (bg_it != facedesc.end())
res.bg = str_to_color({bg_it+1, attr_it});
if (attr_it != facedesc.end())
{
for (++attr_it; attr_it != facedesc.end(); ++attr_it)
{
switch (*attr_it)
{
case 'u': res.attributes |= Underline; break;
case 'r': res.attributes |= Reverse; break;
case 'b': res.attributes |= Bold; break;
default: throw runtime_error("unknown face attribute '" + String(*attr_it) + "'");
}
}
}
return res;
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}
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Face FaceRegistry::operator[](const String& facedesc)
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{
auto it = m_aliases.find(facedesc);
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if (it != m_aliases.end())
return it->second;
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return parse_face(facedesc);
}
void FaceRegistry::register_alias(const String& name, const String& facedesc,
bool override)
{
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
find_if(name, [](char c){ return not isalnum(c); }) != name.end())
throw runtime_error("invalid alias name");
auto it = m_aliases.find(facedesc);
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m_aliases[name] = (it != m_aliases.end()) ?
it->second : parse_face(facedesc);
}
CandidateList FaceRegistry::complete_alias_name(StringView prefix,
ByteCount cursor_pos) const
{
CandidateList res;
auto real_prefix = prefix.substr(0, cursor_pos);
for (auto& alias : m_aliases)
{
if (prefix_match(alias.first, real_prefix))
res.push_back(alias.first);
}
return res;
}
FaceRegistry::FaceRegistry()
: m_aliases{
{ "PrimarySelection", { Colors::Cyan, Colors::Blue } },
{ "SecondarySelection", { Colors::Black, Colors::Blue } },
{ "PrimaryCursor", { Colors::Black, Colors::White } },
{ "SecondaryCursor", { Colors::Black, Colors::White } },
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{ "LineNumbers", { Colors::Default, Colors::Default } },
{ "MenuForeground", { Colors::White, Colors::Blue } },
{ "MenuBackground", { Colors::Blue, Colors::White } },
{ "Information", { Colors::Black, Colors::Yellow } },
{ "Error", { Colors::Black, Colors::Red } },
{ "StatusLine", { Colors::Cyan, Colors::Default } },
{ "StatusCursor", { Colors::Black, Colors::Cyan } },
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{ "Prompt", { Colors::Yellow, Colors::Default } },
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{ "MatchingChar", { Colors::Default, Colors::Default, Underline } },
{ "Search", { Colors::Default, Colors::Default, Underline } },
}
{}
}