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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 |= Attribute::Underline; break;
case 'r': res.attributes |= Attribute::Reverse; break;
case 'b': res.attributes |= Attribute::Bold; break;
case 'B': res.attributes |= Attribute::Blink; break;
case 'd': res.attributes |= Attribute::Dim; break;
default: throw runtime_error("unknown face attribute '" + String(*attr_it) + "'");
}
}
}
return res;
}
Face FaceRegistry::operator[](const String& facedesc)
{
auto it = m_aliases.find(facedesc);
while (it != m_aliases.end())
{
if (it->second.alias.empty())
return it->second.face;
it = m_aliases.find(it->second.alias);
}
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())
throw runtime_error("alias '" + name + "' already defined");
if (name.empty() or is_color_name(name) or
std::any_of(name.begin(), name.end(),
[](char c){ return not isalnum(c); }))
throw runtime_error("invalid alias name");
FaceOrAlias& alias = m_aliases[name];
auto it = m_aliases.find(facedesc);
if (it != m_aliases.end())
{
while (it != m_aliases.end())
{
if (it->second.alias.empty())
break;
if (it->second.alias == name)
throw runtime_error("face cycle detected");
it = m_aliases.find(it->second.alias);
}
alias.alias = facedesc;
}
else
{
alias.alias = "";
alias.face = 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", Face{ Colors::Cyan, Colors::Blue } },
{ "SecondarySelection", Face{ Colors::Black, Colors::Blue } },
{ "PrimaryCursor", Face{ Colors::Black, Colors::White } },
{ "SecondaryCursor", Face{ Colors::Black, Colors::White } },
{ "LineNumbers", Face{ Colors::Default, Colors::Default } },
{ "MenuForeground", Face{ Colors::White, Colors::Blue } },
{ "MenuBackground", Face{ Colors::Blue, Colors::White } },
{ "Information", Face{ Colors::Black, Colors::Yellow } },
{ "Error", Face{ Colors::Black, Colors::Red } },
{ "StatusLine", Face{ Colors::Cyan, Colors::Default } },
{ "StatusCursor", Face{ Colors::Black, Colors::Cyan } },
{ "Prompt", Face{ Colors::Yellow, Colors::Default } },
{ "MatchingChar", Face{ Colors::Default, Colors::Default, Attribute::Underline } },
{ "Search", Face{ Colors::Default, Colors::Default, Attribute::Underline } },
}
{}
}
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