kakoune/src/color_registry.cc

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#include "color_registry.hh"
#include "exception.hh"
namespace Kakoune
{
static Color parse_color(const String& color)
{
if (color == "default") return Color::Default;
if (color == "black") return Color::Black;
if (color == "red") return Color::Red;
if (color == "green") return Color::Green;
if (color == "yellow") return Color::Yellow;
if (color == "blue") return Color::Blue;
if (color == "magenta") return Color::Magenta;
if (color == "cyan") return Color::Cyan;
if (color == "white") return Color::White;
throw runtime_error("Unable to parse color '" + color + "'");
return Color::Default;
}
const ColorPair& ColorRegistry::operator[](const String& colordesc)
{
auto alias_it = m_aliases.find(colordesc);
if (alias_it != m_aliases.end())
return alias_it->second;
auto it = std::find(colordesc.begin(), colordesc.end(), ',');
ColorPair colpair{ parse_color(String(colordesc.begin(), it)),
it != colordesc.end() ?
parse_color(String(it+1, colordesc.end()))
: Color::Default };
m_aliases[colordesc] = colpair;
}
void ColorRegistry::register_alias(const String& name, const String& colordesc)
{
if (m_aliases.find(name) != m_aliases.end())
throw runtime_error("alias '" + name + "' already defined");
if (std::find_if(name.begin(), name.end(),
[](Character c) { return not isalnum(c); }) != name.end())
throw runtime_error("alias names are limited to alpha numeric words");
auto it = std::find(colordesc.begin(), colordesc.end(), ',');
auto fg = parse_color(String(colordesc.begin(), it));
auto bg = Color::Default;
if (it != colordesc.end())
bg = parse_color(String(it+1, colordesc.end()));
m_aliases[name] = { fg, bg };
}
}