Barely working ansi color codes parser but I _really_ don't like this one. Too much code to just get it to process correctly which means it'll be brittle as hell later.

tests/ansi_parser.cpp

@@ -0,0 +1,59 @@
+#include <catch2/catch_test_macros.hpp>
+#include <fmt/core.h>
+#include <string>
+#include "ansi_parser.hpp"
+
+
+#include "ftxui/dom/elements.hpp"  // for text, bgcolor, color, vbox, hbox, separator, operator|, Elements, Element, Fit, border
+#include "ftxui/dom/node.hpp"      // for Render
+#include "ftxui/screen/color.hpp"  // for Color, Color::Black, Color::Blue, Color::BlueLight, Color::Cyan, Color::CyanLight, Color::Default, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::RedLight, Color::White, Color::Yellow, Color::YellowLight, Color::Palette256, ftxui
+#include <ftxui/screen/color_info.hpp>  // for ColorInfo
+#include <ftxui/screen/screen.hpp>      // for Full, Screen
+#include <ftxui/screen/terminal.hpp>  // for ColorSupport, Color, Palette16, Palette256, TrueColor
+
+
+using namespace fmt;
+using namespace ftxui;
+
+std::string generate_colors() {
+  const int max_value = 255;
+  const int value_increment = 8;
+  const int hue_increment = 6;
+  int saturation = max_value;
+  Elements array;
+  int count = 0;
+
+  for (int value = 0; value < max_value; value += 2 * value_increment) {
+    Elements line;
+    for (int hue = 0; hue < max_value; hue += hue_increment) {
+      line.push_back(
+          text("#")                                    //
+          | color(Color::HSV(hue, saturation, value))  //
+          | bgcolor(Color::HSV(hue, saturation, value + value_increment)));
+      count++;
+    }
+    array.push_back(hbox(std::move(line)));
+    break; /// UNDO ME
+  }
+
+  println("MADE {} CHARS", count);
+
+  auto true_color_display = vbox({
+      vbox(std::move(array)),
+  });
+
+  auto document = vbox({hbox({
+      true_color_display,
+  })});
+
+  auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
+  Render(screen, document);
+  return screen.ToString();
+}
+
+TEST_CASE("test out ragel parser", "[gui]") {
+  std::string colors = generate_colors();
+
+  println("--- PARSING");
+  REQUIRE(parse_ansi(colors));
+}