Add color command

src/commands/color.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <all.hpp>
+
+class ColorCommand : public liteshell::BaseCommand
+{
+public:
+    ColorCommand()
+        : liteshell::BaseCommand(
+              "color",
+              "Change the text color in the shell",
+              "Specify a color in hex format to change the text color",
+              liteshell::CommandConstraint("color", "The color to set", true, false)) {}
+
+    DWORD run(const liteshell::Context &context)
+    {
+        std::string color = context.get("color");
+        utils::setColor(color);
+
+        std::cout << "Color changed to " << color << std::endl;
+        return 0;
+    }
+};

src/include/standard.hpp

@@ -8,6 +8,7 @@
 #include <optional>
 #include <sstream>
 #include <stack>
+#include <unordered_map>
 
 #include <pathcch.h>
 #include <windows.h>

src/include/utils.hpp

@@ -428,4 +428,46 @@ namespace utils
         std::transform(result.begin(), result.end(), result.begin(), tolower);
         return result;
     }
+
+    const boost::regex _hex_pattern("#[0-9a-fA-F]{6}");
+
+    /** @brief Check if a string is a valid hex representation */
+    bool isValidHexColor(const std::string &hexColor)
+    {
+        return boost::regex_match(hexColor, _hex_pattern);
+    }
+
+    void hexToRgb(const std::string &hex, int &r, int &g, int &b)
+    {
+        if (!isValidHexColor(hexColor))
+        {
+            throw std::invalid_argument("Error: Invalid hex color format " + hexColor);
+        }
+
+        std::stringstream ss;
+        ss << std::hex << hex.substr(1);
+        unsigned hexColor;
+        ss >> hexColor;
+        r = (hexColor >> 16) & 0xFF;
+        g = (hexColor >> 8) & 0xFF;
+        b = hexColor & 0xFF;
+    }
+
+    /** @brief Wrapper function to set color using hex code */
+    void setColor(const std::string &hexColor)
+    {
+        int r, g, b;
+        hexToRgb(hexColor, r, g, b);
+
+        HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
+        CONSOLE_SCREEN_BUFFER_INFOEX info;
+        info.cbSize = sizeof(CONSOLE_SCREEN_BUFFER_INFOEX);
+        GetConsoleScreenBufferInfoEx(hConsole, &info);
+
+        // Modify color table at index 1
+        info.ColorTable[10] = RGB(r, g, b);
+
+        SetConsoleScreenBufferInfoEx(hConsole, &info);
+        SetConsoleTextAttribute(hConsole, 10);
+    }
 }

src/initialize.hpp

@@ -5,6 +5,7 @@
 #include "commands/cat.hpp"
 #include "commands/cd.hpp"
 #include "commands/clear.hpp"
+#include "commands/color.hpp"
 #include "commands/date.hpp"
 #include "commands/echo.hpp"
 #include "commands/echoln.hpp"
@@ -31,6 +32,7 @@ void initialize(liteshell::Client *client)
     client->add_command<CatCommand>()
         ->add_command<CdCommand>()
         ->add_command<ClearCommand>()
+        ->add_command<ColorCommand>()
         ->add_command<DateCommand>()
         ->add_command<EchoCommand>()
         ->add_command<EcholnCommand>()