feat(parser): add platform-specific parsers and argument conventions

Implement platform-specific parsers for Windows, Linux, and macOS
Add GNU argument convention implementations
Create fake parser for testing purposes
Update CMakeLists to include new headers

include/argparse

@@ -0,0 +1,27 @@
+#pragma once
+#ifndef ARGPARSE_HPP
+#define ARGPARSE_HPP
+#include <argument_parser.hpp>
+#
+#ifdef __linux__
+#include <linux_parser.hpp>
+namespace argument_parser {
+    using parser = linux_parser; 
+}
+#elif __APPLE__
+#include <macos_parser.hpp>
+namespace argument_parser {
+    using parser = macos_parser; 
+}
+#elif _WIN32
+#include <windows_parser.hpp>
+namespace argument_parser {
+    using parser = windows_parser; 
+}
+#else
+#error "Unsupported platform"
+#endif
+#endif
+
+#include <base_convention.hpp>
+#include <gnu_argument_convention.hpp>

include/parser/argument_parser.hpp

@@ -1,5 +1,5 @@
 #pragma once
-#include "base_convention.hpp"
+#include <base_convention.hpp>
 #include <atomic>
 #include <cstdlib>
 #include <functional>
@@ -17,6 +17,7 @@
 #include <type_traits>
 #include <string>
 
+
 namespace argument_parser {
     namespace function {
         template<typename fn>
@@ -501,6 +502,8 @@ namespace argument_parser {
 
         friend class linux_parser; 
         friend class windows_parser; 
+        friend class macos_parser; 
+        friend class fake_parser; 
     };
 }
 

include/parser/fake_parser.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#ifndef FAKE_PARSER_HPP
+#define FAKE_PARSER_HPP
+
+#include <argument_parser.hpp>
+#include <crt_externs.h>
+#include <initializer_list>
+#include <string>
+
+namespace argument_parser {
+    class fake_parser : public base_parser {
+        public: 
+        fake_parser(std::string const& program_name, std::vector<std::string> const& arguments) {
+            this->program_name = program_name;
+            parsed_arguments = arguments;
+        }
+
+        fake_parser(std::string const& program_name, std::vector<std::string>&& arguments) {
+            this->program_name = program_name;
+            parsed_arguments = std::move(arguments);
+        }
+
+        fake_parser(std::string const& program_name, std::initializer_list<std::string> const& arguments) : 
+            fake_parser(program_name, std::vector<std::string>(arguments)) {}
+    }; 
+}
+
+#endif

include/parser/platform_headers/linux_parser.hpp

@@ -1,11 +1,11 @@
 #pragma once
-#include <fstream>
-#include <string>
 
 #ifdef __linux__
 #ifndef LINUX_PARSER_HPP
+#include <fstream>
+#include <string>
 
-#include "argument_parser.hpp"
+#include <argument_parser.hpp>
 
 namespace argument_parser {
     class linux_parser : public base_parser {

include/parser/platform_headers/macos_parser.hpp

@@ -0,0 +1,27 @@
+#pragma once
+#ifdef __APPLE__
+#ifndef MACOS_PARSER_HPP
+#define MACOS_PARSER_HPP
+
+#include <argument_parser.hpp>
+#include <crt_externs.h>
+#include <string>
+
+namespace argument_parser {
+    class macos_parser : public base_parser {
+        public: 
+        macos_parser() {
+            int argc = *_NSGetArgc();
+            char **argv = *_NSGetArgv();
+            if (argc > 0 && argv != nullptr && argv[0] != nullptr) {
+                program_name = argv[0];
+                for (int i = 1; i < argc; ++i) {
+                    if (argv[i] != nullptr) parsed_arguments.emplace_back(argv[i]);
+                }
+            }
+        }
+    }; 
+}
+
+#endif
+#endif

include/parser/platform_headers/windows_parser.hpp

@@ -2,7 +2,7 @@
 #ifdef _WIN32
 #ifndef WINDOWS_PARSER_HPP
 
-#include "argument_parser.hpp"
+#include <argument_parser.hpp>
 #include <fstream>
 #include <string>
 
@@ -11,7 +11,9 @@ namespace argument_parser {
         public: 
         windows_parser() {
         }
-    }; 
+    };
+
+    using parser = windows_parser; 
 }
 
 #endif