Winapi/win32 Files attributes

attrib.cpp

#include <iostream>
#include <windows.h>
#include <string>

#define disp(expr) std::cerr << std::boolalpha << __FILE__ << ":" << __LINE__ << ":" \
							 << " ; " << #expr << " = " << (expr) << std::endl

void showFileAttributes(std::string path)
{
	DWORD attr = GetFileAttributesA(path.c_str());
	disp(attr);
	bool isInvalid = attr == INVALID_FILE_ATTRIBUTES;
	bool exists = !isInvalid;
	bool isDirectory = exists && static_cast<bool>(attr & FILE_ATTRIBUTE_DIRECTORY);
	bool isFile = exists && !static_cast<bool>(attr & FILE_ATTRIBUTE_DIRECTORY);
	std::cout << "File attributes for path = " << path << std::endl;
	std::cout << std::boolalpha
			  << "Is invalid file attribute = " << isInvalid << std::endl
			  << "File exists               = " << exists << std::endl
			  << "Is directory              = " << isDirectory << std::endl
			  << "Is file                   = " << isFile << std::endl;
	std::cout << "--------------------------------" << std::endl
			  << std::endl;
}

bool fileExists(std::string path)
{
	DWORD attr = GetFileAttributesA(path.c_str());
	return !(attr == INVALID_FILE_ATTRIBUTES) && !(attr & FILE_ATTRIBUTE_DIRECTORY);
}

bool dirExists(std::string path)
{
	DWORD attr = GetFileAttributesA(path.c_str());
	return !(attr == INVALID_FILE_ATTRIBUTES) && (attr & FILE_ATTRIBUTE_DIRECTORY);
}

// Get Path to current program / Application 
std::string pathToThisProgram()
{
	std::string result(MAX_PATH, 0);
	int n = GetModuleFileNameA(NULL, &result[0], MAX_PATH);
	result.resize(n);
	return result;
}

std::string getEnvironment(std::string varname)
{
	static int size = 32767;
	std::string result(size, 0);
	DWORD n = GetEnvironmentVariableA(varname.c_str(), &result[0], size);
	result.resize(n);
	return result;
}

int main()
{

	std::cout << "Path to this program = "
			  << pathToThisProgram() << std::endl;
	std::cout << "Evironment variable => %USERPROFILE% = "
			  << getEnvironment("USERPROFILE") << std::endl;
	std::cout << "Evironment variable => %SYSTEMROOT% = "
			  << getEnvironment("SYSTEMROOT") << std::endl;
	std::cout << "Evironment variable => %WRONGVAR% = "
			  << getEnvironment("WRONGVAR") << std::endl;

	std::string thisprog = pathToThisProgram();
	std::string dest = getEnvironment("USERPROFILE") + "\\Desktop\\app.exe";
	// Copy file to Desktop
	if (fileExists(dest))
	{
		std::cout << " ==> File " << dest << " exists - removing it ... " << std::endl;
		DeleteFileA(dest.c_str());
	}
	bool result = CopyFileA(thisprog.c_str(), dest.c_str(), TRUE);
	std::cout << "Copy successful? = " << std::boolalpha << result << std::endl;

	//Delete this executable
	bool result2 = DeleteFileA(thisprog.c_str());
	std::cout << "Delete successful? = " << std::boolalpha << result2 << std::endl;

	std::cout << "-------------------------------" << std::endl;

	showFileAttributes("C:\\Windows\\System32");
	showFileAttributes("C:/Windows/System32");
	showFileAttributes("C:\\Windows\\System32\\cmd.exe");
	showFileAttributes("C:\\Windows\\System32DONOT_EXISTS");

	disp(fileExists("C:\\Windows\\System32"));
	disp(fileExists("C:/Windows/System32"));
	// Windows file system is case insensitive!
	disp(fileExists("C:\\Windows\\System32\\cmd.exe"));
	disp(fileExists("C:\\Windows\\System32\\CMD.EXE"));
	disp(fileExists("C:\\Windows\\System32\\kernel32.dll"));
	disp(fileExists("C:\\Windows\\System32DONOT_EXISTS"));

	std::cout << std::endl;

	disp(dirExists("C:\\Windows\\System32"));
	disp(dirExists("C:/Windows/System32"));
	disp(dirExists("C:\\Windows\\System32\\cmd.exe"));
	disp(dirExists("C:\\Windows\\System32\\CMD.EXE"));
	disp(dirExists("C:\\Windows\\System32\\kernel32.dll"));
	disp(dirExists("C:\\Windows\\System32DONOT_EXISTS"));
	disp(dirExists("C:\\$Recycle.bin"));

	return 0;
}

build_msvc.bat

REM Build script for compiling with MSVC (aka Visual C++, cl.exe) on Windows
@echo OFF

REM Automate CMake Compilation on Windows     

cmake -H. -B_build -G "Visual Studio 15 2017 Win64"
cmake --build _build --target    

CMakeLists.txt

cmake_minimum_required(VERSION 3.9)
project(WindowsExploration)

#========== Global Configurations =============#
#----------------------------------------------#
set(CMAKE_CXX_STANDARD 17)     
set(CMAKE_VERBOSE_MAKEFILE ON)

#========== Targets Configurations ============#
add_executable(attrib attrib.cpp)

Makefile

# GNU Make file script for easier compilation from
# command line

debug:
	cmake -B_build -H. -DCMAKE_BUILD_TYPE=Debug
	cmake --build _build --target

release:
	cmake -B_build -H. -DCMAKE_BUILD_TYPE=Release
	cmake --build _build --target

clean:
	rm -rfv ./_build