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  1. #include <vcclr.h>
  2. #include <vector>
  3. #include <memory>
  4.  
  5. struct char_pp{
  6. 	static std::auto_ptr<char> cstr(System::String^ s){
  7. 		pin_ptr<const wchar_t> wch = PtrToStringChars(s);
  8. 		size_t convertedChars = 0;
  9. 		size_t sizeInBytes = ((s->Length + 1) * 2);
  10. 		std::auto_ptr<char> ch(new char[sizeInBytes]);
  11. 		errno_t err = wcstombs_s(&convertedChars, ch.get(), sizeInBytes, wch, sizeInBytes);
  12. 		return ch;
  13. 	}
  14. 	std::vector<char*> v;
  15. 	char_pp(array<System::String^>^ s){
  16. 		v.reserve(s->Length);
  17. 		try{
  18. 			for each(System::String^ s in s){ v.push_back(cstr(s).release()); }
  19. 		}
  20. 		catch(...){
  21. 			for(std::vector<char*>::iterator it=v.begin();it!=v.end();it++){ delete *it; }
  22. 			throw;
  23. 		}
  24. 	}
  25. 	~char_pp(){
  26. 		for(std::vector<char*>::iterator it=v.begin();it!=v.end();it++){ delete *it; }
  27. 	}
  28. 	char** get(){return &v[0];}
  29. };
  30.  
  31. void f(char* hogehoge[]){
  32. 	for(char** it=hogehoge;*it!=NULL;it++){
  33. 		printf_s("%s\n", *it);
  34. 	}
  35. }
  36.  
  37. int main(array<System::String^>^ args){
  38. 	cli::array<System::String^> ^hoge = gcnew cli::array<System::String^>{L"a", L"b", L"c"};
  39. 	char_pp p(hoge);
  40. 	p.v.push_back(NULL); //NULL終端配列が必要な場合
  41. 	f(p.get());
  42. 	return 0;
  43. }
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https://ideone.com/xbcbh
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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