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  1. #include <iostream>
  2. #include <string>
  3. #include <cctype>
  4. #include <vector>
  5.  
  6. typedef std::vector<std::string> DType;
  7.  
  8. DType MakeVector() {
  9. 	return { "snake_case","ODAI00_99_TEST","x_0_x","UpperCamelCase" };
  10. }
  11. int SelectChar(int Ch) {
  12. 	if (std::isdigit(Ch)) {
  13. 		return 1;//number
  14. 	}
  15. 	if (std::isalpha(Ch)) {//alphabet
  16. 		return 2;//upper
  17. 	}
  18.  
  19. 	return 0;//graph
  20. }
  21. DType Split(const std::string& D){
  22. 	std::string S;
  23. 	DType R;
  24. 	int St = SelectChar(D.front());
  25. 	bool F = true;
  26. 	for(std::size_t i=0;i<D.size();i++){
  27. 		int V = SelectChar(D[i]);
  28. 		if (St == V) {
  29. 			if (F) {
  30. 				S += std::toupper(D[i]);
  31. 				F = false;
  32. 			}
  33. 			else {
  34. 				S += std::tolower(D[i]);	
  35.  
  36. 			}
  37. 		}
  38. 		else {
  39. 			St = V;
  40. 			R.push_back(S);
  41. 			S.clear();
  42. 			i--;
  43. 			F = true;
  44. 		}
  45. 	}
  46. 	if (S.size()) R.push_back(S);
  47. 	return R;
  48. }
  49.  
  50. std::string MakeHoge(const std::string& S) {
  51. 	DType D = Split(S);
  52. 	std::string R;
  53.  
  54. 	for (std::size_t i = 0; i < D.size(); i++) {
  55. 		if (D[i][0] == '_') {
  56. 			if (static_cast<long long int>(i) - 1 >= 0) {
  57. 				if (!std::isdigit(D[i - 1].back())) { continue; }
  58. 				if (static_cast<long long int>(i) + 1 < D.size() && std::isdigit(D[i + 1].front())) { R += '_'; }	
  59. 			}
  60. 			continue;
  61. 		}	
  62. 		R += D[i];
  63. 	}
  64. 	return R;
  65. }
  66. int main() {
  67. 	DType D = MakeVector();
  68.  
  69. 	for (auto& o : D) {
  70. 		auto R = MakeHoge(o);
  71. 		std::cout << o << " => " << R << std::endl;
  72. 	}
  73.  
  74. 	return 0;
  75. }
Success #stdin #stdout 0s 4404KB
comments (?)
stdin
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Standard input is empty
stdout
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snake_case => SnakeCase
ODAI00_99_TEST => Odai00_99Test
x_0_x => X0X
UpperCamelCase => Uppercamelcase
https://ideone.com/6apRE9
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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