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  1. #include <iostream>
  2. #include <sstream>
  3. #include <vector>
  4. #include <string>
  5.  
  6. const static char _delims[] = { '\\', '"' };
  7. const static std::vector<char> delims(_delims, _delims + 2);
  8.  
  9. class EscapeStr {
  10. 	const static unsigned short MAX_CHAR = 256;
  11.  
  12. 	std::string &_elem;
  13. 	bool _delim[MAX_CHAR];
  14. 	const char* _escape;
  15. 	int _escLen;
  16. public:
  17. 	EscapeStr(std::string &elem,
  18. 		const std::vector<char> &delim = std::vector<char>(1, '"'),
  19. 		const std::string &escape = "\\") :
  20. 		_elem(elem),
  21. 		_escape(escape.c_str()),
  22. 		_escLen(escape.size())
  23. 	{
  24. 		for (int i = 0; i < MAX_CHAR; i++) {
  25. 			_delim[i] = false;
  26. 		}
  27. 		for (std::size_t i = 0; i < delim.size(); i++) {
  28. 			_delim[delim[i]] = true;
  29. 		}
  30. 	}
  31. 	void print(std::ostream& os) const {
  32. 		for (std::size_t i = 0; i < _elem.length(); i++) {
  33. 			char c = _elem[i];
  34. 			if (_delim[c]) {
  35. 				for (int j = 0; j < _escLen; j++) {
  36. 					os << _escape[j];
  37. 				}
  38. 			}
  39. 			os << _elem[i];
  40. 		}
  41. 	}
  42. };
  43.  
  44. std::ostream& operator <<(std::ostream& os, const EscapeStr& t)
  45. {
  46. 	t.print(os);
  47. 	return os;
  48. }
  49.  
  50.  
  51. int main()
  52. {
  53. 	std::ostream os(NULL);
  54. 	std::string s = "Hi there \"This should be escaped\"";
  55. 	EscapeStr es(s);
  56. 	os << es;
  57. 	std::stringstream oss;
  58. 	oss << os.rdbuf();
  59. 	std::cout << oss.str();
  60. 	std::cout << "Do you see this?";
  61. }
Success #stdin #stdout 0s 3416KB
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Do you see this?
https://ideone.com/jxro5s
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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