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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. #include <utility>
  5. using namespace std;
  6.  
  7. string string_replace( const string & s, const string & findS, const std::string & replaceS )
  8. {
  9. 	string result = s;
  10. 	auto pos = s.find( findS );
  11. 	if ( pos == string::npos ) {
  12. 		return result;
  13. 	}
  14. 	result.replace( pos, findS.length(), replaceS );
  15. 	return string_replace( result, findS, replaceS );
  16. }
  17.  
  18. string parse(const string& s) {
  19.     static vector< pair< string, string > > patterns = {
  20.         { "\\\\" , "\\" },
  21.     	{ "\\n", "\n" },
  22.     	{ "\\r", "\r" },
  23.     	{ "\\t", "\t" },
  24.     	{ "\\\"", "\"" }
  25.     };
  26.     string result = s;
  27.     for ( const auto & p : patterns ) {
  28.     	result = string_replace( result, p.first, p.second );
  29.     }
  30.     return result;
  31. }
  32.  
  33. int main() {
  34.     string s1 = R"(hello\n\"this is a string with escape sequences\"\n)";
  35.     string s2 = "hello\n\"this is a string with escape sequences\"\n";
  36.     cout << parse(s1) << endl;
  37.     cout << ( parse(s1) == s2 ) << endl;
  38. }
Success #stdin #stdout 0s 3232KB
comments (?)
stdin
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Standard input is empty
stdout
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hello
"this is a string with escape sequences"

1
https://ideone.com/jMAfRK
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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