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  1. #include <iostream>
  2. #include <map>
  3. #include <string>
  4.  
  5. struct PlayerClass
  6. {
  7.     std::string const name;
  8.  
  9.     unsigned Str, Dex, Int;
  10.  
  11.     PlayerClass( std::string const& name ):
  12.         name{name} {}
  13.  
  14.     PlayerClass& operator=(PlayerClass const&) = delete; // Keine Zuweisung (geht sowieso nicht)
  15. };
  16.  
  17. #include <vector>
  18. #include <algorithm>
  19. #include <functional>
  20. #include <stdexcept>
  21.  
  22. std::istream& operator>>( std::istream& is, PlayerClass& plcl )
  23. {
  24.     static std::vector<std::ctype_base::mask> equals_mask;
  25.     if( equals_mask.empty() )
  26.     {
  27.         equals_mask.assign( std::ctype<char>::classic_table(), std::ctype<char>::classic_table() + std::ctype<char>::table_size);
  28.         equals_mask['='] |= std::ctype_base::space;
  29.     }
  30.  
  31.     auto old_loc = is.imbue( std::locale{is.getloc(), new std::ctype<char>{equals_mask.data()} } );
  32.  
  33.     std::string attr_str;
  34.     unsigned attr_val;
  35.     while( is >> attr_str >> attr_val )
  36.     {
  37.         std::transform( std::begin(attr_str), std::end(attr_str), std::begin(attr_str), std::bind( std::tolower<char>, std::placeholders::_1, old_loc ) ); /// Den String komplett ohne Großbuchstaben machen
  38.  
  39.              if( attr_str == "str" ) plcl.Str = attr_val;
  40.         else if( attr_str == "dex" ) plcl.Dex = attr_val;
  41.         else if( attr_str == "int" ) plcl.Int = attr_val;
  42.         else
  43.             throw std::logic_error("Invalid attribute while parsing PlayerClass!");
  44.     }
  45.  
  46.     is.imbue( old_loc );
  47.  
  48.     return is;
  49. }
  50.  
  51. #include <sstream>
  52.  
  53. int main()
  54. {
  55.     std::istringstream stream("Str=12 \n Dex=17 \n Int=4");
  56.     PlayerClass test("Schurke");
  57.     stream >> test;
  58.  
  59.     std::cout << "Str: " << test.Str << " Dex: " << test.Dex << " Int: " << test.Int;
  60. }
  61.  
  62.  
Success #stdin #stdout 0s 3032KB
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stdin
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Standard input is empty
stdout
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Str: 12 Dex: 17 Int: 4
https://ideone.com/x4cokc
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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