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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4.  
  5. std::istream& get_word_or_quote( std::istream& is, std::string& s )
  6. {
  7.   char c;
  8.  
  9.   // skip ws and get the first character
  10.   if ( !std::ws( is ) || !is.get( c ) )
  11.     return is;
  12.  
  13.   // if it is a word
  14.   if ( c != '"' )
  15.   {
  16.     is.putback( c );
  17.     return is >> s;
  18.   }
  19.  
  20.   // if it is a quote (no escape sequence)
  21.   std::string q;
  22.   while ( is.get( c ) && c != '"' )
  23.     q += c;
  24.   if ( c != '"' )
  25.     throw "closing quote expected";
  26.  
  27.   //
  28.   s = std::move( q );
  29.   return is;
  30. }
  31.  
  32. int main()
  33. {
  34.   std::istringstream is {"not-quoted \"quoted\" \"quoted with spaces\" \"no closing quote!" };
  35.  
  36.   try
  37.   {
  38.     std::string word;
  39.     while ( get_word_or_quote( is, word ) )
  40.       std::cout << word << std::endl;
  41.   }
  42.   catch ( const char* e )
  43.   {
  44.     std::cout << "ERROR: " << e;
  45.   }
  46.  
  47.   return 0;
  48. }
Success #stdin #stdout 0s 16056KB
comments (?)
stdin
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Standard input is empty
stdout
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not-quoted
quoted
quoted with spaces
ERROR: closing quote expected
https://ideone.com/jXEwba
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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