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  1. #include <string>
  2. #include <algorithm>
  3. #include <iterator>
  4. #include <sstream>
  5. #include <vector>
  6. #include <iostream>
  7. using namespace std;
  8.  
  9. struct endl_whitespace : std::ctype<char> {
  10.     static const mask* make_table()
  11.     {
  12.         static std::vector<mask> v(table_size, mask()); // blank classification table
  13.         v['\n'] = space;  // endl will be classified as whitespace
  14.         return &v[0];
  15.     }
  16.     endl_whitespace(std::size_t refs = 0) : ctype<char>(make_table(), false, refs) {}
  17. };
  18. string stringCleaner(const string &str)
  19. {
  20.     istringstream tempStr(str);
  21.     tempStr.imbue(locale(tempStr.getloc(), new endl_whitespace));
  22.     ostringstream cleanLine;
  23.     unique_copy(istream_iterator<string>(tempStr),
  24.                 istream_iterator<string>(),
  25.                 ostream_iterator<string>(cleanLine, "\n"));
  26.     return cleanLine.str();
  27. }
  28.  
  29. int main()
  30. {
  31.     std::cout << stringCleaner("http://www aaa com\nhttp://www bbb com\n"
  32.                                "http://www bbb com\nhttp://www ccc com\n"
  33.                                "http://www ddd com\nhttp://www ddd com\n"
  34.                                "http://www ddd com\nhttp://www ddd com\n"
  35.                                "http://www eee com");
  36. }
  37.  
Success #stdin #stdout 0.02s 2868KB
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Standard input is empty
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http://www aaa com
http://www bbb com
http://www ccc com
http://www ddd com
http://www eee com
https://ideone.com/LOYO3
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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