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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. // Ref: http://w...content-available-to-author-only...s.com/reference/iterator/istreambuf_iterator/
  6. // Ref: http://w...content-available-to-author-only...s.com/reference/istream/istream/sentry/
  7. // Ref: http://w...content-available-to-author-only...s.com/reference/istream/istream/
  8.  
  9. istream& getline(istream& is, vector<char> &buffer)
  10. {
  11. 	std::istream::sentry s(is);
  12. 	if (s)
  13. 	{
  14. 		std::istreambuf_iterator<char> it(is);
  15. 		std::istreambuf_iterator<char> end;
  16.  
  17. 		const size_t grow = 64;
  18. 		buffer.reserve(grow);
  19.  
  20. 		while (it != end && *it != '\n') 
  21. 		{
  22. 			if (buffer.size() == buffer.capacity() - 1) 
  23. 			{
  24. 				buffer.reserve(buffer.size() + grow);
  25. 			}
  26.  
  27. 			buffer.push_back(*it++);
  28. 		}
  29. 		buffer.push_back('\0');
  30. 	}
  31.  
  32. 	return is;
  33. }
  34.  
  35. int main() 
  36. {
  37. 	vector<char> line;
  38. 	while (getline(std::cin, line))
  39. 	{
  40. 		if (!line.empty()) 
  41. 		{
  42. 			cout << line.data() << endl;
  43. 			line.clear();
  44. 		}
  45. 	}
  46.  
  47. 	return 0;
  48. }
  49.  
Success #stdin #stdout 0s 3464KB
comments (?)
stdin
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line1 line 1 line1 line 1 1 1 1 111
line 2    line 2 222 2 2 222 
line 3 3 3 33 3
line 4 4 4 44444 4
stdout
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line1 line 1 line1 line 1 1 1 1 111
line 2    line 2 222 2 2 222 
line 3 3 3 33 3
line 4 4 4 44444 4
https://ideone.com/CxNfg4
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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