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  1. #include <cstddef>
  2. #include <algorithm>
  3. #include <iostream>
  4. #include <iterator>
  5. #include <string>
  6.  
  7. void sanitize(std::string &stringValue)
  8. {
  9.     // Add backslashes.
  10.     for (auto i = stringValue.begin();;) {
  11.         auto const pos = std::find_if(
  12.             i, stringValue.end(),
  13.             [](char const c) { return '\\' == c || '\'' == c || '"' == c; }
  14.         );
  15.         if (pos == stringValue.end()) {
  16.             break;
  17.         }
  18.         i = std::next(stringValue.insert(pos, '\\'), 2);
  19.     }
  20.  
  21.     // Removes others.
  22.     stringValue.erase(
  23.         std::remove_if(
  24.             stringValue.begin(), stringValue.end(), [](char const c) {
  25.                 return '\n' == c || '\r' == c || '\0' == c || '\x1A' == c;
  26.             }
  27.         ),
  28.         stringValue.end()
  29.     );
  30. }
  31.  
  32. int main()
  33. {
  34. 	std::string s = "hello\" \"wo'rld\\ this is\na test";
  35. 	std::cout << s << "\n---\n";
  36. 	sanitize(s);
  37. 	std::cout << s << "\n---\n";
  38. }
  39.  
Success #stdin #stdout 0s 3416KB
comments (?)
stdin
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Standard input is empty
stdout
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hello" "wo'rld\ this is
a test
---
hello\" \"wo\'rld\\ this isa test
---
https://ideone.com/l5f1nZ
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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