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  1. #include <iostream>
  2. #include <string>
  3. #include <iostream>
  4. #include <boost/algorithm/string/replace.hpp>
  5.  
  6. std::string escape(const std::string& s)
  7. {
  8.     auto result = boost::replace_all_copy(s, "\\", "\\\\"); // replace \ with \\
  9.     boost::replace_all(result, "\"", "\\\""); // replace " with \"
  10.     return result;
  11. }
  12.  
  13. int main()
  14. {
  15.     struct {
  16.         std::string s;
  17.         std::string expected;
  18.     } data[] {
  19.         { "", ""},
  20.         { "abcd", "abcd"},
  21.         { R"(foo\bar)", R"(foo\\bar)"},
  22.         { R"("foo")", R"(\"foo\")"},
  23.     };
  24.     for(const auto& d : data) {
  25.         std::cout << "Test: " << d.s << '\n';
  26.         auto result = escape(d.s);
  27.         if (result != d.expected) {
  28.             std::cout << "FAILLED!!!\n";
  29.             std::cout << "expected: " << d.expected << '\n';
  30.             std::cout << "  actual: " << result     << "\n\n";
  31.         } else {
  32.             std::cout << "pass\n\n";
  33.         }
  34.     }
  35. }
  36.  
Success #stdin #stdout 0.01s 5364KB
comments (?)
stdin
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Standard input is empty
stdout
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Test: 
pass

Test: abcd
pass

Test: foo\bar
pass

Test: "foo"
FAILLED!!!
expected: \"foo\"
  actual: "foo"
https://ideone.com/byX05g
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
secret

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