Does not handle "raw" form (e.g. #28C4D1), only escaped text
| 44 | |
| 45 | // Does not handle "raw" form (e.g. #28C4D1), only escaped text |
| 46 | static std::string de4514(std::string const& input, int start, int& out_end) { |
| 47 | std::string output; |
| 48 | |
| 49 | if (input[start] == '#' || input[start] == ' ') { |
| 50 | out_end = start; |
| 51 | return output; |
| 52 | } |
| 53 | |
| 54 | int space_count = 0; |
| 55 | |
| 56 | for (int p = start; p < input.size();) { |
| 57 | switch (input[p]) { |
| 58 | case '\\': // Handle escaped sequence |
| 59 | |
| 60 | // Backslash escaping nothing! |
| 61 | if (p == input.size() - 1) { |
| 62 | out_end = p; |
| 63 | goto FIN; |
| 64 | } |
| 65 | |
| 66 | switch (input[p + 1]) { |
| 67 | case ' ': |
| 68 | case '"': |
| 69 | case '#': |
| 70 | case '+': |
| 71 | case ',': |
| 72 | case ';': |
| 73 | case '<': |
| 74 | case '=': |
| 75 | case '>': |
| 76 | case '|': |
| 77 | case '\\': |
| 78 | output += input[p + 1]; |
| 79 | p += 2; |
| 80 | space_count = 0; |
| 81 | continue; |
| 82 | |
| 83 | default: |
| 84 | // Backslash escaping pair of hex digits requires two characters |
| 85 | if (p == input.size() - 2) { |
| 86 | out_end = p; |
| 87 | goto FIN; |
| 88 | } |
| 89 | |
| 90 | try { |
| 91 | output += hexValue(input[p + 1]) * 16 + hexValue(input[p + 2]); |
| 92 | p += 3; |
| 93 | space_count = 0; |
| 94 | continue; |
| 95 | } catch (...) { |
| 96 | out_end = p; |
| 97 | goto FIN; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | case '"': |
| 102 | case '+': |
| 103 | case ',': |
no test coverage detected