| 43 | } |
| 44 | |
| 45 | bool encode_name(const std::string& content, std::string& encoded_content) { |
| 46 | int index = 0; |
| 47 | size_t begin = 0; |
| 48 | bool convert = false; |
| 49 | for (std::string::const_iterator it = content.begin(); it != content.end(); ++it, ++index) { |
| 50 | if ((!isalnum(*it) && |
| 51 | (*it != '_')) || |
| 52 | (it == content.begin() && |
| 53 | isdigit(*it))) { |
| 54 | if (!convert) { |
| 55 | encoded_content.clear(); |
| 56 | encoded_content.reserve(2*content.size()); |
| 57 | convert = true; |
| 58 | } |
| 59 | encoded_content.append(content, begin, index - begin); |
| 60 | begin = index + 1; |
| 61 | |
| 62 | char pattern[6]; |
| 63 | pattern[0] = '_'; |
| 64 | pattern[1] = 'Z'; |
| 65 | int first = *it / 100; |
| 66 | int second = (*it - first * 100) / 10; |
| 67 | int third = *it - first * 100 - second * 10; |
| 68 | pattern[2] = first + '0'; |
| 69 | pattern[3] = second + '0'; |
| 70 | pattern[4] = third + '0'; |
| 71 | pattern[5] = '_'; |
| 72 | encoded_content.append(pattern, sizeof(pattern)); |
| 73 | } |
| 74 | } |
| 75 | if (!convert) { |
| 76 | return false; |
| 77 | } else { |
| 78 | encoded_content.append(content, begin, index - begin); |
| 79 | return true; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | bool decode_name(const std::string& content, std::string& decoded_content) { |
| 84 | const int pattern_length = 6; |