| 145 | const butil::EndPoint *Path::LOCAL = (butil::EndPoint *)0x01; |
| 146 | |
| 147 | void AppendFileName(std::string* dir, const std::string& filename) { |
| 148 | if (dir->empty()) { |
| 149 | dir->append(filename); |
| 150 | return; |
| 151 | } |
| 152 | const size_t len = filename.size(); |
| 153 | if (len >= 3) { |
| 154 | if (butil::back_char(*dir) != '/') { |
| 155 | dir->push_back('/'); |
| 156 | } |
| 157 | dir->append(filename); |
| 158 | } else if (len == 1) { |
| 159 | if (filename[0] != '.') { |
| 160 | if (butil::back_char(*dir) != '/') { |
| 161 | dir->push_back('/'); |
| 162 | } |
| 163 | dir->append(filename); |
| 164 | } |
| 165 | } else if (len == 2) { |
| 166 | if (filename[0] != '.' || filename[1] != '.') { |
| 167 | if (butil::back_char(*dir) != '/') { |
| 168 | dir->push_back('/'); |
| 169 | } |
| 170 | dir->append(filename); |
| 171 | } else { |
| 172 | const bool is_abs = (dir->c_str()[0] == '/'); |
| 173 | int npop = 1; |
| 174 | while (npop > 0) { |
| 175 | const char* p = dir->c_str() + dir->size() - 1; |
| 176 | for (; p != dir->c_str() && *p == '/'; --p); |
| 177 | if (p == dir->c_str()) { |
| 178 | dir->clear(); |
| 179 | break; |
| 180 | } |
| 181 | dir->resize(p - dir->c_str() + 1); |
| 182 | |
| 183 | size_t slash_pos = dir->find_last_of('/'); |
| 184 | if (slash_pos == std::string::npos) { |
| 185 | --npop; |
| 186 | dir->clear(); |
| 187 | break; |
| 188 | } |
| 189 | if (strcmp(dir->data() + slash_pos + 1, ".") != 0) { |
| 190 | if (strcmp(dir->data() + slash_pos + 1, "..") == 0) { |
| 191 | ++npop; |
| 192 | } else { |
| 193 | --npop; |
| 194 | } |
| 195 | } |
| 196 | ssize_t new_pos = (ssize_t)slash_pos - 1; |
| 197 | for (; new_pos >= 0 && (*dir)[new_pos] == '/'; --new_pos); |
| 198 | dir->resize(new_pos + 1); |
| 199 | if (dir->empty()) { |
| 200 | break; |
| 201 | } |
| 202 | } |
| 203 | if (dir->empty()) { |
| 204 | if (is_abs) { |