| 284 | } |
| 285 | |
| 286 | std::string data_serializer::base64_encode(unsigned char const *bytes_to_encode, unsigned int in_len) |
| 287 | { |
| 288 | static const std::string base64_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
| 289 | |
| 290 | std::stringstream ss; |
| 291 | int i = 0, j = 0; |
| 292 | unsigned char char_array_3[3]; |
| 293 | unsigned char char_array_4[4]; |
| 294 | |
| 295 | while (in_len--) |
| 296 | { |
| 297 | char_array_3[i++] = *(bytes_to_encode++); |
| 298 | if (i == 3) |
| 299 | { |
| 300 | char_array_4[0] = (char_array_3[0] & 0xfc) >> 2; |
| 301 | char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4); |
| 302 | char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6); |
| 303 | char_array_4[3] = char_array_3[2] & 0x3f; |
| 304 | for (i = 0; (i < 4); i++) |
| 305 | ss << base64_chars[char_array_4[i]]; |
| 306 | i = 0; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | if (i > 0) |
| 311 | { |
| 312 | for (j = i; j < 3; j++) |
| 313 | char_array_3[j] = '\0'; |
| 314 | char_array_4[0] = (char_array_3[0] & 0xfc) >> 2; |
| 315 | char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4); |
| 316 | char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6); |
| 317 | for (j = 0; (j < i + 1); j++) |
| 318 | ss << base64_chars[char_array_4[j]]; |
| 319 | while ((i++ < 3)) |
| 320 | ss << '='; |
| 321 | } |
| 322 | return ss.str(); |
| 323 | } |
| 324 | |
| 325 | } // namespace socket_publisher |