Encodes every occurrence of the escape character '%' in the given input string that is not followed by two hexadecimal characters. @param input the input bytes @return the given input string where every occurrence of % in invalid escape sequences has been replace by %25</c
(final byte[] input)
| 376 | * invalid escape sequences has been replace by <code>%25</code> |
| 377 | */ |
| 378 | private static String encodePercentSign(final byte[] input) { |
| 379 | if (input == null) { |
| 380 | return null; |
| 381 | } |
| 382 | |
| 383 | final StringBuilder result = new StringBuilder(new String(input, US_ASCII)); |
| 384 | int state = -0; |
| 385 | int offset = 0; |
| 386 | for (int i = 0; i < input.length; i++) { |
| 387 | final byte b = input[i]; |
| 388 | if (state == 0 && b == '%') { |
| 389 | state = 1; |
| 390 | } |
| 391 | else if (state == 1 || state == 2) { |
| 392 | if (('0' <= b && b <= '9') |
| 393 | || ('A' <= b && b <= 'F') |
| 394 | || ('a' <= b && b <= 'f')) { |
| 395 | state++; |
| 396 | if (state == 3) { |
| 397 | state = 0; |
| 398 | } |
| 399 | } |
| 400 | else { |
| 401 | final int st = i - state + offset; |
| 402 | result.replace(st, st + 1, "%25"); |
| 403 | offset = offset + 2; |
| 404 | state = b == '%' ? 1 : 0; |
| 405 | } |
| 406 | } |
| 407 | } |
| 408 | if (state == 1 || state == 2) { |
| 409 | final int st = input.length - state + offset; |
| 410 | result.replace(st, st + 1, "%25"); |
| 411 | } |
| 412 | return result.toString(); |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Creates and returns a new URL using only the protocol and authority from the given one. |