Save a string object as [len][data] on disk. If the object is a string * representation of an integer value we try to save it in a special form */
| 430 | /* Save a string object as [len][data] on disk. If the object is a string |
| 431 | * representation of an integer value we try to save it in a special form */ |
| 432 | ssize_t rdbSaveRawString(rio *rdb, unsigned char *s, size_t len) { |
| 433 | int enclen; |
| 434 | ssize_t n, nwritten = 0; |
| 435 | |
| 436 | /* Try integer encoding */ |
| 437 | if (len <= 11) { |
| 438 | unsigned char buf[5]; |
| 439 | if ((enclen = rdbTryIntegerEncoding((char*)s,len,buf)) > 0) { |
| 440 | if (rdbWriteRaw(rdb,buf,enclen) == -1) return -1; |
| 441 | return enclen; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | /* Try LZF compression - under 20 bytes it's unable to compress even |
| 446 | * aaaaaaaaaaaaaaaaaa so skip it */ |
| 447 | if (server.rdb_compression && len > 20) { |
| 448 | n = rdbSaveLzfStringObject(rdb,s,len); |
| 449 | if (n == -1) return -1; |
| 450 | if (n > 0) return n; |
| 451 | /* Return value of 0 means data can't be compressed, save the old way */ |
| 452 | } |
| 453 | |
| 454 | /* Store verbatim */ |
| 455 | if ((n = rdbSaveLen(rdb,len)) == -1) return -1; |
| 456 | nwritten += n; |
| 457 | if (len > 0) { |
| 458 | if (rdbWriteRaw(rdb,s,len) == -1) return -1; |
| 459 | nwritten += len; |
| 460 | } |
| 461 | return nwritten; |
| 462 | } |
| 463 | |
| 464 | /* Save a long long value as either an encoded string or a string. */ |
| 465 | ssize_t rdbSaveLongLongAsStringObject(rio *rdb, long long value) { |
no test coverage detected