comparison: src/util.c
src/util.c
- changeset 4853
- 5b5ed316fe65
- parent 4834
- 80bc171a5236
- child 4888
- 09f16a932490
equal
deleted
inserted
replaced
| 4852:0b591ca2a395 | 4853:5b5ed316fe65 |
|---|---|
| 464 *data = out; | 464 *data = out; |
| 465 if (size) | 465 if (size) |
| 466 *size = len; | 466 *size = len; |
| 467 } | 467 } |
| 468 | 468 |
| 469 /* | |
| 470 * Converts raw data to a pretty, null-terminated base16 string. | |
| 471 */ | |
| 472 char *tobase16(const char *data, int length) | |
| 473 { | |
| 474 int i; | |
| 475 char *ascii = NULL; | |
| 476 | |
| 477 if (!data || !length) | |
| 478 return NULL; | |
| 479 | |
| 480 ascii = (char *)malloc(length*2 + 1); | |
| 481 | |
| 482 for (i=0; i<length; i++) | |
| 483 snprintf(&ascii[i*2], 3, "%02hhx", data[i]); | |
| 484 | |
| 485 return ascii; | |
| 486 } | |
| 487 | |
| 488 /* | |
| 489 * Converts a null-terminated string of hexidecimal to raw data. | |
| 490 */ | |
| 491 int frombase16(const char *ascii, char **raw) | |
| 492 { | |
| 493 int len, i, accumulator; | |
| 494 char *data; | |
| 495 | |
| 496 if (!ascii || !(len = strlen(ascii)) || (len % 2)) | |
| 497 return 0; | |
| 498 | |
| 499 data = (char *)malloc((len/2)*sizeof(char)); | |
| 500 for (i=0; i<len; i++) { | |
| 501 if (!(i % 2)) | |
| 502 accumulator = 0; | |
| 503 else | |
| 504 accumulator = accumulator << 4; | |
| 505 if (isdigit(ascii[i])) | |
| 506 accumulator |= ascii[i]-48; | |
| 507 else switch(ascii[i]) { | |
| 508 case 'a': case 'A': accumulator|=10; break; | |
| 509 case 'b': case 'B': accumulator|=11; break; | |
| 510 case 'c': case 'C': accumulator|=12; break; | |
| 511 case 'd': case 'D': accumulator|=13; break; | |
| 512 case 'e': case 'E': accumulator|=14; break; | |
| 513 case 'f': case 'F': accumulator|=15; break; | |
| 514 } | |
| 515 if (i % 2) | |
| 516 data[(i-1)/2] = accumulator; | |
| 517 } | |
| 518 | |
| 519 *raw = data; | |
| 520 return len/2; | |
| 521 } | |
| 469 | 522 |
| 470 char *normalize(const char *s) | 523 char *normalize(const char *s) |
| 471 { | 524 { |
| 472 static char buf[BUF_LEN]; | 525 static char buf[BUF_LEN]; |
| 473 char *tmp; | 526 char *tmp; |
