Mercurial > hg > th-libs
comparison th_string.c @ 696:9bbacd72df3d
Allow src and dst to "overlap" for th_pstr_cpy().
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 09 Mar 2020 19:13:52 +0200 |
| parents | 953e16582f25 |
| children | d687bbb54c1a |
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| 695:a04b8fe158b9 | 696:9bbacd72df3d |
|---|---|
| 526 /* Copy a given string over in *pdst. | 526 /* Copy a given string over in *pdst. |
| 527 */ | 527 */ |
| 528 int th_pstr_cpy(th_char_t **pdst, const th_char_t *src) | 528 int th_pstr_cpy(th_char_t **pdst, const th_char_t *src) |
| 529 { | 529 { |
| 530 size_t slen; | 530 size_t slen; |
| 531 th_char_t *tmp; | |
| 531 | 532 |
| 532 if (pdst == NULL || src == NULL) | 533 if (pdst == NULL || src == NULL) |
| 533 return THERR_NULLPTR; | 534 return THERR_NULLPTR; |
| 534 | 535 |
| 536 slen = th_strlen(src); | |
| 537 if ((tmp = th_malloc((slen + 1) * sizeof(th_char_t))) == NULL) | |
| 538 return THERR_MALLOC; | |
| 539 | |
| 540 memcpy(tmp, src, (slen + 1) * sizeof(th_char_t)); | |
| 541 | |
| 535 th_free(*pdst); | 542 th_free(*pdst); |
| 536 | 543 *pdst = tmp; |
| 537 slen = th_strlen(src); | |
| 538 if ((*pdst = th_malloc((slen + 1) * sizeof(th_char_t))) == NULL) | |
| 539 return THERR_MALLOC; | |
| 540 | |
| 541 memcpy(*pdst, src, (slen + 1) * sizeof(th_char_t)); | |
| 542 | 544 |
| 543 return THERR_OK; | 545 return THERR_OK; |
| 544 } | 546 } |
| 545 | 547 |
| 546 | 548 |