comparison: src/string.c
src/string.c
- changeset 645
- ec50abb285ad
- parent 643
- 5700ba9154ab
- child 657
- 3eeadf666d6b
equal
deleted
inserted
replaced
| 644:fcaa0891ef28 | 645:ec50abb285ad |
|---|---|
| 672 cx_strrepl_free_ibuf(firstbuf); | 672 cx_strrepl_free_ibuf(firstbuf); |
| 673 | 673 |
| 674 return result; | 674 return result; |
| 675 } | 675 } |
| 676 | 676 |
| 677 | 677 CxStrtokCtx cx_strtok( |
| 678 cxstring str, | |
| 679 cxstring delim, | |
| 680 size_t limit | |
| 681 ) { | |
| 682 CxStrtokCtx ctx; | |
| 683 ctx.str = str; | |
| 684 ctx.delim = delim; | |
| 685 ctx.limit = limit; | |
| 686 ctx.pos = 0; | |
| 687 ctx.next_pos = 0; | |
| 688 ctx.delim_pos = 0; | |
| 689 ctx.found = 0; | |
| 690 ctx.delim_more = NULL; | |
| 691 ctx.delim_more_count = 0; | |
| 692 return ctx; | |
| 693 } | |
| 694 | |
| 695 CxStrtokCtx cx_strtok_m( | |
| 696 cxmutstr str, | |
| 697 cxstring delim, | |
| 698 size_t limit | |
| 699 ) { | |
| 700 return cx_strtok(cx_strcast(str), delim, limit); | |
| 701 } | |
| 702 | |
| 703 bool cx_strtok_next( | |
| 704 CxStrtokCtx *ctx, | |
| 705 cxstring *token | |
| 706 ) { | |
| 707 // abortion criteria | |
| 708 if (ctx->found >= ctx->limit || ctx->delim_pos >= ctx->str.length) { | |
| 709 return false; | |
| 710 } | |
| 711 | |
| 712 // determine the search start | |
| 713 cxstring haystack = cx_strsubs(ctx->str, ctx->next_pos); | |
| 714 | |
| 715 // search the next delimiter | |
| 716 cxstring delim = cx_strstr(haystack, ctx->delim); | |
| 717 | |
| 718 // if found, make delim capture exactly the delimiter | |
| 719 if (delim.length > 0) { | |
| 720 delim.length = ctx->delim.length; | |
| 721 } | |
| 722 | |
| 723 // if more delimiters are specified, check them now | |
| 724 if (ctx->delim_more_count > 0) { | |
| 725 cx_for_n(i, ctx->delim_more_count) { | |
| 726 cxstring d = cx_strstr(haystack, ctx->delim_more[i]); | |
| 727 if (d.length > 0 && (delim.length == 0 || d.ptr < delim.ptr)) { | |
| 728 delim.ptr = d.ptr; | |
| 729 delim.length = ctx->delim_more[i].length; | |
| 730 } | |
| 731 } | |
| 732 } | |
| 733 | |
| 734 // store the token information and adjust the context | |
| 735 ctx->found++; | |
| 736 ctx->pos = ctx->next_pos; | |
| 737 token->ptr = &ctx->str.ptr[ctx->pos]; | |
| 738 ctx->delim_pos = delim.length == 0 ? | |
| 739 ctx->str.length : (size_t) (delim.ptr - ctx->str.ptr); | |
| 740 token->length = ctx->delim_pos - ctx->pos; | |
| 741 ctx->next_pos = ctx->delim_pos + delim.length; | |
| 742 | |
| 743 return true; | |
| 744 } | |
| 745 | |
| 746 bool cx_strtok_next_m( | |
| 747 CxStrtokCtx *ctx, | |
| 748 cxmutstr *token | |
| 749 ) { | |
| 750 return cx_strtok_next(ctx, (cxstring *) token); | |
| 751 } | |
| 752 | |
| 753 void cx_strtok_delim( | |
| 754 CxStrtokCtx *ctx, | |
| 755 cxstring const *delim, | |
| 756 size_t count | |
| 757 ) { | |
| 758 ctx->delim_more = delim; | |
| 759 ctx->delim_more_count = count; | |
| 760 } |
