Overview
| Comment: | Implement -[OFString_UTF8 hash] for better performance. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
855de7c3a7097d1ddc72e620227cd5c0 |
| User & Date: | js on 2011-11-21 16:47:57 |
| Other Links: | manifest | tags |
Context
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2011-11-23
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| 00:21 | Add an implementation of strptime. check-in: bfdf9135d3 user: js tags: trunk | |
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2011-11-21
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| 16:47 | Implement -[OFString_UTF8 hash] for better performance. check-in: 855de7c3a7 user: js tags: trunk | |
| 16:47 | There is no need to hash 32 bit per character if Unicode has only 24. check-in: d8a6ca3fbd user: js tags: trunk | |
Changes
Modified src/OFString_UTF8.m from [3609f3a164] to [a98ac09f1e].
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711 712 713 714 715 716 717 | return OF_ORDERED_DESCENDING; else if (s->cStringLength - i < otherCStringLength - j) return OF_ORDERED_ASCENDING; return OF_ORDERED_SAME; } | < > > | > | > > > | > > > > > > > > > > > > > > > > | 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 |
return OF_ORDERED_DESCENDING;
else if (s->cStringLength - i < otherCStringLength - j)
return OF_ORDERED_ASCENDING;
return OF_ORDERED_SAME;
}
- (uint32_t)hash
{
size_t i;
uint32_t hash;
OF_HASH_INIT(hash);
for (i = 0; i < s->cStringLength; i++) {
of_unichar_t c;
size_t length;
if ((length = of_string_utf8_to_unicode(s->cString + i,
s->cStringLength - i, &c)) == 0)
@throw [OFInvalidEncodingException
exceptionWithClass: isa];
OF_HASH_ADD(hash, (c & 0xFF0000) >> 16);
OF_HASH_ADD(hash, (c & 0x00FF00) >> 8);
OF_HASH_ADD(hash, c & 0x0000FF);
i += length - 1;
}
OF_HASH_FINALIZE(hash);
return hash;
}
- (of_unichar_t)characterAtIndex: (size_t)index
{
of_unichar_t character;
if (index >= s->length)
@throw [OFOutOfRangeException exceptionWithClass: isa];
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