projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f A |
1 | /* |
| 2 | * @(#)Features.cpp 1.4 00/03/15 | |
| 3 | * | |
| 4 | * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #include "LETypes.h" | |
| 9 | #include "OpenTypeUtilities.h" | |
| 10 | #include "OpenTypeTables.h" | |
| 11 | #include "Features.h" | |
| 12 | #include "LESwaps.h" | |
| 13 | ||
| 14 | U_NAMESPACE_BEGIN | |
| 15 | ||
| 16 | const FeatureTable *FeatureListTable::getFeatureTable(le_uint16 featureIndex, LETag *featureTag) const | |
| 17 | { | |
| 18 | if (featureIndex >= SWAPW(featureCount)) { | |
| 19 | return 0; | |
| 20 | } | |
| 21 | ||
| 22 | Offset featureTableOffset = featureRecordArray[featureIndex].featureTableOffset; | |
| 23 | ||
| 24 | *featureTag = SWAPT(featureRecordArray[featureIndex].featureTag); | |
| 25 | ||
| 26 | return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset)); | |
| 27 | } | |
| 28 | ||
| 29 | /* | |
| 30 | * Note: according to the OpenType Spec. v 1.4, the entries in the Feature | |
| 31 | * List Table are sorted alphabetically by feature tag; however, there seem | |
| 32 | * to be some fonts which have an unsorted list; that's why the binary search | |
| 33 | * is #if 0'd out and replaced by a linear search. | |
| 34 | * | |
| 35 | * Also note: as of ICU 2.6, this method isn't called anyhow... | |
| 36 | */ | |
| 37 | const FeatureTable *FeatureListTable::getFeatureTable(LETag featureTag) const | |
| 38 | { | |
| 39 | #if 0 | |
| 40 | Offset featureTableOffset = | |
| 41 | OpenTypeUtilities::getTagOffset(featureTag, (TagAndOffsetRecord *) featureRecordArray, SWAPW(featureCount)); | |
| 42 | ||
| 43 | if (featureTableOffset == 0) { | |
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset)); | |
| 48 | #else | |
| 49 | int count = SWAPW(featureCount); | |
| 50 | ||
| 51 | for (int i = 0; i < count; i += 1) { | |
| 52 | if (SWAPT(featureRecordArray[i].featureTag) == featureTag) { | |
| 53 | return (const FeatureTable *) ((char *) this + SWAPW(featureRecordArray[i].featureTableOffset)); | |
| 54 | } | |
| 55 | } | |
| 56 | ||
| 57 | return 0; | |
| 58 | #endif | |
| 59 | } | |
| 60 | ||
| 61 | U_NAMESPACE_END |