| | 1 | /* |
| | 2 | * @(#)Features.cpp 1.4 00/03/15 |
| | 3 | * |
| | 4 | * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved |
| | 5 | * |
| | 6 | */ |
| | 7 | |
| | 8 | #include "LETypes.h" |
| | 9 | #include "OpenTypeUtilities.h" |
| | 10 | #include "OpenTypeTables.h" |
| | 11 | #include "ICUFeatures.h" |
| | 12 | #include "LESwaps.h" |
| | 13 | |
| | 14 | U_NAMESPACE_BEGIN |
| | 15 | |
| | 16 | LEReferenceTo<FeatureTable> FeatureListTable::getFeatureTable(const LETableReference &base, le_uint16 featureIndex, LETag *featureTag, LEErrorCode &success) const |
| | 17 | { |
| | 18 | if (featureIndex >= SWAPW(featureCount) || LE_FAILURE(success)) { |
| | 19 | return LEReferenceTo<FeatureTable>(); |
| | 20 | } |
| | 21 | |
| | 22 | Offset featureTableOffset = featureRecordArray[featureIndex].featureTableOffset; |
| | 23 | |
| | 24 | *featureTag = SWAPT(featureRecordArray[featureIndex].featureTag); |
| | 25 | |
| | 26 | return LEReferenceTo<FeatureTable>(base, success, SWAPW(featureTableOffset)); |
| | 27 | } |
| | 28 | |
| | 29 | #if 0 |
| | 30 | /* |
| | 31 | * Note: according to the OpenType Spec. v 1.4, the entries in the Feature |
| | 32 | * List Table are sorted alphabetically by feature tag; however, there seem |
| | 33 | * to be some fonts which have an unsorted list; that's why the binary search |
| | 34 | * is #if 0'd out and replaced by a linear search. |
| | 35 | * |
| | 36 | * Also note: as of ICU 2.6, this method isn't called anyhow... |
| | 37 | */ |
| | 38 | const FeatureTable *FeatureListTable::getFeatureTable(LETag featureTag) const |
| | 39 | { |
| | 40 | #if 0 |
| | 41 | Offset featureTableOffset = |
| | 42 | OpenTypeUtilities::getTagOffset(featureTag, (TagAndOffsetRecord *) featureRecordArray, SWAPW(featureCount)); |
| | 43 | |
| | 44 | if (featureTableOffset == 0) { |
| | 45 | return 0; |
| | 46 | } |
| | 47 | |
| | 48 | return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset)); |
| | 49 | #else |
| | 50 | int count = SWAPW(featureCount); |
| | 51 | |
| | 52 | for (int i = 0; i < count; i += 1) { |
| | 53 | if (SWAPT(featureRecordArray[i].featureTag) == featureTag) { |
| | 54 | return (const FeatureTable *) ((char *) this + SWAPW(featureRecordArray[i].featureTableOffset)); |
| | 55 | } |
| | 56 | } |
| | 57 | |
| | 58 | return 0; |
| | 59 | #endif |
| | 60 | } |
| | 61 | #endif |
| | 62 | |
| | 63 | U_NAMESPACE_END |
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