| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "MorphTables.h" |
| #include "StateTables.h" |
| #include "MorphStateTables.h" |
| #include "SubtableProcessor.h" |
| #include "StateTableProcessor.h" |
| #include "IndicRearrangementProcessor.h" |
| #include "LEGlyphStorage.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(IndicRearrangementProcessor) |
| |
| IndicRearrangementProcessor::IndicRearrangementProcessor(const MorphSubtableHeader *morphSubtableHeader) |
| : StateTableProcessor(morphSubtableHeader) |
| { |
| indicRearrangementSubtableHeader = (const IndicRearrangementSubtableHeader *) morphSubtableHeader; |
| entryTable = (const IndicRearrangementStateEntry *) ((char *) &stateTableHeader->stHeader + entryTableOffset); |
| } |
| |
| IndicRearrangementProcessor::~IndicRearrangementProcessor() |
| { |
| } |
| |
| void IndicRearrangementProcessor::beginStateTable() |
| { |
| firstGlyph = 0; |
| lastGlyph = 0; |
| } |
| |
| ByteOffset IndicRearrangementProcessor::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index) |
| { |
| const IndicRearrangementStateEntry *entry = &entryTable[index]; |
| ByteOffset newState = SWAPW(entry->newStateOffset); |
| IndicRearrangementFlags flags = (IndicRearrangementFlags) SWAPW(entry->flags); |
| |
| if (flags & irfMarkFirst) { |
| firstGlyph = currGlyph; |
| } |
| |
| if (flags & irfMarkLast) { |
| lastGlyph = currGlyph; |
| } |
| |
| doRearrangementAction(glyphStorage, (IndicRearrangementVerb) (flags & irfVerbMask)); |
| |
| if (!(flags & irfDontAdvance)) { |
| // XXX: Should handle reverse too... |
| currGlyph += 1; |
| } |
| |
| return newState; |
| } |
| |
| void IndicRearrangementProcessor::endStateTable() |
| { |
| } |
| |
| void IndicRearrangementProcessor::doRearrangementAction(LEGlyphStorage &glyphStorage, IndicRearrangementVerb verb) const |
| { |
| LEGlyphID a, b, c, d; |
| le_int32 ia, ib, ic, id, ix, x; |
| LEErrorCode success = LE_NO_ERROR; |
| |
| switch(verb) |
| { |
| case irvNoAction: |
| break; |
| |
| case irvxA: |
| a = glyphStorage[firstGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| x = firstGlyph + 1; |
| |
| while (x <= lastGlyph) { |
| glyphStorage[x - 1] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x - 1, ix, success); |
| x += 1; |
| } |
| |
| glyphStorage[lastGlyph] = a; |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvDx: |
| d = glyphStorage[lastGlyph]; |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = lastGlyph - 1; |
| |
| while (x >= firstGlyph) { |
| glyphStorage[x + 1] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x + 1, ix, success); |
| x -= 1; |
| } |
| |
| glyphStorage[firstGlyph] = d; |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| break; |
| |
| case irvDxA: |
| a = glyphStorage[firstGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| |
| glyphStorage[firstGlyph] = glyphStorage[lastGlyph]; |
| glyphStorage[lastGlyph] = a; |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvxAB: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| x = firstGlyph + 2; |
| |
| while (x <= lastGlyph) { |
| glyphStorage[x - 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x - 2, ix, success); |
| x += 1; |
| } |
| |
| glyphStorage[lastGlyph - 1] = a; |
| glyphStorage[lastGlyph] = b; |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ia, success); |
| glyphStorage.setCharIndex(lastGlyph, ib, success); |
| break; |
| |
| case irvxBA: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| x = firstGlyph + 2; |
| |
| while (x <= lastGlyph) { |
| glyphStorage[x - 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x - 2, ix, success); |
| x += 1; |
| } |
| |
| glyphStorage[lastGlyph - 1] = b; |
| glyphStorage[lastGlyph] = a; |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ib, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvCDx: |
| c = glyphStorage[lastGlyph - 1]; |
| d = glyphStorage[lastGlyph]; |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = lastGlyph - 2; |
| |
| while (x >= firstGlyph) { |
| glyphStorage[x + 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x + 2, ix, success); |
| x -= 1; |
| } |
| |
| glyphStorage[firstGlyph] = c; |
| glyphStorage[firstGlyph + 1] = d; |
| |
| glyphStorage.setCharIndex(firstGlyph, ic, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, id, success); |
| break; |
| |
| case irvDCx: |
| c = glyphStorage[lastGlyph - 1]; |
| d = glyphStorage[lastGlyph]; |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = lastGlyph - 2; |
| |
| while (x >= firstGlyph) { |
| glyphStorage[x + 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x + 2, ix, success); |
| x -= 1; |
| } |
| |
| glyphStorage[firstGlyph] = d; |
| glyphStorage[firstGlyph + 1] = c; |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, ic, success); |
| break; |
| |
| case irvCDxA: |
| a = glyphStorage[firstGlyph]; |
| c = glyphStorage[lastGlyph - 1]; |
| d = glyphStorage[lastGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = lastGlyph - 2; |
| |
| while (x > firstGlyph) { |
| glyphStorage[x + 1] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x + 1, ix, success); |
| x -= 1; |
| } |
| |
| glyphStorage[firstGlyph] = c; |
| glyphStorage[firstGlyph + 1] = d; |
| glyphStorage[lastGlyph] = a; |
| |
| glyphStorage.setCharIndex(firstGlyph, ic, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, id, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvDCxA: |
| a = glyphStorage[firstGlyph]; |
| c = glyphStorage[lastGlyph - 1]; |
| d = glyphStorage[lastGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = lastGlyph - 2; |
| |
| while (x > firstGlyph) { |
| glyphStorage[x + 1] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x + 1, ix, success); |
| x -= 1; |
| } |
| |
| glyphStorage[firstGlyph] = d; |
| glyphStorage[firstGlyph + 1] = c; |
| glyphStorage[lastGlyph] = a; |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, ic, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvDxAB: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| d = glyphStorage[lastGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = firstGlyph + 2; |
| |
| while (x < lastGlyph) { |
| glyphStorage[x - 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x - 2, ix, success); |
| x += 1; |
| } |
| |
| glyphStorage[firstGlyph] = d; |
| glyphStorage[lastGlyph - 1] = a; |
| glyphStorage[lastGlyph] = b; |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(lastGlyph - 1, ia, success); |
| glyphStorage.setCharIndex(lastGlyph, ib, success); |
| break; |
| |
| case irvDxBA: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| d = glyphStorage[lastGlyph]; |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| x = firstGlyph + 2; |
| |
| while (x < lastGlyph) { |
| glyphStorage[x - 2] = glyphStorage[x]; |
| ix = glyphStorage.getCharIndex(x, success); |
| glyphStorage.setCharIndex(x - 2, ix, success); |
| x += 1; |
| } |
| |
| glyphStorage[firstGlyph] = d; |
| glyphStorage[lastGlyph - 1] = b; |
| glyphStorage[lastGlyph] = a; |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(lastGlyph - 1, ib, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvCDxAB: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| |
| glyphStorage[firstGlyph] = glyphStorage[lastGlyph - 1]; |
| glyphStorage[firstGlyph + 1] = glyphStorage[lastGlyph]; |
| |
| glyphStorage[lastGlyph - 1] = a; |
| glyphStorage[lastGlyph] = b; |
| |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| |
| glyphStorage.setCharIndex(firstGlyph, ic, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, id, success); |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ia, success); |
| glyphStorage.setCharIndex(lastGlyph, ib, success); |
| break; |
| |
| case irvCDxBA: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| |
| glyphStorage[firstGlyph] = glyphStorage[lastGlyph - 1]; |
| glyphStorage[firstGlyph + 1] = glyphStorage[lastGlyph]; |
| |
| glyphStorage[lastGlyph - 1] = b; |
| glyphStorage[lastGlyph] = a; |
| |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| |
| glyphStorage.setCharIndex(firstGlyph, ic, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, id, success); |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ib, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| case irvDCxAB: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| |
| glyphStorage[firstGlyph] = glyphStorage[lastGlyph]; |
| glyphStorage[firstGlyph + 1] = glyphStorage[lastGlyph - 1]; |
| |
| glyphStorage[lastGlyph - 1] = a; |
| glyphStorage[lastGlyph] = b; |
| |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, ic, success); |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ia, success); |
| glyphStorage.setCharIndex(lastGlyph, ib, success); |
| break; |
| |
| case irvDCxBA: |
| a = glyphStorage[firstGlyph]; |
| b = glyphStorage[firstGlyph + 1]; |
| |
| glyphStorage[firstGlyph] = glyphStorage[lastGlyph]; |
| glyphStorage[firstGlyph + 1] = glyphStorage[lastGlyph - 1]; |
| |
| glyphStorage[lastGlyph - 1] = b; |
| glyphStorage[lastGlyph] = a; |
| |
| ia = glyphStorage.getCharIndex(firstGlyph, success); |
| ib = glyphStorage.getCharIndex(firstGlyph + 1, success); |
| ic = glyphStorage.getCharIndex(lastGlyph - 1, success); |
| id = glyphStorage.getCharIndex(lastGlyph, success); |
| |
| glyphStorage.setCharIndex(firstGlyph, id, success); |
| glyphStorage.setCharIndex(firstGlyph + 1, ic, success); |
| |
| glyphStorage.setCharIndex(lastGlyph - 1, ib, success); |
| glyphStorage.setCharIndex(lastGlyph, ia, success); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| U_NAMESPACE_END |
