| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved |
| * |
| */ |
| |
| #ifndef __THAISHAPING_H |
| #define __THAISHAPING_H |
| |
| /** |
| * \file |
| * \internal |
| */ |
| |
| #include "LETypes.h" |
| #include "LEGlyphFilter.h" |
| #include "OpenTypeTables.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| class LEGlyphStorage; |
| |
| class ThaiShaping /* not : public UObject because all methods are static */ { |
| public: |
| |
| enum { |
| // Character classes |
| NON = 0, |
| CON = 1, |
| COA = 2, |
| COD = 3, |
| LVO = 4, |
| FV1 = 5, |
| FV2 = 6, |
| FV3 = 7, |
| BV1 = 8, |
| BV2 = 9, |
| BDI = 10, |
| TON = 11, |
| AD1 = 12, |
| AD2 = 13, |
| AD3 = 14, |
| NIK = 15, |
| AV1 = 16, |
| AV2 = 17, |
| AV3 = 18, |
| classCount = 19, |
| |
| // State Transition actions |
| tA = 0, |
| tC = 1, |
| tD = 2, |
| tE = 3, |
| tF = 4, |
| tG = 5, |
| tH = 6, |
| tR = 7, |
| tS = 8, |
| stateCount = 52 |
| }; |
| |
| struct StateTransition |
| { |
| le_uint8 nextState; |
| le_uint8 action; |
| |
| le_uint8 getNextState() { return nextState; }; |
| le_uint8 getAction() { return action; }; |
| }; |
| |
| static le_int32 compose(const LEUnicode *input, le_int32 offset, le_int32 charCount, le_uint8 glyphSet, |
| LEUnicode errorChar, LEUnicode *output, LEGlyphStorage &glyphStorage); |
| |
| private: |
| // forbid instantiation |
| ThaiShaping(); |
| |
| static const le_uint8 classTable[]; |
| static const StateTransition thaiStateTable[stateCount][classCount]; |
| |
| inline static StateTransition getTransition(le_uint8 state, le_uint8 currClass); |
| |
| static le_uint8 doTransition(StateTransition transition, LEUnicode currChar, le_int32 inputIndex, le_uint8 glyphSet, |
| LEUnicode errorChar, LEUnicode *outputBuffer, LEGlyphStorage &glyphStorage, le_int32 &outputIndex); |
| |
| static le_uint8 getNextState(LEUnicode ch, le_uint8 state, le_int32 inputIndex, le_uint8 glyphSet, LEUnicode errorChar, |
| le_uint8 &charClass, LEUnicode *output, LEGlyphStorage &glyphStorage, le_int32 &outputIndex); |
| |
| static le_bool isLegalHere(LEUnicode ch, le_uint8 prevState); |
| static le_uint8 getCharClass(LEUnicode ch); |
| |
| static LEUnicode noDescenderCOD(LEUnicode cod, le_uint8 glyphSet); |
| static LEUnicode leftAboveVowel(LEUnicode vowel, le_uint8 glyphSet); |
| static LEUnicode lowerBelowVowel(LEUnicode vowel, le_uint8 glyphSet); |
| static LEUnicode lowerRightTone(LEUnicode tone, le_uint8 glyphSet); |
| static LEUnicode lowerLeftTone(LEUnicode tone, le_uint8 glyphSet); |
| static LEUnicode upperLeftTone(LEUnicode tone, le_uint8 glyphSet); |
| |
| }; |
| |
| inline ThaiShaping::StateTransition ThaiShaping::getTransition(le_uint8 state, le_uint8 currClass) |
| { |
| return thaiStateTable[state][currClass]; |
| } |
| |
| U_NAMESPACE_END |
| #endif |