| /* |
| * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
| * 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. |
| */ |
| |
| package com.sun.inputmethods.internal.thaiim; |
| |
| import java.awt.im.InputMethodRequests; |
| |
| public class ThaiRules { |
| |
| public static final char BASE = 0x0e00; |
| |
| public static final byte NON = 0; |
| public static final byte CONS = 1; |
| public static final byte LV = 2; |
| public static final byte FV1 = 3; |
| public static final byte FV2 = 4; |
| public static final byte FV3 = 5; |
| public static final byte FV4 = 6; |
| /* Note that FV4 is added. It is not in WTT. |
| * We need it for SARA AM since it has a |
| * weired characteristic to share the same |
| * cell with whatever consonant preceeds it. |
| */ |
| public static final byte BV1 = 7; |
| public static final byte BV2 = 8; |
| public static final byte BD = 9; |
| public static final byte TONE = 10; |
| public static final byte AD1 = 11; |
| public static final byte AD2 = 12; |
| public static final byte AD3 = 13; |
| public static final byte AV1 = 14; |
| public static final byte AV2 = 15; |
| public static final byte AV3 = 16; |
| |
| /** |
| * Constants for validity checking and auto correction |
| */ |
| public static final byte STRICT = 0; |
| public static final byte LOOSE = 1; |
| public static final byte NOREPLACE = 2; |
| |
| public static final byte[] CHARTYPE = { |
| /* 0e00 UNUSED */ NON, |
| /* THAI CHARACTER KO KAI */ CONS, |
| /* THAI CHARACTER KHO KHAI */ CONS, |
| /* THAI CHARACTER KHO KHUAT */ CONS, |
| /* THAI CHARACTER KHO KHWAI */ CONS, |
| /* THAI CHARACTER KHO KHON */ CONS, |
| /* THAI CHARACTER KHO RAKHANG */ CONS, |
| /* THAI CHARACTER NGO NGU */ CONS, |
| /* THAI CHARACTER CHO CHAN */ CONS, |
| /* THAI CHARACTER CHO CHING */ CONS, |
| /* THAI CHARACTER CHO CHANG */ CONS, |
| /* THAI CHARACTER SO SO */ CONS, |
| /* THAI CHARACTER CHO CHOE */ CONS, |
| /* THAI CHARACTER YO YING */ CONS, |
| /* THAI CHARACTER DO CHADA */ CONS, |
| /* THAI CHARACTER TO PATAK */ CONS, |
| /* THAI CHARACTER THO THAN */ CONS, |
| /* THAI CHARACTER THO NANGMONTHO */ CONS, |
| /* THAI CHARACTER THO PHUTHAO */ CONS, |
| /* THAI CHARACTER NO NEN */ CONS, |
| /* THAI CHARACTER DO DEK */ CONS, |
| /* THAI CHARACTER TO TAO */ CONS, |
| /* THAI CHARACTER THO THUNG */ CONS, |
| /* THAI CHARACTER THO THAHAN */ CONS, |
| /* THAI CHARACTER THO THONG */ CONS, |
| /* THAI CHARACTER NO NU */ CONS, |
| /* THAI CHARACTER BO BAIMAI */ CONS, |
| /* THAI CHARACTER PO PLA */ CONS, |
| /* THAI CHARACTER PHO PHUNG */ CONS, |
| /* THAI CHARACTER FO FA */ CONS, |
| /* THAI CHARACTER PHO PHAN */ CONS, |
| /* THAI CHARACTER FO FAN */ CONS, |
| /* THAI CHARACTER PHO SAMPHAO */ CONS, |
| /* THAI CHARACTER MO MA */ CONS, |
| /* THAI CHARACTER YO YAK */ CONS, |
| /* THAI CHARACTER RO RUA */ CONS, |
| /* THAI CHARACTER RU */ FV3, |
| /* THAI CHARACTER LO LING */ CONS, |
| /* THAI CHARACTER LU */ FV3, |
| /* THAI CHARACTER WO WAEN */ CONS, |
| /* THAI CHARACTER SO SALA */ CONS, |
| /* THAI CHARACTER SO RUSI */ CONS, |
| /* THAI CHARACTER SO SUA */ CONS, |
| /* THAI CHARACTER HO HIP */ CONS, |
| /* THAI CHARACTER LO CHULA */ CONS, |
| /* THAI CHARACTER O ANG */ CONS, |
| /* THAI CHARACTER HO NOKHUK */ CONS, |
| /* THAI CHARACTER PAIYANNOI */ NON, |
| /* THAI CHARACTER SARA A */ FV1, |
| /* THAI CHARACTER MAI HAN-AKAT */ AV2, |
| /* THAI CHARACTER SARA AA */ FV1, |
| /* THAI CHARACTER SARA AM */ FV4, |
| /* THAI CHARACTER SARA I */ AV1, |
| /* THAI CHARACTER SARA II */ AV3, |
| /* THAI CHARACTER SARA UE */ AV2, |
| /* THAI CHARACTER SARA UEE */ AV3, |
| /* THAI CHARACTER SARA U */ BV1, |
| /* THAI CHARACTER SARA UU */ BV2, |
| /* THAI CHARACTER PHINTHU */ BD, |
| /* 0e3b UNUSED */ NON, |
| /* 0e3c UNUSED */ NON, |
| /* 0e3d UNUSED */ NON, |
| /* 0e3e UNUSED */ NON, |
| /* THAI CURRENCY SYMBOL BAHT */ NON, |
| /* THAI CHARACTER SARA E */ LV, |
| /* THAI CHARACTER SARA AE */ LV, |
| /* THAI CHARACTER SARA O */ LV, |
| /* THAI CHARACTER SARA AI MAIMUAN */ LV, |
| /* THAI CHARACTER SARA AI MAIMALAI */ LV, |
| /* THAI CHARACTER LAKKHANGYAO */ FV2, |
| /* THAI CHARACTER MAIYAMOK */ NON, |
| /* THAI CHARACTER MAITAIKHU */ AD2, |
| /* THAI CHARACTER MAI EK */ TONE, |
| /* THAI CHARACTER MAI THO */ TONE, |
| /* THAI CHARACTER MAI TRI */ TONE, |
| /* THAI CHARACTER MAI CHATTAWA */ TONE, |
| /* THAI CHARACTER THANTHAKHAT */ AD1, |
| /* THAI CHARACTER NIKHAHIT */ AD3, |
| /* THAI CHARACTER YAMAKKAN */ AD3, |
| /* THAI CHARACTER FONGMAN */ NON, |
| /* THAI DIGIT ZERO */ NON, |
| /* THAI DIGIT ONE */ NON, |
| /* THAI DIGIT TWO */ NON, |
| /* THAI DIGIT THREE */ NON, |
| /* THAI DIGIT FOUR */ NON, |
| /* THAI DIGIT FIVE */ NON, |
| /* THAI DIGIT SIX */ NON, |
| /* THAI DIGIT SEVEN */ NON, |
| /* THAI DIGIT EIGHT */ NON, |
| /* THAI DIGIT NINE */ NON, |
| /* THAI CHARACTER ANGKHANKHU */ NON, |
| /* THAI CHARACTER KHOMUT */ NON |
| }; |
| |
| private InputMethodRequests requests; |
| |
| ThaiRules(InputMethodRequests requests) { |
| this.requests = requests; |
| } |
| |
| public static byte getCharType(char c) { |
| byte cType; |
| int ci = ((int) c) - (int) BASE; |
| if (ci < 0 || ci >= CHARTYPE.length) |
| cType = NON; |
| else |
| cType = CHARTYPE[ci]; |
| return cType; |
| } |
| |
| private static boolean isValid(char c1, char c2, int[] validityArray) { |
| return ((validityArray[getCharType(c1)] |
| & (1 << getCharType(c2))) != 0); |
| } |
| |
| /** |
| * VALIDITY is a bit matrix defining whether one |
| * character is allowed to be typed in after the |
| * previous one (array index). Determining the |
| * validity is done by bit-anding the 2nd char |
| * type's mask (obtained by 1 << chartype) with |
| * the array element indexed by the first char |
| * type. If the result is non-zero, the 2nd |
| * character is allowed to follow the first. |
| */ |
| |
| /* Please note that the bits in the comment below |
| * are displayed least significant bit first. |
| * The actual value reflexs this representation |
| * when the bits are swapped. |
| */ |
| |
| private static final int[] INPUTVALIDITY = { |
| /* NON 1110 010 0 0000 0000 0 */ 0x00027, |
| /* CONS 1111 111 1 1111 1111 1 */ 0x1ffff, |
| /* LV 0100 000 0 0000 0000 0 */ 0x00002, |
| /* FV1 1110 010 0 0000 0000 0 */ 0x00027, |
| /* FV2 1110 010 0 0000 0000 0 */ 0x00027, |
| /* FV3 1110 110 0 0000 0000 0 */ 0x00037, |
| /* FV4 1110 010 0 0000 0000 0 */ 0x00027, |
| /* BV1 1110 010 0 0011 0000 0 */ 0x00c27, |
| /* BV2 1110 010 0 0010 0000 0 */ 0x00427, |
| /* BD 1110 010 0 0000 0000 0 */ 0x00027, |
| /* TONE 1111 011 0 0000 0000 0 */ 0x0006f, |
| /* AD1 1110 010 0 0000 0000 0 */ 0x00027, |
| /* AD2 1110 010 0 0000 0000 0 */ 0x00027, |
| /* AD3 1110 010 0 0000 0000 0 */ 0x00027, |
| /* AV1 1110 010 0 0011 0000 0 */ 0x00c27, |
| /* AV2 1110 010 0 0010 0000 0 */ 0x00427, |
| /* AV3 1110 010 0 0010 0100 0 */ 0x02427 |
| }; |
| |
| private static final int[] COMPOSABLE = { |
| /* NON 0000 000 0 0000 0000 0 */ 0x00000, |
| /* CONS 0000 001 1 1111 1111 1 */ 0x1ffc0, |
| /* LV 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV3 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV4 0000 000 0 0000 0000 0 */ 0x00000, |
| /* BV1 0000 000 0 0011 0000 0 */ 0x00c00, |
| /* BV2 0000 000 0 0010 0000 0 */ 0x00400, |
| /* BD 0000 000 0 0000 0000 0 */ 0x00000, |
| /* TONE 0000 001 0 0000 0000 0 */ 0x00040, |
| /* AD1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AD2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AD3 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AV1 0000 000 0 0011 0000 0 */ 0x00c00, |
| /* AV2 0000 000 0 0010 0000 0 */ 0x00400, |
| /* AV3 0000 000 0 0010 0100 0 */ 0x02400 |
| }; |
| |
| private static final int[] REPLACABLE = { |
| /* NON 0000 000 0 0000 0000 0 */ 0x00000, |
| /* CONS 0000 000 0 0000 0000 0 */ 0x00000, |
| /* LV 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV3 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV4 0000 001 1 1001 1111 1 */ 0x1f9c0, |
| /* BV1 0000 001 1 1100 1111 1 */ 0x1f3c0, |
| /* BV2 0000 001 1 1101 1111 1 */ 0x1fbc0, |
| /* BD 0000 001 1 1111 1111 1 */ 0x1ffc0, |
| /* TONE 0000 000 0 0111 1100 0 */ 0x03e00, |
| /* AD1 0000 001 0 1111 1101 1 */ 0x1bf40, |
| /* AD2 0000 001 1 1111 1111 1 */ 0x1ffc0, |
| /* AD3 0000 001 1 1111 1111 0 */ 0x0ffc0, |
| /* AV1 0000 001 1 1100 1111 1 */ 0x1f3c0, |
| /* AV2 0000 001 1 1101 1111 1 */ 0x1fbc0, |
| /* AV3 0000 001 1 1101 1011 1 */ 0x1dbc0 |
| }; |
| |
| private static final int[] SWAPPABLE = { |
| /* NON 0000 000 0 0000 0000 0 */ 0x00000, |
| /* CONS 0000 000 0 0000 0000 0 */ 0x00000, |
| /* LV 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV3 0000 000 0 0000 0000 0 */ 0x00000, |
| /* FV4 0000 000 0 0010 0000 0 */ 0x00400, |
| /* BV1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* BV2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* BD 0000 000 0 0000 0000 0 */ 0x00000, |
| /* TONE 0000 000 1 1000 0011 1 */ 0x1c180, |
| /* AD1 0000 000 1 0000 0010 0 */ 0x04080, |
| /* AD2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AD3 0000 000 0 0000 0000 1 */ 0x10000, |
| /* AV1 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AV2 0000 000 0 0000 0000 0 */ 0x00000, |
| /* AV3 0000 000 0 0000 0000 0 */ 0x00000 |
| }; |
| |
| public static boolean isInputValid(char c1, char c2) { |
| return isValid(c1, c2, INPUTVALIDITY); |
| } |
| |
| public static boolean isComposable(char c1, char c2) { |
| return isValid(c1, c2, COMPOSABLE); |
| } |
| |
| public static boolean isSwappable(char c1, char c2) { |
| return isValid(c1, c2, SWAPPABLE); |
| } |
| |
| public static boolean isReplacable(char c1, char c2) { |
| return isValid(c1, c2, REPLACABLE); |
| } |
| |
| public static boolean isForward(char c) { |
| return (getCharType(c) < FV4); |
| } |
| |
| public static boolean isDead(char c) { |
| return (getCharType(c) > FV3); |
| } |
| |
| public boolean isInputValid(char current) { |
| int offset = requests.getInsertPositionOffset(); |
| if (offset == 0) { |
| byte charType = getCharType(current); |
| return ((charType < FV1) || (charType == FV3)); |
| } |
| else { |
| char prev = requests.getCommittedText(offset-1, offset, null).first(); |
| |
| if(isForward(current)) { |
| if (isInputValid(prev, current)) { |
| if (getCharType(prev) == TONE && |
| getCharType(current) == FV1) { |
| if (offset == 1) { |
| return true; |
| } else { |
| char pprev = |
| requests.getCommittedText(offset-2, offset-1, null).first(); |
| return isInputValid(pprev, current); |
| } |
| } else { |
| return true; |
| } |
| } else if (prev == '\u0e32' && // SARA AA |
| current == '\u0e30') { // SARA A |
| return true; |
| } else if (prev == '\u0e4d' && // NIKAHIT |
| current == '\u0e32') { // SARA AA |
| // Special compose to SARA AM |
| return true; |
| } else { |
| return false; |
| } |
| } else { |
| if(isInputValid(prev, current)) { |
| if (getCharType(prev) == TONE && |
| getCharType(current) == FV4) { |
| return (offset != 1); |
| } else { |
| return true; |
| } |
| } else { |
| return false; |
| } |
| } |
| } |
| } |
| } |
