1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_i18npool.hxx" 26 #include <breakiterator_th.hxx> 27 #include <wtt.h> 28 29 #include <string.h> // for memset 30 31 using namespace ::com::sun::star::uno; 32 using namespace ::com::sun::star::lang; 33 using namespace ::rtl; 34 35 namespace com { namespace sun { namespace star { namespace i18n { 36 37 // ---------------------------------------------------- 38 // class Breakiterator_th 39 // ----------------------------------------------------; 40 BreakIterator_th::BreakIterator_th() 41 { 42 cBreakIterator = "com.sun.star.i18n.BreakIterator_th"; 43 wordRule=lineRule=NULL; 44 } 45 46 BreakIterator_th::~BreakIterator_th() 47 { 48 } 49 50 #define SARA_AM 0x0E33 51 52 /* 53 * cell composition states 54 */ 55 56 #define ST_COM 1 // Compose the following character with leading char and display in the same cell 57 #define ST_NXT 2 // display the following character in the next cell 58 #define ST_NDP 3 // non-display 59 60 static const sal_Int16 thaiCompRel[MAX_CT][MAX_CT] = { 61 // C N C L F F F B B B T A A A A A A 62 // T O O V V V V V V D O D D D V V V 63 // R N N 1 2 3 1 2 N 1 2 3 1 2 3 64 // L S E 65 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 66 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // CTRL 0 67 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // NON 1 68 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM, ST_COM }, // CONS 2 69 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // LV 3 70 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // FV1 4 71 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // FV2 5 72 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // FV3 6 73 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_COM, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // BV1 7 74 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // BV2 8 75 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // BD 9 76 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // TONE 10 77 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // AD1 11 78 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // AD2 12 79 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // AD3 13 80 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_COM, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // AV1 14 81 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT }, // AV2 15 82 { ST_NDP, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_NXT, ST_COM, ST_NXT, ST_COM, ST_NXT, ST_NXT, ST_NXT, ST_NXT } // AV3 16 83 84 }; 85 86 const sal_uInt32 is_ST_COM = (1<<CT_CTRL)|(1<<CT_NON)|(1<<CT_CONS)|(1<<CT_TONE); 87 88 static sal_uInt16 SAL_CALL getCombState(const sal_Unicode *text, sal_Int32 pos) 89 { 90 sal_uInt16 ch1 = getCharType(text[pos]); 91 sal_uInt16 ch2 = getCharType(text[pos+1]); 92 93 if (text[pos+1] == SARA_AM) { 94 if ((1 << ch1) & is_ST_COM) 95 return ST_COM; 96 else 97 ch2 = CT_AD1; 98 } 99 100 return thaiCompRel[ch1][ch2]; 101 } 102 103 104 static sal_Int32 SAL_CALL getACell(const sal_Unicode *text, sal_Int32 pos, sal_Int32 len) 105 { 106 sal_uInt32 curr = 1; 107 for (; pos + 1 < len && getCombState(text, pos) == ST_COM; curr++, pos++) {} 108 return curr; 109 } 110 111 #define is_Thai(c) (0x0e00 <= c && c <= 0x0e7f) // Unicode definition for Thai 112 113 void SAL_CALL BreakIterator_th::makeIndex(const OUString& Text, sal_Int32 nStartPos) 114 throw(RuntimeException) 115 { 116 if (Text != cachedText) { 117 cachedText = Text; 118 if (cellIndexSize < cachedText.getLength()) { 119 cellIndexSize = cachedText.getLength(); 120 free(nextCellIndex); 121 free(previousCellIndex); 122 nextCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); 123 previousCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); 124 } 125 // reset nextCell for new Text 126 memset(nextCellIndex, 0, cellIndexSize * sizeof(sal_Int32)); 127 } 128 else if (nextCellIndex[nStartPos] > 0 || ! is_Thai(Text[nStartPos])) 129 return; 130 131 const sal_Unicode* str = cachedText.getStr(); 132 sal_Int32 len = cachedText.getLength(), startPos, endPos; 133 134 startPos = nStartPos; 135 while (startPos > 0 && is_Thai(str[startPos-1])) startPos--; 136 endPos = nStartPos+1; 137 while (endPos < len && is_Thai(str[endPos])) endPos++; 138 139 sal_Int32 start, end, pos; 140 pos = start = end = startPos; 141 142 while (pos < endPos) { 143 end += getACell(str, start, endPos); 144 while (pos < end) { 145 nextCellIndex[pos] = end; 146 previousCellIndex[pos] = start; 147 pos++; 148 } 149 start = end; 150 } 151 } 152 153 } } } } 154