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If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 // MARKER(update_precomp.py): autogen include statement, do not remove 29 #include "precompiled_i18npool.hxx" 30 #include <breakiterator_th.hxx> 31 #include <wtt.h> 32 33 #include <string.h> // for memset 34 35 using namespace ::com::sun::star::uno; 36 using namespace ::com::sun::star::lang; 37 using namespace ::rtl; 38 39 namespace com { namespace sun { namespace star { namespace i18n { 40 41 // ---------------------------------------------------- 42 // class Breakiterator_th 43 // ----------------------------------------------------; 44 BreakIterator_th::BreakIterator_th() 45 { 46 cBreakIterator = "com.sun.star.i18n.BreakIterator_th"; 47 wordRule=lineRule=NULL; 48 } 49 50 BreakIterator_th::~BreakIterator_th() 51 { 52 } 53 54 #define SARA_AM 0x0E33 55 56 /* 57 * cell composition states 58 */ 59 60 #define ST_COM 1 // Compose the following character with leading char and display in the same cell 61 #define ST_NXT 2 // display the following character in the next cell 62 #define ST_NDP 3 // non-display 63 64 static const sal_Int16 thaiCompRel[MAX_CT][MAX_CT] = { 65 // C N C L F F F B B B T A A A A A A 66 // T O O V V V V V V D O D D D V V V 67 // R N N 1 2 3 1 2 N 1 2 3 1 2 3 68 // L S E 69 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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 }, // CTRL 0 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 }, // NON 1 72 { 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 73 { 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 74 { 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 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 }, // FV2 5 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 }, // FV3 6 77 { 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 78 { 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 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 }, // BD 9 80 { 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 81 { 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 82 { 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 83 { 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 84 { 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 85 { 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 86 { 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 87 88 }; 89 90 const sal_uInt32 is_ST_COM = (1<<CT_CTRL)|(1<<CT_NON)|(1<<CT_CONS)|(1<<CT_TONE); 91 92 static sal_uInt16 SAL_CALL getCombState(const sal_Unicode *text, sal_Int32 pos) 93 { 94 sal_uInt16 ch1 = getCharType(text[pos]); 95 sal_uInt16 ch2 = getCharType(text[pos+1]); 96 97 if (text[pos+1] == SARA_AM) { 98 if ((1 << ch1) & is_ST_COM) 99 return ST_COM; 100 else 101 ch2 = CT_AD1; 102 } 103 104 return thaiCompRel[ch1][ch2]; 105 } 106 107 108 static sal_Int32 SAL_CALL getACell(const sal_Unicode *text, sal_Int32 pos, sal_Int32 len) 109 { 110 sal_uInt32 curr = 1; 111 for (; pos + 1 < len && getCombState(text, pos) == ST_COM; curr++, pos++) {} 112 return curr; 113 } 114 115 #define is_Thai(c) (0x0e00 <= c && c <= 0x0e7f) // Unicode definition for Thai 116 117 void SAL_CALL BreakIterator_th::makeIndex(const OUString& Text, sal_Int32 nStartPos) 118 throw(RuntimeException) 119 { 120 if (Text != cachedText) { 121 cachedText = Text; 122 if (cellIndexSize < cachedText.getLength()) { 123 cellIndexSize = cachedText.getLength(); 124 free(nextCellIndex); 125 free(previousCellIndex); 126 nextCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); 127 previousCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); 128 } 129 // reset nextCell for new Text 130 memset(nextCellIndex, 0, cellIndexSize * sizeof(sal_Int32)); 131 } 132 else if (nextCellIndex[nStartPos] > 0 || ! is_Thai(Text[nStartPos])) 133 return; 134 135 const sal_Unicode* str = cachedText.getStr(); 136 sal_Int32 len = cachedText.getLength(), startPos, endPos; 137 138 startPos = nStartPos; 139 while (startPos > 0 && is_Thai(str[startPos-1])) startPos--; 140 endPos = nStartPos+1; 141 while (endPos < len && is_Thai(str[endPos])) endPos++; 142 143 sal_Int32 start, end, pos; 144 pos = start = end = startPos; 145 146 while (pos < endPos) { 147 end += getACell(str, start, endPos); 148 while (pos < end) { 149 nextCellIndex[pos] = end; 150 previousCellIndex[pos] = start; 151 pos++; 152 } 153 start = end; 154 } 155 } 156 157 } } } } 158