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Diffstat (limited to 'i18npool/source/breakiterator/breakiterator_th.cxx')
| -rw-r--r-- | i18npool/source/breakiterator/breakiterator_th.cxx | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/i18npool/source/breakiterator/breakiterator_th.cxx b/i18npool/source/breakiterator/breakiterator_th.cxx new file mode 100644 index 000000000000..cbbcd510379b --- /dev/null +++ b/i18npool/source/breakiterator/breakiterator_th.cxx @@ -0,0 +1,157 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_i18npool.hxx" +#include <breakiterator_th.hxx> +#include <wtt.h> + +#include <string.h> // for memset + +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::lang; +using namespace ::rtl; + +namespace com { namespace sun { namespace star { namespace i18n { + +// ---------------------------------------------------- +// class Breakiterator_th +// ----------------------------------------------------; +BreakIterator_th::BreakIterator_th() +{ + cBreakIterator = "com.sun.star.i18n.BreakIterator_th"; + wordRule=lineRule=NULL; +} + +BreakIterator_th::~BreakIterator_th() +{ +} + +#define SARA_AM 0x0E33 + +/* + * cell composition states + */ + +#define ST_COM 1 // Compose the following character with leading char and display in the same cell +#define ST_NXT 2 // display the following character in the next cell +#define ST_NDP 3 // non-display + +static const sal_Int16 thaiCompRel[MAX_CT][MAX_CT] = { + // C N C L F F F B B B T A A A A A A + // T O O V V V V V V D O D D D V V V + // R N N 1 2 3 1 2 N 1 2 3 1 2 3 + // L S E + // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + { 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 + +}; + +const sal_uInt32 is_ST_COM = (1<<CT_CTRL)|(1<<CT_NON)|(1<<CT_CONS)|(1<<CT_TONE); + +static sal_uInt16 SAL_CALL getCombState(const sal_Unicode *text, sal_Int32 pos) +{ + sal_uInt16 ch1 = getCharType(text[pos]); + sal_uInt16 ch2 = getCharType(text[pos+1]); + + if (text[pos+1] == SARA_AM) { + if ((1 << ch1) & is_ST_COM) + return ST_COM; + else + ch2 = CT_AD1; + } + + return thaiCompRel[ch1][ch2]; +} + + +static sal_Int32 SAL_CALL getACell(const sal_Unicode *text, sal_Int32 pos, sal_Int32 len) +{ + sal_uInt32 curr = 1; + for (; pos + 1 < len && getCombState(text, pos) == ST_COM; curr++, pos++) {} + return curr; +} + +#define is_Thai(c) (0x0e00 <= c && c <= 0x0e7f) // Unicode definition for Thai + +void SAL_CALL BreakIterator_th::makeIndex(const OUString& Text, sal_Int32 nStartPos) + throw(RuntimeException) +{ + if (Text != cachedText) { + cachedText = Text; + if (cellIndexSize < cachedText.getLength()) { + cellIndexSize = cachedText.getLength(); + free(nextCellIndex); + free(previousCellIndex); + nextCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); + previousCellIndex = (sal_Int32*) calloc(cellIndexSize, sizeof(sal_Int32)); + } + // reset nextCell for new Text + memset(nextCellIndex, 0, cellIndexSize * sizeof(sal_Int32)); + } + else if (nextCellIndex[nStartPos] > 0 || ! is_Thai(Text[nStartPos])) + return; + + const sal_Unicode* str = cachedText.getStr(); + sal_Int32 len = cachedText.getLength(), startPos, endPos; + + startPos = nStartPos; + while (startPos > 0 && is_Thai(str[startPos-1])) startPos--; + endPos = nStartPos+1; + while (endPos < len && is_Thai(str[endPos])) endPos++; + + sal_Int32 start, end, pos; + pos = start = end = startPos; + + while (pos < endPos) { + end += getACell(str, start, endPos); + while (pos < end) { + nextCellIndex[pos] = end; + previousCellIndex[pos] = start; + pos++; + } + start = end; + } +} + +} } } } |