xref: /aoo42x/main/i18npool/inc/xdictionary.hxx (revision a893be29)

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 * to you under the Apache License, Version 2.0 (the
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#ifndef _XDICTIONARY_H_
#define _XDICTIONARY_H_

#include <sal/types.h>
#include <osl/module.h>

#include <com/sun/star/i18n/Boundary.hpp>

namespace com { namespace sun { namespace star { namespace i18n {

// Whether to use cell boundary code, currently unused but prepared.
#define USE_CELL_BOUNDARY_CODE 0

#define CACHE_MAX 32		// max cache structure number
#define DEFAULT_SIZE 256	// for boundary size, to avoid alloc and release memory

// cache structure.
struct WordBreakCache {
	sal_Int32 length;		// contents length saved here.
	sal_Unicode *contents;		// separated segment contents.
	sal_Int32* wordboundary;     	// word boundaries in segments.
	sal_Int32 size;			// size of wordboundary

    WordBreakCache();
    sal_Bool equals(const sal_Unicode *str, Boundary& boundary);    // checking cached string
};

class xdictionary
{
private:
	const sal_uInt8  * existMark;
	const sal_Int16  * index1;
	const sal_Int32 * index2;
	const sal_Int32 * lenArray;
	const sal_Unicode* dataArea;
	oslModule hModule;
	Boundary boundary;
    sal_Bool japaneseWordBreak;

#if USE_CELL_BOUNDARY_CODE
    // For CTL breakiterator, where the word boundary should not be inside cell.
	sal_Bool useCellBoundary;
	sal_Int32* cellBoundary;
#endif

public:
	xdictionary(const sal_Char *lang);
	~xdictionary();
	Boundary nextWord( const rtl::OUString& rText, sal_Int32 nPos, sal_Int16 wordType);
	Boundary previousWord( const rtl::OUString& rText, sal_Int32 nPos, sal_Int16 wordType);
	Boundary getWordBoundary( const rtl::OUString& rText, sal_Int32 nPos, sal_Int16 wordType, sal_Bool bDirection );
    void setJapaneseWordBreak();

#if USE_CELL_BOUNDARY_CODE
    void setCellBoundary(sal_Int32* cellArray);
#endif

private:
	WordBreakCache cache[CACHE_MAX];

	sal_Bool        seekSegment(const rtl::OUString& rText, sal_Int32 pos, Boundary& boundary);
	WordBreakCache& getCache(const sal_Unicode *text, Boundary& boundary);
	sal_Bool        exists(const sal_uInt32 u);
	sal_Int32       getLongestMatch(const sal_Unicode *text, sal_Int32 len);
};

} } } }

#endif