icuSources/i18n/brktrans.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 **********************************************************************
   5 *   Copyright (C) 2008-2015, International Business Machines
   6 *   Corporation and others.  All Rights Reserved.
   7 **********************************************************************
   8 *   Date        Name        Description
   9 *   05/11/2008  Andy Heninger  Ported from Java
  10 **********************************************************************
  11 */
  12 #ifndef BRKTRANS_H
  13 #define BRKTRANS_H
  14
  15 #include "unicode/utypes.h"
  16
  17 #if !UCONFIG_NO_TRANSLITERATION && !UCONFIG_NO_BREAK_ITERATION
  18
  19 #include "unicode/translit.h"
  20
  21 #include "unicode/localpointer.h"
  22
  23
  24 U_NAMESPACE_BEGIN
  25
  26 class UVector32;
  27
  28 /**
  29  * A transliterator that pInserts the specified characters at word breaks.
  30  * To restrict it to particular characters, use a filter.
  31  * TODO: this is an internal class, and only temporary.
  32  * Remove it once we have \b notation in Transliterator.
  33  */
  34 class BreakTransliterator : public Transliterator {
  35 public:
  36
  37     /**
  38      * Constructs a transliterator.
  39      * @param adoptedFilter    the filter for this transliterator.
  40      */
  41     BreakTransliterator(UnicodeFilter* adoptedFilter = 0);
  42
  43     /**
  44      * Destructor.
  45      */
  46     virtual ~BreakTransliterator();
  47
  48     /**
  49      * Copy constructor.
  50      */
  51     BreakTransliterator(const BreakTransliterator&);
  52
  53     /**
  54      * Transliterator API.
  55      * @return    A copy of the object.
  56      */
  57     virtual Transliterator* clone(void) const;
  58
  59     virtual const UnicodeString &getInsertion() const;
  60
  61     virtual void setInsertion(const UnicodeString &insertion);
  62
  63     /**
  64      * ICU "poor man's RTTI", returns a UClassID for the actual class.
  65      */
  66     virtual UClassID getDynamicClassID() const;
  67
  68     /**
  69      * ICU "poor man's RTTI", returns a UClassID for this class.
  70      */
  71     U_I18N_API static UClassID U_EXPORT2 getStaticClassID();
  72
  73  protected:
  74
  75     /**
  76      * Implements {@link Transliterator#handleTransliterate}.
  77      * @param text          the buffer holding transliterated and
  78      *                      untransliterated text
  79      * @param offset        the start and limit of the text, the position
  80      *                      of the cursor, and the start and limit of transliteration.
  81      * @param incremental   if true, assume more text may be coming after
  82      *                      pos.contextLimit. Otherwise, assume the text is complete.
  83      */
  84     virtual void handleTransliterate(Replaceable& text, UTransPosition& offset,
  85                                      UBool isIncremental) const;
  86
  87  private:
  88      LocalPointer<BreakIterator> cachedBI;
  89      LocalPointer<UVector32>     cachedBoundaries;
  90      UnicodeString               fInsertion;
  91
  92      static UnicodeString replaceableAsString(Replaceable &r);
  93
  94     /**
  95      * Assignment operator.
  96      */
  97     BreakTransliterator& operator=(const BreakTransliterator&);
  98 };
  99
 100 U_NAMESPACE_END
 101
 102 #endif /* #if !UCONFIG_NO_TRANSLITERATION */
 103
 104 #endif