icuSources/samples/translit/unaccent.h

   1 /***********************************************************************
   2  * © 2016 and later: Unicode, Inc. and others.
   3  * License & terms of use: http://www.unicode.org/copyright.html#License
   4  ***********************************************************************
   5  ***********************************************************************
   6  * COPYRIGHT:
   7  * Copyright (c) 1999-2003, International Business Machines Corporation and
   8  * others. All Rights Reserved.
   9  ***********************************************************************/
  10
  11 #include "unicode/translit.h"
  12 #include "unicode/normlzr.h"
  13
  14 using namespace icu;
  15
  16 class UnaccentTransliterator : public Transliterator {
  17
  18  public:
  19
  20     /**
  21      * Constructor
  22      */
  23     UnaccentTransliterator();
  24
  25     /**
  26      * Destructor
  27      */
  28     virtual ~UnaccentTransliterator();
  29
  30  protected:
  31
  32     /**
  33      * Implement Transliterator API
  34      */
  35     virtual void handleTransliterate(Replaceable& text,
  36                                      UTransPosition& index,
  37                                      UBool incremental) const;
  38
  39  private:
  40
  41     /**
  42      * Unaccent a single character using normalizer.
  43      */
  44     UChar unaccent(UChar c) const;
  45
  46     Normalizer normalizer;
  47
  48 public:
  49
  50     /**
  51      * Return the class ID for this class.  This is useful only for
  52      * comparing to a return value from getDynamicClassID().  For example:
  53      * <pre>
  54      * .      Base* polymorphic_pointer = createPolymorphicObject();
  55      * .      if (polymorphic_pointer->getDynamicClassID() ==
  56      * .          Derived::getStaticClassID()) ...
  57      * </pre>
  58      * @return          The class ID for all objects of this class.
  59      * @stable ICU 2.0
  60      */
  61     static inline UClassID getStaticClassID(void) { return (UClassID)&fgClassID; };
  62
  63     /**
  64      * Returns a unique class ID <b>polymorphically</b>.  This method
  65      * is to implement a simple version of RTTI, since not all C++
  66      * compilers support genuine RTTI.  Polymorphic operator==() and
  67      * clone() methods call this method.
  68      *
  69      * <p>Concrete subclasses of Transliterator that wish clients to
  70      * be able to identify them should implement getDynamicClassID()
  71      * and also a static method and data member:
  72      *
  73      * <pre>
  74      * static UClassID getStaticClassID() { return (UClassID)&fgClassID; }
  75      * static char fgClassID;
  76      * </pre>
  77      *
  78      * Subclasses that do not implement this method will have a
  79      * dynamic class ID of Transliterator::getStatisClassID().
  80      *
  81      * @return The class ID for this object. All objects of a given
  82      * class have the same class ID.  Objects of other classes have
  83      * different class IDs.
  84      * @stable ICU 2.0
  85      */
  86     virtual UClassID getDynamicClassID(void) const { return getStaticClassID(); };
  87
  88 private:
  89
  90     /**
  91      * Class identifier for subclasses of Transliterator that do not
  92      * define their class (anonymous subclasses).
  93      */
  94     static const char fgClassID;
  95 };