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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
105