strenum.h

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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 2002-2012, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*/

#ifndef STRENUM_H
#define STRENUM_H

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#include "unicode/uobject.h"
#include "unicode/unistr.h"

U_NAMESPACE_BEGIN

class U_COMMON_API StringEnumeration : public UObject { 
public:
    virtual ~StringEnumeration();

    virtual StringEnumeration *clone() const;

    virtual int32_t count(UErrorCode& status) const = 0;

    virtual const char* next(int32_t *resultLength, UErrorCode& status);

    virtual const char16_t* unext(int32_t *resultLength, UErrorCode& status);

    virtual const UnicodeString* snext(UErrorCode& status);

    virtual void reset(UErrorCode& status) = 0;

    virtual UBool operator==(const StringEnumeration& that)const;
    virtual UBool operator!=(const StringEnumeration& that)const;

protected:
    UnicodeString unistr;
    char charsBuffer[32];
    char *chars;
    int32_t charsCapacity;

    StringEnumeration();

    void ensureCharsCapacity(int32_t capacity, UErrorCode &status);

    UnicodeString *setChars(const char *s, int32_t length, UErrorCode &status);
};

U_NAMESPACE_END

#endif /* U_SHOW_CPLUSPLUS_API */

/* STRENUM_H */
#endif