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/*
*******************************************************************************
*
* Copyright (C) 2012, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: listformatter.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 20120426
* created by: Umesh P. Nair
*/
#ifndef __LISTFORMATTER_H__
#define __LISTFORMATTER_H__
#include "unicode/unistr.h"
#include "unicode/locid.h"
U_NAMESPACE_BEGIN
/** @internal */
class Hashtable;
/** @internal */
struct ListFormatData : public UMemory {
UnicodeString twoPattern;
UnicodeString startPattern;
UnicodeString middlePattern;
UnicodeString endPattern;
ListFormatData(const UnicodeString& two, const UnicodeString& start, const UnicodeString& middle, const UnicodeString& end) :
twoPattern(two), startPattern(start), middlePattern(middle), endPattern(end) {}
};
/**
* \file
* \brief C++ API: API for formatting a list.
*/
/**
* An immutable class for formatting a list, using data from CLDR (or supplied
* separately).
*
* Example: Input data ["Alice", "Bob", "Charlie", "Delta"] will be formatted
* as "Alice, Bob, Charlie and Delta" in English.
*
* The ListFormatter class is not intended for public subclassing.
*/
class U_COMMON_API ListFormatter : public UObject{
public:
/**
* Creates a ListFormatter appropriate for the default locale.
*
* @param errorCode ICU error code, set if no data available for default locale.
* @return Pointer to a ListFormatter object for the default locale,
* created from internal data derived from CLDR data.
* @draft ICU 50
*/
static ListFormatter* createInstance(UErrorCode& errorCode);
/**
* Creates a ListFormatter appropriate for a locale.
*
* @param locale The locale.
* @param errorCode ICU error code, set if no data available for the given locale.
* @return A ListFormatter object created from internal data derived from
* CLDR data.
* @draft ICU 50
*/
static ListFormatter* createInstance(const Locale& locale, UErrorCode& errorCode);
/**
* Destructor.
*
* @draft ICU 50
*/
virtual ~ListFormatter();
/**
* Formats a list of strings.
*
* @param items An array of strings to be combined and formatted.
* @param n_items Length of the array items.
* @param appendTo The string to which the result should be appended to.
* @param errorCode ICU error code, set if there is an error.
* @return Formatted string combining the elements of items, appended to appendTo.
* @draft ICU 50
*/
UnicodeString& format(const UnicodeString items[], int32_t n_items,
UnicodeString& appendTo, UErrorCode& errorCode) const;
/**
* Gets the fallback locale for a given locale.
* TODO: Consider moving this to the Locale class.
* @param in The input locale.
* @param out The output locale after fallback.
* @internal For testing.
*/
static void getFallbackLocale(const Locale& in, Locale& out, UErrorCode& errorCode);
/**
* @internal constructor made public for testing.
*/
ListFormatter(const ListFormatData& listFormatterData);
private:
static void initializeHash(UErrorCode& errorCode);
static void addDataToHash(const char* locale, const char* two, const char* start, const char* middle, const char* end, UErrorCode& errorCode);
static const ListFormatData* getListFormatData(const Locale& locale, UErrorCode& errorCode);
ListFormatter();
ListFormatter(const ListFormatter&);
ListFormatter& operator = (const ListFormatter&);
void addNewString(const UnicodeString& pattern, UnicodeString& originalString,
const UnicodeString& newString, UErrorCode& errorCode) const;
virtual UClassID getDynamicClassID() const;
const ListFormatData& data;
};
U_NAMESPACE_END
#endif