120 lines
4.1 KiB
C++
120 lines
4.1 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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**********************************************************************
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* Copyright (c) 2004-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* Author: Alan Liu
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* Created: January 16 2004
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* Since: ICU 2.8
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**********************************************************************
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*/
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#ifndef LOCBASED_H
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#define LOCBASED_H
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#include "unicode/locid.h"
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#include "unicode/uobject.h"
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/**
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* Macro to declare a locale LocaleBased wrapper object for the given
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* object, which must have two members named `validLocale' and
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* `actualLocale' of which are pointers to the internal icu::CharString.
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*/
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#define U_LOCALE_BASED(varname, objname) \
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LocaleBased varname((objname).validLocale, (objname).actualLocale)
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U_NAMESPACE_BEGIN
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class CharString;
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/**
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* A utility class that unifies the implementation of getLocale() by
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* various ICU services. This class is likely to be removed in the
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* ICU 3.0 time frame in favor of an integrated approach with the
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* services framework.
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* @since ICU 2.8
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*/
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class U_COMMON_API LocaleBased : public UMemory {
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public:
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/**
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* Construct a LocaleBased wrapper around the two pointers. These
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* will be aliased for the lifetime of this object.
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*/
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inline LocaleBased(CharString*& validAlias, CharString*& actualAlias);
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/**
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* Return locale meta-data for the service object wrapped by this
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* object. Either the valid or the actual locale may be
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* retrieved.
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* @param valid The valid locale.
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* @param actual The actual locale.
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* @param type either ULOC_VALID_LOCALE or ULOC_ACTUAL_LOCALE
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* @param status input-output error code
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* @return the indicated locale
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*/
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static Locale getLocale(
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const CharString* valid, const CharString* actual,
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ULocDataLocaleType type, UErrorCode& status);
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/**
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* Return the locale ID for the service object wrapped by this
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* object. Either the valid or the actual locale may be
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* retrieved.
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* @param valid The valid locale.
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* @param actual The actual locale.
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* @param type either ULOC_VALID_LOCALE or ULOC_ACTUAL_LOCALE
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* @param status input-output error code
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* @return the indicated locale ID
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*/
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static const char* getLocaleID(
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const CharString* valid, const CharString* actual,
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ULocDataLocaleType type, UErrorCode& status);
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/**
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* Set the locale meta-data for the service object wrapped by this
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* object. If either parameter is zero, it is ignored.
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* @param valid the ID of the valid locale
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* @param actual the ID of the actual locale
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*/
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void setLocaleIDs(const char* valid, const char* actual, UErrorCode& status);
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void setLocaleIDs(const CharString* valid, const CharString* actual, UErrorCode& status);
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static void setLocaleID(const char* id, CharString*& dest, UErrorCode& status);
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static void setLocaleID(const CharString* id, CharString*& dest, UErrorCode& status);
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static bool equalIDs(const CharString* left, const CharString* right);
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private:
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void setValidLocaleID(const CharString* id, UErrorCode& status);
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void setActualLocaleID(const CharString* id, UErrorCode& status);
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void setValidLocaleID(const char* id, UErrorCode& status);
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void setActualLocaleID(const char* id, UErrorCode& status);
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CharString*& valid;
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CharString*& actual;
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};
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inline LocaleBased::LocaleBased(CharString*& validAlias, CharString*& actualAlias) :
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valid(validAlias), actual(actualAlias) {
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}
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inline void LocaleBased::setValidLocaleID(const CharString* id, UErrorCode& status) {
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setLocaleID(id, valid, status);
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}
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inline void LocaleBased::setActualLocaleID(const CharString* id, UErrorCode& status) {
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setLocaleID(id, actual, status);
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}
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inline void LocaleBased::setValidLocaleID(const char* id, UErrorCode& status) {
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setLocaleID(id, valid, status);
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}
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inline void LocaleBased::setActualLocaleID(const char* id, UErrorCode& status) {
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setLocaleID(id, actual, status);
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}
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U_NAMESPACE_END
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#endif
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