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