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d814742408
Update to ICU 70.1 by running "update-icu.sh" with "maint/maint-70" as the target. Differential Revision: https://phabricator.services.mozilla.com/D129924
608 lines
20 KiB
C++
608 lines
20 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) 2009-2015, International Business Machines Corporation and
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* others. All Rights Reserved.
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*******************************************************************************
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*
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* File PLURFMT.CPP
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*******************************************************************************
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*/
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#include "unicode/decimfmt.h"
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#include "unicode/messagepattern.h"
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#include "unicode/plurfmt.h"
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#include "unicode/plurrule.h"
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#include "unicode/utypes.h"
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#include "cmemory.h"
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#include "messageimpl.h"
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#include "nfrule.h"
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#include "plurrule_impl.h"
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#include "uassert.h"
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#include "uhash.h"
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#include "number_decimalquantity.h"
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#include "number_utils.h"
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#include "number_utypes.h"
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#if !UCONFIG_NO_FORMATTING
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U_NAMESPACE_BEGIN
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using number::impl::DecimalQuantity;
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static const UChar OTHER_STRING[] = {
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0x6F, 0x74, 0x68, 0x65, 0x72, 0 // "other"
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};
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(PluralFormat)
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PluralFormat::PluralFormat(UErrorCode& status)
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: locale(Locale::getDefault()),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, UPLURAL_TYPE_CARDINAL, status);
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}
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PluralFormat::PluralFormat(const Locale& loc, UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, UPLURAL_TYPE_CARDINAL, status);
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}
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PluralFormat::PluralFormat(const PluralRules& rules, UErrorCode& status)
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: locale(Locale::getDefault()),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(&rules, UPLURAL_TYPE_COUNT, status);
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}
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PluralFormat::PluralFormat(const Locale& loc,
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const PluralRules& rules,
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UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(&rules, UPLURAL_TYPE_COUNT, status);
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}
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PluralFormat::PluralFormat(const Locale& loc,
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UPluralType type,
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UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, type, status);
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}
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PluralFormat::PluralFormat(const UnicodeString& pat,
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UErrorCode& status)
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: locale(Locale::getDefault()),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, UPLURAL_TYPE_CARDINAL, status);
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applyPattern(pat, status);
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}
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PluralFormat::PluralFormat(const Locale& loc,
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const UnicodeString& pat,
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UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, UPLURAL_TYPE_CARDINAL, status);
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applyPattern(pat, status);
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}
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PluralFormat::PluralFormat(const PluralRules& rules,
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const UnicodeString& pat,
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UErrorCode& status)
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: locale(Locale::getDefault()),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(&rules, UPLURAL_TYPE_COUNT, status);
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applyPattern(pat, status);
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}
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PluralFormat::PluralFormat(const Locale& loc,
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const PluralRules& rules,
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const UnicodeString& pat,
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UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(&rules, UPLURAL_TYPE_COUNT, status);
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applyPattern(pat, status);
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}
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PluralFormat::PluralFormat(const Locale& loc,
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UPluralType type,
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const UnicodeString& pat,
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UErrorCode& status)
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: locale(loc),
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msgPattern(status),
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numberFormat(NULL),
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offset(0) {
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init(NULL, type, status);
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applyPattern(pat, status);
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}
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PluralFormat::PluralFormat(const PluralFormat& other)
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: Format(other),
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locale(other.locale),
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msgPattern(other.msgPattern),
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numberFormat(NULL),
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offset(other.offset) {
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copyObjects(other);
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}
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void
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PluralFormat::copyObjects(const PluralFormat& other) {
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UErrorCode status = U_ZERO_ERROR;
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if (numberFormat != NULL) {
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delete numberFormat;
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}
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if (pluralRulesWrapper.pluralRules != NULL) {
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delete pluralRulesWrapper.pluralRules;
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}
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if (other.numberFormat == NULL) {
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numberFormat = NumberFormat::createInstance(locale, status);
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} else {
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numberFormat = other.numberFormat->clone();
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}
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if (other.pluralRulesWrapper.pluralRules == NULL) {
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pluralRulesWrapper.pluralRules = PluralRules::forLocale(locale, status);
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} else {
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pluralRulesWrapper.pluralRules = other.pluralRulesWrapper.pluralRules->clone();
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}
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}
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PluralFormat::~PluralFormat() {
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delete numberFormat;
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}
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void
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PluralFormat::init(const PluralRules* rules, UPluralType type, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return;
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}
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if (rules==NULL) {
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pluralRulesWrapper.pluralRules = PluralRules::forLocale(locale, type, status);
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} else {
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pluralRulesWrapper.pluralRules = rules->clone();
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if (pluralRulesWrapper.pluralRules == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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}
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numberFormat= NumberFormat::createInstance(locale, status);
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}
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void
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PluralFormat::applyPattern(const UnicodeString& newPattern, UErrorCode& status) {
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msgPattern.parsePluralStyle(newPattern, NULL, status);
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if (U_FAILURE(status)) {
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msgPattern.clear();
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offset = 0;
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return;
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}
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offset = msgPattern.getPluralOffset(0);
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}
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UnicodeString&
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PluralFormat::format(const Formattable& obj,
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UnicodeString& appendTo,
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FieldPosition& pos,
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UErrorCode& status) const
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{
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if (U_FAILURE(status)) return appendTo;
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if (obj.isNumeric()) {
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return format(obj, obj.getDouble(), appendTo, pos, status);
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} else {
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return appendTo;
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}
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}
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UnicodeString
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PluralFormat::format(int32_t number, UErrorCode& status) const {
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FieldPosition fpos(FieldPosition::DONT_CARE);
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UnicodeString result;
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return format(Formattable(number), number, result, fpos, status);
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}
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UnicodeString
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PluralFormat::format(double number, UErrorCode& status) const {
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FieldPosition fpos(FieldPosition::DONT_CARE);
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UnicodeString result;
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return format(Formattable(number), number, result, fpos, status);
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}
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UnicodeString&
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PluralFormat::format(int32_t number,
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UnicodeString& appendTo,
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FieldPosition& pos,
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UErrorCode& status) const {
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return format(Formattable(number), (double)number, appendTo, pos, status);
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}
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UnicodeString&
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PluralFormat::format(double number,
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UnicodeString& appendTo,
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FieldPosition& pos,
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UErrorCode& status) const {
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return format(Formattable(number), (double)number, appendTo, pos, status);
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}
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UnicodeString&
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PluralFormat::format(const Formattable& numberObject, double number,
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UnicodeString& appendTo,
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FieldPosition& pos,
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UErrorCode& status) const {
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if (U_FAILURE(status)) {
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return appendTo;
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}
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if (msgPattern.countParts() == 0) {
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return numberFormat->format(numberObject, appendTo, pos, status);
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}
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// Get the appropriate sub-message.
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// Select it based on the formatted number-offset.
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double numberMinusOffset = number - offset;
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// Call NumberFormatter to get both the DecimalQuantity and the string.
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// This call site needs to use more internal APIs than the Java equivalent.
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number::impl::UFormattedNumberData data;
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if (offset == 0) {
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// could be BigDecimal etc.
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numberObject.populateDecimalQuantity(data.quantity, status);
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} else {
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data.quantity.setToDouble(numberMinusOffset);
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}
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UnicodeString numberString;
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auto *decFmt = dynamic_cast<DecimalFormat *>(numberFormat);
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if(decFmt != nullptr) {
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const number::LocalizedNumberFormatter* lnf = decFmt->toNumberFormatter(status);
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if (U_FAILURE(status)) {
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return appendTo;
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}
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lnf->formatImpl(&data, status); // mutates &data
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if (U_FAILURE(status)) {
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return appendTo;
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}
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numberString = data.getStringRef().toUnicodeString();
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} else {
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if (offset == 0) {
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numberFormat->format(numberObject, numberString, status);
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} else {
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numberFormat->format(numberMinusOffset, numberString, status);
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}
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}
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int32_t partIndex = findSubMessage(msgPattern, 0, pluralRulesWrapper, &data.quantity, number, status);
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if (U_FAILURE(status)) { return appendTo; }
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// Replace syntactic # signs in the top level of this sub-message
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// (not in nested arguments) with the formatted number-offset.
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const UnicodeString& pattern = msgPattern.getPatternString();
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int32_t prevIndex = msgPattern.getPart(partIndex).getLimit();
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for (;;) {
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const MessagePattern::Part& part = msgPattern.getPart(++partIndex);
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const UMessagePatternPartType type = part.getType();
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int32_t index = part.getIndex();
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if (type == UMSGPAT_PART_TYPE_MSG_LIMIT) {
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return appendTo.append(pattern, prevIndex, index - prevIndex);
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} else if ((type == UMSGPAT_PART_TYPE_REPLACE_NUMBER) ||
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(type == UMSGPAT_PART_TYPE_SKIP_SYNTAX && MessageImpl::jdkAposMode(msgPattern))) {
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appendTo.append(pattern, prevIndex, index - prevIndex);
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if (type == UMSGPAT_PART_TYPE_REPLACE_NUMBER) {
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appendTo.append(numberString);
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}
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prevIndex = part.getLimit();
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} else if (type == UMSGPAT_PART_TYPE_ARG_START) {
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appendTo.append(pattern, prevIndex, index - prevIndex);
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prevIndex = index;
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partIndex = msgPattern.getLimitPartIndex(partIndex);
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index = msgPattern.getPart(partIndex).getLimit();
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MessageImpl::appendReducedApostrophes(pattern, prevIndex, index, appendTo);
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prevIndex = index;
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}
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}
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}
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UnicodeString&
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PluralFormat::toPattern(UnicodeString& appendTo) {
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if (0 == msgPattern.countParts()) {
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appendTo.setToBogus();
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} else {
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appendTo.append(msgPattern.getPatternString());
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}
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return appendTo;
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}
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void
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PluralFormat::setLocale(const Locale& loc, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return;
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}
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locale = loc;
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msgPattern.clear();
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delete numberFormat;
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offset = 0;
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numberFormat = NULL;
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pluralRulesWrapper.reset();
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init(NULL, UPLURAL_TYPE_CARDINAL, status);
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}
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void
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PluralFormat::setNumberFormat(const NumberFormat* format, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return;
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}
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NumberFormat* nf = format->clone();
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if (nf != NULL) {
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delete numberFormat;
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numberFormat = nf;
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} else {
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status = U_MEMORY_ALLOCATION_ERROR;
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}
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}
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PluralFormat*
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PluralFormat::clone() const
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{
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return new PluralFormat(*this);
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}
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PluralFormat&
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PluralFormat::operator=(const PluralFormat& other) {
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if (this != &other) {
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locale = other.locale;
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msgPattern = other.msgPattern;
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offset = other.offset;
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copyObjects(other);
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}
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return *this;
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}
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bool
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PluralFormat::operator==(const Format& other) const {
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if (this == &other) {
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return true;
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}
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if (!Format::operator==(other)) {
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return false;
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}
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const PluralFormat& o = (const PluralFormat&)other;
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return
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locale == o.locale &&
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msgPattern == o.msgPattern && // implies same offset
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(numberFormat == NULL) == (o.numberFormat == NULL) &&
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(numberFormat == NULL || *numberFormat == *o.numberFormat) &&
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(pluralRulesWrapper.pluralRules == NULL) == (o.pluralRulesWrapper.pluralRules == NULL) &&
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(pluralRulesWrapper.pluralRules == NULL ||
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*pluralRulesWrapper.pluralRules == *o.pluralRulesWrapper.pluralRules);
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}
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bool
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PluralFormat::operator!=(const Format& other) const {
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return !operator==(other);
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}
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void
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PluralFormat::parseObject(const UnicodeString& /*source*/,
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Formattable& /*result*/,
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ParsePosition& pos) const
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{
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// Parsing not supported.
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pos.setErrorIndex(pos.getIndex());
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}
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int32_t PluralFormat::findSubMessage(const MessagePattern& pattern, int32_t partIndex,
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const PluralSelector& selector, void *context,
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double number, UErrorCode& ec) {
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if (U_FAILURE(ec)) {
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return 0;
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}
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int32_t count=pattern.countParts();
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double offset;
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const MessagePattern::Part* part=&pattern.getPart(partIndex);
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if (MessagePattern::Part::hasNumericValue(part->getType())) {
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offset=pattern.getNumericValue(*part);
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++partIndex;
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} else {
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offset=0;
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}
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// The keyword is empty until we need to match against a non-explicit, not-"other" value.
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// Then we get the keyword from the selector.
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// (In other words, we never call the selector if we match against an explicit value,
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// or if the only non-explicit keyword is "other".)
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UnicodeString keyword;
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UnicodeString other(FALSE, OTHER_STRING, 5);
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// When we find a match, we set msgStart>0 and also set this boolean to true
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// to avoid matching the keyword again (duplicates are allowed)
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// while we continue to look for an explicit-value match.
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UBool haveKeywordMatch=FALSE;
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// msgStart is 0 until we find any appropriate sub-message.
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// We remember the first "other" sub-message if we have not seen any
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// appropriate sub-message before.
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// We remember the first matching-keyword sub-message if we have not seen
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// one of those before.
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// (The parser allows [does not check for] duplicate keywords.
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// We just have to make sure to take the first one.)
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// We avoid matching the keyword twice by also setting haveKeywordMatch=true
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// at the first keyword match.
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// We keep going until we find an explicit-value match or reach the end of the plural style.
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int32_t msgStart=0;
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// Iterate over (ARG_SELECTOR [ARG_INT|ARG_DOUBLE] message) tuples
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// until ARG_LIMIT or end of plural-only pattern.
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do {
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part=&pattern.getPart(partIndex++);
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const UMessagePatternPartType type = part->getType();
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if(type==UMSGPAT_PART_TYPE_ARG_LIMIT) {
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break;
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}
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U_ASSERT (type==UMSGPAT_PART_TYPE_ARG_SELECTOR);
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// part is an ARG_SELECTOR followed by an optional explicit value, and then a message
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if(MessagePattern::Part::hasNumericValue(pattern.getPartType(partIndex))) {
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// explicit value like "=2"
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part=&pattern.getPart(partIndex++);
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if(number==pattern.getNumericValue(*part)) {
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// matches explicit value
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return partIndex;
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}
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} else if(!haveKeywordMatch) {
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// plural keyword like "few" or "other"
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// Compare "other" first and call the selector if this is not "other".
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if(pattern.partSubstringMatches(*part, other)) {
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if(msgStart==0) {
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msgStart=partIndex;
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if(0 == keyword.compare(other)) {
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// This is the first "other" sub-message,
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// and the selected keyword is also "other".
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// Do not match "other" again.
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haveKeywordMatch=TRUE;
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}
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}
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} else {
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if(keyword.isEmpty()) {
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keyword=selector.select(context, number-offset, ec);
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if(msgStart!=0 && (0 == keyword.compare(other))) {
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// We have already seen an "other" sub-message.
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// Do not match "other" again.
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haveKeywordMatch=TRUE;
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// Skip keyword matching but do getLimitPartIndex().
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}
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}
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if(!haveKeywordMatch && pattern.partSubstringMatches(*part, keyword)) {
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// keyword matches
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msgStart=partIndex;
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// Do not match this keyword again.
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haveKeywordMatch=TRUE;
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}
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}
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}
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partIndex=pattern.getLimitPartIndex(partIndex);
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} while(++partIndex<count);
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return msgStart;
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}
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void PluralFormat::parseType(const UnicodeString& source, const NFRule *rbnfLenientScanner, Formattable& result, FieldPosition& pos) const {
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// If no pattern was applied, return null.
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if (msgPattern.countParts() == 0) {
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pos.setBeginIndex(-1);
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pos.setEndIndex(-1);
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return;
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}
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int partIndex = 0;
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int currMatchIndex;
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int count=msgPattern.countParts();
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int startingAt = pos.getBeginIndex();
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if (startingAt < 0) {
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startingAt = 0;
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}
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// The keyword is null until we need to match against a non-explicit, not-"other" value.
|
|
// Then we get the keyword from the selector.
|
|
// (In other words, we never call the selector if we match against an explicit value,
|
|
// or if the only non-explicit keyword is "other".)
|
|
UnicodeString keyword;
|
|
UnicodeString matchedWord;
|
|
const UnicodeString& pattern = msgPattern.getPatternString();
|
|
int matchedIndex = -1;
|
|
// Iterate over (ARG_SELECTOR ARG_START message ARG_LIMIT) tuples
|
|
// until the end of the plural-only pattern.
|
|
while (partIndex < count) {
|
|
const MessagePattern::Part* partSelector = &msgPattern.getPart(partIndex++);
|
|
if (partSelector->getType() != UMSGPAT_PART_TYPE_ARG_SELECTOR) {
|
|
// Bad format
|
|
continue;
|
|
}
|
|
|
|
const MessagePattern::Part* partStart = &msgPattern.getPart(partIndex++);
|
|
if (partStart->getType() != UMSGPAT_PART_TYPE_MSG_START) {
|
|
// Bad format
|
|
continue;
|
|
}
|
|
|
|
const MessagePattern::Part* partLimit = &msgPattern.getPart(partIndex++);
|
|
if (partLimit->getType() != UMSGPAT_PART_TYPE_MSG_LIMIT) {
|
|
// Bad format
|
|
continue;
|
|
}
|
|
|
|
UnicodeString currArg = pattern.tempSubString(partStart->getLimit(), partLimit->getIndex() - partStart->getLimit());
|
|
if (rbnfLenientScanner != NULL) {
|
|
// Check if non-lenient rule finds the text before call lenient parsing
|
|
int32_t tempIndex = source.indexOf(currArg, startingAt);
|
|
if (tempIndex >= 0) {
|
|
currMatchIndex = tempIndex;
|
|
} else {
|
|
// If lenient parsing is turned ON, we've got some time consuming parsing ahead of us.
|
|
int32_t length = -1;
|
|
currMatchIndex = rbnfLenientScanner->findTextLenient(source, currArg, startingAt, &length);
|
|
}
|
|
}
|
|
else {
|
|
currMatchIndex = source.indexOf(currArg, startingAt);
|
|
}
|
|
if (currMatchIndex >= 0 && currMatchIndex >= matchedIndex && currArg.length() > matchedWord.length()) {
|
|
matchedIndex = currMatchIndex;
|
|
matchedWord = currArg;
|
|
keyword = pattern.tempSubString(partStart->getLimit(), partLimit->getIndex() - partStart->getLimit());
|
|
}
|
|
}
|
|
if (matchedIndex >= 0) {
|
|
pos.setBeginIndex(matchedIndex);
|
|
pos.setEndIndex(matchedIndex + matchedWord.length());
|
|
result.setString(keyword);
|
|
return;
|
|
}
|
|
|
|
// Not found!
|
|
pos.setBeginIndex(-1);
|
|
pos.setEndIndex(-1);
|
|
}
|
|
|
|
PluralFormat::PluralSelector::~PluralSelector() {}
|
|
|
|
PluralFormat::PluralSelectorAdapter::~PluralSelectorAdapter() {
|
|
delete pluralRules;
|
|
}
|
|
|
|
UnicodeString PluralFormat::PluralSelectorAdapter::select(void *context, double number,
|
|
UErrorCode& /*ec*/) const {
|
|
(void)number; // unused except in the assertion
|
|
IFixedDecimal *dec=static_cast<IFixedDecimal *>(context);
|
|
return pluralRules->select(*dec);
|
|
}
|
|
|
|
void PluralFormat::PluralSelectorAdapter::reset() {
|
|
delete pluralRules;
|
|
pluralRules = NULL;
|
|
}
|
|
|
|
|
|
U_NAMESPACE_END
|
|
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
//eof
|