chromium/third_party/icu/source/common/localematcher.cpp

// © 2019 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

// localematcher.cpp
// created: 2019may08 Markus W. Scherer

#include "unicode/utypes.h"
#include "unicode/localebuilder.h"
#include "unicode/localematcher.h"
#include "unicode/locid.h"
#include "unicode/stringpiece.h"
#include "unicode/uloc.h"
#include "unicode/uobject.h"
#include "cstring.h"
#include "localeprioritylist.h"
#include "loclikelysubtags.h"
#include "locdistance.h"
#include "lsr.h"
#include "uassert.h"
#include "uhash.h"
#include "ustr_imp.h"
#include "uvector.h"

#define UND_LSR …

/**
 * Indicator for the lifetime of desired-locale objects passed into the LocaleMatcher.
 *
 * @draft ICU 65
 */
enum ULocMatchLifetime { … };
#ifndef U_IN_DOXYGEN
ULocMatchLifetime;
#endif

U_NAMESPACE_BEGIN

LocaleMatcher::Result::Result(LocaleMatcher::Result &&src) noexcept : … { … }

LocaleMatcher::Result::~Result() { … }

LocaleMatcher::Result &LocaleMatcher::Result::operator=(LocaleMatcher::Result &&src) noexcept { … }

Locale LocaleMatcher::Result::makeResolvedLocale(UErrorCode &errorCode) const { … }

LocaleMatcher::Builder::Builder(LocaleMatcher::Builder &&src) noexcept : … { … }

LocaleMatcher::Builder::~Builder() { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::operator=(LocaleMatcher::Builder &&src) noexcept { … }

void LocaleMatcher::Builder::clearSupportedLocales() { … }

bool LocaleMatcher::Builder::ensureSupportedLocaleVector() { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setSupportedLocalesFromListString(
        StringPiece locales) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setSupportedLocales(Locale::Iterator &locales) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::addSupportedLocale(const Locale &locale) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setNoDefaultLocale() { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setDefaultLocale(const Locale *defaultLocale) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setFavorSubtag(ULocMatchFavorSubtag subtag) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setDemotionPerDesiredLocale(ULocMatchDemotion demotion) { … }

LocaleMatcher::Builder &LocaleMatcher::Builder::setMaxDistance(const Locale &desired,
                                                               const Locale &supported) { … }

#if 0
/**
 * <i>Internal only!</i>
 *
 * @param thresholdDistance the thresholdDistance to set, with -1 = default
 * @return this Builder object
 * @internal
 * @deprecated This API is ICU internal only.
 */
@Deprecated
LocaleMatcher::Builder &LocaleMatcher::Builder::internalSetThresholdDistance(int32_t thresholdDistance) {
    if (U_FAILURE(errorCode_)) { return *this; }
    if (thresholdDistance > 100) {
        thresholdDistance = 100;
    }
    thresholdDistance_ = thresholdDistance;
    return *this;
}
#endif

UBool LocaleMatcher::Builder::copyErrorTo(UErrorCode &outErrorCode) const { … }

LocaleMatcher LocaleMatcher::Builder::build(UErrorCode &errorCode) const { … }

namespace {

LSR getMaximalLsrOrUnd(const XLikelySubtags &likelySubtags, const Locale &locale,
                       UErrorCode &errorCode) { … }

int32_t hashLSR(const UHashTok token) { … }

UBool compareLSRs(const UHashTok t1, const UHashTok t2) { … }

}  // namespace

int32_t LocaleMatcher::putIfAbsent(const LSR &lsr, int32_t i, int32_t suppLength,
                                   UErrorCode &errorCode) { … }

LocaleMatcher::LocaleMatcher(const Builder &builder, UErrorCode &errorCode) : … { … }

LocaleMatcher::LocaleMatcher(LocaleMatcher &&src) noexcept : … { … }

LocaleMatcher::~LocaleMatcher() { … }

LocaleMatcher &LocaleMatcher::operator=(LocaleMatcher &&src) noexcept { … }

class LocaleLsrIterator { … };

const Locale *LocaleMatcher::getBestMatch(const Locale &desiredLocale, UErrorCode &errorCode) const { … }

const Locale *LocaleMatcher::getBestMatch(Locale::Iterator &desiredLocales,
                                          UErrorCode &errorCode) const { … }

const Locale *LocaleMatcher::getBestMatchForListString(
        StringPiece desiredLocaleList, UErrorCode &errorCode) const { … }

LocaleMatcher::Result LocaleMatcher::getBestMatchResult(
        const Locale &desiredLocale, UErrorCode &errorCode) const { … }

LocaleMatcher::Result LocaleMatcher::getBestMatchResult(
        Locale::Iterator &desiredLocales, UErrorCode &errorCode) const { … }

int32_t LocaleMatcher::getBestSuppIndex(LSR desiredLSR, LocaleLsrIterator *remainingIter,
                                        UErrorCode &errorCode) const { … }

UBool LocaleMatcher::isMatch(const Locale &desired, const Locale &supported,
                             UErrorCode &errorCode) const { … }

double LocaleMatcher::internalMatch(const Locale &desired, const Locale &supported, UErrorCode &errorCode) const { … }

U_NAMESPACE_END

// uloc_acceptLanguage() --------------------------------------------------- ***

U_NAMESPACE_USE

namespace {

class LocaleFromTag { … };

int32_t acceptLanguage(UEnumeration &supportedLocales, Locale::Iterator &desiredLocales,
                       char *dest, int32_t capacity, UAcceptResult *acceptResult,
                       UErrorCode &errorCode) { … }

}  // namespace

U_CAPI int32_t U_EXPORT2
uloc_acceptLanguage(char *result, int32_t resultAvailable,
                    UAcceptResult *outResult,
                    const char **acceptList, int32_t acceptListCount,
                    UEnumeration *availableLocales,
                    UErrorCode *status) { … }

U_CAPI int32_t U_EXPORT2
uloc_acceptLanguageFromHTTP(char *result, int32_t resultAvailable,
                            UAcceptResult *outResult,
                            const char *httpAcceptLanguage,
                            UEnumeration *availableLocales,
                            UErrorCode *status) { … }