chromium/third_party/icu/source/i18n/units_data.cpp

// © 2020 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "bytesinkutil.h"
#include "cstring.h"
#include "measunit_impl.h"
#include "number_decimalquantity.h"
#include "resource.h"
#include "uassert.h"
#include "ulocimp.h"
#include "unicode/locid.h"
#include "unicode/unistr.h"
#include "unicode/ures.h"
#include "units_data.h"
#include "uresimp.h"
#include "util.h"
#include <utility>

U_NAMESPACE_BEGIN
namespace units {

namespace {

DecimalQuantity;

void trimSpaces(CharString& factor, UErrorCode& status){ … }

/**
 * A ResourceSink that collects conversion rate information.
 *
 * This class is for use by ures_getAllItemsWithFallback.
 */
class ConversionRateDataSink : public ResourceSink { … };

bool operator<(const UnitPreferenceMetadata &a, const UnitPreferenceMetadata &b) { … }

/**
 * A ResourceSink that collects unit preferences information.
 *
 * This class is for use by ures_getAllItemsWithFallback.
 */
class UnitPreferencesSink : public ResourceSink { … };

int32_t binarySearch(const MaybeStackVector<UnitPreferenceMetadata> *metadata,
                     const UnitPreferenceMetadata &desired, bool *foundCategory, bool *foundUsage,
                     bool *foundRegion, UErrorCode &status) { … }

/**
 * Finds the UnitPreferenceMetadata instance that matches the given category,
 * usage and region: if missing, region falls back to "001", and usage
 * repeatedly drops tailing components, eventually trying "default"
 * ("land-agriculture-grain" -> "land-agriculture" -> "land" -> "default").
 *
 * @param metadata The full list of UnitPreferenceMetadata instances.
 * @param category The category to search for. See getUnitCategory().
 * @param usage The usage for which formatting preferences is needed. If the
 * given usage is not known, automatic fallback occurs, see function description
 * above.
 * @param region The region for which preferences are needed. If there are no
 * region-specific preferences, this function automatically falls back to the
 * "001" region (global).
 * @param status The standard ICU error code output parameter.
 *   * If an invalid category is given, status will be U_ILLEGAL_ARGUMENT_ERROR.
 *   * If fallback to "default" or "001" didn't resolve, status will be
 *     U_MISSING_RESOURCE.
 * @return The index into the metadata vector which represents the appropriate
 * preferences. If appropriate preferences are not found, -1 is returned.
 */
int32_t getPreferenceMetadataIndex(const MaybeStackVector<UnitPreferenceMetadata> *metadata,
                                   StringPiece category, StringPiece usage, StringPiece region,
                                   UErrorCode &status) { … }

} // namespace

UnitPreferenceMetadata::UnitPreferenceMetadata(StringPiece category, StringPiece usage,
                                               StringPiece region, int32_t prefsOffset,
                                               int32_t prefsCount, UErrorCode &status) { … }

int32_t UnitPreferenceMetadata::compareTo(const UnitPreferenceMetadata &other) const { … }

int32_t UnitPreferenceMetadata::compareTo(const UnitPreferenceMetadata &other, bool *foundCategory,
                                          bool *foundUsage, bool *foundRegion) const { … }

// TODO: this may be unnecessary. Fold into ConversionRates class? Or move to anonymous namespace?
void U_I18N_API getAllConversionRates(MaybeStackVector<ConversionRateInfo> &result, UErrorCode &status) { … }

const ConversionRateInfo *ConversionRates::extractConversionInfo(StringPiece source,
                                                                 UErrorCode &status) const { … }

U_I18N_API UnitPreferences::UnitPreferences(UErrorCode &status) { … }

CharString getKeyWordValue(const Locale &locale, StringPiece kw, UErrorCode &status) { … }

MaybeStackVector<UnitPreference>
    U_I18N_API UnitPreferences::getPreferencesFor(StringPiece category, StringPiece usage,
                                                  const Locale &locale, UErrorCode &status) const { … }

} // namespace units
U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */