297 lines
11 KiB
C++
297 lines
11 KiB
C++
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/i18n/time_formatting.h"
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#include <stddef.h>
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#include <memory>
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#include "base/i18n/unicodestring.h"
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#include "base/logging.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/time/time.h"
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#include "third_party/icu/source/common/unicode/utypes.h"
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#include "third_party/icu/source/i18n/unicode/datefmt.h"
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#include "third_party/icu/source/i18n/unicode/dtitvfmt.h"
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#include "third_party/icu/source/i18n/unicode/dtptngen.h"
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#include "third_party/icu/source/i18n/unicode/fmtable.h"
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#include "third_party/icu/source/i18n/unicode/measfmt.h"
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#include "third_party/icu/source/i18n/unicode/smpdtfmt.h"
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namespace base {
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namespace {
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string16 TimeFormat(const icu::DateFormat* formatter,
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const Time& time) {
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DCHECK(formatter);
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icu::UnicodeString date_string;
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formatter->format(static_cast<UDate>(time.ToDoubleT() * 1000), date_string);
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return i18n::UnicodeStringToString16(date_string);
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}
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string16 TimeFormatWithoutAmPm(const icu::DateFormat* formatter,
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const Time& time) {
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DCHECK(formatter);
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icu::UnicodeString time_string;
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icu::FieldPosition ampm_field(icu::DateFormat::kAmPmField);
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formatter->format(
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static_cast<UDate>(time.ToDoubleT() * 1000), time_string, ampm_field);
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int ampm_length = ampm_field.getEndIndex() - ampm_field.getBeginIndex();
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if (ampm_length) {
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int begin = ampm_field.getBeginIndex();
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// Doesn't include any spacing before the field.
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if (begin)
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begin--;
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time_string.removeBetween(begin, ampm_field.getEndIndex());
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}
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return i18n::UnicodeStringToString16(time_string);
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}
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icu::SimpleDateFormat CreateSimpleDateFormatter(const char* pattern) {
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// Generate a locale-dependent format pattern. The generator will take
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// care of locale-dependent formatting issues like which separator to
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// use (some locales use '.' instead of ':'), and where to put the am/pm
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// marker.
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UErrorCode status = U_ZERO_ERROR;
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std::unique_ptr<icu::DateTimePatternGenerator> generator(
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icu::DateTimePatternGenerator::createInstance(status));
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DCHECK(U_SUCCESS(status));
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icu::UnicodeString generated_pattern =
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generator->getBestPattern(icu::UnicodeString(pattern), status);
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DCHECK(U_SUCCESS(status));
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// Then, format the time using the generated pattern.
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icu::SimpleDateFormat formatter(generated_pattern, status);
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DCHECK(U_SUCCESS(status));
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return formatter;
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}
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UMeasureFormatWidth DurationWidthToMeasureWidth(DurationFormatWidth width) {
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switch (width) {
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case DURATION_WIDTH_WIDE: return UMEASFMT_WIDTH_WIDE;
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case DURATION_WIDTH_SHORT: return UMEASFMT_WIDTH_SHORT;
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case DURATION_WIDTH_NARROW: return UMEASFMT_WIDTH_NARROW;
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case DURATION_WIDTH_NUMERIC: return UMEASFMT_WIDTH_NUMERIC;
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}
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NOTREACHED();
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return UMEASFMT_WIDTH_COUNT;
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}
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const char* DateFormatToString(DateFormat format) {
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switch (format) {
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case DATE_FORMAT_YEAR_MONTH:
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return UDAT_YEAR_MONTH;
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case DATE_FORMAT_MONTH_WEEKDAY_DAY:
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return UDAT_MONTH_WEEKDAY_DAY;
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}
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NOTREACHED();
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return UDAT_YEAR_MONTH_DAY;
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}
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} // namespace
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string16 TimeFormatTimeOfDay(const Time& time) {
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// We can omit the locale parameter because the default should match
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// Chrome's application locale.
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createTimeInstance(icu::DateFormat::kShort));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatTimeOfDayWithMilliseconds(const Time& time) {
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icu::SimpleDateFormat formatter = CreateSimpleDateFormatter("HmsSSS");
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return TimeFormatWithoutAmPm(&formatter, time);
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}
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string16 TimeFormatTimeOfDayWithHourClockType(const Time& time,
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HourClockType type,
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AmPmClockType ampm) {
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// Just redirect to the normal function if the default type matches the
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// given type.
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HourClockType default_type = GetHourClockType();
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if (default_type == type && (type == k24HourClock || ampm == kKeepAmPm)) {
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return TimeFormatTimeOfDay(time);
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}
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const char* base_pattern = (type == k12HourClock ? "ahm" : "Hm");
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icu::SimpleDateFormat formatter = CreateSimpleDateFormatter(base_pattern);
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if (ampm == kKeepAmPm) {
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return TimeFormat(&formatter, time);
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}
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return TimeFormatWithoutAmPm(&formatter, time);
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}
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string16 TimeFormatShortDate(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateInstance(icu::DateFormat::kMedium));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatShortDateNumeric(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateInstance(icu::DateFormat::kShort));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatShortDateAndTime(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateTimeInstance(icu::DateFormat::kShort));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatShortDateAndTimeWithTimeZone(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateTimeInstance(icu::DateFormat::kShort,
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icu::DateFormat::kLong));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatMonthAndYear(const Time& time) {
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icu::SimpleDateFormat formatter =
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CreateSimpleDateFormatter(DateFormatToString(DATE_FORMAT_YEAR_MONTH));
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return TimeFormat(&formatter, time);
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}
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string16 TimeFormatFriendlyDateAndTime(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateTimeInstance(icu::DateFormat::kFull));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatFriendlyDate(const Time& time) {
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std::unique_ptr<icu::DateFormat> formatter(
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icu::DateFormat::createDateInstance(icu::DateFormat::kFull));
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return TimeFormat(formatter.get(), time);
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}
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string16 TimeFormatWithPattern(const Time& time, const char* pattern) {
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icu::SimpleDateFormat formatter = CreateSimpleDateFormatter(pattern);
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return TimeFormat(&formatter, time);
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}
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bool TimeDurationFormat(const TimeDelta time,
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const DurationFormatWidth width,
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string16* out) {
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DCHECK(out);
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UErrorCode status = U_ZERO_ERROR;
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const int total_minutes = static_cast<int>(time.InSecondsF() / 60 + 0.5);
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const int hours = total_minutes / 60;
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const int minutes = total_minutes % 60;
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UMeasureFormatWidth u_width = DurationWidthToMeasureWidth(width);
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// TODO(derat): Delete the |status| checks and LOG(ERROR) calls throughout
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// this function once the cause of http://crbug.com/677043 is tracked down.
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const icu::Measure measures[] = {
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icu::Measure(hours, icu::MeasureUnit::createHour(status), status),
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icu::Measure(minutes, icu::MeasureUnit::createMinute(status), status)};
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if (U_FAILURE(status)) {
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LOG(ERROR) << "Creating MeasureUnit or Measure for " << hours << "h"
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<< minutes << "m failed: " << u_errorName(status);
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return false;
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}
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icu::MeasureFormat measure_format(icu::Locale::getDefault(), u_width, status);
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if (U_FAILURE(status)) {
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LOG(ERROR) << "Creating MeasureFormat for "
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<< icu::Locale::getDefault().getName()
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<< " failed: " << u_errorName(status);
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return false;
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}
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icu::UnicodeString formatted;
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icu::FieldPosition ignore(icu::FieldPosition::DONT_CARE);
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measure_format.formatMeasures(measures, 2, formatted, ignore, status);
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if (U_FAILURE(status)) {
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LOG(ERROR) << "formatMeasures failed: " << u_errorName(status);
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return false;
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}
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*out = i18n::UnicodeStringToString16(formatted);
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return true;
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}
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bool TimeDurationFormatWithSeconds(const TimeDelta time,
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const DurationFormatWidth width,
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string16* out) {
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DCHECK(out);
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UErrorCode status = U_ZERO_ERROR;
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const int64_t total_seconds = static_cast<int64_t>(time.InSecondsF() + 0.5);
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const int64_t hours = total_seconds / 3600;
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const int64_t minutes = (total_seconds - hours * 3600) / 60;
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const int64_t seconds = total_seconds % 60;
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UMeasureFormatWidth u_width = DurationWidthToMeasureWidth(width);
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const icu::Measure measures[] = {
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icu::Measure(hours, icu::MeasureUnit::createHour(status), status),
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icu::Measure(minutes, icu::MeasureUnit::createMinute(status), status),
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icu::Measure(seconds, icu::MeasureUnit::createSecond(status), status)};
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icu::MeasureFormat measure_format(icu::Locale::getDefault(), u_width, status);
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icu::UnicodeString formatted;
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icu::FieldPosition ignore(icu::FieldPosition::DONT_CARE);
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measure_format.formatMeasures(measures, 3, formatted, ignore, status);
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*out = i18n::UnicodeStringToString16(formatted);
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return U_SUCCESS(status) == TRUE;
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}
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string16 DateIntervalFormat(const Time& begin_time,
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const Time& end_time,
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DateFormat format) {
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UErrorCode status = U_ZERO_ERROR;
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std::unique_ptr<icu::DateIntervalFormat> formatter(
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icu::DateIntervalFormat::createInstance(DateFormatToString(format),
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status));
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icu::FieldPosition pos = 0;
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UDate start_date = static_cast<UDate>(begin_time.ToDoubleT() * 1000);
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UDate end_date = static_cast<UDate>(end_time.ToDoubleT() * 1000);
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icu::DateInterval interval(start_date, end_date);
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icu::UnicodeString formatted;
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formatter->format(&interval, formatted, pos, status);
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return i18n::UnicodeStringToString16(formatted);
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}
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HourClockType GetHourClockType() {
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// TODO(satorux,jshin): Rework this with ures_getByKeyWithFallback()
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// once it becomes public. The short time format can be found at
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// "calendar/gregorian/DateTimePatterns/3" in the resources.
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std::unique_ptr<icu::SimpleDateFormat> formatter(
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static_cast<icu::SimpleDateFormat*>(
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icu::DateFormat::createTimeInstance(icu::DateFormat::kShort)));
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// Retrieve the short time format.
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icu::UnicodeString pattern_unicode;
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formatter->toPattern(pattern_unicode);
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// Determine what hour clock type the current locale uses, by checking
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// "a" (am/pm marker) in the short time format. This is reliable as "a"
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// is used by all of 12-hour clock formats, but not any of 24-hour clock
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// formats, as shown below.
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//
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// % grep -A4 DateTimePatterns third_party/icu/source/data/locales/*.txt |
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// grep -B1 -- -- |grep -v -- '--' |
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// perl -nle 'print $1 if /^\S+\s+"(.*)"/' |sort -u
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//
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// H.mm
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// H:mm
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// HH.mm
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// HH:mm
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// a h:mm
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// ah:mm
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// ahh:mm
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// h-mm a
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// h:mm a
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// hh:mm a
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//
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// See http://userguide.icu-project.org/formatparse/datetime for details
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// about the date/time format syntax.
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return pattern_unicode.indexOf('a') == -1 ? k24HourClock : k12HourClock;
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}
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} // namespace base
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