mirror of
https://github.com/mozilla/gecko-dev.git
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62b9ce54b9
Differential Revision: https://phabricator.services.mozilla.com/D21111 --HG-- extra : rebase_source : d5c8dc992e78523893b857ec9ebc0cc5b1521b77
289 lines
9.3 KiB
C++
289 lines
9.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "DateTimeFormat.h"
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#include "nsCOMPtr.h"
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#include "nsIServiceManager.h"
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#include "mozilla/intl/LocaleService.h"
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#include "OSPreferences.h"
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#include "mozIOSPreferences.h"
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#include "unicode/udatpg.h"
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namespace mozilla {
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using namespace mozilla::intl;
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nsCString* DateTimeFormat::mLocale = nullptr;
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nsDataHashtable<nsCStringHashKey, UDateFormat*>* DateTimeFormat::mFormatCache;
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/*static*/
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nsresult DateTimeFormat::Initialize() {
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if (mLocale) {
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return NS_OK;
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}
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mLocale = new nsCString();
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AutoTArray<nsCString, 10> regionalPrefsLocales;
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intl::LocaleService::GetInstance()->GetRegionalPrefsLocales(
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regionalPrefsLocales);
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mLocale->Assign(regionalPrefsLocales[0]);
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return NS_OK;
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}
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// performs a locale sensitive date formatting operation on the PRTime parameter
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/*static*/
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nsresult DateTimeFormat::FormatPRTime(
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const nsDateFormatSelector aDateFormatSelector,
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const nsTimeFormatSelector aTimeFormatSelector, const PRTime aPrTime,
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nsAString& aStringOut) {
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return FormatUDateTime(aDateFormatSelector, aTimeFormatSelector,
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(aPrTime / PR_USEC_PER_MSEC), nullptr, aStringOut);
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}
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// performs a locale sensitive date formatting operation on the PRExplodedTime
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// parameter
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/*static*/
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nsresult DateTimeFormat::FormatPRExplodedTime(
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const nsDateFormatSelector aDateFormatSelector,
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const nsTimeFormatSelector aTimeFormatSelector,
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const PRExplodedTime* aExplodedTime, nsAString& aStringOut) {
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return FormatUDateTime(aDateFormatSelector, aTimeFormatSelector,
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(PR_ImplodeTime(aExplodedTime) / PR_USEC_PER_MSEC),
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&(aExplodedTime->tm_params), aStringOut);
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}
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// performs a locale sensitive date formatting operation on the UDate parameter
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/*static*/
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nsresult DateTimeFormat::FormatUDateTime(
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const nsDateFormatSelector aDateFormatSelector,
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const nsTimeFormatSelector aTimeFormatSelector, const UDate aUDateTime,
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const PRTimeParameters* aTimeParameters, nsAString& aStringOut) {
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const int32_t DATETIME_FORMAT_INITIAL_LEN = 127;
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int32_t dateTimeLen = 0;
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nsresult rv = NS_OK;
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// return, nothing to format
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if (aDateFormatSelector == kDateFormatNone &&
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aTimeFormatSelector == kTimeFormatNone) {
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aStringOut.Truncate();
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return NS_OK;
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}
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// set up locale data
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rv = Initialize();
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if (NS_FAILED(rv)) {
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return rv;
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}
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UErrorCode status = U_ZERO_ERROR;
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nsAutoCString key;
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key.AppendInt((int)aDateFormatSelector);
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key.Append(':');
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key.AppendInt((int)aTimeFormatSelector);
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if (aTimeParameters) {
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key.Append(':');
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key.AppendInt(aTimeParameters->tp_gmt_offset);
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key.Append(':');
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key.AppendInt(aTimeParameters->tp_dst_offset);
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}
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if (mFormatCache && mFormatCache->Count() == kMaxCachedFormats) {
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// Don't allow a pathological page to extend the cache unreasonably.
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NS_WARNING("flushing UDateFormat cache");
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DeleteCache();
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}
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if (!mFormatCache) {
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mFormatCache =
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new nsDataHashtable<nsCStringHashKey, UDateFormat*>(kMaxCachedFormats);
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}
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UDateFormat*& dateTimeFormat = mFormatCache->GetOrInsert(key);
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if (!dateTimeFormat) {
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// We didn't have a cached formatter for this key, so create one.
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// Get the date style for the formatter.
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nsAutoString skeletonDate;
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nsAutoString patternDate;
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bool haveSkeleton = true;
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switch (aDateFormatSelector) {
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case kDateFormatLong:
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rv = OSPreferences::GetInstance()->GetDateTimePattern(
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mozIOSPreferences::dateTimeFormatStyleLong,
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mozIOSPreferences::dateTimeFormatStyleNone,
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nsDependentCString(mLocale->get()), patternDate);
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NS_ENSURE_SUCCESS(rv, rv);
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haveSkeleton = false;
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break;
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case kDateFormatShort:
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rv = OSPreferences::GetInstance()->GetDateTimePattern(
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mozIOSPreferences::dateTimeFormatStyleShort,
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mozIOSPreferences::dateTimeFormatStyleNone,
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nsDependentCString(mLocale->get()), patternDate);
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NS_ENSURE_SUCCESS(rv, rv);
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haveSkeleton = false;
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break;
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case kDateFormatYearMonth:
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skeletonDate.AssignLiteral("yyyyMM");
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break;
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case kDateFormatYearMonthLong:
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skeletonDate.AssignLiteral("yyyyMMMM");
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break;
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case kDateFormatMonthLong:
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skeletonDate.AssignLiteral("MMMM");
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break;
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case kDateFormatWeekday:
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skeletonDate.AssignLiteral("EEE");
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break;
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case kDateFormatNone:
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haveSkeleton = false;
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break;
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default:
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NS_ERROR("Unknown nsDateFormatSelector");
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return NS_ERROR_ILLEGAL_VALUE;
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}
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if (haveSkeleton) {
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// Get pattern for skeleton.
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UDateTimePatternGenerator* patternGenerator =
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udatpg_open(mLocale->get(), &status);
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if (U_SUCCESS(status)) {
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int32_t patternLength;
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patternDate.SetLength(DATETIME_FORMAT_INITIAL_LEN);
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patternLength = udatpg_getBestPattern(
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patternGenerator,
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reinterpret_cast<const UChar*>(skeletonDate.BeginReading()),
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skeletonDate.Length(),
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reinterpret_cast<UChar*>(patternDate.BeginWriting()),
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DATETIME_FORMAT_INITIAL_LEN, &status);
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patternDate.SetLength(patternLength);
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if (status == U_BUFFER_OVERFLOW_ERROR) {
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status = U_ZERO_ERROR;
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udatpg_getBestPattern(
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patternGenerator,
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reinterpret_cast<const UChar*>(skeletonDate.BeginReading()),
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skeletonDate.Length(),
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reinterpret_cast<UChar*>(patternDate.BeginWriting()),
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patternLength, &status);
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}
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}
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udatpg_close(patternGenerator);
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}
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// Get the time style for the formatter.
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nsAutoString patternTime;
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switch (aTimeFormatSelector) {
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case kTimeFormatSeconds:
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rv = OSPreferences::GetInstance()->GetDateTimePattern(
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mozIOSPreferences::dateTimeFormatStyleNone,
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mozIOSPreferences::dateTimeFormatStyleLong,
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nsDependentCString(mLocale->get()), patternTime);
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NS_ENSURE_SUCCESS(rv, rv);
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break;
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case kTimeFormatNoSeconds:
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rv = OSPreferences::GetInstance()->GetDateTimePattern(
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mozIOSPreferences::dateTimeFormatStyleNone,
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mozIOSPreferences::dateTimeFormatStyleShort,
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nsDependentCString(mLocale->get()), patternTime);
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NS_ENSURE_SUCCESS(rv, rv);
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break;
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case kTimeFormatNone:
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break;
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default:
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NS_ERROR("Unknown nsTimeFormatSelector");
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return NS_ERROR_ILLEGAL_VALUE;
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}
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nsAutoString pattern;
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if (patternTime.Length() == 0) {
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pattern.Assign(patternDate);
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} else if (patternDate.Length() == 0) {
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pattern.Assign(patternTime);
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} else {
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OSPreferences::GetDateTimeConnectorPattern(
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nsDependentCString(mLocale->get()), pattern);
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int32_t index = pattern.Find("{1}");
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if (index != kNotFound) pattern.Replace(index, 3, patternDate);
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index = pattern.Find("{0}");
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if (index != kNotFound) pattern.Replace(index, 3, patternTime);
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}
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// Generate date/time string.
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nsAutoString timeZoneID(u"GMT");
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if (aTimeParameters) {
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int32_t totalOffsetMinutes =
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(aTimeParameters->tp_gmt_offset + aTimeParameters->tp_dst_offset) /
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60;
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if (totalOffsetMinutes != 0) {
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char sign = totalOffsetMinutes < 0 ? '-' : '+';
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int32_t hours = abs(totalOffsetMinutes) / 60;
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int32_t minutes = abs(totalOffsetMinutes) % 60;
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timeZoneID.AppendPrintf("%c%02d:%02d", sign, hours, minutes);
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}
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}
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if (aTimeParameters) {
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dateTimeFormat =
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udat_open(UDAT_PATTERN, UDAT_PATTERN, mLocale->get(),
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reinterpret_cast<const UChar*>(timeZoneID.BeginReading()),
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timeZoneID.Length(),
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reinterpret_cast<const UChar*>(pattern.BeginReading()),
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pattern.Length(), &status);
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} else {
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dateTimeFormat =
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udat_open(UDAT_PATTERN, UDAT_PATTERN, mLocale->get(), nullptr, -1,
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reinterpret_cast<const UChar*>(pattern.BeginReading()),
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pattern.Length(), &status);
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}
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}
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if (U_SUCCESS(status) && dateTimeFormat) {
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aStringOut.SetLength(DATETIME_FORMAT_INITIAL_LEN);
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dateTimeLen =
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udat_format(dateTimeFormat, aUDateTime,
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reinterpret_cast<UChar*>(aStringOut.BeginWriting()),
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DATETIME_FORMAT_INITIAL_LEN, nullptr, &status);
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aStringOut.SetLength(dateTimeLen);
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if (status == U_BUFFER_OVERFLOW_ERROR) {
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status = U_ZERO_ERROR;
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udat_format(dateTimeFormat, aUDateTime,
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reinterpret_cast<UChar*>(aStringOut.BeginWriting()),
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dateTimeLen, nullptr, &status);
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}
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}
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if (U_FAILURE(status)) {
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rv = NS_ERROR_FAILURE;
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}
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return rv;
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}
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/*static*/
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void DateTimeFormat::DeleteCache() {
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if (mFormatCache) {
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for (auto i = mFormatCache->Iter(); !i.Done(); i.Next()) {
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udat_close(i.Data());
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}
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delete mFormatCache;
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mFormatCache = nullptr;
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}
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}
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/*static*/
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void DateTimeFormat::Shutdown() {
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DeleteCache();
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if (mLocale) {
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delete mLocale;
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}
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}
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} // namespace mozilla
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