gecko-dev/intl/locale/DateTimeFormat.cpp
Ryan Hunt 62b9ce54b9 Bug 1523969 part 11 - Move method definition inline comments to new line in 'intl/'. r=jfkthame
Differential Revision: https://phabricator.services.mozilla.com/D21111

--HG--
extra : rebase_source : d5c8dc992e78523893b857ec9ebc0cc5b1521b77
2019-02-25 16:08:21 -06:00

289 lines
9.3 KiB
C++

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