Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 263 insertions, 0 deletions

diff --git a/intl/locale/AppDateTimeFormat.cpp b/intl/locale/AppDateTimeFormat.cpp
new file mode 100644
index 0000000000..d967d312a4
--- /dev/null
+++ b/intl/locale/AppDateTimeFormat.cpp
@@ -0,0 +1,263 @@
+/* -*- 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 "nsCOMPtr.h"
+#include "mozilla/intl/AppDateTimeFormat.h"
+#include "mozilla/intl/DateTimePatternGenerator.h"
+#include "mozilla/intl/FormatBuffer.h"
+#include "mozilla/intl/LocaleService.h"
+#include "OSPreferences.h"
+#include "mozIOSPreferences.h"
+#ifdef DEBUG
+#  include "nsThreadManager.h"
+#endif
+
+namespace mozilla::intl {
+
+nsCString* AppDateTimeFormat::sLocale = nullptr;
+nsTHashMap<nsCStringHashKey, UniquePtr<DateTimeFormat>>*
+    AppDateTimeFormat::sFormatCache;
+
+static const int32_t DATETIME_FORMAT_INITIAL_LEN = 127;
+
+/*static*/
+nsresult AppDateTimeFormat::Initialize() {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (sLocale) {
+    return NS_OK;
+  }
+
+  sLocale = new nsCString();
+  AutoTArray<nsCString, 10> regionalPrefsLocales;
+  LocaleService::GetInstance()->GetRegionalPrefsLocales(regionalPrefsLocales);
+  sLocale->Assign(regionalPrefsLocales[0]);
+
+  return NS_OK;
+}
+
+// performs a locale sensitive date formatting operation on the PRTime parameter
+/*static*/
+nsresult AppDateTimeFormat::Format(const DateTimeFormat::StyleBag& aStyle,
+                                   const PRTime aPrTime,
+                                   nsAString& aStringOut) {
+  return AppDateTimeFormat::Format(
+      aStyle, (static_cast<double>(aPrTime) / PR_USEC_PER_MSEC), nullptr,
+      aStringOut);
+}
+
+// performs a locale sensitive date formatting operation on the PRExplodedTime
+// parameter
+/*static*/
+nsresult AppDateTimeFormat::Format(const DateTimeFormat::StyleBag& aStyle,
+                                   const PRExplodedTime* aExplodedTime,
+                                   nsAString& aStringOut) {
+  return AppDateTimeFormat::Format(
+      aStyle, (PR_ImplodeTime(aExplodedTime) / PR_USEC_PER_MSEC),
+      &(aExplodedTime->tm_params), aStringOut);
+}
+
+// performs a locale sensitive date formatting operation on the PRExplodedTime
+// parameter, using the specified options.
+/*static*/
+nsresult AppDateTimeFormat::Format(const DateTimeFormat::ComponentsBag& aBag,
+                                   const PRExplodedTime* aExplodedTime,
+                                   nsAString& aStringOut) {
+  // set up locale data
+  nsresult rv = Initialize();
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  aStringOut.Truncate();
+
+  nsAutoCString str;
+  nsAutoString timeZoneID;
+  BuildTimeZoneString(aExplodedTime->tm_params, timeZoneID);
+
+  auto genResult = DateTimePatternGenerator::TryCreate(sLocale->get());
+  NS_ENSURE_TRUE(genResult.isOk(), NS_ERROR_FAILURE);
+  auto dateTimePatternGenerator = genResult.unwrap();
+
+  auto result = DateTimeFormat::TryCreateFromComponents(
+      *sLocale, aBag, dateTimePatternGenerator.get(), Some(timeZoneID));
+  NS_ENSURE_TRUE(result.isOk(), NS_ERROR_FAILURE);
+  auto dateTimeFormat = result.unwrap();
+
+  double unixEpoch =
+      static_cast<float>((PR_ImplodeTime(aExplodedTime) / PR_USEC_PER_MSEC));
+
+  aStringOut.SetLength(DATETIME_FORMAT_INITIAL_LEN);
+  nsTStringToBufferAdapter buffer(aStringOut);
+  NS_ENSURE_TRUE(dateTimeFormat->TryFormat(unixEpoch, buffer).isOk(),
+                 NS_ERROR_FAILURE);
+
+  return rv;
+}
+
+/**
+ * An internal utility function to serialize a Maybe<DateTimeFormat::Style> to
+ * an int, to be used as a caching key.
+ */
+static int StyleToInt(const Maybe<DateTimeFormat::Style>& aStyle) {
+  if (aStyle.isSome()) {
+    switch (*aStyle) {
+      case DateTimeFormat::Style::Full:
+        return 1;
+      case DateTimeFormat::Style::Long:
+        return 2;
+      case DateTimeFormat::Style::Medium:
+        return 3;
+      case DateTimeFormat::Style::Short:
+        return 4;
+    }
+  }
+  return 0;
+}
+
+/*static*/
+nsresult AppDateTimeFormat::Format(const DateTimeFormat::StyleBag& aStyle,
+                                   const double aUnixEpoch,
+                                   const PRTimeParameters* aTimeParameters,
+                                   nsAString& aStringOut) {
+  nsresult rv = NS_OK;
+
+  // return, nothing to format
+  if (aStyle.date.isNothing() && aStyle.time.isNothing()) {
+    aStringOut.Truncate();
+    return NS_OK;
+  }
+
+  // set up locale data
+  rv = Initialize();
+
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsAutoCString key;
+  key.AppendInt(StyleToInt(aStyle.date));
+  key.Append(':');
+  key.AppendInt(StyleToInt(aStyle.time));
+  if (aTimeParameters) {
+    key.Append(':');
+    key.AppendInt(aTimeParameters->tp_gmt_offset);
+    key.Append(':');
+    key.AppendInt(aTimeParameters->tp_dst_offset);
+  }
+
+  if (sFormatCache && sFormatCache->Count() == kMaxCachedFormats) {
+    // Don't allow a pathological page to extend the cache unreasonably.
+    NS_WARNING("flushing DateTimeFormat cache");
+    DeleteCache();
+  }
+  if (!sFormatCache) {
+    sFormatCache = new nsTHashMap<nsCStringHashKey, UniquePtr<DateTimeFormat>>(
+        kMaxCachedFormats);
+  }
+
+  UniquePtr<DateTimeFormat>& dateTimeFormat = sFormatCache->LookupOrInsert(key);
+
+  if (!dateTimeFormat) {
+    // We didn't have a cached formatter for this key, so create one.
+    int32_t dateFormatStyle = mozIOSPreferences::dateTimeFormatStyleNone;
+    if (aStyle.date.isSome()) {
+      switch (*aStyle.date) {
+        case DateTimeFormat::Style::Full:
+        case DateTimeFormat::Style::Long:
+          dateFormatStyle = mozIOSPreferences::dateTimeFormatStyleLong;
+          break;
+        case DateTimeFormat::Style::Medium:
+        case DateTimeFormat::Style::Short:
+          dateFormatStyle = mozIOSPreferences::dateTimeFormatStyleShort;
+          break;
+      }
+    }
+
+    int32_t timeFormatStyle = mozIOSPreferences::dateTimeFormatStyleNone;
+    if (aStyle.time.isSome()) {
+      switch (*aStyle.time) {
+        case DateTimeFormat::Style::Full:
+        case DateTimeFormat::Style::Long:
+          timeFormatStyle = mozIOSPreferences::dateTimeFormatStyleLong;
+          break;
+        case DateTimeFormat::Style::Medium:
+        case DateTimeFormat::Style::Short:
+          timeFormatStyle = mozIOSPreferences::dateTimeFormatStyleShort;
+          break;
+      }
+    }
+
+    nsAutoCString str;
+    rv = OSPreferences::GetInstance()->GetDateTimePattern(
+        dateFormatStyle, timeFormatStyle, nsDependentCString(sLocale->get()),
+        str);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsAutoString pattern = NS_ConvertUTF8toUTF16(str);
+
+    Maybe<Span<const char16_t>> timeZoneOverride = Nothing();
+    nsAutoString timeZoneID;
+    if (aTimeParameters) {
+      BuildTimeZoneString(*aTimeParameters, timeZoneID);
+      timeZoneOverride =
+          Some(Span<const char16_t>(timeZoneID.Data(), timeZoneID.Length()));
+    }
+
+    auto result = DateTimeFormat::TryCreateFromPattern(*sLocale, pattern,
+                                                       timeZoneOverride);
+    NS_ENSURE_TRUE(result.isOk(), NS_ERROR_FAILURE);
+    dateTimeFormat = result.unwrap();
+  }
+
+  MOZ_ASSERT(dateTimeFormat);
+
+  aStringOut.SetLength(DATETIME_FORMAT_INITIAL_LEN);
+  nsTStringToBufferAdapter buffer(aStringOut);
+  NS_ENSURE_TRUE(dateTimeFormat->TryFormat(aUnixEpoch, buffer).isOk(),
+                 NS_ERROR_FAILURE);
+
+  return rv;
+}
+
+/*static*/
+void AppDateTimeFormat::BuildTimeZoneString(
+    const PRTimeParameters& aTimeParameters, nsAString& aStringOut) {
+  aStringOut.Truncate();
+  aStringOut.Append(u"GMT");
+  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;
+    aStringOut.AppendPrintf("%c%02d:%02d", sign, hours, minutes);
+  }
+}
+
+/*static*/
+void AppDateTimeFormat::DeleteCache() {
+  MOZ_ASSERT(NS_IsMainThread());
+  if (sFormatCache) {
+    delete sFormatCache;
+    sFormatCache = nullptr;
+  }
+}
+
+/*static*/
+void AppDateTimeFormat::Shutdown() {
+  MOZ_ASSERT(NS_IsMainThread());
+  DeleteCache();
+  delete sLocale;
+}
+
+/*static*/
+void AppDateTimeFormat::ClearLocaleCache() {
+  MOZ_ASSERT(NS_IsMainThread());
+  DeleteCache();
+  delete sLocale;
+  sLocale = nullptr;
+}
+
+}  // namespace mozilla::intl