1 files changed, 376 insertions, 0 deletions
diff --git a/Source/WebCore/platform/text/LocaleICU.cpp b/Source/WebCore/platform/text/LocaleICU.cpp
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+++ b/Source/WebCore/platform/text/LocaleICU.cpp
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+/*
+ * Copyright (C) 2011,2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "LocaleICU.h"
+
+#include "LocalizedStrings.h"
+#include <limits>
+#include <unicode/udatpg.h>
+#include <unicode/uloc.h>
+#include <wtf/DateMath.h>
+#include <wtf/text/StringBuilder.h>
+
+using namespace icu;
+using namespace std;
+
+namespace WebCore {
+
+std::unique_ptr<Locale> Locale::create(const AtomicString& locale)
+{
+    return std::make_unique<LocaleICU>(locale.string().utf8().data());
+}
+
+LocaleICU::LocaleICU(const char* locale)
+    : m_locale(locale)
+{
+}
+
+LocaleICU::~LocaleICU()
+{
+#if !UCONFIG_NO_FORMATTING
+    unum_close(m_numberFormat);
+#endif
+#if ENABLE(DATE_AND_TIME_INPUT_TYPES)
+    udat_close(m_shortDateFormat);
+    udat_close(m_mediumTimeFormat);
+    udat_close(m_shortTimeFormat);
+#endif
+}
+
+#if !UCONFIG_NO_FORMATTING
+String LocaleICU::decimalSymbol(UNumberFormatSymbol symbol)
+{
+    UErrorCode status = U_ZERO_ERROR;
+    int32_t bufferLength = unum_getSymbol(m_numberFormat, symbol, 0, 0, &status);
+    ASSERT(U_SUCCESS(status) || status == U_BUFFER_OVERFLOW_ERROR);
+    if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
+        return String();
+    Vector<UChar> buffer(bufferLength);
+    status = U_ZERO_ERROR;
+    unum_getSymbol(m_numberFormat, symbol, buffer.data(), bufferLength, &status);
+    if (U_FAILURE(status))
+        return String();
+    return String::adopt(WTFMove(buffer));
+}
+
+String LocaleICU::decimalTextAttribute(UNumberFormatTextAttribute tag)
+{
+    UErrorCode status = U_ZERO_ERROR;
+    int32_t bufferLength = unum_getTextAttribute(m_numberFormat, tag, 0, 0, &status);
+    ASSERT(U_SUCCESS(status) || status == U_BUFFER_OVERFLOW_ERROR);
+    if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
+        return String();
+    Vector<UChar> buffer(bufferLength);
+    status = U_ZERO_ERROR;
+    unum_getTextAttribute(m_numberFormat, tag, buffer.data(), bufferLength, &status);
+    ASSERT(U_SUCCESS(status));
+    if (U_FAILURE(status))
+        return String();
+    return String::adopt(WTFMove(buffer));
+}
+#endif
+
+void LocaleICU::initializeLocaleData()
+{
+#if !UCONFIG_NO_FORMATTING
+    if (m_didCreateDecimalFormat)
+        return;
+    m_didCreateDecimalFormat = true;
+    UErrorCode status = U_ZERO_ERROR;
+    m_numberFormat = unum_open(UNUM_DECIMAL, 0, 0, m_locale.data(), 0, &status);
+    if (!U_SUCCESS(status))
+        return;
+
+    Vector<String, DecimalSymbolsSize> symbols;
+    symbols.append(decimalSymbol(UNUM_ZERO_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_ONE_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_TWO_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_THREE_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_FOUR_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_FIVE_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_SIX_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_SEVEN_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_EIGHT_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_NINE_DIGIT_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_DECIMAL_SEPARATOR_SYMBOL));
+    symbols.append(decimalSymbol(UNUM_GROUPING_SEPARATOR_SYMBOL));
+    ASSERT(symbols.size() == DecimalSymbolsSize);
+    setLocaleData(symbols, decimalTextAttribute(UNUM_POSITIVE_PREFIX), decimalTextAttribute(UNUM_POSITIVE_SUFFIX), decimalTextAttribute(UNUM_NEGATIVE_PREFIX), decimalTextAttribute(UNUM_NEGATIVE_SUFFIX));
+#endif
+}
+
+#if ENABLE(DATE_AND_TIME_INPUT_TYPES)
+bool LocaleICU::initializeShortDateFormat()
+{
+    if (m_didCreateShortDateFormat)
+        return m_shortDateFormat;
+    m_shortDateFormat = openDateFormat(UDAT_NONE, UDAT_SHORT);
+    m_didCreateShortDateFormat = true;
+    return m_shortDateFormat;
+}
+
+UDateFormat* LocaleICU::openDateFormat(UDateFormatStyle timeStyle, UDateFormatStyle dateStyle) const
+{
+    const UChar gmtTimezone[3] = {'G', 'M', 'T'};
+    UErrorCode status = U_ZERO_ERROR;
+    return udat_open(timeStyle, dateStyle, m_locale.data(), gmtTimezone, WTF_ARRAY_LENGTH(gmtTimezone), 0, -1, &status);
+}
+
+static String getDateFormatPattern(const UDateFormat* dateFormat)
+{
+    if (!dateFormat)
+        return emptyString();
+
+    UErrorCode status = U_ZERO_ERROR;
+    int32_t length = udat_toPattern(dateFormat, TRUE, 0, 0, &status);
+    if (status != U_BUFFER_OVERFLOW_ERROR || !length)
+        return emptyString();
+    Vector<UChar> buffer(length);
+    status = U_ZERO_ERROR;
+    udat_toPattern(dateFormat, TRUE, buffer.data(), length, &status);
+    if (U_FAILURE(status))
+        return emptyString();
+    return String::adopt(WTFMove(buffer));
+}
+
+std::unique_ptr<Vector<String>> LocaleICU::createLabelVector(const UDateFormat* dateFormat, UDateFormatSymbolType type, int32_t startIndex, int32_t size)
+{
+    if (!dateFormat)
+        return std::make_unique<Vector<String>>();
+    if (udat_countSymbols(dateFormat, type) != startIndex + size)
+        return std::make_unique<Vector<String>>();
+
+    auto labels = std::make_unique<Vector<String>>();
+    labels->reserveCapacity(size);
+    for (int32_t i = 0; i < size; ++i) {
+        UErrorCode status = U_ZERO_ERROR;
+        int32_t length = udat_getSymbols(dateFormat, type, startIndex + i, 0, 0, &status);
+        if (status != U_BUFFER_OVERFLOW_ERROR)
+            return std::make_unique<Vector<String>>();
+        Vector<UChar> buffer(length);
+        status = U_ZERO_ERROR;
+        udat_getSymbols(dateFormat, type, startIndex + i, buffer.data(), length, &status);
+        if (U_FAILURE(status))
+            return std::make_unique<Vector<String>>();
+        labels->append(String::adopt(WTFMove(buffer)));
+    }
+    return WTFMove(labels);
+}
+
+static std::unique_ptr<Vector<String>> createFallbackMonthLabels()
+{
+    auto labels = std::make_unique<Vector<String>>();
+    labels->reserveCapacity(WTF_ARRAY_LENGTH(WTF::monthFullName));
+    for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthFullName); ++i)
+        labels->append(WTF::monthFullName[i]);
+    return WTFMove(labels);
+}
+
+const Vector<String>& LocaleICU::monthLabels()
+{
+    if (m_monthLabels)
+        return *m_monthLabels;
+    if (initializeShortDateFormat()) {
+        m_monthLabels = createLabelVector(m_shortDateFormat, UDAT_MONTHS, UCAL_JANUARY, 12);
+        if (m_monthLabels)
+            return *m_monthLabels;
+    }
+    m_monthLabels = createFallbackMonthLabels();
+    return *m_monthLabels;
+}
+
+static std::unique_ptr<Vector<String>> createFallbackAMPMLabels()
+{
+    auto labels = std::make_unique<Vector<String>>();
+    labels->reserveCapacity(2);
+    labels->append("AM");
+    labels->append("PM");
+    return WTFMove(labels);
+}
+
+void LocaleICU::initializeDateTimeFormat()
+{
+    if (m_didCreateTimeFormat)
+        return;
+
+    // We assume ICU medium time pattern and short time pattern are compatible
+    // with LDML, because ICU specific pattern character "V" doesn't appear
+    // in both medium and short time pattern.
+    m_mediumTimeFormat = openDateFormat(UDAT_MEDIUM, UDAT_NONE);
+    m_timeFormatWithSeconds = getDateFormatPattern(m_mediumTimeFormat);
+
+    m_shortTimeFormat = openDateFormat(UDAT_SHORT, UDAT_NONE);
+    m_timeFormatWithoutSeconds = getDateFormatPattern(m_shortTimeFormat);
+
+    UDateFormat* dateTimeFormatWithSeconds = openDateFormat(UDAT_MEDIUM, UDAT_SHORT);
+    m_dateTimeFormatWithSeconds = getDateFormatPattern(dateTimeFormatWithSeconds);
+    udat_close(dateTimeFormatWithSeconds);
+
+    UDateFormat* dateTimeFormatWithoutSeconds = openDateFormat(UDAT_SHORT, UDAT_SHORT);
+    m_dateTimeFormatWithoutSeconds = getDateFormatPattern(dateTimeFormatWithoutSeconds);
+    udat_close(dateTimeFormatWithoutSeconds);
+
+    auto timeAMPMLabels = createLabelVector(m_mediumTimeFormat, UDAT_AM_PMS, UCAL_AM, 2);
+    if (!timeAMPMLabels)
+        timeAMPMLabels = createFallbackAMPMLabels();
+    m_timeAMPMLabels = *timeAMPMLabels;
+
+    m_didCreateTimeFormat = true;
+}
+
+String LocaleICU::dateFormat()
+{
+    if (!m_dateFormat.isNull())
+        return m_dateFormat;
+    if (!initializeShortDateFormat())
+        return ASCIILiteral("yyyy-MM-dd");
+    m_dateFormat = getDateFormatPattern(m_shortDateFormat);
+    return m_dateFormat;
+}
+
+static String getFormatForSkeleton(const char* locale, const UChar* skeleton, int32_t skeletonLength)
+{
+    String format = ASCIILiteral("yyyy-MM");
+    UErrorCode status = U_ZERO_ERROR;
+    UDateTimePatternGenerator* patternGenerator = udatpg_open(locale, &status);
+    if (!patternGenerator)
+        return format;
+    status = U_ZERO_ERROR;
+    int32_t length = udatpg_getBestPattern(patternGenerator, skeleton, skeletonLength, 0, 0, &status);
+    if (status == U_BUFFER_OVERFLOW_ERROR && length) {
+        Vector<UChar> buffer(length);
+        status = U_ZERO_ERROR;
+        udatpg_getBestPattern(patternGenerator, skeleton, skeletonLength, buffer.data(), length, &status);
+        if (U_SUCCESS(status))
+            format = String::adopt(WTFMove(buffer));
+    }
+    udatpg_close(patternGenerator);
+    return format;
+}
+
+String LocaleICU::monthFormat()
+{
+    if (!m_monthFormat.isNull())
+        return m_monthFormat;
+    // Gets a format for "MMMM" because Windows API always provides formats for
+    // "MMMM" in some locales.
+    const UChar skeleton[] = { 'y', 'y', 'y', 'y', 'M', 'M', 'M', 'M' };
+    m_monthFormat = getFormatForSkeleton(m_locale.data(), skeleton, WTF_ARRAY_LENGTH(skeleton));
+    return m_monthFormat;
+}
+
+String LocaleICU::shortMonthFormat()
+{
+    if (!m_shortMonthFormat.isNull())
+        return m_shortMonthFormat;
+    const UChar skeleton[] = { 'y', 'y', 'y', 'y', 'M', 'M', 'M' };
+    m_shortMonthFormat = getFormatForSkeleton(m_locale.data(), skeleton, WTF_ARRAY_LENGTH(skeleton));
+    return m_shortMonthFormat;
+}
+
+String LocaleICU::timeFormat()
+{
+    initializeDateTimeFormat();
+    return m_timeFormatWithSeconds;
+}
+
+String LocaleICU::shortTimeFormat()
+{
+    initializeDateTimeFormat();
+    return m_timeFormatWithoutSeconds;
+}
+
+String LocaleICU::dateTimeFormatWithSeconds()
+{
+    initializeDateTimeFormat();
+    return m_dateTimeFormatWithSeconds;
+}
+
+String LocaleICU::dateTimeFormatWithoutSeconds()
+{
+    initializeDateTimeFormat();
+    return m_dateTimeFormatWithoutSeconds;
+}
+
+const Vector<String>& LocaleICU::shortMonthLabels()
+{
+    if (!m_shortMonthLabels.isEmpty())
+        return m_shortMonthLabels;
+    if (initializeShortDateFormat()) {
+        if (auto labels = createLabelVector(m_shortDateFormat, UDAT_SHORT_MONTHS, UCAL_JANUARY, 12)) {
+            m_shortMonthLabels = *labels;
+            return m_shortMonthLabels;
+        }
+    }
+    m_shortMonthLabels.reserveCapacity(WTF_ARRAY_LENGTH(WTF::monthName));
+    for (unsigned i = 0; i < WTF_ARRAY_LENGTH(WTF::monthName); ++i)
+        m_shortMonthLabels.append(WTF::monthName[i]);
+    return m_shortMonthLabels;
+}
+
+const Vector<String>& LocaleICU::standAloneMonthLabels()
+{
+    if (!m_standAloneMonthLabels.isEmpty())
+        return m_standAloneMonthLabels;
+    if (initializeShortDateFormat()) {
+        if (auto labels = createLabelVector(m_shortDateFormat, UDAT_STANDALONE_MONTHS, UCAL_JANUARY, 12)) {
+            m_standAloneMonthLabels = *labels;
+            return m_standAloneMonthLabels;
+        }
+    }
+    m_standAloneMonthLabels = monthLabels();
+    return m_standAloneMonthLabels;
+}
+
+const Vector<String>& LocaleICU::shortStandAloneMonthLabels()
+{
+    if (!m_shortStandAloneMonthLabels.isEmpty())
+        return m_shortStandAloneMonthLabels;
+    if (initializeShortDateFormat()) {
+        if (auto labels = createLabelVector(m_shortDateFormat, UDAT_STANDALONE_SHORT_MONTHS, UCAL_JANUARY, 12)) {
+            m_shortStandAloneMonthLabels = *labels;
+            return m_shortStandAloneMonthLabels;
+        }
+    }
+    m_shortStandAloneMonthLabels = shortMonthLabels();
+    return m_shortStandAloneMonthLabels;
+}
+
+const Vector<String>& LocaleICU::timeAMPMLabels()
+{
+    initializeDateTimeFormat();
+    return m_timeAMPMLabels;
+}
+
+#endif
+
+} // namespace WebCore
+