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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /intl/icu/source/i18n/number_grouping.cpp
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'intl/icu/source/i18n/number_grouping.cpp')
-rw-r--r--intl/icu/source/i18n/number_grouping.cpp109
1 files changed, 109 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_grouping.cpp b/intl/icu/source/i18n/number_grouping.cpp
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+++ b/intl/icu/source/i18n/number_grouping.cpp
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+// © 2017 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/numberformatter.h"
+#include "number_patternstring.h"
+#include "uresimp.h"
+
+using namespace icu;
+using namespace icu::number;
+using namespace icu::number::impl;
+
+namespace {
+
+int16_t getMinGroupingForLocale(const Locale& locale) {
+ // TODO: Cache this?
+ UErrorCode localStatus = U_ZERO_ERROR;
+ LocalUResourceBundlePointer bundle(ures_open(nullptr, locale.getName(), &localStatus));
+ int32_t resultLen = 0;
+ const char16_t* result = ures_getStringByKeyWithFallback(
+ bundle.getAlias(),
+ "NumberElements/minimumGroupingDigits",
+ &resultLen,
+ &localStatus);
+ // TODO: Is it safe to assume resultLen == 1? Would locales set minGrouping >= 10?
+ if (U_FAILURE(localStatus) || resultLen != 1) {
+ return 1;
+ }
+ return result[0] - u'0';
+}
+
+}
+
+Grouper Grouper::forStrategy(UNumberGroupingStrategy grouping) {
+ switch (grouping) {
+ case UNUM_GROUPING_OFF:
+ return {-1, -1, -2, grouping};
+ case UNUM_GROUPING_AUTO:
+ return {-2, -2, -2, grouping};
+ case UNUM_GROUPING_MIN2:
+ return {-2, -2, -3, grouping};
+ case UNUM_GROUPING_ON_ALIGNED:
+ return {-4, -4, 1, grouping};
+ case UNUM_GROUPING_THOUSANDS:
+ return {3, 3, 1, grouping};
+ default:
+ UPRV_UNREACHABLE_EXIT;
+ }
+}
+
+Grouper Grouper::forProperties(const DecimalFormatProperties& properties) {
+ if (!properties.groupingUsed) {
+ return forStrategy(UNUM_GROUPING_OFF);
+ }
+ auto grouping1 = static_cast<int16_t>(properties.groupingSize);
+ auto grouping2 = static_cast<int16_t>(properties.secondaryGroupingSize);
+ auto minGrouping = static_cast<int16_t>(properties.minimumGroupingDigits);
+ grouping1 = grouping1 > 0 ? grouping1 : grouping2 > 0 ? grouping2 : grouping1;
+ grouping2 = grouping2 > 0 ? grouping2 : grouping1;
+ return {grouping1, grouping2, minGrouping, UNUM_GROUPING_COUNT};
+}
+
+void Grouper::setLocaleData(const impl::ParsedPatternInfo &patternInfo, const Locale& locale) {
+ if (fMinGrouping == -2) {
+ fMinGrouping = getMinGroupingForLocale(locale);
+ } else if (fMinGrouping == -3) {
+ fMinGrouping = static_cast<int16_t>(uprv_max(2, getMinGroupingForLocale(locale)));
+ } else {
+ // leave fMinGrouping alone
+ }
+ if (fGrouping1 != -2 && fGrouping2 != -4) {
+ return;
+ }
+ auto grouping1 = static_cast<int16_t> (patternInfo.positive.groupingSizes & 0xffff);
+ auto grouping2 = static_cast<int16_t> ((patternInfo.positive.groupingSizes >> 16) & 0xffff);
+ auto grouping3 = static_cast<int16_t> ((patternInfo.positive.groupingSizes >> 32) & 0xffff);
+ if (grouping2 == -1) {
+ grouping1 = fGrouping1 == -4 ? (short) 3 : (short) -1;
+ }
+ if (grouping3 == -1) {
+ grouping2 = grouping1;
+ }
+ fGrouping1 = grouping1;
+ fGrouping2 = grouping2;
+}
+
+bool Grouper::groupAtPosition(int32_t position, const impl::DecimalQuantity &value) const {
+ U_ASSERT(fGrouping1 > -2);
+ if (fGrouping1 == -1 || fGrouping1 == 0) {
+ // Either -1 or 0 means "no grouping"
+ return false;
+ }
+ position -= fGrouping1;
+ return position >= 0 && (position % fGrouping2) == 0
+ && value.getUpperDisplayMagnitude() - fGrouping1 + 1 >= fMinGrouping;
+}
+
+int16_t Grouper::getPrimary() const {
+ return fGrouping1;
+}
+
+int16_t Grouper::getSecondary() const {
+ return fGrouping2;
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */