110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
// © 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(NULL, 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;
|
|
}
|
|
}
|
|
|
|
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 (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;
|
|
}
|
|
if (fMinGrouping == -2) {
|
|
fMinGrouping = getMinGroupingForLocale(locale);
|
|
} else if (fMinGrouping == -3) {
|
|
fMinGrouping = static_cast<int16_t>(uprv_max(2, getMinGroupingForLocale(locale)));
|
|
} else {
|
|
// leave fMinGrouping alone
|
|
}
|
|
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 */
|