461 lines
14 KiB
C++
461 lines
14 KiB
C++
/*
|
|
*******************************************************************************
|
|
* Copyright (C) 2009-2012, International Business Machines Corporation and
|
|
* others. All Rights Reserved.
|
|
*******************************************************************************
|
|
*
|
|
* File PLURFMT.CPP
|
|
*
|
|
* Modification History:
|
|
*
|
|
* Date Name Description
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#include "unicode/messagepattern.h"
|
|
#include "unicode/plurfmt.h"
|
|
#include "unicode/plurrule.h"
|
|
#include "unicode/utypes.h"
|
|
#include "cmemory.h"
|
|
#include "messageimpl.h"
|
|
#include "plurrule_impl.h"
|
|
#include "uassert.h"
|
|
#include "uhash.h"
|
|
|
|
#if !UCONFIG_NO_FORMATTING
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
static const UChar OTHER_STRING[] = {
|
|
0x6F, 0x74, 0x68, 0x65, 0x72, 0 // "other"
|
|
};
|
|
|
|
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(PluralFormat)
|
|
|
|
PluralFormat::PluralFormat(UErrorCode& status)
|
|
: locale(Locale::getDefault()),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(NULL, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const Locale& loc, UErrorCode& status)
|
|
: locale(loc),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(NULL, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const PluralRules& rules, UErrorCode& status)
|
|
: locale(Locale::getDefault()),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(&rules, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const Locale& loc,
|
|
const PluralRules& rules,
|
|
UErrorCode& status)
|
|
: locale(loc),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(&rules, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const UnicodeString& pat,
|
|
UErrorCode& status)
|
|
: locale(Locale::getDefault()),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(NULL, status);
|
|
applyPattern(pat, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const Locale& loc,
|
|
const UnicodeString& pat,
|
|
UErrorCode& status)
|
|
: locale(loc),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(NULL, status);
|
|
applyPattern(pat, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const PluralRules& rules,
|
|
const UnicodeString& pat,
|
|
UErrorCode& status)
|
|
: locale(Locale::getDefault()),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(&rules, status);
|
|
applyPattern(pat, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const Locale& loc,
|
|
const PluralRules& rules,
|
|
const UnicodeString& pat,
|
|
UErrorCode& status)
|
|
: locale(loc),
|
|
msgPattern(status),
|
|
numberFormat(NULL),
|
|
offset(0) {
|
|
init(&rules, status);
|
|
applyPattern(pat, status);
|
|
}
|
|
|
|
PluralFormat::PluralFormat(const PluralFormat& other)
|
|
: Format(other),
|
|
locale(other.locale),
|
|
msgPattern(other.msgPattern),
|
|
numberFormat(NULL),
|
|
offset(other.offset) {
|
|
copyObjects(other);
|
|
}
|
|
|
|
void
|
|
PluralFormat::copyObjects(const PluralFormat& other) {
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
if (numberFormat != NULL) {
|
|
delete numberFormat;
|
|
}
|
|
if (pluralRulesWrapper.pluralRules != NULL) {
|
|
delete pluralRulesWrapper.pluralRules;
|
|
}
|
|
|
|
if (other.numberFormat == NULL) {
|
|
numberFormat = NumberFormat::createInstance(locale, status);
|
|
} else {
|
|
numberFormat = (NumberFormat*)other.numberFormat->clone();
|
|
}
|
|
if (other.pluralRulesWrapper.pluralRules == NULL) {
|
|
pluralRulesWrapper.pluralRules = PluralRules::forLocale(locale, status);
|
|
} else {
|
|
pluralRulesWrapper.pluralRules = other.pluralRulesWrapper.pluralRules->clone();
|
|
}
|
|
}
|
|
|
|
|
|
PluralFormat::~PluralFormat() {
|
|
delete numberFormat;
|
|
}
|
|
|
|
void
|
|
PluralFormat::init(const PluralRules* rules, UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
|
|
if (rules==NULL) {
|
|
pluralRulesWrapper.pluralRules = PluralRules::forLocale(locale, status);
|
|
} else {
|
|
pluralRulesWrapper.pluralRules = rules->clone();
|
|
if (pluralRulesWrapper.pluralRules == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return;
|
|
}
|
|
}
|
|
|
|
numberFormat= NumberFormat::createInstance(locale, status);
|
|
}
|
|
|
|
void
|
|
PluralFormat::applyPattern(const UnicodeString& newPattern, UErrorCode& status) {
|
|
msgPattern.parsePluralStyle(newPattern, NULL, status);
|
|
if (U_FAILURE(status)) {
|
|
msgPattern.clear();
|
|
offset = 0;
|
|
return;
|
|
}
|
|
offset = msgPattern.getPluralOffset(0);
|
|
}
|
|
|
|
UnicodeString&
|
|
PluralFormat::format(const Formattable& obj,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const
|
|
{
|
|
if (U_FAILURE(status)) return appendTo;
|
|
|
|
if (obj.isNumeric()) {
|
|
return format(obj.getDouble(), appendTo, pos, status);
|
|
} else {
|
|
status = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return appendTo;
|
|
}
|
|
}
|
|
|
|
UnicodeString
|
|
PluralFormat::format(int32_t number, UErrorCode& status) const {
|
|
FieldPosition fpos(0);
|
|
UnicodeString result;
|
|
return format(number, result, fpos, status);
|
|
}
|
|
|
|
UnicodeString
|
|
PluralFormat::format(double number, UErrorCode& status) const {
|
|
FieldPosition fpos(0);
|
|
UnicodeString result;
|
|
return format(number, result, fpos, status);
|
|
}
|
|
|
|
|
|
UnicodeString&
|
|
PluralFormat::format(int32_t number,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const {
|
|
return format((double)number, appendTo, pos, status);
|
|
}
|
|
|
|
UnicodeString&
|
|
PluralFormat::format(double number,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const {
|
|
if (U_FAILURE(status)) {
|
|
return appendTo;
|
|
}
|
|
if (msgPattern.countParts() == 0) {
|
|
return numberFormat->format(number, appendTo, pos);
|
|
}
|
|
// Get the appropriate sub-message.
|
|
int32_t partIndex = findSubMessage(msgPattern, 0, pluralRulesWrapper, number, status);
|
|
// Replace syntactic # signs in the top level of this sub-message
|
|
// (not in nested arguments) with the formatted number-offset.
|
|
const UnicodeString& pattern = msgPattern.getPatternString();
|
|
number -= offset;
|
|
int32_t prevIndex = msgPattern.getPart(partIndex).getLimit();
|
|
for (;;) {
|
|
const MessagePattern::Part& part = msgPattern.getPart(++partIndex);
|
|
const UMessagePatternPartType type = part.getType();
|
|
int32_t index = part.getIndex();
|
|
if (type == UMSGPAT_PART_TYPE_MSG_LIMIT) {
|
|
return appendTo.append(pattern, prevIndex, index - prevIndex);
|
|
} else if ((type == UMSGPAT_PART_TYPE_REPLACE_NUMBER) ||
|
|
(type == UMSGPAT_PART_TYPE_SKIP_SYNTAX && MessageImpl::jdkAposMode(msgPattern))) {
|
|
appendTo.append(pattern, prevIndex, index - prevIndex);
|
|
if (type == UMSGPAT_PART_TYPE_REPLACE_NUMBER) {
|
|
numberFormat->format(number, appendTo);
|
|
}
|
|
prevIndex = part.getLimit();
|
|
} else if (type == UMSGPAT_PART_TYPE_ARG_START) {
|
|
appendTo.append(pattern, prevIndex, index - prevIndex);
|
|
prevIndex = index;
|
|
partIndex = msgPattern.getLimitPartIndex(partIndex);
|
|
index = msgPattern.getPart(partIndex).getLimit();
|
|
MessageImpl::appendReducedApostrophes(pattern, prevIndex, index, appendTo);
|
|
prevIndex = index;
|
|
}
|
|
}
|
|
}
|
|
|
|
UnicodeString&
|
|
PluralFormat::toPattern(UnicodeString& appendTo) {
|
|
if (0 == msgPattern.countParts()) {
|
|
appendTo.setToBogus();
|
|
} else {
|
|
appendTo.append(msgPattern.getPatternString());
|
|
}
|
|
return appendTo;
|
|
}
|
|
|
|
void
|
|
PluralFormat::setLocale(const Locale& loc, UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
locale = loc;
|
|
msgPattern.clear();
|
|
delete numberFormat;
|
|
offset = 0;
|
|
numberFormat = NULL;
|
|
pluralRulesWrapper.reset();
|
|
init(NULL, status);
|
|
}
|
|
|
|
void
|
|
PluralFormat::setNumberFormat(const NumberFormat* format, UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
NumberFormat* nf = (NumberFormat*)format->clone();
|
|
if (nf != NULL) {
|
|
delete numberFormat;
|
|
numberFormat = nf;
|
|
} else {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
}
|
|
}
|
|
|
|
Format*
|
|
PluralFormat::clone() const
|
|
{
|
|
return new PluralFormat(*this);
|
|
}
|
|
|
|
|
|
PluralFormat&
|
|
PluralFormat::operator=(const PluralFormat& other) {
|
|
if (this != &other) {
|
|
locale = other.locale;
|
|
msgPattern = other.msgPattern;
|
|
offset = other.offset;
|
|
copyObjects(other);
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
UBool
|
|
PluralFormat::operator==(const Format& other) const {
|
|
if (this == &other) {
|
|
return TRUE;
|
|
}
|
|
if (!Format::operator==(other)) {
|
|
return FALSE;
|
|
}
|
|
const PluralFormat& o = (const PluralFormat&)other;
|
|
return
|
|
locale == o.locale &&
|
|
msgPattern == o.msgPattern && // implies same offset
|
|
(numberFormat == NULL) == (o.numberFormat == NULL) &&
|
|
(numberFormat == NULL || *numberFormat == *o.numberFormat) &&
|
|
(pluralRulesWrapper.pluralRules == NULL) == (o.pluralRulesWrapper.pluralRules == NULL) &&
|
|
(pluralRulesWrapper.pluralRules == NULL ||
|
|
*pluralRulesWrapper.pluralRules == *o.pluralRulesWrapper.pluralRules);
|
|
}
|
|
|
|
UBool
|
|
PluralFormat::operator!=(const Format& other) const {
|
|
return !operator==(other);
|
|
}
|
|
|
|
void
|
|
PluralFormat::parseObject(const UnicodeString& /*source*/,
|
|
Formattable& /*result*/,
|
|
ParsePosition& pos) const
|
|
{
|
|
// Parsing not supported.
|
|
pos.setErrorIndex(pos.getIndex());
|
|
}
|
|
|
|
int32_t PluralFormat::findSubMessage(const MessagePattern& pattern, int32_t partIndex,
|
|
const PluralSelector& selector, double number, UErrorCode& ec) {
|
|
if (U_FAILURE(ec)) {
|
|
return 0;
|
|
}
|
|
int32_t count=pattern.countParts();
|
|
double offset;
|
|
const MessagePattern::Part* part=&pattern.getPart(partIndex);
|
|
if (MessagePattern::Part::hasNumericValue(part->getType())) {
|
|
offset=pattern.getNumericValue(*part);
|
|
++partIndex;
|
|
} else {
|
|
offset=0;
|
|
}
|
|
// The keyword is empty until we need to match against non-explicit, not-"other" value.
|
|
// Then we get the keyword from the selector.
|
|
// (In other words, we never call the selector if we match against an explicit value,
|
|
// or if the only non-explicit keyword is "other".)
|
|
UnicodeString keyword;
|
|
UnicodeString other(FALSE, OTHER_STRING, 5);
|
|
// When we find a match, we set msgStart>0 and also set this boolean to true
|
|
// to avoid matching the keyword again (duplicates are allowed)
|
|
// while we continue to look for an explicit-value match.
|
|
UBool haveKeywordMatch=FALSE;
|
|
// msgStart is 0 until we find any appropriate sub-message.
|
|
// We remember the first "other" sub-message if we have not seen any
|
|
// appropriate sub-message before.
|
|
// We remember the first matching-keyword sub-message if we have not seen
|
|
// one of those before.
|
|
// (The parser allows [does not check for] duplicate keywords.
|
|
// We just have to make sure to take the first one.)
|
|
// We avoid matching the keyword twice by also setting haveKeywordMatch=true
|
|
// at the first keyword match.
|
|
// We keep going until we find an explicit-value match or reach the end of the plural style.
|
|
int32_t msgStart=0;
|
|
// Iterate over (ARG_SELECTOR [ARG_INT|ARG_DOUBLE] message) tuples
|
|
// until ARG_LIMIT or end of plural-only pattern.
|
|
do {
|
|
part=&pattern.getPart(partIndex++);
|
|
const UMessagePatternPartType type = part->getType();
|
|
if(type==UMSGPAT_PART_TYPE_ARG_LIMIT) {
|
|
break;
|
|
}
|
|
U_ASSERT (type==UMSGPAT_PART_TYPE_ARG_SELECTOR);
|
|
// part is an ARG_SELECTOR followed by an optional explicit value, and then a message
|
|
if(MessagePattern::Part::hasNumericValue(pattern.getPartType(partIndex))) {
|
|
// explicit value like "=2"
|
|
part=&pattern.getPart(partIndex++);
|
|
if(number==pattern.getNumericValue(*part)) {
|
|
// matches explicit value
|
|
return partIndex;
|
|
}
|
|
} else if(!haveKeywordMatch) {
|
|
// plural keyword like "few" or "other"
|
|
// Compare "other" first and call the selector if this is not "other".
|
|
if(pattern.partSubstringMatches(*part, other)) {
|
|
if(msgStart==0) {
|
|
msgStart=partIndex;
|
|
if(0 == keyword.compare(other)) {
|
|
// This is the first "other" sub-message,
|
|
// and the selected keyword is also "other".
|
|
// Do not match "other" again.
|
|
haveKeywordMatch=TRUE;
|
|
}
|
|
}
|
|
} else {
|
|
if(keyword.isEmpty()) {
|
|
keyword=selector.select(number-offset, ec);
|
|
if(msgStart!=0 && (0 == keyword.compare(other))) {
|
|
// We have already seen an "other" sub-message.
|
|
// Do not match "other" again.
|
|
haveKeywordMatch=TRUE;
|
|
// Skip keyword matching but do getLimitPartIndex().
|
|
}
|
|
}
|
|
if(!haveKeywordMatch && pattern.partSubstringMatches(*part, keyword)) {
|
|
// keyword matches
|
|
msgStart=partIndex;
|
|
// Do not match this keyword again.
|
|
haveKeywordMatch=TRUE;
|
|
}
|
|
}
|
|
}
|
|
partIndex=pattern.getLimitPartIndex(partIndex);
|
|
} while(++partIndex<count);
|
|
return msgStart;
|
|
}
|
|
|
|
PluralFormat::PluralSelector::~PluralSelector() {}
|
|
|
|
PluralFormat::PluralSelectorAdapter::~PluralSelectorAdapter() {
|
|
delete pluralRules;
|
|
}
|
|
|
|
UnicodeString PluralFormat::PluralSelectorAdapter::select(double number,
|
|
UErrorCode& /*ec*/) const {
|
|
return pluralRules->select(number);
|
|
}
|
|
|
|
void PluralFormat::PluralSelectorAdapter::reset() {
|
|
delete pluralRules;
|
|
pluralRules = NULL;
|
|
}
|
|
|
|
|
|
U_NAMESPACE_END
|
|
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
//eof
|