| // © 2016 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2013-2016, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: listformatter.cpp |
| * encoding: UTF-8 |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2012aug27 |
| * created by: Umesh P. Nair |
| */ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| #include "cmemory.h" |
| #include "unicode/fpositer.h" // FieldPositionIterator |
| #include "unicode/listformatter.h" |
| #include "unicode/simpleformatter.h" |
| #include "unicode/ulistformatter.h" |
| #include "unicode/uscript.h" |
| #include "fphdlimp.h" |
| #include "mutex.h" |
| #include "hash.h" |
| #include "cstring.h" |
| #include "uarrsort.h" |
| #include "ulocimp.h" |
| #include "charstr.h" |
| #include "ucln_in.h" |
| #include "uresimp.h" |
| #include "resource.h" |
| #include "formattedval_impl.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| namespace { |
| |
| class PatternHandler : public UObject { |
| public: |
| PatternHandler(const UnicodeString& two, const UnicodeString& end, UErrorCode& errorCode) : |
| twoPattern(two, 2, 2, errorCode), |
| endPattern(end, 2, 2, errorCode) { } |
| |
| PatternHandler(const SimpleFormatter& two, const SimpleFormatter& end) : |
| twoPattern(two), |
| endPattern(end) { } |
| |
| virtual ~PatternHandler(); |
| |
| virtual PatternHandler* clone() const { return new PatternHandler(twoPattern, endPattern); } |
| |
| /** Argument: final string in the list. */ |
| virtual const SimpleFormatter& getTwoPattern(const UnicodeString&) const { |
| return twoPattern; |
| } |
| |
| /** Argument: final string in the list. */ |
| virtual const SimpleFormatter& getEndPattern(const UnicodeString&) const { |
| return endPattern; |
| } |
| |
| protected: |
| SimpleFormatter twoPattern; |
| SimpleFormatter endPattern; |
| }; |
| |
| PatternHandler::~PatternHandler() { |
| } |
| |
| class ContextualHandler : public PatternHandler { |
| public: |
| ContextualHandler(bool (*testFunc)(const UnicodeString& text), |
| const UnicodeString& thenTwo, |
| const UnicodeString& elseTwo, |
| const UnicodeString& thenEnd, |
| const UnicodeString& elseEnd, |
| UErrorCode& errorCode) : |
| PatternHandler(elseTwo, elseEnd, errorCode), |
| test(testFunc), |
| thenTwoPattern(thenTwo, 2, 2, errorCode), |
| thenEndPattern(thenEnd, 2, 2, errorCode) { } |
| |
| ContextualHandler(bool (*testFunc)(const UnicodeString& text), |
| const SimpleFormatter& thenTwo, SimpleFormatter elseTwo, |
| const SimpleFormatter& thenEnd, SimpleFormatter elseEnd) : |
| PatternHandler(elseTwo, elseEnd), |
| test(testFunc), |
| thenTwoPattern(thenTwo), |
| thenEndPattern(thenEnd) { } |
| |
| ~ContextualHandler() override; |
| |
| PatternHandler* clone() const override { |
| return new ContextualHandler( |
| test, thenTwoPattern, twoPattern, thenEndPattern, endPattern); |
| } |
| |
| const SimpleFormatter& getTwoPattern( |
| const UnicodeString& text) const override { |
| return (test)(text) ? thenTwoPattern : twoPattern; |
| } |
| |
| const SimpleFormatter& getEndPattern( |
| const UnicodeString& text) const override { |
| return (test)(text) ? thenEndPattern : endPattern; |
| } |
| |
| private: |
| bool (*test)(const UnicodeString&); |
| SimpleFormatter thenTwoPattern; |
| SimpleFormatter thenEndPattern; |
| }; |
| |
| ContextualHandler::~ContextualHandler() { |
| } |
| |
| static const char16_t *spanishY = u"{0} y {1}"; |
| static const char16_t *spanishE = u"{0} e {1}"; |
| static const char16_t *spanishO = u"{0} o {1}"; |
| static const char16_t *spanishU = u"{0} u {1}"; |
| static const char16_t *hebrewVav = u"{0} \u05D5{1}"; |
| static const char16_t *hebrewVavDash = u"{0} \u05D5-{1}"; |
| |
| // Condiction to change to e. |
| // Starts with "hi" or "i" but not with "hie" nor "hia" |
| static bool shouldChangeToE(const UnicodeString& text) { |
| int32_t len = text.length(); |
| if (len == 0) { return false; } |
| // Case insensitive match hi but not hie nor hia. |
| if ((text[0] == u'h' || text[0] == u'H') && |
| ((len > 1) && (text[1] == u'i' || text[1] == u'I')) && |
| ((len == 2) || !(text[2] == u'a' || text[2] == u'A' || text[2] == u'e' || text[2] == u'E'))) { |
| return true; |
| } |
| // Case insensitive for "start with i" |
| if (text[0] == u'i' || text[0] == u'I') { return true; } |
| return false; |
| } |
| |
| // Condiction to change to u. |
| // Starts with "o", "ho", and "8". Also "11" by itself. |
| // re: ^((o|ho|8).*|11)$ |
| static bool shouldChangeToU(const UnicodeString& text) { |
| int32_t len = text.length(); |
| if (len == 0) { return false; } |
| // Case insensitive match o.* and 8.* |
| if (text[0] == u'o' || text[0] == u'O' || text[0] == u'8') { return true; } |
| // Case insensitive match ho.* |
| if ((text[0] == u'h' || text[0] == u'H') && |
| ((len > 1) && (text[1] == 'o' || text[1] == u'O'))) { |
| return true; |
| } |
| // match "^11$" and "^11 .*" |
| if ((len >= 2) && text[0] == u'1' && text[1] == u'1' && (len == 2 || text[2] == u' ')) { return true; } |
| return false; |
| } |
| |
| // Condiction to change to VAV follow by a dash. |
| // Starts with non Hebrew letter. |
| static bool shouldChangeToVavDash(const UnicodeString& text) { |
| if (text.isEmpty()) { return false; } |
| UErrorCode status = U_ZERO_ERROR; |
| return uscript_getScript(text.char32At(0), &status) != USCRIPT_HEBREW; |
| } |
| |
| PatternHandler* createPatternHandler( |
| const char* lang, const UnicodeString& two, const UnicodeString& end, |
| UErrorCode& status) { |
| if (uprv_strcmp(lang, "es") == 0) { |
| // Spanish |
| UnicodeString spanishYStr(true, spanishY, -1); |
| bool twoIsY = two == spanishYStr; |
| bool endIsY = end == spanishYStr; |
| if (twoIsY || endIsY) { |
| UnicodeString replacement(true, spanishE, -1); |
| return new ContextualHandler( |
| shouldChangeToE, |
| twoIsY ? replacement : two, two, |
| endIsY ? replacement : end, end, status); |
| } |
| UnicodeString spanishOStr(true, spanishO, -1); |
| bool twoIsO = two == spanishOStr; |
| bool endIsO = end == spanishOStr; |
| if (twoIsO || endIsO) { |
| UnicodeString replacement(true, spanishU, -1); |
| return new ContextualHandler( |
| shouldChangeToU, |
| twoIsO ? replacement : two, two, |
| endIsO ? replacement : end, end, status); |
| } |
| } else if (uprv_strcmp(lang, "he") == 0 || uprv_strcmp(lang, "iw") == 0) { |
| // Hebrew |
| UnicodeString hebrewVavStr(true, hebrewVav, -1); |
| bool twoIsVav = two == hebrewVavStr; |
| bool endIsVav = end == hebrewVavStr; |
| if (twoIsVav || endIsVav) { |
| UnicodeString replacement(true, hebrewVavDash, -1); |
| return new ContextualHandler( |
| shouldChangeToVavDash, |
| twoIsVav ? replacement : two, two, |
| endIsVav ? replacement : end, end, status); |
| } |
| } |
| return new PatternHandler(two, end, status); |
| } |
| |
| } // namespace |
| |
| struct ListFormatInternal : public UMemory { |
| SimpleFormatter startPattern; |
| SimpleFormatter middlePattern; |
| LocalPointer<PatternHandler> patternHandler; |
| |
| ListFormatInternal( |
| const UnicodeString& two, |
| const UnicodeString& start, |
| const UnicodeString& middle, |
| const UnicodeString& end, |
| const Locale& locale, |
| UErrorCode &errorCode) : |
| startPattern(start, 2, 2, errorCode), |
| middlePattern(middle, 2, 2, errorCode), |
| patternHandler(createPatternHandler(locale.getLanguage(), two, end, errorCode), errorCode) { } |
| |
| ListFormatInternal(const ListFormatData &data, UErrorCode &errorCode) : |
| startPattern(data.startPattern, errorCode), |
| middlePattern(data.middlePattern, errorCode), |
| patternHandler(createPatternHandler( |
| data.locale.getLanguage(), data.twoPattern, data.endPattern, errorCode), errorCode) { } |
| |
| ListFormatInternal(const ListFormatInternal &other) : |
| startPattern(other.startPattern), |
| middlePattern(other.middlePattern), |
| patternHandler(other.patternHandler->clone()) { } |
| }; |
| |
| |
| class FormattedListData : public FormattedValueStringBuilderImpl { |
| public: |
| FormattedListData(UErrorCode&) : FormattedValueStringBuilderImpl(kUndefinedField) {} |
| virtual ~FormattedListData(); |
| }; |
| |
| FormattedListData::~FormattedListData() = default; |
| |
| UPRV_FORMATTED_VALUE_SUBCLASS_AUTO_IMPL(FormattedList) |
| |
| |
| static Hashtable* listPatternHash = nullptr; |
| |
| U_CDECL_BEGIN |
| static UBool U_CALLCONV uprv_listformatter_cleanup() { |
| delete listPatternHash; |
| listPatternHash = nullptr; |
| return true; |
| } |
| |
| static void U_CALLCONV |
| uprv_deleteListFormatInternal(void *obj) { |
| delete static_cast<ListFormatInternal *>(obj); |
| } |
| |
| U_CDECL_END |
| |
| ListFormatter::ListFormatter(const ListFormatter& other) : |
| owned(other.owned), data(other.data) { |
| if (other.owned != nullptr) { |
| owned = new ListFormatInternal(*other.owned); |
| data = owned; |
| } |
| } |
| |
| ListFormatter& ListFormatter::operator=(const ListFormatter& other) { |
| if (this == &other) { |
| return *this; |
| } |
| delete owned; |
| if (other.owned) { |
| owned = new ListFormatInternal(*other.owned); |
| data = owned; |
| } else { |
| owned = nullptr; |
| data = other.data; |
| } |
| return *this; |
| } |
| |
| void ListFormatter::initializeHash(UErrorCode& errorCode) { |
| if (U_FAILURE(errorCode)) { |
| return; |
| } |
| |
| listPatternHash = new Hashtable(); |
| if (listPatternHash == nullptr) { |
| errorCode = U_MEMORY_ALLOCATION_ERROR; |
| return; |
| } |
| |
| listPatternHash->setValueDeleter(uprv_deleteListFormatInternal); |
| ucln_i18n_registerCleanup(UCLN_I18N_LIST_FORMATTER, uprv_listformatter_cleanup); |
| |
| } |
| |
| const ListFormatInternal* ListFormatter::getListFormatInternal( |
| const Locale& locale, const char *style, UErrorCode& errorCode) { |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| CharString keyBuffer(locale.getName(), errorCode); |
| keyBuffer.append(':', errorCode).append(style, errorCode); |
| UnicodeString key(keyBuffer.data(), -1, US_INV); |
| ListFormatInternal* result = nullptr; |
| static UMutex listFormatterMutex; |
| { |
| Mutex m(&listFormatterMutex); |
| if (listPatternHash == nullptr) { |
| initializeHash(errorCode); |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| } |
| result = static_cast<ListFormatInternal*>(listPatternHash->get(key)); |
| } |
| if (result != nullptr) { |
| return result; |
| } |
| result = loadListFormatInternal(locale, style, errorCode); |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| |
| { |
| Mutex m(&listFormatterMutex); |
| ListFormatInternal* temp = static_cast<ListFormatInternal*>(listPatternHash->get(key)); |
| if (temp != nullptr) { |
| delete result; |
| result = temp; |
| } else { |
| listPatternHash->put(key, result, errorCode); |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| } |
| } |
| return result; |
| } |
| |
| static const char* typeWidthToStyleString(UListFormatterType type, UListFormatterWidth width) { |
| switch (type) { |
| case ULISTFMT_TYPE_AND: |
| switch (width) { |
| case ULISTFMT_WIDTH_WIDE: |
| return "standard"; |
| case ULISTFMT_WIDTH_SHORT: |
| return "standard-short"; |
| case ULISTFMT_WIDTH_NARROW: |
| return "standard-narrow"; |
| default: |
| return nullptr; |
| } |
| break; |
| |
| case ULISTFMT_TYPE_OR: |
| switch (width) { |
| case ULISTFMT_WIDTH_WIDE: |
| return "or"; |
| case ULISTFMT_WIDTH_SHORT: |
| return "or-short"; |
| case ULISTFMT_WIDTH_NARROW: |
| return "or-narrow"; |
| default: |
| return nullptr; |
| } |
| break; |
| |
| case ULISTFMT_TYPE_UNITS: |
| switch (width) { |
| case ULISTFMT_WIDTH_WIDE: |
| return "unit"; |
| case ULISTFMT_WIDTH_SHORT: |
| return "unit-short"; |
| case ULISTFMT_WIDTH_NARROW: |
| return "unit-narrow"; |
| default: |
| return nullptr; |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| static const UChar solidus = 0x2F; |
| static const UChar aliasPrefix[] = { 0x6C,0x69,0x73,0x74,0x50,0x61,0x74,0x74,0x65,0x72,0x6E,0x2F }; // "listPattern/" |
| enum { |
| kAliasPrefixLen = UPRV_LENGTHOF(aliasPrefix), |
| kStyleLenMax = 24 // longest currently is 14 |
| }; |
| |
| struct ListFormatter::ListPatternsSink : public ResourceSink { |
| UnicodeString two, start, middle, end; |
| #if ((U_PLATFORM == U_PF_AIX) || (U_PLATFORM == U_PF_OS390)) && (U_CPLUSPLUS_VERSION < 11) |
| char aliasedStyle[kStyleLenMax+1]; |
| ListPatternsSink() { |
| uprv_memset(aliasedStyle, 0, kStyleLenMax+1); |
| } |
| #else |
| char aliasedStyle[kStyleLenMax+1] = {0}; |
| |
| ListPatternsSink() {} |
| #endif |
| virtual ~ListPatternsSink(); |
| |
| void setAliasedStyle(UnicodeString alias) { |
| int32_t startIndex = alias.indexOf(aliasPrefix, kAliasPrefixLen, 0); |
| if (startIndex < 0) { |
| return; |
| } |
| startIndex += kAliasPrefixLen; |
| int32_t endIndex = alias.indexOf(solidus, startIndex); |
| if (endIndex < 0) { |
| endIndex = alias.length(); |
| } |
| alias.extract(startIndex, endIndex-startIndex, aliasedStyle, kStyleLenMax+1, US_INV); |
| aliasedStyle[kStyleLenMax] = 0; |
| } |
| |
| void handleValueForPattern(ResourceValue &value, UnicodeString &pattern, UErrorCode &errorCode) { |
| if (pattern.isEmpty()) { |
| if (value.getType() == URES_ALIAS) { |
| if (aliasedStyle[0] == 0) { |
| setAliasedStyle(value.getAliasUnicodeString(errorCode)); |
| } |
| } else { |
| pattern = value.getUnicodeString(errorCode); |
| } |
| } |
| } |
| |
| virtual void put(const char *key, ResourceValue &value, UBool /*noFallback*/, |
| UErrorCode &errorCode) { |
| aliasedStyle[0] = 0; |
| if (value.getType() == URES_ALIAS) { |
| setAliasedStyle(value.getAliasUnicodeString(errorCode)); |
| return; |
| } |
| ResourceTable listPatterns = value.getTable(errorCode); |
| for (int i = 0; U_SUCCESS(errorCode) && listPatterns.getKeyAndValue(i, key, value); ++i) { |
| if (uprv_strcmp(key, "2") == 0) { |
| handleValueForPattern(value, two, errorCode); |
| } else if (uprv_strcmp(key, "end") == 0) { |
| handleValueForPattern(value, end, errorCode); |
| } else if (uprv_strcmp(key, "middle") == 0) { |
| handleValueForPattern(value, middle, errorCode); |
| } else if (uprv_strcmp(key, "start") == 0) { |
| handleValueForPattern(value, start, errorCode); |
| } |
| } |
| } |
| }; |
| |
| // Virtual destructors must be defined out of line. |
| ListFormatter::ListPatternsSink::~ListPatternsSink() {} |
| |
| ListFormatInternal* ListFormatter::loadListFormatInternal( |
| const Locale& locale, const char * style, UErrorCode& errorCode) { |
| UResourceBundle* rb = ures_open(nullptr, locale.getName(), &errorCode); |
| rb = ures_getByKeyWithFallback(rb, "listPattern", rb, &errorCode); |
| if (U_FAILURE(errorCode)) { |
| ures_close(rb); |
| return nullptr; |
| } |
| ListFormatter::ListPatternsSink sink; |
| char currentStyle[kStyleLenMax+1]; |
| uprv_strncpy(currentStyle, style, kStyleLenMax); |
| currentStyle[kStyleLenMax] = 0; |
| |
| for (;;) { |
| ures_getAllItemsWithFallback(rb, currentStyle, sink, errorCode); |
| if (U_FAILURE(errorCode) || sink.aliasedStyle[0] == 0 || uprv_strcmp(currentStyle, sink.aliasedStyle) == 0) { |
| break; |
| } |
| uprv_strcpy(currentStyle, sink.aliasedStyle); |
| } |
| ures_close(rb); |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| if (sink.two.isEmpty() || sink.start.isEmpty() || sink.middle.isEmpty() || sink.end.isEmpty()) { |
| errorCode = U_MISSING_RESOURCE_ERROR; |
| return nullptr; |
| } |
| |
| ListFormatInternal* result = new ListFormatInternal(sink.two, sink.start, sink.middle, sink.end, locale, errorCode); |
| if (result == nullptr) { |
| errorCode = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| if (U_FAILURE(errorCode)) { |
| delete result; |
| return nullptr; |
| } |
| return result; |
| } |
| |
| ListFormatter* ListFormatter::createInstance(UErrorCode& errorCode) { |
| Locale locale; // The default locale. |
| return createInstance(locale, errorCode); |
| } |
| |
| ListFormatter* ListFormatter::createInstance(const Locale& locale, UErrorCode& errorCode) { |
| return createInstance(locale, ULISTFMT_TYPE_AND, ULISTFMT_WIDTH_WIDE, errorCode); |
| } |
| |
| ListFormatter* ListFormatter::createInstance( |
| const Locale& locale, UListFormatterType type, UListFormatterWidth width, UErrorCode& errorCode) { |
| const char* style = typeWidthToStyleString(type, width); |
| if (style == nullptr) { |
| errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| return nullptr; |
| } |
| return createInstance(locale, style, errorCode); |
| } |
| |
| ListFormatter* ListFormatter::createInstance(const Locale& locale, const char *style, UErrorCode& errorCode) { |
| const ListFormatInternal* listFormatInternal = getListFormatInternal(locale, style, errorCode); |
| if (U_FAILURE(errorCode)) { |
| return nullptr; |
| } |
| ListFormatter* p = new ListFormatter(listFormatInternal); |
| if (p == nullptr) { |
| errorCode = U_MEMORY_ALLOCATION_ERROR; |
| return nullptr; |
| } |
| return p; |
| } |
| |
| ListFormatter::ListFormatter(const ListFormatData& listFormatData, UErrorCode &errorCode) { |
| owned = new ListFormatInternal(listFormatData, errorCode); |
| data = owned; |
| } |
| |
| ListFormatter::ListFormatter(const ListFormatInternal* listFormatterInternal) : owned(nullptr), data(listFormatterInternal) { |
| } |
| |
| ListFormatter::~ListFormatter() { |
| delete owned; |
| } |
| |
| namespace { |
| |
| class FormattedListBuilder { |
| public: |
| LocalPointer<FormattedListData> data; |
| |
| /** For lists of length 1+ */ |
| FormattedListBuilder(const UnicodeString& start, UErrorCode& status) |
| : data(new FormattedListData(status), status) { |
| if (U_SUCCESS(status)) { |
| data->getStringRef().append( |
| start, |
| {UFIELD_CATEGORY_LIST, ULISTFMT_ELEMENT_FIELD}, |
| status); |
| data->appendSpanInfo(UFIELD_CATEGORY_LIST_SPAN, 0, -1, start.length(), status); |
| } |
| } |
| |
| /** For lists of length 0 */ |
| FormattedListBuilder(UErrorCode& status) |
| : data(new FormattedListData(status), status) { |
| } |
| |
| void append(const SimpleFormatter& pattern, const UnicodeString& next, int32_t position, UErrorCode& status) { |
| if (U_FAILURE(status)) { |
| return; |
| } |
| if (pattern.getArgumentLimit() != 2) { |
| status = U_INTERNAL_PROGRAM_ERROR; |
| return; |
| } |
| // In the pattern, {0} are the pre-existing elements and {1} is the new element. |
| int32_t offsets[] = {0, 0}; |
| UnicodeString temp = pattern.getTextWithNoArguments(offsets, 2); |
| if (offsets[0] <= offsets[1]) { |
| // prefix{0}infix{1}suffix |
| // Prepend prefix, then append infix, element, and suffix |
| data->getStringRef().insert( |
| 0, |
| temp.tempSubStringBetween(0, offsets[0]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| data->getStringRef().append( |
| temp.tempSubStringBetween(offsets[0], offsets[1]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| data->getStringRef().append( |
| next, |
| {UFIELD_CATEGORY_LIST, ULISTFMT_ELEMENT_FIELD}, |
| status); |
| data->appendSpanInfo(UFIELD_CATEGORY_LIST_SPAN, position, -1, next.length(), status); |
| data->getStringRef().append( |
| temp.tempSubString(offsets[1]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| } else { |
| // prefix{1}infix{0}suffix |
| // Prepend infix, element, and prefix, then append suffix. |
| // (We prepend in reverse order because prepending at index 0 is fast.) |
| data->getStringRef().insert( |
| 0, |
| temp.tempSubStringBetween(offsets[1], offsets[0]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| data->getStringRef().insert( |
| 0, |
| next, |
| {UFIELD_CATEGORY_LIST, ULISTFMT_ELEMENT_FIELD}, |
| status); |
| data->prependSpanInfo(UFIELD_CATEGORY_LIST_SPAN, position, -1, next.length(), status); |
| data->getStringRef().insert( |
| 0, |
| temp.tempSubStringBetween(0, offsets[1]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| data->getStringRef().append( |
| temp.tempSubString(offsets[0]), |
| {UFIELD_CATEGORY_LIST, ULISTFMT_LITERAL_FIELD}, |
| status); |
| } |
| } |
| }; |
| |
| } |
| |
| UnicodeString& ListFormatter::format( |
| const UnicodeString items[], |
| int32_t nItems, |
| UnicodeString& appendTo, |
| UErrorCode& errorCode) const { |
| int32_t offset; |
| return format(items, nItems, appendTo, -1, offset, errorCode); |
| } |
| |
| UnicodeString& ListFormatter::format( |
| const UnicodeString items[], |
| int32_t nItems, |
| UnicodeString& appendTo, |
| int32_t index, |
| int32_t &offset, |
| UErrorCode& errorCode) const { |
| int32_t initialOffset = appendTo.length(); |
| auto result = formatStringsToValue(items, nItems, errorCode); |
| UnicodeStringAppendable appendable(appendTo); |
| result.appendTo(appendable, errorCode); |
| if (index >= 0) { |
| ConstrainedFieldPosition cfpos; |
| cfpos.constrainField(UFIELD_CATEGORY_LIST_SPAN, index); |
| result.nextPosition(cfpos, errorCode); |
| offset = initialOffset + cfpos.getStart(); |
| } |
| return appendTo; |
| } |
| |
| FormattedList ListFormatter::formatStringsToValue( |
| const UnicodeString items[], |
| int32_t nItems, |
| UErrorCode& errorCode) const { |
| if (nItems == 0) { |
| FormattedListBuilder result(errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } else { |
| return FormattedList(result.data.orphan()); |
| } |
| } else if (nItems == 1) { |
| FormattedListBuilder result(items[0], errorCode); |
| result.data->getStringRef().writeTerminator(errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } else { |
| return FormattedList(result.data.orphan()); |
| } |
| } else if (nItems == 2) { |
| FormattedListBuilder result(items[0], errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } |
| result.append( |
| data->patternHandler->getTwoPattern(items[1]), |
| items[1], |
| 1, |
| errorCode); |
| result.data->getStringRef().writeTerminator(errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } else { |
| return FormattedList(result.data.orphan()); |
| } |
| } |
| |
| FormattedListBuilder result(items[0], errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } |
| result.append( |
| data->startPattern, |
| items[1], |
| 1, |
| errorCode); |
| for (int32_t i = 2; i < nItems - 1; i++) { |
| result.append( |
| data->middlePattern, |
| items[i], |
| i, |
| errorCode); |
| } |
| result.append( |
| data->patternHandler->getEndPattern(items[nItems-1]), |
| items[nItems-1], |
| nItems-1, |
| errorCode); |
| result.data->getStringRef().writeTerminator(errorCode); |
| if (U_FAILURE(errorCode)) { |
| return FormattedList(errorCode); |
| } else { |
| return FormattedList(result.data.orphan()); |
| } |
| } |
| |
| |
| U_NAMESPACE_END |
| |
| #endif /* #if !UCONFIG_NO_FORMATTING */ |
