The Tor Browser: intl/icu/source/i18n/tmutfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/tmutfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/tmutfmt.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  *******************************************************************************
  * Copyright (C) 2008-2013, Google, International Business Machines Corporation
  * and others. All Rights Reserved.
  *******************************************************************************
  */
 #include "utypeinfo.h"  // for 'typeid' to work
 #include "unicode/tmutfmt.h"
 #if !UCONFIG_NO_FORMATTING
 #include "uvector.h"
 #include "charstr.h"
 #include "cmemory.h"
 #include "cstring.h"
 #include "hash.h"
 #include "uresimp.h"
 #include "unicode/msgfmt.h"
 #include "uassert.h"
 #define LEFT_CURLY_BRACKET  ((UChar)0x007B)
 #define RIGHT_CURLY_BRACKET ((UChar)0x007D)
 #define SPACE             ((UChar)0x0020)
 #define DIGIT_ZERO        ((UChar)0x0030)
 #define LOW_S             ((UChar)0x0073)
 #define LOW_M             ((UChar)0x006D)
 #define LOW_I             ((UChar)0x0069)
 #define LOW_N             ((UChar)0x006E)
 #define LOW_H             ((UChar)0x0068)
 #define LOW_W             ((UChar)0x0077)
 #define LOW_D             ((UChar)0x0064)
 #define LOW_Y             ((UChar)0x0079)
 #define LOW_Z             ((UChar)0x007A)
 #define LOW_E             ((UChar)0x0065)
 #define LOW_R             ((UChar)0x0072)
 #define LOW_O             ((UChar)0x006F)
 #define LOW_N             ((UChar)0x006E)
 #define LOW_T             ((UChar)0x0074)
 //TODO: define in compile time
 //#define TMUTFMT_DEBUG 1
 #ifdef TMUTFMT_DEBUG
 #include <iostream>
 #endif
 U_NAMESPACE_BEGIN
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TimeUnitFormat)
 static const char gUnitsTag[] = "units";
 static const char gShortUnitsTag[] = "unitsShort";
 static const char gTimeUnitYear[] = "year";
 static const char gTimeUnitMonth[] = "month";
 static const char gTimeUnitDay[] = "day";
 static const char gTimeUnitWeek[] = "week";
 static const char gTimeUnitHour[] = "hour";
 static const char gTimeUnitMinute[] = "minute";
 static const char gTimeUnitSecond[] = "second";
 static const char gPluralCountOther[] = "other";
 static const UChar DEFAULT_PATTERN_FOR_SECOND[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_S, 0};
 static const UChar DEFAULT_PATTERN_FOR_MINUTE[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_M, LOW_I, LOW_N, 0};
 static const UChar DEFAULT_PATTERN_FOR_HOUR[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_H, 0};
 static const UChar DEFAULT_PATTERN_FOR_WEEK[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_W, 0};
 static const UChar DEFAULT_PATTERN_FOR_DAY[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_D, 0};
 static const UChar DEFAULT_PATTERN_FOR_MONTH[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_M, 0};
 static const UChar DEFAULT_PATTERN_FOR_YEAR[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, LOW_Y, 0};
 static const UChar PLURAL_COUNT_ZERO[] = {LOW_Z, LOW_E, LOW_R, LOW_O, 0};
 static const UChar PLURAL_COUNT_ONE[] = {LOW_O, LOW_N, LOW_E, 0};
 static const UChar PLURAL_COUNT_TWO[] = {LOW_T, LOW_W, LOW_O, 0};
 TimeUnitFormat::TimeUnitFormat(UErrorCode& status)
 :   fNumberFormat(NULL),
     fPluralRules(NULL) {
     create(Locale::getDefault(), UTMUTFMT_FULL_STYLE, status);
 }
 TimeUnitFormat::TimeUnitFormat(const Locale& locale, UErrorCode& status)
 :   fNumberFormat(NULL),
     fPluralRules(NULL) {
     create(locale, UTMUTFMT_FULL_STYLE, status);
 }
 TimeUnitFormat::TimeUnitFormat(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status)
 :   fNumberFormat(NULL),
     fPluralRules(NULL) {
     create(locale, style, status);
 }
 TimeUnitFormat::TimeUnitFormat(const TimeUnitFormat& other)
 :   MeasureFormat(other),
     fNumberFormat(NULL),
     fPluralRules(NULL),
     fStyle(UTMUTFMT_FULL_STYLE)
 {
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         fTimeUnitToCountToPatterns[i] = NULL;
     }
     *this = other;
 }
 TimeUnitFormat::~TimeUnitFormat() {
     delete fNumberFormat;
     fNumberFormat = NULL;
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         deleteHash(fTimeUnitToCountToPatterns[i]);
         fTimeUnitToCountToPatterns[i] = NULL;
     }
     delete fPluralRules;
     fPluralRules = NULL;
 }
 Format*
 TimeUnitFormat::clone(void) const {
     return new TimeUnitFormat(*this);
 }
 TimeUnitFormat&
 TimeUnitFormat::operator=(const TimeUnitFormat& other) {
     if (this == &other) {
         return *this;
     }
     delete fNumberFormat;
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         deleteHash(fTimeUnitToCountToPatterns[i]);
         fTimeUnitToCountToPatterns[i] = NULL;
     }
     delete fPluralRules;
     if (other.fNumberFormat) {
         fNumberFormat = (NumberFormat*)other.fNumberFormat->clone();
     } else {
         fNumberFormat = NULL;
     }
     fLocale = other.fLocale;
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         UErrorCode status = U_ZERO_ERROR;
         fTimeUnitToCountToPatterns[i] = initHash(status);
         if (U_SUCCESS(status)) {
             copyHash(other.fTimeUnitToCountToPatterns[i], fTimeUnitToCountToPatterns[i], status);
         } else {
             delete fTimeUnitToCountToPatterns[i];
             fTimeUnitToCountToPatterns[i] = NULL;
         }
     }
     if (other.fPluralRules) {
         fPluralRules = (PluralRules*)other.fPluralRules->clone();
     } else {
         fPluralRules = NULL;
     }
     fStyle = other.fStyle;
     return *this;
 }
 UBool
 TimeUnitFormat::operator==(const Format& other) const {
     if (typeid(*this) == typeid(other)) {
         TimeUnitFormat* fmt = (TimeUnitFormat*)&other;
         UBool ret =  ( ((fNumberFormat && fmt->fNumberFormat && *fNumberFormat == *fmt->fNumberFormat)
                             || fNumberFormat == fmt->fNumberFormat )
                         && fLocale == fmt->fLocale
                         && ((fPluralRules && fmt->fPluralRules && *fPluralRules == *fmt->fPluralRules)
                             || fPluralRules == fmt->fPluralRules)
                         && fStyle == fmt->fStyle);
         if (ret) {
             for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
                  i < TimeUnit::UTIMEUNIT_FIELD_COUNT && ret;
                  i = (TimeUnit::UTimeUnitFields)(i+1)) {
                 ret = fTimeUnitToCountToPatterns[i]->equals(*(fmt->fTimeUnitToCountToPatterns[i]));
             }
         }
         return ret;
     }
     return false;
 }
 UnicodeString&
 TimeUnitFormat::format(const Formattable& obj, UnicodeString& toAppendTo,
                        FieldPosition& pos, UErrorCode& status) const {
     if (U_FAILURE(status)) {
         return toAppendTo;
     }
     if (obj.getType() == Formattable::kObject) {
         const UObject* formatObj = obj.getObject();
         const TimeUnitAmount* amount = dynamic_cast<const TimeUnitAmount*>(formatObj);
         if (amount != NULL){
             Hashtable* countToPattern = fTimeUnitToCountToPatterns[amount->getTimeUnitField()];
             double number;
             const Formattable& amtNumber = amount->getNumber();
             if (amtNumber.getType() == Formattable::kDouble) {
                 number = amtNumber.getDouble();
             } else if (amtNumber.getType() == Formattable::kLong) {
                 number = amtNumber.getLong();
             } else {
                 status = U_ILLEGAL_ARGUMENT_ERROR;
                 return toAppendTo;
             }
             UnicodeString count = fPluralRules->select(number);
 #ifdef TMUTFMT_DEBUG
             char result[1000];
             count.extract(0, count.length(), result, "UTF-8");
             std::cout << "number: " << number << "; format plural count: " << result << "\n";
 #endif
             MessageFormat* pattern = ((MessageFormat**)countToPattern->get(count))[fStyle];
             Formattable formattable[1];
             formattable[0].setDouble(number);
             return pattern->format(formattable, 1, toAppendTo, pos, status);
         }
     }
     status = U_ILLEGAL_ARGUMENT_ERROR;
     return toAppendTo;
 }
 void
 TimeUnitFormat::parseObject(const UnicodeString& source,
                             Formattable& result,
                             ParsePosition& pos) const {
     double resultNumber = -1;
     UBool withNumberFormat = false;
     TimeUnit::UTimeUnitFields resultTimeUnit = TimeUnit::UTIMEUNIT_FIELD_COUNT;
     int32_t oldPos = pos.getIndex();
     int32_t newPos = -1;
     int32_t longestParseDistance = 0;
     UnicodeString* countOfLongestMatch = NULL;
 #ifdef TMUTFMT_DEBUG
     char res[1000];
     source.extract(0, source.length(), res, "UTF-8");
     std::cout << "parse source: " << res << "\n";
 #endif
     // parse by iterating through all available patterns
     // and looking for the longest match.
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         Hashtable* countToPatterns = fTimeUnitToCountToPatterns[i];
         int32_t elemPos = -1;
         const UHashElement* elem = NULL;
         while ((elem = countToPatterns->nextElement(elemPos)) != NULL){
             const UHashTok keyTok = elem->key;
             UnicodeString* count = (UnicodeString*)keyTok.pointer;
 #ifdef TMUTFMT_DEBUG
             count->extract(0, count->length(), res, "UTF-8");
             std::cout << "parse plural count: " << res << "\n";
 #endif
             const UHashTok valueTok = elem->value;
             // the value is a pair of MessageFormat*
             MessageFormat** patterns = (MessageFormat**)valueTok.pointer;
             for (UTimeUnitFormatStyle style = UTMUTFMT_FULL_STYLE; style < UTMUTFMT_FORMAT_STYLE_COUNT;
                  style = (UTimeUnitFormatStyle)(style + 1)) {
                 MessageFormat* pattern = patterns[style];
                 pos.setErrorIndex(-1);
                 pos.setIndex(oldPos);
                 // see if we can parse
                 Formattable parsed;
                 pattern->parseObject(source, parsed, pos);
                 if (pos.getErrorIndex() != -1 || pos.getIndex() == oldPos) {
                     continue;
                 }
     #ifdef TMUTFMT_DEBUG
                 std::cout << "parsed.getType: " << parsed.getType() << "\n";
     #endif
                 double tmpNumber = 0;
                 if (pattern->getArgTypeCount() != 0) {
                     // pattern with Number as beginning, such as "{0} d".
                     // check to make sure that the timeUnit is consistent
                     Formattable& temp = parsed[0];
                     if (temp.getType() == Formattable::kDouble) {
                         tmpNumber = temp.getDouble();
                     } else if (temp.getType() == Formattable::kLong) {
                         tmpNumber = temp.getLong();
                     } else {
                         continue;
                     }
                     UnicodeString select = fPluralRules->select(tmpNumber);
     #ifdef TMUTFMT_DEBUG
                     select.extract(0, select.length(), res, "UTF-8");
                     std::cout << "parse plural select count: " << res << "\n";
     #endif
                     if (*count != select) {
                         continue;
                     }
                 }
                 int32_t parseDistance = pos.getIndex() - oldPos;
                 if (parseDistance > longestParseDistance) {
                     if (pattern->getArgTypeCount() != 0) {
                         resultNumber = tmpNumber;
                         withNumberFormat = true;
                     } else {
                         withNumberFormat = false;
                     }
                     resultTimeUnit = i;
                     newPos = pos.getIndex();
                     longestParseDistance = parseDistance;
                     countOfLongestMatch = count;
                 }
             }
         }
     }
     /* After find the longest match, parse the number.
      * Result number could be null for the pattern without number pattern.
      * such as unit pattern in Arabic.
      * When result number is null, use plural rule to set the number.
      */
     if (withNumberFormat == false && longestParseDistance != 0) {
         // set the number using plurrual count
         if (0 == countOfLongestMatch->compare(PLURAL_COUNT_ZERO, 4)) {
             resultNumber = 0;
         } else if (0 == countOfLongestMatch->compare(PLURAL_COUNT_ONE, 3)) {
             resultNumber = 1;
         } else if (0 == countOfLongestMatch->compare(PLURAL_COUNT_TWO, 3)) {
             resultNumber = 2;
         } else {
             // should not happen.
             // TODO: how to handle?
             resultNumber = 3;
         }
     }
     if (longestParseDistance == 0) {
         pos.setIndex(oldPos);
         pos.setErrorIndex(0);
     } else {
         UErrorCode status = U_ZERO_ERROR;
         TimeUnitAmount* tmutamt = new TimeUnitAmount(resultNumber, resultTimeUnit, status);
         if (U_SUCCESS(status)) {
             result.adoptObject(tmutamt);
             pos.setIndex(newPos);
             pos.setErrorIndex(-1);
         } else {
             pos.setIndex(oldPos);
             pos.setErrorIndex(0);
         }
     }
 }
 void
 TimeUnitFormat::create(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status) {
     if (U_FAILURE(status)) {
         return;
     }
     if (style < UTMUTFMT_FULL_STYLE || style >= UTMUTFMT_FORMAT_STYLE_COUNT) {
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return;
     }
     fStyle = style;
     fLocale = locale;
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         fTimeUnitToCountToPatterns[i] = NULL;
     }
     //TODO: format() and parseObj() are const member functions,
     //so, can not do lazy initialization in C++.
     //setup has to be done in constructors.
     //and here, the behavior is not consistent with Java.
     //In Java, create an empty instance does not setup locale as
     //default locale. If it followed by setNumberFormat(),
     //in format(), the locale will set up as the locale in fNumberFormat.
     //But in C++, this sets the locale as the default locale.
     setup(status);
 }
 void
 TimeUnitFormat::setup(UErrorCode& err) {
     initDataMembers(err);
     UVector pluralCounts(0, uhash_compareUnicodeString, 6, err);
     StringEnumeration* keywords = fPluralRules->getKeywords(err);
     if (U_FAILURE(err)) {
         return;
     }
     UnicodeString* pluralCount;
     while ((pluralCount = const_cast<UnicodeString*>(keywords->snext(err))) != NULL) {
       pluralCounts.addElement(pluralCount, err);
     }
     readFromCurrentLocale(UTMUTFMT_FULL_STYLE, gUnitsTag, pluralCounts, err);
     checkConsistency(UTMUTFMT_FULL_STYLE, gUnitsTag, err);
     readFromCurrentLocale(UTMUTFMT_ABBREVIATED_STYLE, gShortUnitsTag, pluralCounts, err);
     checkConsistency(UTMUTFMT_ABBREVIATED_STYLE, gShortUnitsTag, err);
     delete keywords;
 }
 void
 TimeUnitFormat::initDataMembers(UErrorCode& err){
     if (U_FAILURE(err)) {
         return;
     }
     if (fNumberFormat == NULL) {
         fNumberFormat = NumberFormat::createInstance(fLocale, err);
     }
     delete fPluralRules;
     fPluralRules = PluralRules::forLocale(fLocale, err);
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         deleteHash(fTimeUnitToCountToPatterns[i]);
         fTimeUnitToCountToPatterns[i] = NULL;
     }
 }
 void
 TimeUnitFormat::readFromCurrentLocale(UTimeUnitFormatStyle style, const char* key,
                                       const UVector& pluralCounts, UErrorCode& err) {
     if (U_FAILURE(err)) {
         return;
     }
     // fill timeUnitToCountToPatterns from resource file
     // err is used to indicate wrong status except missing resource.
     // status is an error code used in resource lookup.
     // status does not affect "err".
     UErrorCode status = U_ZERO_ERROR;
     UResourceBundle *rb, *unitsRes;
     rb = ures_open(NULL, fLocale.getName(), &status);
     unitsRes = ures_getByKey(rb, key, NULL, &status);
     unitsRes = ures_getByKey(unitsRes, "duration", unitsRes, &status);
     if (U_FAILURE(status)) {
         ures_close(unitsRes);
         ures_close(rb);
         return;
     }
     int32_t size = ures_getSize(unitsRes);
     for ( int32_t index = 0; index < size; ++index) {
         // resource of one time unit
         UResourceBundle* oneTimeUnit = ures_getByIndex(unitsRes, index,
                                                        NULL, &status);
         if (U_SUCCESS(status)) {
             const char* timeUnitName = ures_getKey(oneTimeUnit);
             if (timeUnitName == NULL) {
                 ures_close(oneTimeUnit);
                 continue;
             }
             UResourceBundle* countsToPatternRB = ures_getByKey(unitsRes,
                                                              timeUnitName,
                                                              NULL, &status);
             if (countsToPatternRB == NULL || U_FAILURE(status)) {
                 ures_close(countsToPatternRB);
                 ures_close(oneTimeUnit);
                 continue;
             }
             TimeUnit::UTimeUnitFields timeUnitField = TimeUnit::UTIMEUNIT_FIELD_COUNT;
             if ( uprv_strcmp(timeUnitName, gTimeUnitYear) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_YEAR;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitMonth) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_MONTH;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitDay) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_DAY;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitHour) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_HOUR;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitMinute) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_MINUTE;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitSecond) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_SECOND;
             } else if ( uprv_strcmp(timeUnitName, gTimeUnitWeek) == 0 ) {
                 timeUnitField = TimeUnit::UTIMEUNIT_WEEK;
             } else {
                 ures_close(countsToPatternRB);
                 ures_close(oneTimeUnit);
                 continue;
             }
             Hashtable* countToPatterns = fTimeUnitToCountToPatterns[timeUnitField];
             if (countToPatterns == NULL) {
                 countToPatterns = initHash(err);
                 if (U_FAILURE(err)) {
                     ures_close(countsToPatternRB);
                     ures_close(oneTimeUnit);
                     delete countToPatterns;
                     break;
                 }
             }
             int32_t count = ures_getSize(countsToPatternRB);
             const char*  pluralCount;
             for ( int32_t pluralIndex = 0; pluralIndex < count; ++pluralIndex) {
                 // resource of count to pattern
                 UnicodeString pattern =
                     ures_getNextUnicodeString(countsToPatternRB, &pluralCount, &status);
                 if (U_FAILURE(status)) {
                     continue;
                 }
                 UnicodeString pluralCountUniStr(pluralCount, -1, US_INV);
                 if (!pluralCounts.contains(&pluralCountUniStr)) {
                   continue;
                 }
                 MessageFormat* messageFormat = new MessageFormat(pattern, fLocale, err);
                 if ( U_SUCCESS(err) ) {
                   if (fNumberFormat != NULL) {
                     messageFormat->setFormat(0, *fNumberFormat);
                   }
                   MessageFormat** formatters = (MessageFormat**)countToPatterns->get(pluralCountUniStr);
                   if (formatters == NULL) {
                     formatters = (MessageFormat**)uprv_malloc(UTMUTFMT_FORMAT_STYLE_COUNT*sizeof(MessageFormat*));
                     formatters[UTMUTFMT_FULL_STYLE] = NULL;
                     formatters[UTMUTFMT_ABBREVIATED_STYLE] = NULL;
                     countToPatterns->put(pluralCountUniStr, formatters, err);
                     if (U_FAILURE(err)) {
                         uprv_free(formatters);
                     }
                   }
                   if (U_SUCCESS(err)) {
                       //delete formatters[style];
                       formatters[style] = messageFormat;
                   }
                 }
                 if (U_FAILURE(err)) {
                     ures_close(countsToPatternRB);
                     ures_close(oneTimeUnit);
                     ures_close(unitsRes);
                     ures_close(rb);
                     delete messageFormat;
                     delete countToPatterns;
                     return;
                 }
             }
             if (fTimeUnitToCountToPatterns[timeUnitField] == NULL) {
                 fTimeUnitToCountToPatterns[timeUnitField] = countToPatterns;
             }
             ures_close(countsToPatternRB);
         }
         ures_close(oneTimeUnit);
     }
     ures_close(unitsRes);
     ures_close(rb);
 }
 void
 TimeUnitFormat::checkConsistency(UTimeUnitFormatStyle style, const char* key, UErrorCode& err) {
     if (U_FAILURE(err)) {
         return;
     }
     // there should be patterns for each plural rule in each time unit.
     // For each time unit,
     //     for each plural rule, following is unit pattern fall-back rule:
     //         ( for example: "one" hour )
     //         look for its unit pattern in its locale tree.
     //         if pattern is not found in its own locale, such as de_DE,
     //         look for the pattern in its parent, such as de,
     //         keep looking till found or till root.
     //         if the pattern is not found in root either,
     //         fallback to plural count "other",
     //         look for the pattern of "other" in the locale tree:
     //         "de_DE" to "de" to "root".
     //         If not found, fall back to value of
     //         static variable DEFAULT_PATTERN_FOR_xxx, such as "{0} h".
     //
     // Following is consistency check to create pattern for each
     // plural rule in each time unit using above fall-back rule.
     //
     StringEnumeration* keywords = fPluralRules->getKeywords(err);
     if (U_SUCCESS(err)) {
         const UnicodeString* pluralCount;
         while ((pluralCount = keywords->snext(err)) != NULL) {
             if ( U_SUCCESS(err) ) {
                 for (int32_t i = 0; i < TimeUnit::UTIMEUNIT_FIELD_COUNT; ++i) {
                     // for each time unit,
                     // get all the patterns for each plural rule in this locale.
                     Hashtable* countToPatterns = fTimeUnitToCountToPatterns[i];
                     if ( countToPatterns == NULL ) {
                         countToPatterns = initHash(err);
                         if (U_FAILURE(err)) {
                             delete countToPatterns;
                             return;
                         }
                         fTimeUnitToCountToPatterns[i] = countToPatterns;
                     }
                     MessageFormat** formatters = (MessageFormat**)countToPatterns->get(*pluralCount);
                     if( formatters == NULL || formatters[style] == NULL ) {
                         // look through parents
                         const char* localeName = fLocale.getName();
                         CharString pluralCountChars;
                         pluralCountChars.appendInvariantChars(*pluralCount, err);
                         searchInLocaleChain(style, key, localeName,
                                             (TimeUnit::UTimeUnitFields)i,
                                             *pluralCount, pluralCountChars.data(),
                                             countToPatterns, err);
                     }
                 }
             }
         }
     }
     delete keywords;
 }
 // srcPluralCount is the original plural count on which the pattern is
 // searched for.
 // searchPluralCount is the fallback plural count.
 // For example, to search for pattern for ""one" hour",
 // "one" is the srcPluralCount,
 // if the pattern is not found even in root, fallback to
 // using patterns of plural count "other",
 // then, "other" is the searchPluralCount.
 void
 TimeUnitFormat::searchInLocaleChain(UTimeUnitFormatStyle style, const char* key, const char* localeName,
                                 TimeUnit::UTimeUnitFields srcTimeUnitField,
                                 const UnicodeString& srcPluralCount,
                                 const char* searchPluralCount,
                                 Hashtable* countToPatterns,
                                 UErrorCode& err) {
     if (U_FAILURE(err)) {
         return;
     }
     UErrorCode status = U_ZERO_ERROR;
     char parentLocale[ULOC_FULLNAME_CAPACITY];
     uprv_strcpy(parentLocale, localeName);
     int32_t locNameLen;
     U_ASSERT(countToPatterns != NULL);
     while ((locNameLen = uloc_getParent(parentLocale, parentLocale,
                                         ULOC_FULLNAME_CAPACITY, &status)) >= 0){
         // look for pattern for srcPluralCount in locale tree
         UResourceBundle *rb, *unitsRes, *countsToPatternRB;
         rb = ures_open(NULL, parentLocale, &status);
         unitsRes = ures_getByKey(rb, key, NULL, &status);
         const char* timeUnitName = getTimeUnitName(srcTimeUnitField, status);
         countsToPatternRB = ures_getByKey(unitsRes, timeUnitName, NULL, &status);
         const UChar* pattern;
         int32_t      ptLength;
         pattern = ures_getStringByKeyWithFallback(countsToPatternRB, searchPluralCount, &ptLength, &status);
         if (U_SUCCESS(status)) {
             //found
             MessageFormat* messageFormat = new MessageFormat(UnicodeString(TRUE, pattern, ptLength), fLocale, err);
             if (U_SUCCESS(err)) {
                 if (fNumberFormat != NULL) {
                     messageFormat->setFormat(0, *fNumberFormat);
                 }
                 MessageFormat** formatters = (MessageFormat**)countToPatterns->get(srcPluralCount);
                 if (formatters == NULL) {
                     formatters = (MessageFormat**)uprv_malloc(UTMUTFMT_FORMAT_STYLE_COUNT*sizeof(MessageFormat*));
                     formatters[UTMUTFMT_FULL_STYLE] = NULL;
                     formatters[UTMUTFMT_ABBREVIATED_STYLE] = NULL;
                     countToPatterns->put(srcPluralCount, formatters, err);
                     if (U_FAILURE(err)) {
                         uprv_free(formatters);
                         delete messageFormat;
                     }
                 }
                 if (U_SUCCESS(err)) {
                     //delete formatters[style];
                     formatters[style] = messageFormat;
                 }
             } else {
                 delete messageFormat;
             }
             ures_close(countsToPatternRB);
             ures_close(unitsRes);
             ures_close(rb);
             return;
         }
         ures_close(countsToPatternRB);
         ures_close(unitsRes);
         ures_close(rb);
         status = U_ZERO_ERROR;
         if ( locNameLen ==0 ) {
             break;
         }
     }
     // if no unitsShort resource was found even after fallback to root locale
     // then search the units resource fallback from the current level to root
     if ( locNameLen == 0 && uprv_strcmp(key, gShortUnitsTag) == 0) {
 #ifdef TMUTFMT_DEBUG
         std::cout << "loop into searchInLocaleChain since Short-Long-Alternative \n";
 #endif
         char pLocale[ULOC_FULLNAME_CAPACITY];
         uprv_strcpy(pLocale, localeName);
         // Add an underscore at the tail of locale name,
         // so that searchInLocaleChain will check the current locale before falling back
         uprv_strcat(pLocale, "_");
         searchInLocaleChain(style, gUnitsTag, pLocale, srcTimeUnitField, srcPluralCount,
                              searchPluralCount, countToPatterns, err);
         MessageFormat** formatters = (MessageFormat**)countToPatterns->get(srcPluralCount);
         if (formatters != NULL && formatters[style] != NULL) {
             return;
         }
     }
     // if not found the pattern for this plural count at all,
     // fall-back to plural count "other"
     if ( uprv_strcmp(searchPluralCount, gPluralCountOther) == 0 ) {
         // set default fall back the same as the resource in root
         MessageFormat* messageFormat = NULL;
         const UChar *pattern = NULL;
         if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_SECOND ) {
             pattern = DEFAULT_PATTERN_FOR_SECOND;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_MINUTE ) {
             pattern = DEFAULT_PATTERN_FOR_MINUTE;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_HOUR ) {
             pattern = DEFAULT_PATTERN_FOR_HOUR;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_WEEK ) {
             pattern = DEFAULT_PATTERN_FOR_WEEK;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_DAY ) {
             pattern = DEFAULT_PATTERN_FOR_DAY;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_MONTH ) {
             pattern = DEFAULT_PATTERN_FOR_MONTH;
         } else if ( srcTimeUnitField == TimeUnit::UTIMEUNIT_YEAR ) {
             pattern = DEFAULT_PATTERN_FOR_YEAR;
         }
         if (pattern != NULL) {
             messageFormat = new MessageFormat(UnicodeString(TRUE, pattern, -1), fLocale, err);
         }
         if (U_SUCCESS(err)) {
             if (fNumberFormat != NULL && messageFormat != NULL) {
                 messageFormat->setFormat(0, *fNumberFormat);
             }
             MessageFormat** formatters = (MessageFormat**)countToPatterns->get(srcPluralCount);
             if (formatters == NULL) {
                 formatters = (MessageFormat**)uprv_malloc(UTMUTFMT_FORMAT_STYLE_COUNT*sizeof(MessageFormat*));
                 formatters[UTMUTFMT_FULL_STYLE] = NULL;
                 formatters[UTMUTFMT_ABBREVIATED_STYLE] = NULL;
                 countToPatterns->put(srcPluralCount, formatters, err);
                 if (U_FAILURE(err)) {
                     uprv_free(formatters);
                     delete messageFormat;
                 }
             }
             if (U_SUCCESS(err)) {
                 //delete formatters[style];
                 formatters[style] = messageFormat;
             }
         } else {
             delete messageFormat;
         }
     } else {
         // fall back to rule "other", and search in parents
         searchInLocaleChain(style, key, localeName, srcTimeUnitField, srcPluralCount,
                             gPluralCountOther, countToPatterns, err);
     }
 }
 void
 TimeUnitFormat::setLocale(const Locale& locale, UErrorCode& status) {
     if (U_SUCCESS(status) && fLocale != locale) {
         fLocale = locale;
         setup(status);
     }
 }
 void
 TimeUnitFormat::setNumberFormat(const NumberFormat& format, UErrorCode& status){
     if (U_FAILURE(status) || (fNumberFormat && format == *fNumberFormat)) {
         return;
     }
     delete fNumberFormat;
     fNumberFormat = (NumberFormat*)format.clone();
     // reset the number formatter in the fTimeUnitToCountToPatterns map
     for (TimeUnit::UTimeUnitFields i = TimeUnit::UTIMEUNIT_YEAR;
          i < TimeUnit::UTIMEUNIT_FIELD_COUNT;
          i = (TimeUnit::UTimeUnitFields)(i+1)) {
         int32_t pos = -1;
         const UHashElement* elem = NULL;
         while ((elem = fTimeUnitToCountToPatterns[i]->nextElement(pos)) != NULL){
             const UHashTok keyTok = elem->value;
             MessageFormat** pattern = (MessageFormat**)keyTok.pointer;
             pattern[UTMUTFMT_FULL_STYLE]->setFormat(0, format);
             pattern[UTMUTFMT_ABBREVIATED_STYLE]->setFormat(0, format);
         }
     }
 }
 void
 TimeUnitFormat::deleteHash(Hashtable* htable) {
     int32_t pos = -1;
     const UHashElement* element = NULL;
     if ( htable ) {
         while ( (element = htable->nextElement(pos)) != NULL ) {
             const UHashTok valueTok = element->value;
             const MessageFormat** value = (const MessageFormat**)valueTok.pointer;
             delete value[UTMUTFMT_FULL_STYLE];
             delete value[UTMUTFMT_ABBREVIATED_STYLE];
             //delete[] value;
             uprv_free(value);
         }
     }
     delete htable;
 }
 void
 TimeUnitFormat::copyHash(const Hashtable* source, Hashtable* target, UErrorCode& status) {
     if ( U_FAILURE(status) ) {
         return;
     }
     int32_t pos = -1;
     const UHashElement* element = NULL;
     if ( source ) {
         while ( (element = source->nextElement(pos)) != NULL ) {
             const UHashTok keyTok = element->key;
             const UnicodeString* key = (UnicodeString*)keyTok.pointer;
             const UHashTok valueTok = element->value;
             const MessageFormat** value = (const MessageFormat**)valueTok.pointer;
             MessageFormat** newVal = (MessageFormat**)uprv_malloc(UTMUTFMT_FORMAT_STYLE_COUNT*sizeof(MessageFormat*));
             newVal[0] = (MessageFormat*)value[0]->clone();
             newVal[1] = (MessageFormat*)value[1]->clone();
             target->put(UnicodeString(*key), newVal, status);
             if ( U_FAILURE(status) ) {
                 delete newVal[0];
                 delete newVal[1];
                 uprv_free(newVal);
                 return;
             }
         }
     }
 }
 U_CDECL_BEGIN
 /**
  * set hash table value comparator
  *
  * @param val1  one value in comparison
  * @param val2  the other value in comparison
  * @return      TRUE if 2 values are the same, FALSE otherwise
  */
 static UBool U_CALLCONV tmutfmtHashTableValueComparator(UHashTok val1, UHashTok val2);
 static UBool
 U_CALLCONV tmutfmtHashTableValueComparator(UHashTok val1, UHashTok val2) {
     const MessageFormat** pattern1 = (const MessageFormat**)val1.pointer;
     const MessageFormat** pattern2 = (const MessageFormat**)val2.pointer;
     return *pattern1[0] == *pattern2[0] && *pattern1[1] == *pattern2[1];
 }
 U_CDECL_END
 Hashtable*
 TimeUnitFormat::initHash(UErrorCode& status) {
     if ( U_FAILURE(status) ) {
         return NULL;
     }
     Hashtable* hTable;
     if ( (hTable = new Hashtable(TRUE, status)) == NULL ) {
         status = U_MEMORY_ALLOCATION_ERROR;
         return NULL;
     }
     if ( U_FAILURE(status) ) {
         delete hTable;
         return NULL;
     }
     hTable->setValueComparator(tmutfmtHashTableValueComparator);
     return hTable;
 }
 const char*
 TimeUnitFormat::getTimeUnitName(TimeUnit::UTimeUnitFields unitField,
                                 UErrorCode& status) {
     if (U_FAILURE(status)) {
         return NULL;
     }
     switch (unitField) {
       case TimeUnit::UTIMEUNIT_YEAR:
         return gTimeUnitYear;
       case TimeUnit::UTIMEUNIT_MONTH:
         return gTimeUnitMonth;
       case TimeUnit::UTIMEUNIT_DAY:
         return gTimeUnitDay;
       case TimeUnit::UTIMEUNIT_WEEK:
         return gTimeUnitWeek;
       case TimeUnit::UTIMEUNIT_HOUR:
         return gTimeUnitHour;
       case TimeUnit::UTIMEUNIT_MINUTE:
         return gTimeUnitMinute;
       case TimeUnit::UTIMEUNIT_SECOND:
         return gTimeUnitSecond;
       default:
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return NULL;
     }
 }
 U_NAMESPACE_END
 #endif

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intl/icu/source/i18n/tmutfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/tmutfmt.cpp