michael@0: /*
michael@0: *******************************************************************************
michael@0: * Copyright (C) 2011-2013, International Business Machines Corporation and
michael@0: * others. All Rights Reserved.
michael@0: *******************************************************************************
michael@0: */
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: 
michael@0: #if !UCONFIG_NO_FORMATTING
michael@0: 
michael@0: #include "unicode/calendar.h"
michael@0: #include "unicode/tzfmt.h"
michael@0: #include "unicode/numsys.h"
michael@0: #include "unicode/uchar.h"
michael@0: #include "unicode/udat.h"
michael@0: #include "tzgnames.h"
michael@0: #include "cmemory.h"
michael@0: #include "cstring.h"
michael@0: #include "putilimp.h"
michael@0: #include "uassert.h"
michael@0: #include "ucln_in.h"
michael@0: #include "umutex.h"
michael@0: #include "uresimp.h"
michael@0: #include "ureslocs.h"
michael@0: #include "uvector.h"
michael@0: #include "zonemeta.h"
michael@0: #include "tznames_impl.h"   // TextTrieMap
michael@0: 
michael@0: U_NAMESPACE_BEGIN
michael@0: 
michael@0: // Bit flags used by the parse method.
michael@0: // The order must match UTimeZoneFormatStyle enum.
michael@0: #define ISO_Z_STYLE_FLAG 0x0080
michael@0: #define ISO_LOCAL_STYLE_FLAG 0x0100
michael@0: static const int16_t STYLE_PARSE_FLAGS[] = {
michael@0:     0x0001, // UTZFMT_STYLE_GENERIC_LOCATION,
michael@0:     0x0002, // UTZFMT_STYLE_GENERIC_LONG,
michael@0:     0x0004, // UTZFMT_STYLE_GENERIC_SHORT,
michael@0:     0x0008, // UTZFMT_STYLE_SPECIFIC_LONG,
michael@0:     0x0010, // UTZFMT_STYLE_SPECIFIC_SHORT,
michael@0:     0x0020, // UTZFMT_STYLE_LOCALIZED_GMT,
michael@0:     0x0040, // UTZFMT_STYLE_LOCALIZED_GMT_SHORT,
michael@0:     ISO_Z_STYLE_FLAG,       // UTZFMT_STYLE_ISO_BASIC_SHORT,
michael@0:     ISO_LOCAL_STYLE_FLAG,   // UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT,
michael@0:     ISO_Z_STYLE_FLAG,       // UTZFMT_STYLE_ISO_BASIC_FIXED,
michael@0:     ISO_LOCAL_STYLE_FLAG,   // UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED,
michael@0:     ISO_Z_STYLE_FLAG,       // UTZFMT_STYLE_ISO_BASIC_FULL,
michael@0:     ISO_LOCAL_STYLE_FLAG,   // UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL,
michael@0:     ISO_Z_STYLE_FLAG,       // UTZFMT_STYLE_ISO_EXTENDED_FIXED,
michael@0:     ISO_LOCAL_STYLE_FLAG,   // UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED,
michael@0:     ISO_Z_STYLE_FLAG,       // UTZFMT_STYLE_ISO_EXTENDED_FULL,
michael@0:     ISO_LOCAL_STYLE_FLAG,   // UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL,
michael@0:     0x0200, // UTZFMT_STYLE_ZONE_ID,
michael@0:     0x0400, // UTZFMT_STYLE_ZONE_ID_SHORT,
michael@0:     0x0800  // UTZFMT_STYLE_EXEMPLAR_LOCATION
michael@0: };
michael@0: 
michael@0: static const char gZoneStringsTag[] = "zoneStrings";
michael@0: static const char gGmtFormatTag[]= "gmtFormat";
michael@0: static const char gGmtZeroFormatTag[] = "gmtZeroFormat";
michael@0: static const char gHourFormatTag[]= "hourFormat";
michael@0: 
michael@0: static const UChar TZID_GMT[] = {0x0045, 0x0074, 0x0063, 0x002F, 0x0047, 0x004D, 0x0054, 0};    // Etc/GMT
michael@0: static const UChar UNKNOWN_ZONE_ID[] = {
michael@0:     0x0045, 0x0074, 0x0063, 0x002F, 0x0055, 0x006E, 0x006B, 0x006E, 0x006F, 0x0077, 0x006E, 0}; // Etc/Unknown
michael@0: static const UChar UNKNOWN_SHORT_ZONE_ID[] = {0x0075, 0x006E, 0x006B, 0};   // unk
michael@0: static const UChar UNKNOWN_LOCATION[] = {0x0055, 0x006E, 0x006B, 0x006E, 0x006F, 0x0077, 0x006E, 0};    // Unknown
michael@0: 
michael@0: static const UChar DEFAULT_GMT_PATTERN[] = {0x0047, 0x004D, 0x0054, 0x007B, 0x0030, 0x007D, 0}; // GMT{0}
michael@0: //static const UChar DEFAULT_GMT_ZERO[] = {0x0047, 0x004D, 0x0054, 0}; // GMT
michael@0: static const UChar DEFAULT_GMT_POSITIVE_HM[] = {0x002B, 0x0048, 0x003A, 0x006D, 0x006D, 0}; // +H:mm
michael@0: static const UChar DEFAULT_GMT_POSITIVE_HMS[] = {0x002B, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0}; // +H:mm:ss
michael@0: static const UChar DEFAULT_GMT_NEGATIVE_HM[] = {0x002D, 0x0048, 0x003A, 0x006D, 0x006D, 0}; // -H:mm
michael@0: static const UChar DEFAULT_GMT_NEGATIVE_HMS[] = {0x002D, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0}; // -H:mm:ss
michael@0: static const UChar DEFAULT_GMT_POSITIVE_H[] = {0x002B, 0x0048, 0}; // +H
michael@0: static const UChar DEFAULT_GMT_NEGATIVE_H[] = {0x002D, 0x0048, 0}; // -H
michael@0: 
michael@0: static const UChar32 DEFAULT_GMT_DIGITS[] = {
michael@0:     0x0030, 0x0031, 0x0032, 0x0033, 0x0034,
michael@0:     0x0035, 0x0036, 0x0037, 0x0038, 0x0039
michael@0: };
michael@0: 
michael@0: static const UChar DEFAULT_GMT_OFFSET_SEP = 0x003A; // ':'
michael@0: 
michael@0: static const UChar ARG0[] = {0x007B, 0x0030, 0x007D};   // "{0}"
michael@0: static const int32_t ARG0_LEN = 3;
michael@0: 
michael@0: static const UChar DEFAULT_GMT_OFFSET_MINUTE_PATTERN[] = {0x006D, 0x006D, 0};   // "mm"
michael@0: static const UChar DEFAULT_GMT_OFFSET_SECOND_PATTERN[] = {0x0073, 0x0073, 0};   // "ss"
michael@0: 
michael@0: static const UChar ALT_GMT_STRINGS[][4] = {
michael@0:     {0x0047, 0x004D, 0x0054, 0},    // GMT
michael@0:     {0x0055, 0x0054, 0x0043, 0},    // UTC
michael@0:     {0x0055, 0x0054, 0, 0},         // UT
michael@0:     {0, 0, 0, 0}
michael@0: };
michael@0: 
michael@0: // Order of GMT offset pattern parsing, *_HMS must be evaluated first
michael@0: // because *_HM is most likely a substring of *_HMS 
michael@0: static const int32_t PARSE_GMT_OFFSET_TYPES[] = {
michael@0:     UTZFMT_PAT_POSITIVE_HMS,
michael@0:     UTZFMT_PAT_NEGATIVE_HMS,
michael@0:     UTZFMT_PAT_POSITIVE_HM,
michael@0:     UTZFMT_PAT_NEGATIVE_HM,
michael@0:     UTZFMT_PAT_POSITIVE_H,
michael@0:     UTZFMT_PAT_NEGATIVE_H,
michael@0:     -1
michael@0: };
michael@0: 
michael@0: static const UChar SINGLEQUOTE  = 0x0027;
michael@0: static const UChar PLUS         = 0x002B;
michael@0: static const UChar MINUS        = 0x002D;
michael@0: static const UChar ISO8601_UTC  = 0x005A;   // 'Z'
michael@0: static const UChar ISO8601_SEP  = 0x003A;   // ':'
michael@0: 
michael@0: static const int32_t MILLIS_PER_HOUR = 60 * 60 * 1000;
michael@0: static const int32_t MILLIS_PER_MINUTE = 60 * 1000;
michael@0: static const int32_t MILLIS_PER_SECOND = 1000;
michael@0: 
michael@0: // Maximum offset (exclusive) in millisecond supported by offset formats
michael@0: static int32_t MAX_OFFSET = 24 * MILLIS_PER_HOUR;
michael@0: 
michael@0: // Maximum values for GMT offset fields
michael@0: static const int32_t MAX_OFFSET_HOUR = 23;
michael@0: static const int32_t MAX_OFFSET_MINUTE = 59;
michael@0: static const int32_t MAX_OFFSET_SECOND = 59;
michael@0: 
michael@0: static const int32_t UNKNOWN_OFFSET = 0x7FFFFFFF;
michael@0: 
michael@0: static const int32_t ALL_SIMPLE_NAME_TYPES = UTZNM_LONG_STANDARD | UTZNM_LONG_DAYLIGHT | UTZNM_SHORT_STANDARD | UTZNM_SHORT_DAYLIGHT | UTZNM_EXEMPLAR_LOCATION;
michael@0: static const int32_t ALL_GENERIC_NAME_TYPES = UTZGNM_LOCATION | UTZGNM_LONG | UTZGNM_SHORT;
michael@0: 
michael@0: #define DIGIT_VAL(c) (0x0030 <= (c) && (c) <= 0x0039 ? (c) - 0x0030 : -1)
michael@0: #define MAX_OFFSET_DIGITS 6
michael@0: 
michael@0: // Time Zone ID/Short ID trie
michael@0: static TextTrieMap *gZoneIdTrie = NULL;
michael@0: static icu::UInitOnce gZoneIdTrieInitOnce = U_INITONCE_INITIALIZER;
michael@0: 
michael@0: static TextTrieMap *gShortZoneIdTrie = NULL;
michael@0: static icu::UInitOnce gShortZoneIdTrieInitOnce = U_INITONCE_INITIALIZER;
michael@0: 
michael@0: static UMutex gLock = U_MUTEX_INITIALIZER;
michael@0: 
michael@0: U_CDECL_BEGIN
michael@0: /**
michael@0:  * Cleanup callback func
michael@0:  */
michael@0: static UBool U_CALLCONV tzfmt_cleanup(void)
michael@0: {
michael@0:     if (gZoneIdTrie != NULL) {
michael@0:         delete gZoneIdTrie;
michael@0:     }
michael@0:     gZoneIdTrie = NULL;
michael@0:     gZoneIdTrieInitOnce.reset();
michael@0: 
michael@0:     if (gShortZoneIdTrie != NULL) {
michael@0:         delete gShortZoneIdTrie;
michael@0:     }
michael@0:     gShortZoneIdTrie = NULL;
michael@0:     gShortZoneIdTrieInitOnce.reset();
michael@0: 
michael@0:     return TRUE;
michael@0: }
michael@0: U_CDECL_END
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // GMTOffsetField
michael@0: //
michael@0: // This class represents a localized GMT offset pattern
michael@0: // item and used by TimeZoneFormat
michael@0: // ------------------------------------------------------------------
michael@0: class GMTOffsetField : public UMemory {
michael@0: public:
michael@0:     enum FieldType {
michael@0:         TEXT = 0,
michael@0:         HOUR = 1,
michael@0:         MINUTE = 2,
michael@0:         SECOND = 4
michael@0:     };
michael@0: 
michael@0:     virtual ~GMTOffsetField();
michael@0: 
michael@0:     static GMTOffsetField* createText(const UnicodeString& text, UErrorCode& status);
michael@0:     static GMTOffsetField* createTimeField(FieldType type, uint8_t width, UErrorCode& status);
michael@0:     static UBool isValid(FieldType type, int32_t width);
michael@0:     static FieldType getTypeByLetter(UChar ch);
michael@0: 
michael@0:     FieldType getType() const;
michael@0:     uint8_t getWidth() const;
michael@0:     const UChar* getPatternText(void) const;
michael@0: 
michael@0: private:
michael@0:     UChar* fText;
michael@0:     FieldType fType;
michael@0:     uint8_t fWidth;
michael@0: 
michael@0:     GMTOffsetField();
michael@0: };
michael@0: 
michael@0: GMTOffsetField::GMTOffsetField()
michael@0: : fText(NULL), fType(TEXT), fWidth(0) {
michael@0: }
michael@0: 
michael@0: GMTOffsetField::~GMTOffsetField() {
michael@0:     if (fText) {
michael@0:         uprv_free(fText);
michael@0:     }
michael@0: }
michael@0: 
michael@0: GMTOffsetField*
michael@0: GMTOffsetField::createText(const UnicodeString& text, UErrorCode& status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return NULL;
michael@0:     }
michael@0:     GMTOffsetField* result = new GMTOffsetField();
michael@0:     if (result == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     int32_t len = text.length();
michael@0:     result->fText = (UChar*)uprv_malloc((len + 1) * sizeof(UChar));
michael@0:     if (result->fText == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         delete result;
michael@0:         return NULL;
michael@0:     }
michael@0:     u_strncpy(result->fText, text.getBuffer(), len);
michael@0:     result->fText[len] = 0;
michael@0:     result->fType = TEXT;
michael@0: 
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: GMTOffsetField*
michael@0: GMTOffsetField::createTimeField(FieldType type, uint8_t width, UErrorCode& status) {
michael@0:     U_ASSERT(type != TEXT);
michael@0:     if (U_FAILURE(status)) {
michael@0:         return NULL;
michael@0:     }
michael@0:     GMTOffsetField* result = new GMTOffsetField();
michael@0:     if (result == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     result->fType = type;
michael@0:     result->fWidth = width;
michael@0: 
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: UBool
michael@0: GMTOffsetField::isValid(FieldType type, int32_t width) {
michael@0:     switch (type) {
michael@0:     case HOUR:
michael@0:         return (width == 1 || width == 2);
michael@0:     case MINUTE:
michael@0:     case SECOND:
michael@0:         return (width == 2);
michael@0:     default:
michael@0:         U_ASSERT(FALSE);
michael@0:     }
michael@0:     return (width > 0);
michael@0: }
michael@0: 
michael@0: GMTOffsetField::FieldType
michael@0: GMTOffsetField::getTypeByLetter(UChar ch) {
michael@0:     if (ch == 0x0048 /* H */) {
michael@0:         return HOUR;
michael@0:     } else if (ch == 0x006D /* m */) {
michael@0:         return MINUTE;
michael@0:     } else if (ch == 0x0073 /* s */) {
michael@0:         return SECOND;
michael@0:     }
michael@0:     return TEXT;
michael@0: }
michael@0: 
michael@0: inline GMTOffsetField::FieldType
michael@0: GMTOffsetField::getType() const {
michael@0:      return fType;
michael@0:  }
michael@0: 
michael@0: inline uint8_t
michael@0: GMTOffsetField::getWidth() const {
michael@0:     return fWidth;
michael@0: }
michael@0:  
michael@0: inline const UChar*
michael@0: GMTOffsetField::getPatternText(void) const {
michael@0:     return fText;
michael@0: }
michael@0: 
michael@0: 
michael@0: U_CDECL_BEGIN
michael@0: static void U_CALLCONV
michael@0: deleteGMTOffsetField(void *obj) {
michael@0:     delete static_cast<GMTOffsetField *>(obj);
michael@0: }
michael@0: U_CDECL_END
michael@0: 
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // TimeZoneFormat
michael@0: // ------------------------------------------------------------------
michael@0: UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TimeZoneFormat)
michael@0: 
michael@0: TimeZoneFormat::TimeZoneFormat(const Locale& locale, UErrorCode& status) 
michael@0: : fLocale(locale), fTimeZoneNames(NULL), fTimeZoneGenericNames(NULL), fDefParseOptionFlags(0) {
michael@0: 
michael@0:     for (int32_t i = 0; i < UTZFMT_PAT_COUNT; i++) {
michael@0:         fGMTOffsetPatternItems[i] = NULL;
michael@0:     }
michael@0: 
michael@0:     const char* region = fLocale.getCountry();
michael@0:     int32_t regionLen = uprv_strlen(region);
michael@0:     if (regionLen == 0) {
michael@0:         char loc[ULOC_FULLNAME_CAPACITY];
michael@0:         uloc_addLikelySubtags(fLocale.getName(), loc, sizeof(loc), &status);
michael@0: 
michael@0:         regionLen = uloc_getCountry(loc, fTargetRegion, sizeof(fTargetRegion), &status);
michael@0:         if (U_SUCCESS(status)) {
michael@0:             fTargetRegion[regionLen] = 0;
michael@0:         } else {
michael@0:             return;
michael@0:         }
michael@0:     } else if (regionLen < (int32_t)sizeof(fTargetRegion)) {
michael@0:         uprv_strcpy(fTargetRegion, region);
michael@0:     } else {
michael@0:         fTargetRegion[0] = 0;
michael@0:     }
michael@0: 
michael@0:     fTimeZoneNames = TimeZoneNames::createInstance(locale, status);
michael@0:     // fTimeZoneGenericNames is lazily instantiated
michael@0:     if (U_FAILURE(status)) {
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     const UChar* gmtPattern = NULL;
michael@0:     const UChar* hourFormats = NULL;
michael@0: 
michael@0:     UResourceBundle *zoneBundle = ures_open(U_ICUDATA_ZONE, locale.getName(), &status);
michael@0:     UResourceBundle *zoneStringsArray = ures_getByKeyWithFallback(zoneBundle, gZoneStringsTag, NULL, &status);
michael@0:     if (U_SUCCESS(status)) {
michael@0:         const UChar* resStr;
michael@0:         int32_t len;
michael@0:         resStr = ures_getStringByKeyWithFallback(zoneStringsArray, gGmtFormatTag, &len, &status);
michael@0:         if (len > 0) {
michael@0:             gmtPattern = resStr;
michael@0:         }
michael@0:         resStr = ures_getStringByKeyWithFallback(zoneStringsArray, gGmtZeroFormatTag, &len, &status);
michael@0:         if (len > 0) {
michael@0:             fGMTZeroFormat.setTo(TRUE, resStr, len);
michael@0:         }
michael@0:         resStr = ures_getStringByKeyWithFallback(zoneStringsArray, gHourFormatTag, &len, &status);
michael@0:         if (len > 0) {
michael@0:             hourFormats = resStr;
michael@0:         }
michael@0:         ures_close(zoneStringsArray);
michael@0:         ures_close(zoneBundle);
michael@0:     }
michael@0: 
michael@0:     if (gmtPattern == NULL) {
michael@0:         gmtPattern = DEFAULT_GMT_PATTERN;
michael@0:     }
michael@0:     initGMTPattern(UnicodeString(gmtPattern, -1), status);
michael@0: 
michael@0:     UBool useDefaultOffsetPatterns = TRUE;
michael@0:     if (hourFormats) {
michael@0:         UChar *sep = u_strchr(hourFormats, (UChar)0x003B /* ';' */);
michael@0:         if (sep != NULL) {
michael@0:             UErrorCode tmpStatus = U_ZERO_ERROR;
michael@0:             fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HM].setTo(FALSE, hourFormats, (int32_t)(sep - hourFormats));
michael@0:             fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HM].setTo(TRUE, sep + 1, -1);
michael@0:             expandOffsetPattern(fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HM], fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HMS], tmpStatus);
michael@0:             expandOffsetPattern(fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HM], fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HMS], tmpStatus);
michael@0:             truncateOffsetPattern(fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HM], fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_H], tmpStatus);
michael@0:             truncateOffsetPattern(fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HM], fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_H], tmpStatus);
michael@0:             if (U_SUCCESS(tmpStatus)) {
michael@0:                 useDefaultOffsetPatterns = FALSE;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     if (useDefaultOffsetPatterns) {
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_H].setTo(TRUE, DEFAULT_GMT_POSITIVE_H, -1);
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HM].setTo(TRUE, DEFAULT_GMT_POSITIVE_HM, -1);
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_POSITIVE_HMS].setTo(TRUE, DEFAULT_GMT_POSITIVE_HMS, -1);
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_H].setTo(TRUE, DEFAULT_GMT_NEGATIVE_H, -1);
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HM].setTo(TRUE, DEFAULT_GMT_NEGATIVE_HM, -1);
michael@0:         fGMTOffsetPatterns[UTZFMT_PAT_NEGATIVE_HMS].setTo(TRUE, DEFAULT_GMT_NEGATIVE_HMS, -1);
michael@0:     }
michael@0:     initGMTOffsetPatterns(status);
michael@0: 
michael@0:     NumberingSystem* ns = NumberingSystem::createInstance(locale, status);
michael@0:     UBool useDefDigits = TRUE;
michael@0:     if (ns && !ns->isAlgorithmic()) {
michael@0:         UnicodeString digits = ns->getDescription();
michael@0:         useDefDigits = !toCodePoints(digits, fGMTOffsetDigits, 10);
michael@0:     }
michael@0:     if (useDefDigits) {
michael@0:         uprv_memcpy(fGMTOffsetDigits, DEFAULT_GMT_DIGITS, sizeof(UChar32) * 10);
michael@0:     }
michael@0:     delete ns;
michael@0: }
michael@0: 
michael@0: TimeZoneFormat::TimeZoneFormat(const TimeZoneFormat& other)
michael@0: : Format(other), fTimeZoneNames(NULL), fTimeZoneGenericNames(NULL) {
michael@0: 
michael@0:     for (int32_t i = 0; i < UTZFMT_PAT_COUNT; i++) {
michael@0:         fGMTOffsetPatternItems[i] = NULL;
michael@0:     }
michael@0:     *this = other;
michael@0: }
michael@0: 
michael@0: 
michael@0: TimeZoneFormat::~TimeZoneFormat() {
michael@0:     delete fTimeZoneNames;
michael@0:     delete fTimeZoneGenericNames;
michael@0:     for (int32_t i = 0; i < UTZFMT_PAT_COUNT; i++) {
michael@0:         delete fGMTOffsetPatternItems[i];
michael@0:     }
michael@0: }
michael@0: 
michael@0: TimeZoneFormat&
michael@0: TimeZoneFormat::operator=(const TimeZoneFormat& other) {
michael@0:     if (this == &other) {
michael@0:         return *this;
michael@0:     }
michael@0: 
michael@0:     delete fTimeZoneNames;
michael@0:     delete fTimeZoneGenericNames;
michael@0:     fTimeZoneGenericNames = NULL;
michael@0: 
michael@0:     fLocale = other.fLocale;
michael@0:     uprv_memcpy(fTargetRegion, other.fTargetRegion, sizeof(fTargetRegion));
michael@0: 
michael@0:     fTimeZoneNames = other.fTimeZoneNames->clone();
michael@0:     if (other.fTimeZoneGenericNames) {
michael@0:         // TODO: this test has dubious thread safety.
michael@0:         fTimeZoneGenericNames = other.fTimeZoneGenericNames->clone();
michael@0:     }
michael@0: 
michael@0:     fGMTPattern = other.fGMTPattern;
michael@0:     fGMTPatternPrefix = other.fGMTPatternPrefix;
michael@0:     fGMTPatternSuffix = other.fGMTPatternSuffix;
michael@0: 
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     for (int32_t i = 0; i < UTZFMT_PAT_COUNT; i++) {
michael@0:         fGMTOffsetPatterns[i] = other.fGMTOffsetPatterns[i];
michael@0:         delete fGMTOffsetPatternItems[i];
michael@0:     }
michael@0:     initGMTOffsetPatterns(status);
michael@0:     U_ASSERT(U_SUCCESS(status));
michael@0: 
michael@0:     fGMTZeroFormat = other.fGMTZeroFormat;
michael@0: 
michael@0:     uprv_memcpy(fGMTOffsetDigits, other.fGMTOffsetDigits, sizeof(fGMTOffsetDigits));
michael@0: 
michael@0:     fDefParseOptionFlags = other.fDefParseOptionFlags;
michael@0: 
michael@0:     return *this;
michael@0: }
michael@0: 
michael@0: 
michael@0: UBool
michael@0: TimeZoneFormat::operator==(const Format& other) const {
michael@0:     TimeZoneFormat* tzfmt = (TimeZoneFormat*)&other;
michael@0: 
michael@0:     UBool isEqual =
michael@0:             fLocale == tzfmt->fLocale
michael@0:             && fGMTPattern == tzfmt->fGMTPattern
michael@0:             && fGMTZeroFormat == tzfmt->fGMTZeroFormat
michael@0:             && *fTimeZoneNames == *tzfmt->fTimeZoneNames;
michael@0: 
michael@0:     for (int32_t i = 0; i < UTZFMT_PAT_COUNT && isEqual; i++) {
michael@0:         isEqual = fGMTOffsetPatterns[i] == tzfmt->fGMTOffsetPatterns[i];
michael@0:     }
michael@0:     for (int32_t i = 0; i < 10 && isEqual; i++) {
michael@0:         isEqual = fGMTOffsetDigits[i] == tzfmt->fGMTOffsetDigits[i];
michael@0:     }
michael@0:     // TODO
michael@0:     // Check fTimeZoneGenericNames. For now,
michael@0:     // if fTimeZoneNames is same, fTimeZoneGenericNames should
michael@0:     // be also equivalent.
michael@0:     return isEqual;
michael@0: }
michael@0: 
michael@0: Format*
michael@0: TimeZoneFormat::clone() const {
michael@0:     return new TimeZoneFormat(*this);
michael@0: }
michael@0: 
michael@0: TimeZoneFormat* U_EXPORT2
michael@0: TimeZoneFormat::createInstance(const Locale& locale, UErrorCode& status) {
michael@0:     TimeZoneFormat* tzfmt = new TimeZoneFormat(locale, status);
michael@0:     if (U_SUCCESS(status)) {
michael@0:         return tzfmt;
michael@0:     }
michael@0:     delete tzfmt;
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Setter and Getter
michael@0: 
michael@0: const TimeZoneNames*
michael@0: TimeZoneFormat::getTimeZoneNames() const {
michael@0:     return (const TimeZoneNames*)fTimeZoneNames;
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::adoptTimeZoneNames(TimeZoneNames *tznames) {
michael@0:     delete fTimeZoneNames;
michael@0:     fTimeZoneNames = tznames;
michael@0: 
michael@0:     // TODO - We should also update fTimeZoneGenericNames
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setTimeZoneNames(const TimeZoneNames &tznames) {
michael@0:     delete fTimeZoneNames;
michael@0:     fTimeZoneNames = tznames.clone();
michael@0: 
michael@0:     // TODO - We should also update fTimeZoneGenericNames
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setDefaultParseOptions(uint32_t flags) {
michael@0:     fDefParseOptionFlags = flags;
michael@0: }
michael@0: 
michael@0: uint32_t
michael@0: TimeZoneFormat::getDefaultParseOptions(void) const {
michael@0:     return fDefParseOptionFlags;
michael@0: }
michael@0: 
michael@0: 
michael@0: UnicodeString& 
michael@0: TimeZoneFormat::getGMTPattern(UnicodeString& pattern) const {
michael@0:     return pattern.setTo(fGMTPattern);
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setGMTPattern(const UnicodeString& pattern, UErrorCode& status) {
michael@0:     initGMTPattern(pattern, status);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::getGMTOffsetPattern(UTimeZoneFormatGMTOffsetPatternType type, UnicodeString& pattern) const {
michael@0:     return pattern.setTo(fGMTOffsetPatterns[type]);
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setGMTOffsetPattern(UTimeZoneFormatGMTOffsetPatternType type, const UnicodeString& pattern, UErrorCode& status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return;
michael@0:     }
michael@0:     if (pattern == fGMTOffsetPatterns[type]) {
michael@0:         // No need to reset
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     OffsetFields required = FIELDS_HM;
michael@0:     switch (type) {
michael@0:     case UTZFMT_PAT_POSITIVE_H:
michael@0:     case UTZFMT_PAT_NEGATIVE_H:
michael@0:         required = FIELDS_H;
michael@0:         break;
michael@0:     case UTZFMT_PAT_POSITIVE_HM:
michael@0:     case UTZFMT_PAT_NEGATIVE_HM:
michael@0:         required = FIELDS_HM;
michael@0:         break;
michael@0:     case UTZFMT_PAT_POSITIVE_HMS:
michael@0:     case UTZFMT_PAT_NEGATIVE_HMS:
michael@0:         required = FIELDS_HMS;
michael@0:         break;
michael@0:     default:
michael@0:         U_ASSERT(FALSE);
michael@0:         break;
michael@0:     }
michael@0: 
michael@0:     UVector* patternItems = parseOffsetPattern(pattern, required, status);
michael@0:     if (patternItems == NULL) {
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     fGMTOffsetPatterns[type].setTo(pattern);
michael@0:     delete fGMTOffsetPatternItems[type];
michael@0:     fGMTOffsetPatternItems[type] = patternItems;
michael@0:     checkAbuttingHoursAndMinutes();
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::getGMTOffsetDigits(UnicodeString& digits) const {
michael@0:     digits.remove();
michael@0:     for (int32_t i = 0; i < 10; i++) {
michael@0:         digits.append(fGMTOffsetDigits[i]);
michael@0:     }
michael@0:     return digits;
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setGMTOffsetDigits(const UnicodeString& digits, UErrorCode& status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return;
michael@0:     }
michael@0:     UChar32 digitArray[10];
michael@0:     if (!toCodePoints(digits, digitArray, 10)) {
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return;
michael@0:     }
michael@0:     uprv_memcpy(fGMTOffsetDigits, digitArray, sizeof(UChar32)*10);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::getGMTZeroFormat(UnicodeString& gmtZeroFormat) const {
michael@0:     return gmtZeroFormat.setTo(fGMTZeroFormat);
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::setGMTZeroFormat(const UnicodeString& gmtZeroFormat, UErrorCode& status) {
michael@0:     if (U_SUCCESS(status)) {
michael@0:         if (gmtZeroFormat.isEmpty()) {
michael@0:             status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         } else if (gmtZeroFormat != fGMTZeroFormat) {
michael@0:             fGMTZeroFormat.setTo(gmtZeroFormat);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Format and Parse
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::format(UTimeZoneFormatStyle style, const TimeZone& tz, UDate date,
michael@0:         UnicodeString& name, UTimeZoneFormatTimeType* timeType /* = NULL */) const {
michael@0:     if (timeType) {
michael@0:         *timeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:     }
michael@0: 
michael@0:     UBool noOffsetFormatFallback = FALSE;
michael@0: 
michael@0:     switch (style) {
michael@0:     case UTZFMT_STYLE_GENERIC_LOCATION:
michael@0:         formatGeneric(tz, UTZGNM_LOCATION, date, name);
michael@0:         break;
michael@0:     case UTZFMT_STYLE_GENERIC_LONG:
michael@0:         formatGeneric(tz, UTZGNM_LONG, date, name);
michael@0:         break;
michael@0:     case UTZFMT_STYLE_GENERIC_SHORT:
michael@0:         formatGeneric(tz, UTZGNM_SHORT, date, name);
michael@0:         break;
michael@0:     case UTZFMT_STYLE_SPECIFIC_LONG:
michael@0:         formatSpecific(tz, UTZNM_LONG_STANDARD, UTZNM_LONG_DAYLIGHT, date, name, timeType);
michael@0:         break;
michael@0:     case UTZFMT_STYLE_SPECIFIC_SHORT:
michael@0:         formatSpecific(tz, UTZNM_SHORT_STANDARD, UTZNM_SHORT_DAYLIGHT, date, name, timeType);
michael@0:         break;
michael@0: 
michael@0:     case UTZFMT_STYLE_ZONE_ID:
michael@0:         tz.getID(name);
michael@0:         noOffsetFormatFallback = TRUE;
michael@0:         break;
michael@0:     case UTZFMT_STYLE_ZONE_ID_SHORT:
michael@0:         {
michael@0:             const UChar* shortID = ZoneMeta::getShortID(tz);
michael@0:             if (shortID == NULL) {
michael@0:                 shortID = UNKNOWN_SHORT_ZONE_ID;
michael@0:             }
michael@0:             name.setTo(shortID, -1);
michael@0:         }
michael@0:         noOffsetFormatFallback = TRUE;
michael@0:         break;
michael@0: 
michael@0:     case UTZFMT_STYLE_EXEMPLAR_LOCATION:
michael@0:         formatExemplarLocation(tz, name);
michael@0:         noOffsetFormatFallback = TRUE;
michael@0:         break;
michael@0: 
michael@0:     default:
michael@0:         // will be handled below
michael@0:         break;
michael@0:     }
michael@0: 
michael@0:     if (name.isEmpty() && !noOffsetFormatFallback) {
michael@0:         UErrorCode status = U_ZERO_ERROR;
michael@0:         int32_t rawOffset, dstOffset;
michael@0:         tz.getOffset(date, FALSE, rawOffset, dstOffset, status);
michael@0:         int32_t offset = rawOffset + dstOffset;
michael@0:         if (U_SUCCESS(status)) {
michael@0:             switch (style) {
michael@0:             case UTZFMT_STYLE_GENERIC_LOCATION:
michael@0:             case UTZFMT_STYLE_GENERIC_LONG:
michael@0:             case UTZFMT_STYLE_SPECIFIC_LONG:
michael@0:             case UTZFMT_STYLE_LOCALIZED_GMT:
michael@0:                 formatOffsetLocalizedGMT(offset, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_GENERIC_SHORT:
michael@0:             case UTZFMT_STYLE_SPECIFIC_SHORT:
michael@0:             case UTZFMT_STYLE_LOCALIZED_GMT_SHORT:
michael@0:                 formatOffsetShortLocalizedGMT(offset, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_SHORT:
michael@0:                 formatOffsetISO8601Basic(offset, TRUE, TRUE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT:
michael@0:                 formatOffsetISO8601Basic(offset, FALSE, TRUE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_FIXED:
michael@0:                 formatOffsetISO8601Basic(offset, TRUE, FALSE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED:
michael@0:                 formatOffsetISO8601Basic(offset, FALSE, FALSE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_EXTENDED_FIXED:
michael@0:                 formatOffsetISO8601Extended(offset, TRUE, FALSE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED:
michael@0:                 formatOffsetISO8601Extended(offset, FALSE, FALSE, TRUE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_FULL:
michael@0:                 formatOffsetISO8601Basic(offset, TRUE, FALSE, FALSE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL:
michael@0:                 formatOffsetISO8601Basic(offset, FALSE, FALSE, FALSE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_EXTENDED_FULL:
michael@0:                 formatOffsetISO8601Extended(offset, TRUE, FALSE, FALSE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL:
michael@0:                 formatOffsetISO8601Extended(offset, FALSE, FALSE, FALSE, name, status);
michael@0:                 break;
michael@0: 
michael@0:             default:
michael@0:               // UTZFMT_STYLE_ZONE_ID, UTZFMT_STYLE_ZONE_ID_SHORT, UTZFMT_STYLE_EXEMPLAR_LOCATION
michael@0:               break;
michael@0:             }
michael@0: 
michael@0:             if (timeType) {
michael@0:                 *timeType = (dstOffset != 0) ? UTZFMT_TIME_TYPE_DAYLIGHT : UTZFMT_TIME_TYPE_STANDARD;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return name;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::format(const Formattable& obj, UnicodeString& appendTo,
michael@0:         FieldPosition& pos, UErrorCode& status) const {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return appendTo;
michael@0:     }
michael@0:     UDate date = Calendar::getNow();
michael@0:     if (obj.getType() == Formattable::kObject) {
michael@0:         const UObject* formatObj = obj.getObject();
michael@0:         const TimeZone* tz = dynamic_cast<const TimeZone*>(formatObj);
michael@0:         if (tz == NULL) {
michael@0:             const Calendar* cal = dynamic_cast<const Calendar*>(formatObj);
michael@0:             if (cal != NULL) {
michael@0:                 tz = &cal->getTimeZone();
michael@0:                 date = cal->getTime(status);
michael@0:             }
michael@0:         }
michael@0:         if (tz != NULL) {
michael@0:             int32_t rawOffset, dstOffset;
michael@0:             tz->getOffset(date, FALSE, rawOffset, dstOffset, status);
michael@0:             UnicodeString result;
michael@0:             formatOffsetLocalizedGMT(rawOffset + dstOffset, result, status);
michael@0:             if (U_SUCCESS(status)) {
michael@0:                 appendTo.append(result);
michael@0:                 if (pos.getField() == UDAT_TIMEZONE_FIELD) {
michael@0:                     pos.setBeginIndex(0);
michael@0:                     pos.setEndIndex(result.length());
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     return appendTo;
michael@0: }
michael@0: 
michael@0: TimeZone*
michael@0: TimeZoneFormat::parse(UTimeZoneFormatStyle style, const UnicodeString& text, ParsePosition& pos,
michael@0:         UTimeZoneFormatTimeType* timeType /*= NULL*/) const {
michael@0:     return parse(style, text, pos, getDefaultParseOptions(), timeType);
michael@0: }
michael@0: 
michael@0: TimeZone*
michael@0: TimeZoneFormat::parse(UTimeZoneFormatStyle style, const UnicodeString& text, ParsePosition& pos,
michael@0:         int32_t parseOptions, UTimeZoneFormatTimeType* timeType /* = NULL */) const {
michael@0:     if (timeType) {
michael@0:         *timeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:     }
michael@0: 
michael@0:     int32_t startIdx = pos.getIndex();
michael@0:     int32_t maxPos = text.length();
michael@0:     int32_t offset;
michael@0: 
michael@0:     // Styles using localized GMT format as fallback
michael@0:     UBool fallbackLocalizedGMT = 
michael@0:         (style == UTZFMT_STYLE_SPECIFIC_LONG || style == UTZFMT_STYLE_GENERIC_LONG || style == UTZFMT_STYLE_GENERIC_LOCATION);
michael@0:     UBool fallbackShortLocalizedGMT =
michael@0:         (style == UTZFMT_STYLE_SPECIFIC_SHORT || style == UTZFMT_STYLE_GENERIC_SHORT);
michael@0: 
michael@0:     int32_t evaluated = 0;  // bit flags representing already evaluated styles
michael@0:     ParsePosition tmpPos(startIdx);
michael@0: 
michael@0:     int32_t parsedOffset = UNKNOWN_OFFSET;  // stores successfully parsed offset for later use
michael@0:     int32_t parsedPos = -1;                 // stores successfully parsed offset position for later use
michael@0: 
michael@0:     // Try localized GMT format first if necessary
michael@0:     if (fallbackLocalizedGMT || fallbackShortLocalizedGMT) {
michael@0:         UBool hasDigitOffset = FALSE;
michael@0:         offset = parseOffsetLocalizedGMT(text, tmpPos, fallbackShortLocalizedGMT, &hasDigitOffset);
michael@0:         if (tmpPos.getErrorIndex() == -1) {
michael@0:             // Even when the input text was successfully parsed as a localized GMT format text,
michael@0:             // we may still need to evaluate the specified style if -
michael@0:             //   1) GMT zero format was used, and
michael@0:             //   2) The input text was not completely processed
michael@0:             if (tmpPos.getIndex() == maxPos || hasDigitOffset) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0:             parsedOffset = offset;
michael@0:             parsedPos = tmpPos.getIndex();
michael@0:         }
michael@0:         // Note: For now, no distinction between long/short localized GMT format in the parser.
michael@0:         // This might be changed in future.
michael@0:         // evaluated |= (fallbackLocalizedGMT ? STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT] : STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT_SHORT]);
michael@0:         evaluated |= STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT] | STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT_SHORT];
michael@0:     }
michael@0: 
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     UnicodeString tzID;
michael@0: 
michael@0:     // Try the specified style
michael@0:     switch (style) {
michael@0:     case UTZFMT_STYLE_LOCALIZED_GMT:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             offset = parseOffsetLocalizedGMT(text, tmpPos);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0: 
michael@0:             // Note: For now, no distinction between long/short localized GMT format in the parser.
michael@0:             // This might be changed in future.
michael@0:             evaluated |= STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT_SHORT];
michael@0: 
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_LOCALIZED_GMT_SHORT:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             offset = parseOffsetShortLocalizedGMT(text, tmpPos);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0: 
michael@0:             // Note: For now, no distinction between long/short localized GMT format in the parser.
michael@0:             // This might be changed in future.
michael@0:             evaluated |= STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT];
michael@0: 
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_ISO_BASIC_SHORT:
michael@0:     case UTZFMT_STYLE_ISO_BASIC_FIXED:
michael@0:     case UTZFMT_STYLE_ISO_BASIC_FULL:
michael@0:     case UTZFMT_STYLE_ISO_EXTENDED_FIXED:
michael@0:     case UTZFMT_STYLE_ISO_EXTENDED_FULL:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             offset = parseOffsetISO8601(text, tmpPos);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0: 
michael@0:             break;
michael@0:         }
michael@0: 
michael@0:     case UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT:
michael@0:     case UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED:
michael@0:     case UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL:
michael@0:     case UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED:
michael@0:     case UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             // Exclude the case of UTC Indicator "Z" here
michael@0:             UBool hasDigitOffset = FALSE;
michael@0:             offset = parseOffsetISO8601(text, tmpPos, FALSE, &hasDigitOffset);
michael@0:             if (tmpPos.getErrorIndex() == -1 && hasDigitOffset) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0: 
michael@0:             break;
michael@0:         }
michael@0: 
michael@0:     case UTZFMT_STYLE_SPECIFIC_LONG:
michael@0:     case UTZFMT_STYLE_SPECIFIC_SHORT:
michael@0:         {
michael@0:             // Specific styles
michael@0:             int32_t nameTypes = 0;
michael@0:             if (style == UTZFMT_STYLE_SPECIFIC_LONG) {
michael@0:                 nameTypes = (UTZNM_LONG_STANDARD | UTZNM_LONG_DAYLIGHT);
michael@0:             } else {
michael@0:                 U_ASSERT(style == UTZFMT_STYLE_SPECIFIC_SHORT);
michael@0:                 nameTypes = (UTZNM_SHORT_STANDARD | UTZNM_SHORT_DAYLIGHT);
michael@0:             }
michael@0:             LocalPointer<TimeZoneNames::MatchInfoCollection> specificMatches(fTimeZoneNames->find(text, startIdx, nameTypes, status));
michael@0:             if (U_FAILURE(status)) {
michael@0:                 pos.setErrorIndex(startIdx);
michael@0:                 return NULL;
michael@0:             }
michael@0:             if (!specificMatches.isNull()) {
michael@0:                 int32_t matchIdx = -1;
michael@0:                 int32_t matchPos = -1;
michael@0:                 for (int32_t i = 0; i < specificMatches->size(); i++) {
michael@0:                     matchPos  = startIdx + specificMatches->getMatchLengthAt(i);
michael@0:                     if (matchPos > parsedPos) {
michael@0:                         matchIdx = i;
michael@0:                         parsedPos = matchPos;
michael@0:                     }
michael@0:                 }
michael@0:                 if (matchIdx >= 0) {
michael@0:                     if (timeType) {
michael@0:                         *timeType = getTimeType(specificMatches->getNameTypeAt(matchIdx));
michael@0:                     }
michael@0:                     pos.setIndex(matchPos);
michael@0:                     getTimeZoneID(specificMatches.getAlias(), matchIdx, tzID);
michael@0:                     U_ASSERT(!tzID.isEmpty());
michael@0:                     return TimeZone::createTimeZone(tzID);
michael@0:                 }
michael@0:             }
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_GENERIC_LONG:
michael@0:     case UTZFMT_STYLE_GENERIC_SHORT:
michael@0:     case UTZFMT_STYLE_GENERIC_LOCATION:
michael@0:         {
michael@0:             int32_t genericNameTypes = 0;
michael@0:             switch (style) {
michael@0:             case UTZFMT_STYLE_GENERIC_LOCATION:
michael@0:                 genericNameTypes = UTZGNM_LOCATION;
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_GENERIC_LONG:
michael@0:                 genericNameTypes = UTZGNM_LONG | UTZGNM_LOCATION;
michael@0:                 break;
michael@0: 
michael@0:             case UTZFMT_STYLE_GENERIC_SHORT:
michael@0:                 genericNameTypes = UTZGNM_SHORT | UTZGNM_LOCATION;
michael@0:                 break;
michael@0: 
michael@0:             default:
michael@0:                 U_ASSERT(FALSE);
michael@0:             }
michael@0: 
michael@0:             int32_t len = 0;
michael@0:             UTimeZoneFormatTimeType tt = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:             const TimeZoneGenericNames *gnames = getTimeZoneGenericNames(status);
michael@0:             if (U_SUCCESS(status)) {
michael@0:                 len = gnames->findBestMatch(text, startIdx, genericNameTypes, tzID, tt, status);
michael@0:             }
michael@0:             if (U_FAILURE(status)) {
michael@0:                 pos.setErrorIndex(startIdx);
michael@0:                 return NULL;
michael@0:             }
michael@0:             if (len > 0) {
michael@0:                 // Found a match
michael@0:                 if (timeType) {
michael@0:                     *timeType = tt;
michael@0:                 }
michael@0:                 pos.setIndex(startIdx + len);
michael@0:                 U_ASSERT(!tzID.isEmpty());
michael@0:                 return TimeZone::createTimeZone(tzID);
michael@0:             }
michael@0: 
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_ZONE_ID:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             parseZoneID(text, tmpPos, tzID);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return TimeZone::createTimeZone(tzID);
michael@0:             }
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_ZONE_ID_SHORT:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             parseShortZoneID(text, tmpPos, tzID);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return TimeZone::createTimeZone(tzID);
michael@0:             }
michael@0:             break;
michael@0:         }
michael@0:     case UTZFMT_STYLE_EXEMPLAR_LOCATION:
michael@0:         {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             parseExemplarLocation(text, tmpPos, tzID);
michael@0:             if (tmpPos.getErrorIndex() == -1) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return TimeZone::createTimeZone(tzID);
michael@0:             }
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0:     evaluated |= STYLE_PARSE_FLAGS[style];
michael@0: 
michael@0: 
michael@0:     if (parsedPos > startIdx) {
michael@0:         // When the specified style is one of SPECIFIC_XXX or GENERIC_XXX, we tried to parse the input
michael@0:         // as localized GMT format earlier. If parsedOffset is positive, it means it was successfully
michael@0:         // parsed as localized GMT format, but offset digits were not detected (more specifically, GMT
michael@0:         // zero format). Then, it tried to find a match within the set of display names, but could not
michael@0:         // find a match. At this point, we can safely assume the input text contains the localized
michael@0:         // GMT format.
michael@0:         U_ASSERT(parsedOffset != UNKNOWN_OFFSET);
michael@0:         pos.setIndex(parsedPos);
michael@0:         return createTimeZoneForOffset(parsedOffset);
michael@0:     }
michael@0: 
michael@0:     // Failed to parse the input text as the time zone format in the specified style.
michael@0:     // Check the longest match among other styles below.
michael@0:     UnicodeString parsedID;
michael@0:     UTimeZoneFormatTimeType parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0: 
michael@0:     U_ASSERT(parsedPos < 0);
michael@0:     U_ASSERT(parsedOffset == UNKNOWN_OFFSET);
michael@0: 
michael@0:     // ISO 8601
michael@0:     if (parsedPos < maxPos &&
michael@0:         ((evaluated & ISO_Z_STYLE_FLAG) == 0 || (evaluated & ISO_LOCAL_STYLE_FLAG) == 0)) {
michael@0:         tmpPos.setIndex(startIdx);
michael@0:         tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:         UBool hasDigitOffset = FALSE;
michael@0:         offset = parseOffsetISO8601(text, tmpPos, FALSE, &hasDigitOffset);
michael@0:         if (tmpPos.getErrorIndex() == -1) {
michael@0:             if (tmpPos.getIndex() == maxPos || hasDigitOffset) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0:             // Note: When ISO 8601 format contains offset digits, it should not
michael@0:             // collide with other formats. However, ISO 8601 UTC format "Z" (single letter)
michael@0:             // may collide with other names. In this case, we need to evaluate other names.
michael@0:             if (parsedPos < tmpPos.getIndex()) {
michael@0:                 parsedOffset = offset;
michael@0:                 parsedID.setToBogus();
michael@0:                 parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:                 parsedPos = tmpPos.getIndex();
michael@0:                 U_ASSERT(parsedPos == startIdx + 1);    // only when "Z" is used
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Localized GMT format
michael@0:     if (parsedPos < maxPos &&
michael@0:         (evaluated & STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT]) == 0) {
michael@0:         tmpPos.setIndex(startIdx);
michael@0:         tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:         UBool hasDigitOffset = FALSE;
michael@0:         offset = parseOffsetLocalizedGMT(text, tmpPos, FALSE, &hasDigitOffset);
michael@0:         if (tmpPos.getErrorIndex() == -1) {
michael@0:             if (tmpPos.getIndex() == maxPos || hasDigitOffset) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0:             // Evaluate other names - see the comment earlier in this method.
michael@0:             if (parsedPos < tmpPos.getIndex()) {
michael@0:                 parsedOffset = offset;
michael@0:                 parsedID.setToBogus();
michael@0:                 parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:                 parsedPos = tmpPos.getIndex();
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (parsedPos < maxPos &&
michael@0:         (evaluated & STYLE_PARSE_FLAGS[UTZFMT_STYLE_LOCALIZED_GMT_SHORT]) == 0) {
michael@0:         tmpPos.setIndex(startIdx);
michael@0:         tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:         UBool hasDigitOffset = FALSE;
michael@0:         offset = parseOffsetLocalizedGMT(text, tmpPos, TRUE, &hasDigitOffset);
michael@0:         if (tmpPos.getErrorIndex() == -1) {
michael@0:             if (tmpPos.getIndex() == maxPos || hasDigitOffset) {
michael@0:                 pos.setIndex(tmpPos.getIndex());
michael@0:                 return createTimeZoneForOffset(offset);
michael@0:             }
michael@0:             // Evaluate other names - see the comment earlier in this method.
michael@0:             if (parsedPos < tmpPos.getIndex()) {
michael@0:                 parsedOffset = offset;
michael@0:                 parsedID.setToBogus();
michael@0:                 parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:                 parsedPos = tmpPos.getIndex();
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // When ParseOption.ALL_STYLES is available, we also try to look all possible display names and IDs.
michael@0:     // For example, when style is GENERIC_LONG, "EST" (SPECIFIC_SHORT) is never
michael@0:     // used for America/New_York. With parseAllStyles true, this code parses "EST"
michael@0:     // as America/New_York.
michael@0: 
michael@0:     // Note: Adding all possible names into the trie used by the implementation is quite heavy operation,
michael@0:     // which we want to avoid normally (note that we cache the trie, so this is applicable to the
michael@0:     // first time only as long as the cache does not expire).
michael@0: 
michael@0:     if (parseOptions & UTZFMT_PARSE_OPTION_ALL_STYLES) {
michael@0:         // Try all specific names and exemplar location names
michael@0:         if (parsedPos < maxPos) {
michael@0:             LocalPointer<TimeZoneNames::MatchInfoCollection> specificMatches(fTimeZoneNames->find(text, startIdx, ALL_SIMPLE_NAME_TYPES, status));
michael@0:             if (U_FAILURE(status)) {
michael@0:                 pos.setErrorIndex(startIdx);
michael@0:                 return NULL;
michael@0:             }
michael@0:             int32_t specificMatchIdx = -1;
michael@0:             int32_t matchPos = -1;
michael@0:             if (!specificMatches.isNull()) {
michael@0:                 for (int32_t i = 0; i < specificMatches->size(); i++) {
michael@0:                     if (startIdx + specificMatches->getMatchLengthAt(i) > matchPos) {
michael@0:                         specificMatchIdx = i;
michael@0:                         matchPos = startIdx + specificMatches->getMatchLengthAt(i);
michael@0:                     }
michael@0:                 }
michael@0:             }
michael@0:             if (parsedPos < matchPos) {
michael@0:                 U_ASSERT(specificMatchIdx >= 0);
michael@0:                 parsedPos = matchPos;
michael@0:                 getTimeZoneID(specificMatches.getAlias(), specificMatchIdx, parsedID);
michael@0:                 parsedTimeType = getTimeType(specificMatches->getNameTypeAt(specificMatchIdx));
michael@0:                 parsedOffset = UNKNOWN_OFFSET;
michael@0:             }
michael@0:         }
michael@0:         // Try generic names
michael@0:         if (parsedPos < maxPos) {
michael@0:             int32_t genMatchLen = -1;
michael@0:             UTimeZoneFormatTimeType tt = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0: 
michael@0:             const TimeZoneGenericNames *gnames = getTimeZoneGenericNames(status);
michael@0:             if (U_SUCCESS(status)) {
michael@0:                 genMatchLen = gnames->findBestMatch(text, startIdx, ALL_GENERIC_NAME_TYPES, tzID, tt, status);
michael@0:             }
michael@0:             if (U_FAILURE(status)) {
michael@0:                 pos.setErrorIndex(startIdx);
michael@0:                 return NULL;
michael@0:             }
michael@0: 
michael@0:             if (parsedPos < startIdx + genMatchLen) {
michael@0:                 parsedPos = startIdx + genMatchLen;
michael@0:                 parsedID.setTo(tzID);
michael@0:                 parsedTimeType = tt;
michael@0:                 parsedOffset = UNKNOWN_OFFSET;
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         // Try time zone ID
michael@0:         if (parsedPos < maxPos && (evaluated & STYLE_PARSE_FLAGS[UTZFMT_STYLE_ZONE_ID]) == 0) {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             parseZoneID(text, tmpPos, tzID);
michael@0:             if (tmpPos.getErrorIndex() == -1 && parsedPos < tmpPos.getIndex()) {
michael@0:                 parsedPos = tmpPos.getIndex();
michael@0:                 parsedID.setTo(tzID);
michael@0:                 parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:                 parsedOffset = UNKNOWN_OFFSET;
michael@0:             }
michael@0:         }
michael@0:         // Try short time zone ID
michael@0:         if (parsedPos < maxPos && (evaluated & STYLE_PARSE_FLAGS[UTZFMT_STYLE_ZONE_ID]) == 0) {
michael@0:             tmpPos.setIndex(startIdx);
michael@0:             tmpPos.setErrorIndex(-1);
michael@0: 
michael@0:             parseShortZoneID(text, tmpPos, tzID);
michael@0:             if (tmpPos.getErrorIndex() == -1 && parsedPos < tmpPos.getIndex()) {
michael@0:                 parsedPos = tmpPos.getIndex();
michael@0:                 parsedID.setTo(tzID);
michael@0:                 parsedTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
michael@0:                 parsedOffset = UNKNOWN_OFFSET;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (parsedPos > startIdx) {
michael@0:         // Parsed successfully
michael@0:         TimeZone* parsedTZ;
michael@0:         if (parsedID.length() > 0) {
michael@0:             parsedTZ = TimeZone::createTimeZone(parsedID);
michael@0:         } else {
michael@0:             U_ASSERT(parsedOffset != UNKNOWN_OFFSET);
michael@0:             parsedTZ = createTimeZoneForOffset(parsedOffset);
michael@0:         }
michael@0:         if (timeType) {
michael@0:             *timeType = parsedTimeType;
michael@0:         }
michael@0:         pos.setIndex(parsedPos);
michael@0:         return parsedTZ;
michael@0:     }
michael@0: 
michael@0:     pos.setErrorIndex(startIdx);
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::parseObject(const UnicodeString& source, Formattable& result,
michael@0:         ParsePosition& parse_pos) const {
michael@0:     result.adoptObject(parse(UTZFMT_STYLE_GENERIC_LOCATION, source, parse_pos, UTZFMT_PARSE_OPTION_ALL_STYLES));
michael@0: }
michael@0: 
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Private zone name format/parse implementation
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatGeneric(const TimeZone& tz, int32_t genType, UDate date, UnicodeString& name) const {
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     const TimeZoneGenericNames* gnames = getTimeZoneGenericNames(status);
michael@0:     if (U_FAILURE(status)) {
michael@0:         name.setToBogus();
michael@0:         return name;
michael@0:     }
michael@0: 
michael@0:     if (genType == UTZGNM_LOCATION) {
michael@0:         const UChar* canonicalID = ZoneMeta::getCanonicalCLDRID(tz);
michael@0:         if (canonicalID == NULL) {
michael@0:             name.setToBogus();
michael@0:             return name;
michael@0:         }
michael@0:         return gnames->getGenericLocationName(UnicodeString(canonicalID), name);
michael@0:     }
michael@0:     return gnames->getDisplayName(tz, (UTimeZoneGenericNameType)genType, date, name);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatSpecific(const TimeZone& tz, UTimeZoneNameType stdType, UTimeZoneNameType dstType,
michael@0:         UDate date, UnicodeString& name, UTimeZoneFormatTimeType *timeType) const {
michael@0:     if (fTimeZoneNames == NULL) {
michael@0:         name.setToBogus();
michael@0:         return name;
michael@0:     }
michael@0: 
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     UBool isDaylight = tz.inDaylightTime(date, status);
michael@0:     const UChar* canonicalID = ZoneMeta::getCanonicalCLDRID(tz);
michael@0: 
michael@0:     if (U_FAILURE(status) || canonicalID == NULL) {
michael@0:         name.setToBogus();
michael@0:         return name;
michael@0:     }
michael@0: 
michael@0:     if (isDaylight) {
michael@0:         fTimeZoneNames->getDisplayName(UnicodeString(canonicalID), dstType, date, name);
michael@0:     } else {
michael@0:         fTimeZoneNames->getDisplayName(UnicodeString(canonicalID), stdType, date, name);
michael@0:     }
michael@0: 
michael@0:     if (timeType && !name.isEmpty()) {
michael@0:         *timeType = isDaylight ? UTZFMT_TIME_TYPE_DAYLIGHT : UTZFMT_TIME_TYPE_STANDARD;
michael@0:     }
michael@0:     return name;
michael@0: }
michael@0: 
michael@0: const TimeZoneGenericNames*
michael@0: TimeZoneFormat::getTimeZoneGenericNames(UErrorCode& status) const {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     umtx_lock(&gLock);
michael@0:     if (fTimeZoneGenericNames == NULL) {
michael@0:         TimeZoneFormat *nonConstThis = const_cast<TimeZoneFormat *>(this);
michael@0:         nonConstThis->fTimeZoneGenericNames = TimeZoneGenericNames::createInstance(fLocale, status);
michael@0:     }
michael@0:     umtx_unlock(&gLock);
michael@0: 
michael@0:     return fTimeZoneGenericNames;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatExemplarLocation(const TimeZone& tz, UnicodeString& name) const {
michael@0:     UnicodeString location;
michael@0:     const UChar* canonicalID = ZoneMeta::getCanonicalCLDRID(tz);
michael@0: 
michael@0:     if (canonicalID) {
michael@0:         fTimeZoneNames->getExemplarLocationName(UnicodeString(canonicalID), location);
michael@0:     }
michael@0:     if (location.length() > 0) {
michael@0:         name.setTo(location);
michael@0:     } else {
michael@0:         // Use "unknown" location
michael@0:         fTimeZoneNames->getExemplarLocationName(UnicodeString(UNKNOWN_ZONE_ID), location);
michael@0:         if (location.length() > 0) {
michael@0:             name.setTo(location);
michael@0:         } else {
michael@0:             // last resort
michael@0:             name.setTo(UNKNOWN_LOCATION, -1);
michael@0:         }
michael@0:     }
michael@0:     return name;
michael@0: }
michael@0: 
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Zone offset format and parse
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetISO8601Basic(int32_t offset, UBool useUtcIndicator, UBool isShort, UBool ignoreSeconds,
michael@0:         UnicodeString& result, UErrorCode& status) const {
michael@0:     return formatOffsetISO8601(offset, TRUE, useUtcIndicator, isShort, ignoreSeconds, result, status);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetISO8601Extended(int32_t offset, UBool useUtcIndicator, UBool isShort, UBool ignoreSeconds,
michael@0:         UnicodeString& result, UErrorCode& status) const {
michael@0:     return formatOffsetISO8601(offset, FALSE, useUtcIndicator, isShort, ignoreSeconds, result, status);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetLocalizedGMT(int32_t offset, UnicodeString& result, UErrorCode& status) const {
michael@0:     return formatOffsetLocalizedGMT(offset, FALSE, result, status);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetShortLocalizedGMT(int32_t offset, UnicodeString& result, UErrorCode& status) const {
michael@0:     return formatOffsetLocalizedGMT(offset, TRUE, result, status);
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetISO8601(const UnicodeString& text, ParsePosition& pos) const {
michael@0:     return parseOffsetISO8601(text, pos, FALSE);
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetLocalizedGMT(const UnicodeString& text, ParsePosition& pos) const {
michael@0:     return parseOffsetLocalizedGMT(text, pos, FALSE, NULL);
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetShortLocalizedGMT(const UnicodeString& text, ParsePosition& pos) const {
michael@0:     return parseOffsetLocalizedGMT(text, pos, TRUE, NULL);
michael@0: }
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Private zone offset format/parse implementation
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetISO8601(int32_t offset, UBool isBasic, UBool useUtcIndicator,
michael@0:         UBool isShort, UBool ignoreSeconds, UnicodeString& result, UErrorCode& status) const {
michael@0:     if (U_FAILURE(status)) {
michael@0:         result.setToBogus();
michael@0:         return result;
michael@0:     }
michael@0:     int32_t absOffset = offset < 0 ? -offset : offset;
michael@0:     if (useUtcIndicator && (absOffset < MILLIS_PER_SECOND || (ignoreSeconds && absOffset < MILLIS_PER_MINUTE))) {
michael@0:         result.setTo(ISO8601_UTC);
michael@0:         return result;
michael@0:     }
michael@0: 
michael@0:     OffsetFields minFields = isShort ? FIELDS_H : FIELDS_HM;
michael@0:     OffsetFields maxFields = ignoreSeconds ? FIELDS_HM : FIELDS_HMS;
michael@0:     UChar sep = isBasic ? 0 : ISO8601_SEP;
michael@0: 
michael@0:     // Note: FIELDS_HMS as maxFields is a CLDR/ICU extension. ISO 8601 specification does
michael@0:     // not support seconds field.
michael@0: 
michael@0:     if (absOffset >= MAX_OFFSET) {
michael@0:         result.setToBogus();
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return result;
michael@0:     }
michael@0: 
michael@0:     int fields[3];
michael@0:     fields[0] = absOffset / MILLIS_PER_HOUR;
michael@0:     absOffset = absOffset % MILLIS_PER_HOUR;
michael@0:     fields[1] = absOffset / MILLIS_PER_MINUTE;
michael@0:     absOffset = absOffset % MILLIS_PER_MINUTE;
michael@0:     fields[2] = absOffset / MILLIS_PER_SECOND;
michael@0: 
michael@0:     U_ASSERT(fields[0] >= 0 && fields[0] <= MAX_OFFSET_HOUR);
michael@0:     U_ASSERT(fields[1] >= 0 && fields[1] <= MAX_OFFSET_MINUTE);
michael@0:     U_ASSERT(fields[2] >= 0 && fields[2] <= MAX_OFFSET_SECOND);
michael@0: 
michael@0:     int32_t lastIdx = maxFields;
michael@0:     while (lastIdx > minFields) {
michael@0:         if (fields[lastIdx] != 0) {
michael@0:             break;
michael@0:         }
michael@0:         lastIdx--;
michael@0:     }
michael@0: 
michael@0:     UChar sign = PLUS;
michael@0:     if (offset < 0) {
michael@0:         // if all output fields are 0s, do not use negative sign
michael@0:         for (int32_t idx = 0; idx <= lastIdx; idx++) {
michael@0:             if (fields[idx] != 0) {
michael@0:                 sign = MINUS;
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     result.setTo(sign);
michael@0: 
michael@0:     for (int32_t idx = 0; idx <= lastIdx; idx++) {
michael@0:         if (sep && idx != 0) {
michael@0:             result.append(sep);
michael@0:         }
michael@0:         result.append((UChar)(0x0030 + fields[idx]/10));
michael@0:         result.append((UChar)(0x0030 + fields[idx]%10));
michael@0:     }
michael@0: 
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetLocalizedGMT(int32_t offset, UBool isShort, UnicodeString& result, UErrorCode& status) const {
michael@0:     if (U_FAILURE(status)) {
michael@0:         result.setToBogus();
michael@0:         return result;
michael@0:     }
michael@0:     if (offset <= -MAX_OFFSET || offset >= MAX_OFFSET) {
michael@0:         result.setToBogus();
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return result;
michael@0:     }
michael@0: 
michael@0:     if (offset == 0) {
michael@0:         result.setTo(fGMTZeroFormat);
michael@0:         return result;
michael@0:     }
michael@0: 
michael@0:     UBool positive = TRUE;
michael@0:     if (offset < 0) {
michael@0:         offset = -offset;
michael@0:         positive = FALSE;
michael@0:     }
michael@0: 
michael@0:     int32_t offsetH = offset / MILLIS_PER_HOUR;
michael@0:     offset = offset % MILLIS_PER_HOUR;
michael@0:     int32_t offsetM = offset / MILLIS_PER_MINUTE;
michael@0:     offset = offset % MILLIS_PER_MINUTE;
michael@0:     int32_t offsetS = offset / MILLIS_PER_SECOND;
michael@0: 
michael@0:     U_ASSERT(offsetH <= MAX_OFFSET_HOUR && offsetM <= MAX_OFFSET_MINUTE && offsetS <= MAX_OFFSET_SECOND);
michael@0: 
michael@0:     const UVector* offsetPatternItems = NULL;
michael@0:     if (positive) {
michael@0:         if (offsetS != 0) {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_POSITIVE_HMS];
michael@0:         } else if (offsetM != 0 || !isShort) {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_POSITIVE_HM];
michael@0:         } else {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_POSITIVE_H];
michael@0:         }
michael@0:     } else {
michael@0:         if (offsetS != 0) {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_NEGATIVE_HMS];
michael@0:         } else if (offsetM != 0 || !isShort) {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_NEGATIVE_HM];
michael@0:         } else {
michael@0:             offsetPatternItems = fGMTOffsetPatternItems[UTZFMT_PAT_NEGATIVE_H];
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     U_ASSERT(offsetPatternItems != NULL);
michael@0: 
michael@0:     // Building the GMT format string
michael@0:     result.setTo(fGMTPatternPrefix);
michael@0: 
michael@0:     for (int32_t i = 0; i < offsetPatternItems->size(); i++) {
michael@0:         const GMTOffsetField* item = (GMTOffsetField*)offsetPatternItems->elementAt(i);
michael@0:         GMTOffsetField::FieldType type = item->getType();
michael@0: 
michael@0:         switch (type) {
michael@0:         case GMTOffsetField::TEXT:
michael@0:             result.append(item->getPatternText(), -1);
michael@0:             break;
michael@0: 
michael@0:         case GMTOffsetField::HOUR:
michael@0:             appendOffsetDigits(result, offsetH, (isShort ? 1 : 2));
michael@0:             break;
michael@0: 
michael@0:         case GMTOffsetField::MINUTE:
michael@0:             appendOffsetDigits(result, offsetM, 2);
michael@0:             break;
michael@0: 
michael@0:         case GMTOffsetField::SECOND:
michael@0:             appendOffsetDigits(result, offsetS, 2);
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     result.append(fGMTPatternSuffix);
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetISO8601(const UnicodeString& text, ParsePosition& pos, UBool extendedOnly, UBool* hasDigitOffset /* = NULL */) const {
michael@0:     if (hasDigitOffset) {
michael@0:         *hasDigitOffset = FALSE;
michael@0:     }
michael@0:     int32_t start = pos.getIndex();
michael@0:     if (start >= text.length()) {
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     UChar firstChar = text.charAt(start);
michael@0:     if (firstChar == ISO8601_UTC || firstChar == (UChar)(ISO8601_UTC + 0x20)) {
michael@0:         // "Z" (or "z") - indicates UTC
michael@0:         pos.setIndex(start + 1);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     int32_t sign = 1;
michael@0:     if (firstChar == PLUS) {
michael@0:         sign = 1;
michael@0:     } else if (firstChar == MINUS) {
michael@0:         sign = -1;
michael@0:     } else {
michael@0:         // Not an ISO 8601 offset string
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0:     ParsePosition posOffset(start + 1);
michael@0:     int32_t offset = parseAsciiOffsetFields(text, posOffset, ISO8601_SEP, FIELDS_H, FIELDS_HMS);
michael@0:     if (posOffset.getErrorIndex() == -1 && !extendedOnly && (posOffset.getIndex() - start <= 3)) {
michael@0:         // If the text is successfully parsed as extended format with the options above, it can be also parsed
michael@0:         // as basic format. For example, "0230" can be parsed as offset 2:00 (only first digits are valid for
michael@0:         // extended format), but it can be parsed as offset 2:30 with basic format. We use longer result.
michael@0:         ParsePosition posBasic(start + 1);
michael@0:         int32_t tmpOffset = parseAbuttingAsciiOffsetFields(text, posBasic, FIELDS_H, FIELDS_HMS, FALSE);
michael@0:         if (posBasic.getErrorIndex() == -1 && posBasic.getIndex() > posOffset.getIndex()) {
michael@0:             offset = tmpOffset;
michael@0:             posOffset.setIndex(posBasic.getIndex());
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (posOffset.getErrorIndex() != -1) {
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     pos.setIndex(posOffset.getIndex());
michael@0:     if (hasDigitOffset) {
michael@0:         *hasDigitOffset = TRUE;
michael@0:     }
michael@0:     return sign * offset;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetLocalizedGMT(const UnicodeString& text, ParsePosition& pos, UBool isShort, UBool* hasDigitOffset) const {
michael@0:     int32_t start = pos.getIndex();
michael@0:     int32_t offset = 0;
michael@0:     int32_t parsedLength = 0;
michael@0: 
michael@0:     if (hasDigitOffset) {
michael@0:         *hasDigitOffset = FALSE;
michael@0:     }
michael@0: 
michael@0:     offset = parseOffsetLocalizedGMTPattern(text, start, isShort, parsedLength);
michael@0: 
michael@0:     // For now, parseOffsetLocalizedGMTPattern handles both long and short
michael@0:     // formats, no matter isShort is true or false. This might be changed in future
michael@0:     // when strict parsing is necessary, or different set of patterns are used for
michael@0:     // short/long formats.
michael@0: #if 0
michael@0:     if (parsedLength == 0) {
michael@0:         offset = parseOffsetLocalizedGMTPattern(text, start, !isShort, parsedLength);
michael@0:     }
michael@0: #endif
michael@0: 
michael@0:     if (parsedLength > 0) {
michael@0:         if (hasDigitOffset) {
michael@0:             *hasDigitOffset = TRUE;
michael@0:         }
michael@0:         pos.setIndex(start + parsedLength);
michael@0:         return offset;
michael@0:     }
michael@0: 
michael@0:     // Try the default patterns
michael@0:     offset = parseOffsetDefaultLocalizedGMT(text, start, parsedLength);
michael@0:     if (parsedLength > 0) {
michael@0:         if (hasDigitOffset) {
michael@0:             *hasDigitOffset = TRUE;
michael@0:         }
michael@0:         pos.setIndex(start + parsedLength);
michael@0:         return offset;
michael@0:     }
michael@0: 
michael@0:     // Check if this is a GMT zero format
michael@0:     if (text.caseCompare(start, fGMTZeroFormat.length(), fGMTZeroFormat, 0) == 0) {
michael@0:         pos.setIndex(start + fGMTZeroFormat.length());
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     // Check if this is a default GMT zero format
michael@0:     for (int32_t i = 0; ALT_GMT_STRINGS[i][0] != 0; i++) {
michael@0:         const UChar* defGMTZero = ALT_GMT_STRINGS[i];
michael@0:         int32_t defGMTZeroLen = u_strlen(defGMTZero);
michael@0:         if (text.caseCompare(start, defGMTZeroLen, defGMTZero, 0) == 0) {
michael@0:             pos.setIndex(start + defGMTZeroLen);
michael@0:             return 0;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Nothing matched
michael@0:     pos.setErrorIndex(start);
michael@0:     return 0;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetLocalizedGMTPattern(const UnicodeString& text, int32_t start, UBool /*isShort*/, int32_t& parsedLen) const {
michael@0:     int32_t idx = start;
michael@0:     int32_t offset = 0;
michael@0:     UBool parsed = FALSE;
michael@0: 
michael@0:     do {
michael@0:         // Prefix part
michael@0:         int32_t len = fGMTPatternPrefix.length();
michael@0:         if (len > 0 && text.caseCompare(idx, len, fGMTPatternPrefix, 0) != 0) {
michael@0:             // prefix match failed
michael@0:             break;
michael@0:         }
michael@0:         idx += len;
michael@0: 
michael@0:         // Offset part
michael@0:         offset = parseOffsetFields(text, idx, FALSE, len);
michael@0:         if (len == 0) {
michael@0:             // offset field match failed
michael@0:             break;
michael@0:         }
michael@0:         idx += len;
michael@0: 
michael@0:         len = fGMTPatternSuffix.length();
michael@0:         if (len > 0 && text.caseCompare(idx, len, fGMTPatternSuffix, 0) != 0) {
michael@0:             // no suffix match
michael@0:             break;
michael@0:         }
michael@0:         idx += len;
michael@0:         parsed = TRUE;
michael@0:     } while (FALSE);
michael@0: 
michael@0:     parsedLen = parsed ? idx - start : 0;
michael@0:     return offset;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetFields(const UnicodeString& text, int32_t start, UBool /*isShort*/, int32_t& parsedLen) const {
michael@0:     int32_t outLen = 0;
michael@0:     int32_t offset = 0;
michael@0:     int32_t sign = 1;
michael@0: 
michael@0:     parsedLen = 0;
michael@0: 
michael@0:     int32_t offsetH, offsetM, offsetS;
michael@0:     offsetH = offsetM = offsetS = 0;
michael@0: 
michael@0:     for (int32_t patidx = 0; PARSE_GMT_OFFSET_TYPES[patidx] >= 0; patidx++) {
michael@0:         int32_t gmtPatType = PARSE_GMT_OFFSET_TYPES[patidx];
michael@0:         UVector* items = fGMTOffsetPatternItems[gmtPatType];
michael@0:         U_ASSERT(items != NULL);
michael@0: 
michael@0:         outLen = parseOffsetFieldsWithPattern(text, start, items, FALSE, offsetH, offsetM, offsetS);
michael@0:         if (outLen > 0) {
michael@0:             sign = (gmtPatType == UTZFMT_PAT_POSITIVE_H || gmtPatType == UTZFMT_PAT_POSITIVE_HM || gmtPatType == UTZFMT_PAT_POSITIVE_HMS) ?
michael@0:                 1 : -1;
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (outLen > 0 && fAbuttingOffsetHoursAndMinutes) {
michael@0:         // When hours field is sabutting minutes field,
michael@0:         // the parse result above may not be appropriate.
michael@0:         // For example, "01020" is parsed as 01:02: above,
michael@0:         // but it should be parsed as 00:10:20.
michael@0:         int32_t tmpLen = 0;
michael@0:         int32_t tmpSign = 1;
michael@0:         int32_t tmpH, tmpM, tmpS;
michael@0: 
michael@0:         for (int32_t patidx = 0; PARSE_GMT_OFFSET_TYPES[patidx] >= 0; patidx++) {
michael@0:             int32_t gmtPatType = PARSE_GMT_OFFSET_TYPES[patidx];
michael@0:             UVector* items = fGMTOffsetPatternItems[gmtPatType];
michael@0:             U_ASSERT(items != NULL);
michael@0: 
michael@0:             // forcing parse to use single hour digit
michael@0:             tmpLen = parseOffsetFieldsWithPattern(text, start, items, TRUE, tmpH, tmpM, tmpS);
michael@0:             if (tmpLen > 0) {
michael@0:                 tmpSign = (gmtPatType == UTZFMT_PAT_POSITIVE_H || gmtPatType == UTZFMT_PAT_POSITIVE_HM || gmtPatType == UTZFMT_PAT_POSITIVE_HMS) ?
michael@0:                     1 : -1;
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:         if (tmpLen > outLen) {
michael@0:             // Better parse result with single hour digit
michael@0:             outLen = tmpLen;
michael@0:             sign = tmpSign;
michael@0:             offsetH = tmpH;
michael@0:             offsetM = tmpM;
michael@0:             offsetS = tmpS;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (outLen > 0) {
michael@0:         offset = ((((offsetH * 60) + offsetM) * 60) + offsetS) * 1000 * sign;
michael@0:         parsedLen = outLen;
michael@0:     }
michael@0: 
michael@0:     return offset;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetFieldsWithPattern(const UnicodeString& text, int32_t start,
michael@0:         UVector* patternItems, UBool forceSingleHourDigit, int32_t& hour, int32_t& min, int32_t& sec) const {
michael@0:     UBool failed = FALSE;
michael@0:     int32_t offsetH, offsetM, offsetS;
michael@0:     offsetH = offsetM = offsetS = 0;
michael@0:     int32_t idx = start;
michael@0: 
michael@0:     for (int32_t i = 0; i < patternItems->size(); i++) {
michael@0:         int32_t len = 0;
michael@0:         const GMTOffsetField* field = (const GMTOffsetField*)patternItems->elementAt(i);
michael@0:         GMTOffsetField::FieldType fieldType = field->getType();
michael@0:         if (fieldType == GMTOffsetField::TEXT) {
michael@0:             const UChar* patStr = field->getPatternText();
michael@0:             len = u_strlen(patStr);
michael@0:             if (text.caseCompare(idx, len, patStr, 0) != 0) {
michael@0:                 failed = TRUE;
michael@0:                 break;
michael@0:             }
michael@0:             idx += len;
michael@0:         } else {
michael@0:             if (fieldType == GMTOffsetField::HOUR) {
michael@0:                 uint8_t maxDigits = forceSingleHourDigit ? 1 : 2;
michael@0:                 offsetH = parseOffsetFieldWithLocalizedDigits(text, idx, 1, maxDigits, 0, MAX_OFFSET_HOUR, len);
michael@0:             } else if (fieldType == GMTOffsetField::MINUTE) {
michael@0:                 offsetM = parseOffsetFieldWithLocalizedDigits(text, idx, 2, 2, 0, MAX_OFFSET_MINUTE, len);
michael@0:             } else if (fieldType == GMTOffsetField::SECOND) {
michael@0:                 offsetS = parseOffsetFieldWithLocalizedDigits(text, idx, 2, 2, 0, MAX_OFFSET_SECOND, len);
michael@0:             }
michael@0: 
michael@0:             if (len == 0) {
michael@0:                 failed = TRUE;
michael@0:                 break;
michael@0:             }
michael@0:             idx += len;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (failed) {
michael@0:         hour = min = sec = 0;
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     hour = offsetH;
michael@0:     min = offsetM;
michael@0:     sec = offsetS;
michael@0: 
michael@0:     return idx - start;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseAbuttingOffsetFields(const UnicodeString& text, int32_t start, int32_t& parsedLen) const {
michael@0:     int32_t digits[MAX_OFFSET_DIGITS];
michael@0:     int32_t parsed[MAX_OFFSET_DIGITS];  // accumulative offsets
michael@0: 
michael@0:     // Parse digits into int[]
michael@0:     int32_t idx = start;
michael@0:     int32_t len = 0;
michael@0:     int32_t numDigits = 0;
michael@0:     for (int32_t i = 0; i < MAX_OFFSET_DIGITS; i++) {
michael@0:         digits[i] = parseSingleLocalizedDigit(text, idx, len);
michael@0:         if (digits[i] < 0) {
michael@0:             break;
michael@0:         }
michael@0:         idx += len;
michael@0:         parsed[i] = idx - start;
michael@0:         numDigits++;
michael@0:     }
michael@0: 
michael@0:     if (numDigits == 0) {
michael@0:         parsedLen = 0;
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     int32_t offset = 0;
michael@0:     while (numDigits > 0) {
michael@0:         int32_t hour = 0;
michael@0:         int32_t min = 0;
michael@0:         int32_t sec = 0;
michael@0: 
michael@0:         U_ASSERT(numDigits > 0 && numDigits <= MAX_OFFSET_DIGITS);
michael@0:         switch (numDigits) {
michael@0:         case 1: // H
michael@0:             hour = digits[0];
michael@0:             break;
michael@0:         case 2: // HH
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             break;
michael@0:         case 3: // Hmm
michael@0:             hour = digits[0];
michael@0:             min = digits[1] * 10 + digits[2];
michael@0:             break;
michael@0:         case 4: // HHmm
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             min = digits[2] * 10 + digits[3];
michael@0:             break;
michael@0:         case 5: // Hmmss
michael@0:             hour = digits[0];
michael@0:             min = digits[1] * 10 + digits[2];
michael@0:             sec = digits[3] * 10 + digits[4];
michael@0:             break;
michael@0:         case 6: // HHmmss
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             min = digits[2] * 10 + digits[3];
michael@0:             sec = digits[4] * 10 + digits[5];
michael@0:             break;
michael@0:         }
michael@0:         if (hour <= MAX_OFFSET_HOUR && min <= MAX_OFFSET_MINUTE && sec <= MAX_OFFSET_SECOND) {
michael@0:             // found a valid combination
michael@0:             offset = hour * MILLIS_PER_HOUR + min * MILLIS_PER_MINUTE + sec * MILLIS_PER_SECOND;
michael@0:             parsedLen = parsed[numDigits - 1];
michael@0:             break;
michael@0:         }
michael@0:         numDigits--;
michael@0:     }
michael@0:     return offset;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetDefaultLocalizedGMT(const UnicodeString& text, int start, int32_t& parsedLen) const {
michael@0:     int32_t idx = start;
michael@0:     int32_t offset = 0;
michael@0:     int32_t parsed = 0;
michael@0: 
michael@0:     do {
michael@0:         // check global default GMT alternatives
michael@0:         int32_t gmtLen = 0;
michael@0: 
michael@0:         for (int32_t i = 0; ALT_GMT_STRINGS[i][0] != 0; i++) {
michael@0:             const UChar* gmt = ALT_GMT_STRINGS[i];
michael@0:             int32_t len = u_strlen(gmt);
michael@0:             if (text.caseCompare(start, len, gmt, 0) == 0) {
michael@0:                 gmtLen = len;
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:         if (gmtLen == 0) {
michael@0:             break;
michael@0:         }
michael@0:         idx += gmtLen;
michael@0: 
michael@0:         // offset needs a sign char and a digit at minimum
michael@0:         if (idx + 1 >= text.length()) {
michael@0:             break;
michael@0:         }
michael@0: 
michael@0:         // parse sign
michael@0:         int32_t sign = 1;
michael@0:         UChar c = text.charAt(idx);
michael@0:         if (c == PLUS) {
michael@0:             sign = 1;
michael@0:         } else if (c == MINUS) {
michael@0:             sign = -1;
michael@0:         } else {
michael@0:             break;
michael@0:         }
michael@0:         idx++;
michael@0: 
michael@0:         // offset part
michael@0:         // try the default pattern with the separator first
michael@0:         int32_t lenWithSep = 0;
michael@0:         int32_t offsetWithSep = parseDefaultOffsetFields(text, idx, DEFAULT_GMT_OFFSET_SEP, lenWithSep);
michael@0:         if (lenWithSep == text.length() - idx) {
michael@0:             // maximum match
michael@0:             offset = offsetWithSep * sign;
michael@0:             idx += lenWithSep;
michael@0:         } else {
michael@0:             // try abutting field pattern
michael@0:             int32_t lenAbut = 0;
michael@0:             int32_t offsetAbut = parseAbuttingOffsetFields(text, idx, lenAbut);
michael@0: 
michael@0:             if (lenWithSep > lenAbut) {
michael@0:                 offset = offsetWithSep * sign;
michael@0:                 idx += lenWithSep;
michael@0:             } else {
michael@0:                 offset = offsetAbut * sign;
michael@0:                 idx += lenAbut;
michael@0:             }
michael@0:         }
michael@0:         parsed = idx - start;
michael@0:     } while (false);
michael@0: 
michael@0:     parsedLen = parsed;
michael@0:     return offset;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseDefaultOffsetFields(const UnicodeString& text, int32_t start, UChar separator, int32_t& parsedLen) const {
michael@0:     int32_t max = text.length();
michael@0:     int32_t idx = start;
michael@0:     int32_t len = 0;
michael@0:     int32_t hour = 0, min = 0, sec = 0;
michael@0: 
michael@0:     parsedLen = 0;
michael@0: 
michael@0:     do {
michael@0:         hour = parseOffsetFieldWithLocalizedDigits(text, idx, 1, 2, 0, MAX_OFFSET_HOUR, len);
michael@0:         if (len == 0) {
michael@0:             break;
michael@0:         }
michael@0:         idx += len;
michael@0: 
michael@0:         if (idx + 1 < max && text.charAt(idx) == separator) {
michael@0:             min = parseOffsetFieldWithLocalizedDigits(text, idx + 1, 2, 2, 0, MAX_OFFSET_MINUTE, len);
michael@0:             if (len == 0) {
michael@0:                 break;
michael@0:             }
michael@0:             idx += (1 + len);
michael@0: 
michael@0:             if (idx + 1 < max && text.charAt(idx) == separator) {
michael@0:                 sec = parseOffsetFieldWithLocalizedDigits(text, idx + 1, 2, 2, 0, MAX_OFFSET_SECOND, len);
michael@0:                 if (len == 0) {
michael@0:                     break;
michael@0:                 }
michael@0:                 idx += (1 + len);
michael@0:             }
michael@0:         }
michael@0:     } while (FALSE);
michael@0: 
michael@0:     if (idx == start) {
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     parsedLen = idx - start;
michael@0:     return hour * MILLIS_PER_HOUR + min * MILLIS_PER_MINUTE + sec * MILLIS_PER_SECOND;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseOffsetFieldWithLocalizedDigits(const UnicodeString& text, int32_t start, uint8_t minDigits, uint8_t maxDigits, uint16_t minVal, uint16_t maxVal, int32_t& parsedLen) const {
michael@0:     parsedLen = 0;
michael@0: 
michael@0:     int32_t decVal = 0;
michael@0:     int32_t numDigits = 0;
michael@0:     int32_t idx = start;
michael@0:     int32_t digitLen = 0;
michael@0: 
michael@0:     while (idx < text.length() && numDigits < maxDigits) {
michael@0:         int32_t digit = parseSingleLocalizedDigit(text, idx, digitLen);
michael@0:         if (digit < 0) {
michael@0:             break;
michael@0:         }
michael@0:         int32_t tmpVal = decVal * 10 + digit;
michael@0:         if (tmpVal > maxVal) {
michael@0:             break;
michael@0:         }
michael@0:         decVal = tmpVal;
michael@0:         numDigits++;
michael@0:         idx += digitLen;
michael@0:     }
michael@0: 
michael@0:     // Note: maxVal is checked in the while loop
michael@0:     if (numDigits < minDigits || decVal < minVal) {
michael@0:         decVal = -1;
michael@0:         numDigits = 0;
michael@0:     } else {
michael@0:         parsedLen = idx - start;
michael@0:     }
michael@0: 
michael@0:     return decVal;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseSingleLocalizedDigit(const UnicodeString& text, int32_t start, int32_t& len) const {
michael@0:     int32_t digit = -1;
michael@0:     len = 0;
michael@0:     if (start < text.length()) {
michael@0:         UChar32 cp = text.char32At(start);
michael@0: 
michael@0:         // First, try digits configured for this instance
michael@0:         for (int32_t i = 0; i < 10; i++) {
michael@0:             if (cp == fGMTOffsetDigits[i]) {
michael@0:                 digit = i;
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:         // If failed, check if this is a Unicode digit
michael@0:         if (digit < 0) {
michael@0:             int32_t tmp = u_charDigitValue(cp);
michael@0:             digit = (tmp >= 0 && tmp <= 9) ? tmp : -1;
michael@0:         }
michael@0: 
michael@0:         if (digit >= 0) {
michael@0:             int32_t next = text.moveIndex32(start, 1);
michael@0:             len = next - start;
michael@0:         }
michael@0:     }
michael@0:     return digit;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::formatOffsetWithAsciiDigits(int32_t offset, UChar sep, OffsetFields minFields, OffsetFields maxFields, UnicodeString& result) {
michael@0:     U_ASSERT(maxFields >= minFields);
michael@0:     U_ASSERT(offset > -MAX_OFFSET && offset < MAX_OFFSET);
michael@0: 
michael@0:     UChar sign = PLUS;
michael@0:     if (offset < 0) {
michael@0:         sign = MINUS;
michael@0:         offset = -offset;
michael@0:     }
michael@0:     result.setTo(sign);
michael@0: 
michael@0:     int fields[3];
michael@0:     fields[0] = offset / MILLIS_PER_HOUR;
michael@0:     offset = offset % MILLIS_PER_HOUR;
michael@0:     fields[1] = offset / MILLIS_PER_MINUTE;
michael@0:     offset = offset % MILLIS_PER_MINUTE;
michael@0:     fields[2] = offset / MILLIS_PER_SECOND;
michael@0: 
michael@0:     U_ASSERT(fields[0] >= 0 && fields[0] <= MAX_OFFSET_HOUR);
michael@0:     U_ASSERT(fields[1] >= 0 && fields[1] <= MAX_OFFSET_MINUTE);
michael@0:     U_ASSERT(fields[2] >= 0 && fields[2] <= MAX_OFFSET_SECOND);
michael@0: 
michael@0:     int32_t lastIdx = maxFields;
michael@0:     while (lastIdx > minFields) {
michael@0:         if (fields[lastIdx] != 0) {
michael@0:             break;
michael@0:         }
michael@0:         lastIdx--;
michael@0:     }
michael@0: 
michael@0:     for (int32_t idx = 0; idx <= lastIdx; idx++) {
michael@0:         if (sep && idx != 0) {
michael@0:             result.append(sep);
michael@0:         }
michael@0:         result.append((UChar)(0x0030 + fields[idx]/10));
michael@0:         result.append((UChar)(0x0030 + fields[idx]%10));
michael@0:     }
michael@0: 
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseAbuttingAsciiOffsetFields(const UnicodeString& text, ParsePosition& pos, OffsetFields minFields, OffsetFields maxFields, UBool fixedHourWidth) {
michael@0:     int32_t start = pos.getIndex();
michael@0: 
michael@0:     int32_t minDigits = 2 * (minFields + 1) - (fixedHourWidth ? 0 : 1);
michael@0:     int32_t maxDigits = 2 * (maxFields + 1);
michael@0: 
michael@0:     U_ASSERT(maxDigits <= MAX_OFFSET_DIGITS);
michael@0: 
michael@0:     int32_t digits[MAX_OFFSET_DIGITS] = {};
michael@0:     int32_t numDigits = 0;
michael@0:     int32_t idx = start;
michael@0:     while (numDigits < maxDigits && idx < text.length()) {
michael@0:         UChar uch = text.charAt(idx);
michael@0:         int32_t digit = DIGIT_VAL(uch);
michael@0:         if (digit < 0) {
michael@0:             break;
michael@0:         }
michael@0:         digits[numDigits] = digit;
michael@0:         numDigits++;
michael@0:         idx++;
michael@0:     }
michael@0: 
michael@0:     if (fixedHourWidth && (numDigits & 1)) {
michael@0:         // Fixed digits, so the number of digits must be even number. Truncating.
michael@0:         numDigits--;
michael@0:     }
michael@0: 
michael@0:     if (numDigits < minDigits) {
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     int32_t hour = 0, min = 0, sec = 0;
michael@0:     UBool bParsed = FALSE;
michael@0:     while (numDigits >= minDigits) {
michael@0:         switch (numDigits) {
michael@0:         case 1: //H
michael@0:             hour = digits[0];
michael@0:             break;
michael@0:         case 2: //HH
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             break;
michael@0:         case 3: //Hmm
michael@0:             hour = digits[0];
michael@0:             min = digits[1] * 10 + digits[2];
michael@0:             break;
michael@0:         case 4: //HHmm
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             min = digits[2] * 10 + digits[3];
michael@0:             break;
michael@0:         case 5: //Hmmss
michael@0:             hour = digits[0];
michael@0:             min = digits[1] * 10 + digits[2];
michael@0:             sec = digits[3] * 10 + digits[4];
michael@0:             break;
michael@0:         case 6: //HHmmss
michael@0:             hour = digits[0] * 10 + digits[1];
michael@0:             min = digits[2] * 10 + digits[3];
michael@0:             sec = digits[4] * 10 + digits[5];
michael@0:             break;
michael@0:         }
michael@0: 
michael@0:         if (hour <= MAX_OFFSET_HOUR && min <= MAX_OFFSET_MINUTE && sec <= MAX_OFFSET_SECOND) {
michael@0:             // Successfully parsed
michael@0:             bParsed = true;
michael@0:             break;
michael@0:         }
michael@0: 
michael@0:         // Truncating
michael@0:         numDigits -= (fixedHourWidth ? 2 : 1);
michael@0:         hour = min = sec = 0;
michael@0:     }
michael@0: 
michael@0:     if (!bParsed) {
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0:     pos.setIndex(start + numDigits);
michael@0:     return ((((hour * 60) + min) * 60) + sec) * 1000;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: TimeZoneFormat::parseAsciiOffsetFields(const UnicodeString& text, ParsePosition& pos, UChar sep, OffsetFields minFields, OffsetFields maxFields) {
michael@0:     int32_t start = pos.getIndex();
michael@0:     int32_t fieldVal[] = {0, 0, 0};
michael@0:     int32_t fieldLen[] = {0, -1, -1};
michael@0:     for (int32_t idx = start, fieldIdx = 0; idx < text.length() && fieldIdx <= maxFields; idx++) {
michael@0:         UChar c = text.charAt(idx);
michael@0:         if (c == sep) {
michael@0:             if (fieldIdx == 0) {
michael@0:                 if (fieldLen[0] == 0) {
michael@0:                     // no hours field
michael@0:                     break;
michael@0:                 }
michael@0:                 // 1 digit hour, move to next field
michael@0:             } else {
michael@0:                 if (fieldLen[fieldIdx] != -1) {
michael@0:                     // premature minute or seconds field
michael@0:                     break;
michael@0:                 }
michael@0:                 fieldLen[fieldIdx] = 0;
michael@0:             }
michael@0:             continue;
michael@0:         } else if (fieldLen[fieldIdx] == -1) {
michael@0:             // no separator after 2 digit field
michael@0:             break;
michael@0:         }
michael@0:         int32_t digit = DIGIT_VAL(c);
michael@0:         if (digit < 0) {
michael@0:             // not a digit
michael@0:             break;
michael@0:         }
michael@0:         fieldVal[fieldIdx] = fieldVal[fieldIdx] * 10 + digit;
michael@0:         fieldLen[fieldIdx]++;
michael@0:         if (fieldLen[fieldIdx] >= 2) {
michael@0:             // parsed 2 digits, move to next field
michael@0:             fieldIdx++;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     int32_t offset = 0;
michael@0:     int32_t parsedLen = 0;
michael@0:     int32_t parsedFields = -1;
michael@0:     do {
michael@0:         // hour
michael@0:         if (fieldLen[0] == 0) {
michael@0:             break;
michael@0:         }
michael@0:         if (fieldVal[0] > MAX_OFFSET_HOUR) {
michael@0:             offset = (fieldVal[0] / 10) * MILLIS_PER_HOUR;
michael@0:             parsedFields = FIELDS_H;
michael@0:             parsedLen = 1;
michael@0:             break;
michael@0:         }
michael@0:         offset = fieldVal[0] * MILLIS_PER_HOUR;
michael@0:         parsedLen = fieldLen[0];
michael@0:         parsedFields = FIELDS_H;
michael@0: 
michael@0:         // minute
michael@0:         if (fieldLen[1] != 2 || fieldVal[1] > MAX_OFFSET_MINUTE) {
michael@0:             break;
michael@0:         }
michael@0:         offset += fieldVal[1] * MILLIS_PER_MINUTE;
michael@0:         parsedLen += (1 + fieldLen[1]);
michael@0:         parsedFields = FIELDS_HM;
michael@0: 
michael@0:         // second
michael@0:         if (fieldLen[2] != 2 || fieldVal[2] > MAX_OFFSET_SECOND) {
michael@0:             break;
michael@0:         }
michael@0:         offset += fieldVal[2] * MILLIS_PER_SECOND;
michael@0:         parsedLen += (1 + fieldLen[2]);
michael@0:         parsedFields = FIELDS_HMS;
michael@0:     } while (false);
michael@0: 
michael@0:     if (parsedFields < minFields) {
michael@0:         pos.setErrorIndex(start);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     pos.setIndex(start + parsedLen);
michael@0:     return offset;
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::appendOffsetDigits(UnicodeString& buf, int32_t n, uint8_t minDigits) const {
michael@0:     U_ASSERT(n >= 0 && n < 60);
michael@0:     int32_t numDigits = n >= 10 ? 2 : 1;
michael@0:     for (int32_t i = 0; i < minDigits - numDigits; i++) {
michael@0:         buf.append(fGMTOffsetDigits[0]);
michael@0:     }
michael@0:     if (numDigits == 2) {
michael@0:         buf.append(fGMTOffsetDigits[n / 10]);
michael@0:     }
michael@0:     buf.append(fGMTOffsetDigits[n % 10]);
michael@0: }
michael@0: 
michael@0: // ------------------------------------------------------------------
michael@0: // Private misc
michael@0: void
michael@0: TimeZoneFormat::initGMTPattern(const UnicodeString& gmtPattern, UErrorCode& status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return;
michael@0:     }
michael@0:     // This implementation not perfect, but sufficient practically.
michael@0:     int32_t idx = gmtPattern.indexOf(ARG0, ARG0_LEN, 0);
michael@0:     if (idx < 0) {
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return;
michael@0:     }
michael@0:     fGMTPattern.setTo(gmtPattern);
michael@0:     unquote(gmtPattern.tempSubString(0, idx), fGMTPatternPrefix);
michael@0:     unquote(gmtPattern.tempSubString(idx + ARG0_LEN), fGMTPatternSuffix);
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::unquote(const UnicodeString& pattern, UnicodeString& result) {
michael@0:     if (pattern.indexOf(SINGLEQUOTE) < 0) {
michael@0:         result.setTo(pattern);
michael@0:         return result;
michael@0:     }
michael@0:     result.remove();
michael@0:     UBool isPrevQuote = FALSE;
michael@0:     UBool inQuote = FALSE;
michael@0:     for (int32_t i = 0; i < pattern.length(); i++) {
michael@0:         UChar c = pattern.charAt(i);
michael@0:         if (c == SINGLEQUOTE) {
michael@0:             if (isPrevQuote) {
michael@0:                 result.append(c);
michael@0:                 isPrevQuote = FALSE;
michael@0:             } else {
michael@0:                 isPrevQuote = TRUE;
michael@0:             }
michael@0:             inQuote = !inQuote;
michael@0:         } else {
michael@0:             isPrevQuote = FALSE;
michael@0:             result.append(c);
michael@0:         }
michael@0:     }
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: UVector*
michael@0: TimeZoneFormat::parseOffsetPattern(const UnicodeString& pattern, OffsetFields required, UErrorCode& status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return NULL;
michael@0:     }
michael@0:     UVector* result = new UVector(deleteGMTOffsetField, NULL, status);
michael@0:     if (result == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     int32_t checkBits = 0;
michael@0:     UBool isPrevQuote = FALSE;
michael@0:     UBool inQuote = FALSE;
michael@0:     UnicodeString text;
michael@0:     GMTOffsetField::FieldType itemType = GMTOffsetField::TEXT;
michael@0:     int32_t itemLength = 1;
michael@0: 
michael@0:     for (int32_t i = 0; i < pattern.length(); i++) {
michael@0:         UChar ch = pattern.charAt(i);
michael@0:         if (ch == SINGLEQUOTE) {
michael@0:             if (isPrevQuote) {
michael@0:                 text.append(SINGLEQUOTE);
michael@0:                 isPrevQuote = FALSE;
michael@0:             } else {
michael@0:                 isPrevQuote = TRUE;
michael@0:                 if (itemType != GMTOffsetField::TEXT) {
michael@0:                     if (GMTOffsetField::isValid(itemType, itemLength)) {
michael@0:                         GMTOffsetField* fld = GMTOffsetField::createTimeField(itemType, (uint8_t)itemLength, status);
michael@0:                         result->addElement(fld, status);
michael@0:                         if (U_FAILURE(status)) {
michael@0:                             break;
michael@0:                         }
michael@0:                     } else {
michael@0:                         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:                         break;
michael@0:                     }
michael@0:                     itemType = GMTOffsetField::TEXT;
michael@0:                 }
michael@0:             }
michael@0:             inQuote = !inQuote;
michael@0:         } else {
michael@0:             isPrevQuote = FALSE;
michael@0:             if (inQuote) {
michael@0:                 text.append(ch);
michael@0:             } else {
michael@0:                 GMTOffsetField::FieldType tmpType = GMTOffsetField::getTypeByLetter(ch);
michael@0:                 if (tmpType != GMTOffsetField::TEXT) {
michael@0:                     // an offset time pattern character
michael@0:                     if (tmpType == itemType) {
michael@0:                         itemLength++;
michael@0:                     } else {
michael@0:                         if (itemType == GMTOffsetField::TEXT) {
michael@0:                             if (text.length() > 0) {
michael@0:                                 GMTOffsetField* textfld = GMTOffsetField::createText(text, status);
michael@0:                                 result->addElement(textfld, status);
michael@0:                                 if (U_FAILURE(status)) {
michael@0:                                     break;
michael@0:                                 }
michael@0:                                 text.remove();
michael@0:                             }
michael@0:                         } else {
michael@0:                             if (GMTOffsetField::isValid(itemType, itemLength)) {
michael@0:                                 GMTOffsetField* fld = GMTOffsetField::createTimeField(itemType, itemLength, status);
michael@0:                                 result->addElement(fld, status);
michael@0:                                 if (U_FAILURE(status)) {
michael@0:                                     break;
michael@0:                                 }
michael@0:                             } else {
michael@0:                                 status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:                                 break;
michael@0:                             }
michael@0:                         }
michael@0:                         itemType = tmpType;
michael@0:                         itemLength = 1;
michael@0:                         checkBits |= tmpType;
michael@0:                     }
michael@0:                 } else {
michael@0:                     // a string literal
michael@0:                     if (itemType != GMTOffsetField::TEXT) {
michael@0:                         if (GMTOffsetField::isValid(itemType, itemLength)) {
michael@0:                             GMTOffsetField* fld = GMTOffsetField::createTimeField(itemType, itemLength, status);
michael@0:                             result->addElement(fld, status);
michael@0:                             if (U_FAILURE(status)) {
michael@0:                                 break;
michael@0:                             }
michael@0:                         } else {
michael@0:                             status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:                             break;
michael@0:                         }
michael@0:                         itemType = GMTOffsetField::TEXT;
michael@0:                     }
michael@0:                     text.append(ch);
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     // handle last item
michael@0:     if (U_SUCCESS(status)) {
michael@0:         if (itemType == GMTOffsetField::TEXT) {
michael@0:             if (text.length() > 0) {
michael@0:                 GMTOffsetField* tfld = GMTOffsetField::createText(text, status);
michael@0:                 result->addElement(tfld, status);
michael@0:             }
michael@0:         } else {
michael@0:             if (GMTOffsetField::isValid(itemType, itemLength)) {
michael@0:                 GMTOffsetField* fld = GMTOffsetField::createTimeField(itemType, itemLength, status);
michael@0:                 result->addElement(fld, status);
michael@0:             } else {
michael@0:                 status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         // Check all required fields are set
michael@0:         if (U_SUCCESS(status)) {
michael@0:             int32_t reqBits = 0;
michael@0:             switch (required) {
michael@0:             case FIELDS_H:
michael@0:                 reqBits = GMTOffsetField::HOUR;
michael@0:                 break;
michael@0:             case FIELDS_HM:
michael@0:                 reqBits = GMTOffsetField::HOUR | GMTOffsetField::MINUTE;
michael@0:                 break;
michael@0:             case FIELDS_HMS:
michael@0:                 reqBits = GMTOffsetField::HOUR | GMTOffsetField::MINUTE | GMTOffsetField::SECOND;
michael@0:                 break;
michael@0:             }
michael@0:             if (checkBits == reqBits) {
michael@0:                 // all required fields are set, no extra fields
michael@0:                 return result;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // error
michael@0:     delete result;
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::expandOffsetPattern(const UnicodeString& offsetHM, UnicodeString& result, UErrorCode& status) {
michael@0:     result.setToBogus();
michael@0:     if (U_FAILURE(status)) {
michael@0:         return result;
michael@0:     }
michael@0:     U_ASSERT(u_strlen(DEFAULT_GMT_OFFSET_MINUTE_PATTERN) == 2);
michael@0: 
michael@0:     int32_t idx_mm = offsetHM.indexOf(DEFAULT_GMT_OFFSET_MINUTE_PATTERN, 2, 0);
michael@0:     if (idx_mm < 0) {
michael@0:         // Bad time zone hour pattern data
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return result;
michael@0:     }
michael@0: 
michael@0:     UnicodeString sep;
michael@0:     int32_t idx_H = offsetHM.tempSubString(0, idx_mm).lastIndexOf((UChar)0x0048 /* H */);
michael@0:     if (idx_H >= 0) {
michael@0:         sep = offsetHM.tempSubString(idx_H + 1, idx_mm - (idx_H + 1));
michael@0:     }
michael@0:     result.setTo(offsetHM.tempSubString(0, idx_mm + 2));
michael@0:     result.append(sep);
michael@0:     result.append(DEFAULT_GMT_OFFSET_SECOND_PATTERN, -1);
michael@0:     result.append(offsetHM.tempSubString(idx_mm + 2));
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::truncateOffsetPattern(const UnicodeString& offsetHM, UnicodeString& result, UErrorCode& status) {
michael@0:     result.setToBogus();
michael@0:     if (U_FAILURE(status)) {
michael@0:         return result;
michael@0:     }
michael@0:     U_ASSERT(u_strlen(DEFAULT_GMT_OFFSET_MINUTE_PATTERN) == 2);
michael@0: 
michael@0:     int32_t idx_mm = offsetHM.indexOf(DEFAULT_GMT_OFFSET_MINUTE_PATTERN, 2, 0);
michael@0:     if (idx_mm < 0) {
michael@0:         // Bad time zone hour pattern data
michael@0:         status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:         return result;
michael@0:     }
michael@0:     UChar HH[] = {0x0048, 0x0048};
michael@0:     int32_t idx_HH = offsetHM.tempSubString(0, idx_mm).lastIndexOf(HH, 2, 0);
michael@0:     if (idx_HH >= 0) {
michael@0:         return result.setTo(offsetHM.tempSubString(0, idx_HH + 2));
michael@0:     }
michael@0:     int32_t idx_H = offsetHM.tempSubString(0, idx_mm).lastIndexOf((UChar)0x0048, 0);
michael@0:     if (idx_H >= 0) {
michael@0:         return result.setTo(offsetHM.tempSubString(0, idx_H + 1));
michael@0:     }
michael@0:     // Bad time zone hour pattern data
michael@0:     status = U_ILLEGAL_ARGUMENT_ERROR;
michael@0:     return result;
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::initGMTOffsetPatterns(UErrorCode& status) {
michael@0:     for (int32_t type = 0; type < UTZFMT_PAT_COUNT; type++) {
michael@0:         switch (type) {
michael@0:         case UTZFMT_PAT_POSITIVE_H:
michael@0:         case UTZFMT_PAT_NEGATIVE_H:
michael@0:             fGMTOffsetPatternItems[type] = parseOffsetPattern(fGMTOffsetPatterns[type], FIELDS_H, status);
michael@0:             break;
michael@0:         case UTZFMT_PAT_POSITIVE_HM:
michael@0:         case UTZFMT_PAT_NEGATIVE_HM:
michael@0:             fGMTOffsetPatternItems[type] = parseOffsetPattern(fGMTOffsetPatterns[type], FIELDS_HM, status);
michael@0:             break;
michael@0:         case UTZFMT_PAT_POSITIVE_HMS:
michael@0:         case UTZFMT_PAT_NEGATIVE_HMS:
michael@0:             fGMTOffsetPatternItems[type] = parseOffsetPattern(fGMTOffsetPatterns[type], FIELDS_HMS, status);
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0:     checkAbuttingHoursAndMinutes();
michael@0: }
michael@0: 
michael@0: void
michael@0: TimeZoneFormat::checkAbuttingHoursAndMinutes() {
michael@0:     fAbuttingOffsetHoursAndMinutes= FALSE;
michael@0:     for (int32_t type = 0; type < UTZFMT_PAT_COUNT; type++) {
michael@0:         UBool afterH = FALSE;
michael@0:         UVector *items = fGMTOffsetPatternItems[type];
michael@0:         for (int32_t i = 0; i < items->size(); i++) {
michael@0:             const GMTOffsetField* item = (GMTOffsetField*)items->elementAt(i);
michael@0:             GMTOffsetField::FieldType type = item->getType();
michael@0:             if (type != GMTOffsetField::TEXT) {
michael@0:                 if (afterH) {
michael@0:                     fAbuttingOffsetHoursAndMinutes = TRUE;
michael@0:                     break;
michael@0:                 } else if (type == GMTOffsetField::HOUR) {
michael@0:                     afterH = TRUE;
michael@0:                 }
michael@0:             } else if (afterH) {
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:         if (fAbuttingOffsetHoursAndMinutes) {
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: UBool
michael@0: TimeZoneFormat::toCodePoints(const UnicodeString& str, UChar32* codeArray, int32_t size) {
michael@0:     int32_t count = str.countChar32();
michael@0:     if (count != size) {
michael@0:         return FALSE;
michael@0:     }
michael@0: 
michael@0:     for (int32_t idx = 0, start = 0; idx < size; idx++) {
michael@0:         codeArray[idx] = str.char32At(start);
michael@0:         start = str.moveIndex32(start, 1);
michael@0:     }
michael@0: 
michael@0:     return TRUE;
michael@0: }
michael@0: 
michael@0: TimeZone*
michael@0: TimeZoneFormat::createTimeZoneForOffset(int32_t offset) const {
michael@0:     if (offset == 0) {
michael@0:         // when offset is 0, we should use "Etc/GMT"
michael@0:         return TimeZone::createTimeZone(UnicodeString(TZID_GMT));
michael@0:     }
michael@0:     return ZoneMeta::createCustomTimeZone(offset);
michael@0: }
michael@0: 
michael@0: UTimeZoneFormatTimeType
michael@0: TimeZoneFormat::getTimeType(UTimeZoneNameType nameType) {
michael@0:     switch (nameType) {
michael@0:     case UTZNM_LONG_STANDARD:
michael@0:     case UTZNM_SHORT_STANDARD:
michael@0:         return UTZFMT_TIME_TYPE_STANDARD;
michael@0: 
michael@0:     case UTZNM_LONG_DAYLIGHT:
michael@0:     case UTZNM_SHORT_DAYLIGHT:
michael@0:         return UTZFMT_TIME_TYPE_DAYLIGHT;
michael@0: 
michael@0:     default:
michael@0:         U_ASSERT(FALSE);
michael@0:     }
michael@0:     return UTZFMT_TIME_TYPE_UNKNOWN;
michael@0: }
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::getTimeZoneID(const TimeZoneNames::MatchInfoCollection* matches, int32_t idx, UnicodeString& tzID) const {
michael@0:     if (!matches->getTimeZoneIDAt(idx, tzID)) {
michael@0:         UnicodeString mzID;
michael@0:         if (matches->getMetaZoneIDAt(idx, mzID)) {
michael@0:             fTimeZoneNames->getReferenceZoneID(mzID, fTargetRegion, tzID);
michael@0:         }
michael@0:     }
michael@0:     return tzID;
michael@0: }
michael@0: 
michael@0: 
michael@0: class ZoneIdMatchHandler : public TextTrieMapSearchResultHandler {
michael@0: public:
michael@0:     ZoneIdMatchHandler();
michael@0:     virtual ~ZoneIdMatchHandler();
michael@0: 
michael@0:     UBool handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status);
michael@0:     const UChar* getID();
michael@0:     int32_t getMatchLen();
michael@0: private:
michael@0:     int32_t fLen;
michael@0:     const UChar* fID;
michael@0: };
michael@0: 
michael@0: ZoneIdMatchHandler::ZoneIdMatchHandler() 
michael@0: : fLen(0), fID(NULL) {
michael@0: }
michael@0: 
michael@0: ZoneIdMatchHandler::~ZoneIdMatchHandler() {
michael@0: }
michael@0: 
michael@0: UBool
michael@0: ZoneIdMatchHandler::handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status) {
michael@0:     if (U_FAILURE(status)) {
michael@0:         return FALSE;
michael@0:     }
michael@0:     if (node->hasValues()) {
michael@0:         const UChar* id = (const UChar*)node->getValue(0);
michael@0:         if (id != NULL) {
michael@0:             if (fLen < matchLength) {
michael@0:                 fID = id;
michael@0:                 fLen = matchLength;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     return TRUE;
michael@0: }
michael@0: 
michael@0: const UChar*
michael@0: ZoneIdMatchHandler::getID() {
michael@0:     return fID;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: ZoneIdMatchHandler::getMatchLen() {
michael@0:     return fLen;
michael@0: }
michael@0: 
michael@0: 
michael@0: static void U_CALLCONV initZoneIdTrie(UErrorCode &status) {
michael@0:     U_ASSERT(gZoneIdTrie == NULL);
michael@0:     ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONEFORMAT, tzfmt_cleanup);
michael@0:     gZoneIdTrie = new TextTrieMap(TRUE, NULL);    // No deleter, because values are pooled by ZoneMeta
michael@0:     if (gZoneIdTrie == NULL) {
michael@0:         status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         return;
michael@0:     }
michael@0:     StringEnumeration *tzenum = TimeZone::createEnumeration();
michael@0:     const UnicodeString *id;
michael@0:     while ((id = tzenum->snext(status))) {
michael@0:         const UChar* uid = ZoneMeta::findTimeZoneID(*id);
michael@0:         if (uid) {
michael@0:             gZoneIdTrie->put(uid, const_cast<UChar *>(uid), status);
michael@0:         }
michael@0:     }
michael@0:     delete tzenum;
michael@0: }
michael@0: 
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::parseZoneID(const UnicodeString& text, ParsePosition& pos, UnicodeString& tzID) const {
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     umtx_initOnce(gZoneIdTrieInitOnce, &initZoneIdTrie, status);
michael@0: 
michael@0:     int32_t start = pos.getIndex();
michael@0:     int32_t len = 0;
michael@0:     tzID.setToBogus();
michael@0: 
michael@0:     if (U_SUCCESS(status)) {
michael@0:         LocalPointer<ZoneIdMatchHandler> handler(new ZoneIdMatchHandler());
michael@0:         gZoneIdTrie->search(text, start, handler.getAlias(), status); 
michael@0:         len = handler->getMatchLen();
michael@0:         if (len > 0) {
michael@0:             tzID.setTo(handler->getID(), -1);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (len > 0) {
michael@0:         pos.setIndex(start + len);
michael@0:     } else {
michael@0:         pos.setErrorIndex(start);
michael@0:     }
michael@0: 
michael@0:     return tzID;
michael@0: }
michael@0: 
michael@0: static void U_CALLCONV initShortZoneIdTrie(UErrorCode &status) {
michael@0:     U_ASSERT(gShortZoneIdTrie == NULL);
michael@0:     ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONEFORMAT, tzfmt_cleanup);
michael@0:     StringEnumeration *tzenum = TimeZone::createTimeZoneIDEnumeration(UCAL_ZONE_TYPE_CANONICAL, NULL, NULL, status);
michael@0:     if (U_SUCCESS(status)) {
michael@0:         gShortZoneIdTrie = new TextTrieMap(TRUE, NULL);    // No deleter, because values are pooled by ZoneMeta
michael@0:         if (gShortZoneIdTrie == NULL) {
michael@0:             status = U_MEMORY_ALLOCATION_ERROR;
michael@0:         } else {
michael@0:             const UnicodeString *id;
michael@0:             while ((id = tzenum->snext(status))) {
michael@0:                 const UChar* uID = ZoneMeta::findTimeZoneID(*id);
michael@0:                 const UChar* shortID = ZoneMeta::getShortID(*id);
michael@0:                 if (shortID && uID) {
michael@0:                     gShortZoneIdTrie->put(shortID, const_cast<UChar *>(uID), status);
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     delete tzenum;
michael@0: }
michael@0: 
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::parseShortZoneID(const UnicodeString& text, ParsePosition& pos, UnicodeString& tzID) const {
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     umtx_initOnce(gShortZoneIdTrieInitOnce, &initShortZoneIdTrie, status);
michael@0: 
michael@0:     int32_t start = pos.getIndex();
michael@0:     int32_t len = 0;
michael@0:     tzID.setToBogus();
michael@0: 
michael@0:     if (U_SUCCESS(status)) {
michael@0:         LocalPointer<ZoneIdMatchHandler> handler(new ZoneIdMatchHandler());
michael@0:         gShortZoneIdTrie->search(text, start, handler.getAlias(), status); 
michael@0:         len = handler->getMatchLen();
michael@0:         if (len > 0) {
michael@0:             tzID.setTo(handler->getID(), -1);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (len > 0) {
michael@0:         pos.setIndex(start + len);
michael@0:     } else {
michael@0:         pos.setErrorIndex(start);
michael@0:     }
michael@0: 
michael@0:     return tzID;
michael@0: }
michael@0: 
michael@0: 
michael@0: UnicodeString&
michael@0: TimeZoneFormat::parseExemplarLocation(const UnicodeString& text, ParsePosition& pos, UnicodeString& tzID) const {
michael@0:     int32_t startIdx = pos.getIndex();
michael@0:     int32_t parsedPos = -1;
michael@0:     tzID.setToBogus();
michael@0: 
michael@0:     UErrorCode status = U_ZERO_ERROR;
michael@0:     LocalPointer<TimeZoneNames::MatchInfoCollection> exemplarMatches(fTimeZoneNames->find(text, startIdx, UTZNM_EXEMPLAR_LOCATION, status));
michael@0:     if (U_FAILURE(status)) {
michael@0:         pos.setErrorIndex(startIdx);
michael@0:         return tzID;
michael@0:     }
michael@0:     int32_t matchIdx = -1;
michael@0:     if (!exemplarMatches.isNull()) {
michael@0:         for (int32_t i = 0; i < exemplarMatches->size(); i++) {
michael@0:             if (startIdx + exemplarMatches->getMatchLengthAt(i) > parsedPos) {
michael@0:                 matchIdx = i;
michael@0:                 parsedPos = startIdx + exemplarMatches->getMatchLengthAt(i);
michael@0:             }
michael@0:         }
michael@0:         if (parsedPos > 0) {
michael@0:             pos.setIndex(parsedPos);
michael@0:             getTimeZoneID(exemplarMatches.getAlias(), matchIdx, tzID);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (tzID.length() == 0) {
michael@0:         pos.setErrorIndex(startIdx);
michael@0:     }
michael@0: 
michael@0:     return tzID;
michael@0: }
michael@0: 
michael@0: U_NAMESPACE_END
michael@0: 
michael@0: #endif