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      1 /**
      2  *******************************************************************************
      3  * Copyright (C) 2001-2004, International Business Machines Corporation and    *
      4  * others. All Rights Reserved.                                                *
      5  *******************************************************************************
      6  *
      7  *******************************************************************************
      8  */
      9 #include "unicode/utypes.h"
     10 
     11 #if !UCONFIG_NO_SERVICE
     12 
     13 #include "unicode/resbund.h"
     14 #include "uresimp.h"
     15 #include "cmemory.h"
     16 #include "servloc.h"
     17 #include "ustrfmt.h"
     18 #include "uhash.h"
     19 #include "charstr.h"
     20 #include "ucln_cmn.h"
     21 #include "uassert.h"
     22 
     23 #define UNDERSCORE_CHAR ((UChar)0x005f)
     24 #define AT_SIGN_CHAR    ((UChar)64)
     25 #define PERIOD_CHAR     ((UChar)46)
     26 
     27 U_NAMESPACE_BEGIN
     28 
     29 LocaleKey*
     30 LocaleKey::createWithCanonicalFallback(const UnicodeString* primaryID,
     31                                        const UnicodeString* canonicalFallbackID,
     32                                        UErrorCode& status)
     33 {
     34     return LocaleKey::createWithCanonicalFallback(primaryID, canonicalFallbackID, KIND_ANY, status);
     35 }
     36 
     37 LocaleKey*
     38 LocaleKey::createWithCanonicalFallback(const UnicodeString* primaryID,
     39                                        const UnicodeString* canonicalFallbackID,
     40                                        int32_t kind,
     41                                        UErrorCode& status)
     42 {
     43     if (primaryID == NULL || U_FAILURE(status)) {
     44         return NULL;
     45     }
     46     UnicodeString canonicalPrimaryID;
     47     LocaleUtility::canonicalLocaleString(primaryID, canonicalPrimaryID);
     48     return new LocaleKey(*primaryID, canonicalPrimaryID, canonicalFallbackID, kind);
     49 }
     50 
     51 LocaleKey::LocaleKey(const UnicodeString& primaryID,
     52                      const UnicodeString& canonicalPrimaryID,
     53                      const UnicodeString* canonicalFallbackID,
     54                      int32_t kind)
     55   : ICUServiceKey(primaryID)
     56   , _kind(kind)
     57   , _primaryID(canonicalPrimaryID)
     58   , _fallbackID()
     59   , _currentID()
     60 {
     61     _fallbackID.setToBogus();
     62     if (_primaryID.length() != 0) {
     63         if (canonicalFallbackID != NULL && _primaryID != *canonicalFallbackID) {
     64             _fallbackID = *canonicalFallbackID;
     65         }
     66     }
     67 
     68     _currentID = _primaryID;
     69 }
     70 
     71 LocaleKey::~LocaleKey() {}
     72 
     73 UnicodeString&
     74 LocaleKey::prefix(UnicodeString& result) const {
     75     if (_kind != KIND_ANY) {
     76         UChar buffer[64];
     77         uprv_itou(buffer, 64, _kind, 10, 0);
     78         UnicodeString temp(buffer);
     79         result.append(temp);
     80     }
     81     return result;
     82 }
     83 
     84 int32_t
     85 LocaleKey::kind() const {
     86     return _kind;
     87 }
     88 
     89 UnicodeString&
     90 LocaleKey::canonicalID(UnicodeString& result) const {
     91     return result.append(_primaryID);
     92 }
     93 
     94 UnicodeString&
     95 LocaleKey::currentID(UnicodeString& result) const {
     96     if (!_currentID.isBogus()) {
     97         result.append(_currentID);
     98     }
     99     return result;
    100 }
    101 
    102 UnicodeString&
    103 LocaleKey::currentDescriptor(UnicodeString& result) const {
    104     if (!_currentID.isBogus()) {
    105         prefix(result).append(PREFIX_DELIMITER).append(_currentID);
    106     } else {
    107         result.setToBogus();
    108     }
    109     return result;
    110 }
    111 
    112 Locale&
    113 LocaleKey::canonicalLocale(Locale& result) const {
    114     return LocaleUtility::initLocaleFromName(_primaryID, result);
    115 }
    116 
    117 Locale&
    118 LocaleKey::currentLocale(Locale& result) const {
    119     return LocaleUtility::initLocaleFromName(_currentID, result);
    120 }
    121 
    122 UBool
    123 LocaleKey::fallback() {
    124     if (!_currentID.isBogus()) {
    125         int x = _currentID.lastIndexOf(UNDERSCORE_CHAR);
    126         if (x != -1) {
    127             _currentID.remove(x); // truncate current or fallback, whichever we're pointing to
    128             return TRUE;
    129         }
    130 
    131         if (!_fallbackID.isBogus()) {
    132             _currentID = _fallbackID;
    133             _fallbackID.setToBogus();
    134             return TRUE;
    135         }
    136 
    137         if (_currentID.length() > 0) {
    138             _currentID.remove(0); // completely truncate
    139             return TRUE;
    140         }
    141 
    142         _currentID.setToBogus();
    143     }
    144 
    145     return FALSE;
    146 }
    147 
    148 UBool
    149 LocaleKey::isFallbackOf(const UnicodeString& id) const {
    150     UnicodeString temp(id);
    151     parseSuffix(temp);
    152     return temp.indexOf(_primaryID) == 0 &&
    153         (temp.length() == _primaryID.length() ||
    154         temp.charAt(_primaryID.length()) == UNDERSCORE_CHAR);
    155 }
    156 
    157 #ifdef SERVICE_DEBUG
    158 UnicodeString&
    159 LocaleKey::debug(UnicodeString& result) const
    160 {
    161     ICUServiceKey::debug(result);
    162     result.append(" kind: ");
    163     result.append(_kind);
    164     result.append(" primaryID: ");
    165     result.append(_primaryID);
    166     result.append(" fallbackID: ");
    167     result.append(_fallbackID);
    168     result.append(" currentID: ");
    169     result.append(_currentID);
    170     return result;
    171 }
    172 
    173 UnicodeString&
    174 LocaleKey::debugClass(UnicodeString& result) const
    175 {
    176     return result.append("LocaleKey ");
    177 }
    178 #endif
    179 
    180 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LocaleKey)
    181 
    182 U_NAMESPACE_END
    183 
    184 /* !UCONFIG_NO_SERVICE */
    185 #endif
    186 
    187 
    188