icuSources/common/servlk.cpp

   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