icuSources/common/servlk.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /**
   4  *******************************************************************************
   5  * Copyright (C) 2001-2014, International Business Machines Corporation and    *
   6  * others. All Rights Reserved.                                                *
   7  *******************************************************************************
   8  *
   9  *******************************************************************************
  10  */
  11 #include "unicode/utypes.h"
  12
  13 #if !UCONFIG_NO_SERVICE
  14
  15 #include "unicode/resbund.h"
  16 #include "uresimp.h"
  17 #include "cmemory.h"
  18 #include "servloc.h"
  19 #include "ustrfmt.h"
  20 #include "uhash.h"
  21 #include "charstr.h"
  22 #include "uassert.h"
  23
  24 #define UNDERSCORE_CHAR ((UChar)0x005f)
  25 #define AT_SIGN_CHAR    ((UChar)64)
  26 #define PERIOD_CHAR     ((UChar)46)
  27
  28 U_NAMESPACE_BEGIN
  29
  30 LocaleKey*
  31 LocaleKey::createWithCanonicalFallback(const UnicodeString* primaryID,
  32                                        const UnicodeString* canonicalFallbackID,
  33                                        UErrorCode& status)
  34 {
  35     return LocaleKey::createWithCanonicalFallback(primaryID, canonicalFallbackID, KIND_ANY, status);
  36 }
  37
  38 LocaleKey*
  39 LocaleKey::createWithCanonicalFallback(const UnicodeString* primaryID,
  40                                        const UnicodeString* canonicalFallbackID,
  41                                        int32_t kind,
  42                                        UErrorCode& status)
  43 {
  44     if (primaryID == NULL || U_FAILURE(status)) {
  45         return NULL;
  46     }
  47     UnicodeString canonicalPrimaryID;
  48     LocaleUtility::canonicalLocaleString(primaryID, canonicalPrimaryID);
  49     return new LocaleKey(*primaryID, canonicalPrimaryID, canonicalFallbackID, kind);
  50 }
  51
  52 LocaleKey::LocaleKey(const UnicodeString& primaryID,
  53                      const UnicodeString& canonicalPrimaryID,
  54                      const UnicodeString* canonicalFallbackID,
  55                      int32_t kind)
  56   : ICUServiceKey(primaryID)
  57   , _kind(kind)
  58   , _primaryID(canonicalPrimaryID)
  59   , _fallbackID()
  60   , _currentID()
  61 {
  62     _fallbackID.setToBogus();
  63     if (_primaryID.length() != 0) {
  64         if (canonicalFallbackID != NULL && _primaryID != *canonicalFallbackID) {
  65             _fallbackID = *canonicalFallbackID;
  66         }
  67     }
  68
  69     _currentID = _primaryID;
  70 }
  71
  72 LocaleKey::~LocaleKey() {}
  73
  74 UnicodeString&
  75 LocaleKey::prefix(UnicodeString& result) const {
  76     if (_kind != KIND_ANY) {
  77         UChar buffer[64];
  78         uprv_itou(buffer, 64, _kind, 10, 0);
  79         UnicodeString temp(buffer);
  80         result.append(temp);
  81     }
  82     return result;
  83 }
  84
  85 int32_t
  86 LocaleKey::kind() const {
  87     return _kind;
  88 }
  89
  90 UnicodeString&
  91 LocaleKey::canonicalID(UnicodeString& result) const {
  92     return result.append(_primaryID);
  93 }
  94
  95 UnicodeString&
  96 LocaleKey::currentID(UnicodeString& result) const {
  97     if (!_currentID.isBogus()) {
  98         result.append(_currentID);
  99     }
 100     return result;
 101 }
 102
 103 UnicodeString&
 104 LocaleKey::currentDescriptor(UnicodeString& result) const {
 105     if (!_currentID.isBogus()) {
 106         prefix(result).append(PREFIX_DELIMITER).append(_currentID);
 107     } else {
 108         result.setToBogus();
 109     }
 110     return result;
 111 }
 112
 113 Locale&
 114 LocaleKey::canonicalLocale(Locale& result) const {
 115     return LocaleUtility::initLocaleFromName(_primaryID, result);
 116 }
 117
 118 Locale&
 119 LocaleKey::currentLocale(Locale& result) const {
 120     return LocaleUtility::initLocaleFromName(_currentID, result);
 121 }
 122
 123 UBool
 124 LocaleKey::fallback() {
 125     if (!_currentID.isBogus()) {
 126         int x = _currentID.lastIndexOf(UNDERSCORE_CHAR);
 127         if (x != -1) {
 128             _currentID.remove(x); // truncate current or fallback, whichever we're pointing to
 129             return TRUE;
 130         }
 131
 132         if (!_fallbackID.isBogus()) {
 133             _currentID = _fallbackID;
 134             _fallbackID.setToBogus();
 135             return TRUE;
 136         }
 137
 138         if (_currentID.length() > 0) {
 139             _currentID.remove(0); // completely truncate
 140             return TRUE;
 141         }
 142
 143         _currentID.setToBogus();
 144     }
 145
 146     return FALSE;
 147 }
 148
 149 UBool
 150 LocaleKey::isFallbackOf(const UnicodeString& id) const {
 151     UnicodeString temp(id);
 152     parseSuffix(temp);
 153     return temp.indexOf(_primaryID) == 0 &&
 154         (temp.length() == _primaryID.length() ||
 155         temp.charAt(_primaryID.length()) == UNDERSCORE_CHAR);
 156 }
 157
 158 #ifdef SERVICE_DEBUG
 159 UnicodeString&
 160 LocaleKey::debug(UnicodeString& result) const
 161 {
 162     ICUServiceKey::debug(result);
 163     result.append((UnicodeString)" kind: ");
 164     result.append(_kind);
 165     result.append((UnicodeString)" primaryID: ");
 166     result.append(_primaryID);
 167     result.append((UnicodeString)" fallbackID: ");
 168     result.append(_fallbackID);
 169     result.append((UnicodeString)" currentID: ");
 170     result.append(_currentID);
 171     return result;
 172 }
 173
 174 UnicodeString&
 175 LocaleKey::debugClass(UnicodeString& result) const
 176 {
 177     return result.append((UnicodeString)"LocaleKey ");
 178 }
 179 #endif
 180
 181 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LocaleKey)
 182
 183 U_NAMESPACE_END
 184
 185 /* !UCONFIG_NO_SERVICE */
 186 #endif
 187
 188