icuSources/i18n/collationtailoring.cpp

   1 /*
   2 *******************************************************************************
   3 * Copyright (C) 2013-2014, International Business Machines
   4 * Corporation and others.  All Rights Reserved.
   5 *******************************************************************************
   6 * collationtailoring.cpp
   7 *
   8 * created on: 2013mar12
   9 * created by: Markus W. Scherer
  10 */
  11
  12 #include "unicode/utypes.h"
  13
  14 #if !UCONFIG_NO_COLLATION
  15
  16 #include "unicode/udata.h"
  17 #include "unicode/unistr.h"
  18 #include "unicode/ures.h"
  19 #include "unicode/uversion.h"
  20 #include "unicode/uvernum.h"
  21 #include "cmemory.h"
  22 #include "collationdata.h"
  23 #include "collationsettings.h"
  24 #include "collationtailoring.h"
  25 #include "normalizer2impl.h"
  26 #include "uassert.h"
  27 #include "uhash.h"
  28 #include "umutex.h"
  29 #include "utrie2.h"
  30
  31 U_NAMESPACE_BEGIN
  32
  33 CollationTailoring::CollationTailoring(const CollationSettings *baseSettings)
  34         : data(NULL), settings(baseSettings),
  35           actualLocale(""),
  36           ownedData(NULL),
  37           builder(NULL), memory(NULL), bundle(NULL),
  38           trie(NULL), unsafeBackwardSet(NULL),
  39           maxExpansions(NULL) {
  40     if(baseSettings != NULL) {
  41         U_ASSERT(baseSettings->reorderCodesLength == 0);
  42         U_ASSERT(baseSettings->reorderTable == NULL);
  43     } else {
  44         settings = new CollationSettings();
  45     }
  46     if(settings != NULL) {
  47         settings->addRef();
  48     }
  49     rules.getTerminatedBuffer();  // ensure NUL-termination
  50     version[0] = version[1] = version[2] = version[3] = 0;
  51     maxExpansionsInitOnce.reset();
  52 }
  53
  54 CollationTailoring::~CollationTailoring() {
  55     SharedObject::clearPtr(settings);
  56     delete ownedData;
  57     delete builder;
  58     udata_close(memory);
  59     ures_close(bundle);
  60     utrie2_close(trie);
  61     delete unsafeBackwardSet;
  62     uhash_close(maxExpansions);
  63     maxExpansionsInitOnce.reset();
  64 }
  65
  66 UBool
  67 CollationTailoring::ensureOwnedData(UErrorCode &errorCode) {
  68     if(U_FAILURE(errorCode)) { return FALSE; }
  69     if(ownedData == NULL) {
  70         const Normalizer2Impl *nfcImpl = Normalizer2Factory::getNFCImpl(errorCode);
  71         if(U_FAILURE(errorCode)) { return FALSE; }
  72         ownedData = new CollationData(*nfcImpl);
  73         if(ownedData == NULL) {
  74             errorCode = U_MEMORY_ALLOCATION_ERROR;
  75             return FALSE;
  76         }
  77     }
  78     data = ownedData;
  79     return TRUE;
  80 }
  81
  82 void
  83 CollationTailoring::makeBaseVersion(const UVersionInfo ucaVersion, UVersionInfo version) {
  84     version[0] = UCOL_BUILDER_VERSION;
  85     version[1] = (ucaVersion[0] << 3) + ucaVersion[1];
  86     version[2] = ucaVersion[2] << 6;
  87     version[3] = 0;
  88 }
  89
  90 void
  91 CollationTailoring::setVersion(const UVersionInfo baseVersion, const UVersionInfo rulesVersion) {
  92     version[0] = UCOL_BUILDER_VERSION;
  93     version[1] = baseVersion[1];
  94     version[2] = (baseVersion[2] & 0xc0) + ((rulesVersion[0] + (rulesVersion[0] >> 6)) & 0x3f);
  95     version[3] = (rulesVersion[1] << 3) + (rulesVersion[1] >> 5) + rulesVersion[2] +
  96             (rulesVersion[3] << 4) + (rulesVersion[3] >> 4);
  97 }
  98
  99 int32_t
 100 CollationTailoring::getUCAVersion() const {
 101     return ((int32_t)version[1] << 4) | (version[2] >> 6);
 102 }
 103
 104 U_NAMESPACE_END
 105
 106 #endif  // !UCONFIG_NO_COLLATION