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      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
    107