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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2013-2015, International Business Machines
6 * Corporation and others.  All Rights Reserved.
7 *******************************************************************************
8 * collationtailoring.cpp
9 *
10 * created on: 2013mar12
11 * created by: Markus W. Scherer
12 */
13 
14 #include "unicode/utypes.h"
15 
16 #if !UCONFIG_NO_COLLATION
17 
18 #include "unicode/udata.h"
19 #include "unicode/unistr.h"
20 #include "unicode/ures.h"
21 #include "unicode/uversion.h"
22 #include "unicode/uvernum.h"
23 #include "cmemory.h"
24 #include "collationdata.h"
25 #include "collationsettings.h"
26 #include "collationtailoring.h"
27 #include "normalizer2impl.h"
28 #include "uassert.h"
29 #include "uhash.h"
30 #include "umutex.h"
31 #include "utrie2.h"
32 
33 U_NAMESPACE_BEGIN
34 
CollationTailoring(const CollationSettings * baseSettings)35 CollationTailoring::CollationTailoring(const CollationSettings *baseSettings)
36         : data(NULL), settings(baseSettings),
37           actualLocale(""),
38           ownedData(NULL),
39           builder(NULL), memory(NULL), bundle(NULL),
40           trie(NULL), unsafeBackwardSet(NULL),
41           maxExpansions(NULL) {
42     if(baseSettings != NULL) {
43         U_ASSERT(baseSettings->reorderCodesLength == 0);
44         U_ASSERT(baseSettings->reorderTable == NULL);
45         U_ASSERT(baseSettings->minHighNoReorder == 0);
46     } else {
47         settings = new CollationSettings();
48     }
49     if(settings != NULL) {
50         settings->addRef();
51     }
52     rules.getTerminatedBuffer();  // ensure NUL-termination
53     version[0] = version[1] = version[2] = version[3] = 0;
54     maxExpansionsInitOnce.reset();
55 }
56 
~CollationTailoring()57 CollationTailoring::~CollationTailoring() {
58     SharedObject::clearPtr(settings);
59     delete ownedData;
60     delete builder;
61     udata_close(memory);
62     ures_close(bundle);
63     utrie2_close(trie);
64     delete unsafeBackwardSet;
65     uhash_close(maxExpansions);
66     maxExpansionsInitOnce.reset();
67 }
68 
69 UBool
ensureOwnedData(UErrorCode & errorCode)70 CollationTailoring::ensureOwnedData(UErrorCode &errorCode) {
71     if(U_FAILURE(errorCode)) { return FALSE; }
72     if(ownedData == NULL) {
73         const Normalizer2Impl *nfcImpl = Normalizer2Factory::getNFCImpl(errorCode);
74         if(U_FAILURE(errorCode)) { return FALSE; }
75         ownedData = new CollationData(*nfcImpl);
76         if(ownedData == NULL) {
77             errorCode = U_MEMORY_ALLOCATION_ERROR;
78             return FALSE;
79         }
80     }
81     data = ownedData;
82     return TRUE;
83 }
84 
85 void
makeBaseVersion(const UVersionInfo ucaVersion,UVersionInfo version)86 CollationTailoring::makeBaseVersion(const UVersionInfo ucaVersion, UVersionInfo version) {
87     version[0] = UCOL_BUILDER_VERSION;
88     version[1] = (ucaVersion[0] << 3) + ucaVersion[1];
89     version[2] = ucaVersion[2] << 6;
90     version[3] = 0;
91 }
92 
93 void
setVersion(const UVersionInfo baseVersion,const UVersionInfo rulesVersion)94 CollationTailoring::setVersion(const UVersionInfo baseVersion, const UVersionInfo rulesVersion) {
95     version[0] = UCOL_BUILDER_VERSION;
96     version[1] = baseVersion[1];
97     version[2] = (baseVersion[2] & 0xc0) + ((rulesVersion[0] + (rulesVersion[0] >> 6)) & 0x3f);
98     version[3] = (rulesVersion[1] << 3) + (rulesVersion[1] >> 5) + rulesVersion[2] +
99             (rulesVersion[3] << 4) + (rulesVersion[3] >> 4);
100 }
101 
102 int32_t
getUCAVersion() const103 CollationTailoring::getUCAVersion() const {
104     return ((int32_t)version[1] << 4) | (version[2] >> 6);
105 }
106 
~CollationCacheEntry()107 CollationCacheEntry::~CollationCacheEntry() {
108     SharedObject::clearPtr(tailoring);
109 }
110 
111 U_NAMESPACE_END
112 
113 #endif  // !UCONFIG_NO_COLLATION
114