1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2012-2014, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 *******************************************************************************
8 * collationroot.cpp
9 *
10 * created on: 2012dec17
11 * created by: Markus W. Scherer
12 */
13
14 #include "unicode/utypes.h"
15
16 #if !UCONFIG_NO_COLLATION
17
18 #include "unicode/coll.h"
19 #include "unicode/udata.h"
20 #include "collation.h"
21 #include "collationdata.h"
22 #include "collationdatareader.h"
23 #include "collationroot.h"
24 #include "collationsettings.h"
25 #include "collationtailoring.h"
26 #include "normalizer2impl.h"
27 #include "ucln_in.h"
28 #include "udatamem.h"
29 #include "umutex.h"
30
31 U_NAMESPACE_BEGIN
32
33 namespace {
34
35 static const CollationCacheEntry *rootSingleton = NULL;
36 static UInitOnce initOnce = U_INITONCE_INITIALIZER;
37
38 } // namespace
39
40 U_CDECL_BEGIN
41
uprv_collation_root_cleanup()42 static UBool U_CALLCONV uprv_collation_root_cleanup() {
43 SharedObject::clearPtr(rootSingleton);
44 initOnce.reset();
45 return TRUE;
46 }
47
48 U_CDECL_END
49
50 void U_CALLCONV
load(UErrorCode & errorCode)51 CollationRoot::load(UErrorCode &errorCode) {
52 if(U_FAILURE(errorCode)) { return; }
53 LocalPointer<CollationTailoring> t(new CollationTailoring(NULL));
54 if(t.isNull() || t->isBogus()) {
55 errorCode = U_MEMORY_ALLOCATION_ERROR;
56 return;
57 }
58 t->memory = udata_openChoice(U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "coll",
59 "icu", "ucadata",
60 CollationDataReader::isAcceptable, t->version, &errorCode);
61 if(U_FAILURE(errorCode)) { return; }
62 const uint8_t *inBytes = static_cast<const uint8_t *>(udata_getMemory(t->memory));
63 CollationDataReader::read(NULL, inBytes, udata_getLength(t->memory), *t, errorCode);
64 if(U_FAILURE(errorCode)) { return; }
65 ucln_i18n_registerCleanup(UCLN_I18N_COLLATION_ROOT, uprv_collation_root_cleanup);
66 CollationCacheEntry *entry = new CollationCacheEntry(Locale::getRoot(), t.getAlias());
67 if(entry != NULL) {
68 t.orphan(); // The rootSingleton took ownership of the tailoring.
69 entry->addRef();
70 rootSingleton = entry;
71 }
72 }
73
74 const CollationCacheEntry *
getRootCacheEntry(UErrorCode & errorCode)75 CollationRoot::getRootCacheEntry(UErrorCode &errorCode) {
76 umtx_initOnce(initOnce, CollationRoot::load, errorCode);
77 if(U_FAILURE(errorCode)) { return NULL; }
78 return rootSingleton;
79 }
80
81 const CollationTailoring *
getRoot(UErrorCode & errorCode)82 CollationRoot::getRoot(UErrorCode &errorCode) {
83 umtx_initOnce(initOnce, CollationRoot::load, errorCode);
84 if(U_FAILURE(errorCode)) { return NULL; }
85 return rootSingleton->tailoring;
86 }
87
88 const CollationData *
getData(UErrorCode & errorCode)89 CollationRoot::getData(UErrorCode &errorCode) {
90 const CollationTailoring *root = getRoot(errorCode);
91 if(U_FAILURE(errorCode)) { return NULL; }
92 return root->data;
93 }
94
95 const CollationSettings *
getSettings(UErrorCode & errorCode)96 CollationRoot::getSettings(UErrorCode &errorCode) {
97 const CollationTailoring *root = getRoot(errorCode);
98 if(U_FAILURE(errorCode)) { return NULL; }
99 return root->settings;
100 }
101
102 U_NAMESPACE_END
103
104 #endif // !UCONFIG_NO_COLLATION
105