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