1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2010-2015, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 *******************************************************************************
8 *
9 *
10 * File NUMSYS.CPP
11 *
12 * Modification History:*
13 * Date Name Description
14 *
15 ********************************************************************************
16 */
17
18 #include "unicode/utypes.h"
19 #include "unicode/localpointer.h"
20 #include "unicode/uchar.h"
21 #include "unicode/unistr.h"
22 #include "unicode/ures.h"
23 #include "unicode/ustring.h"
24 #include "unicode/uloc.h"
25 #include "unicode/schriter.h"
26 #include "unicode/numsys.h"
27 #include "cstring.h"
28 #include "uassert.h"
29 #include "ucln_in.h"
30 #include "umutex.h"
31 #include "uresimp.h"
32 #include "numsys_impl.h"
33
34 #if !UCONFIG_NO_FORMATTING
35
36 U_NAMESPACE_BEGIN
37
38 // Useful constants
39
40 #define DEFAULT_DIGITS UNICODE_STRING_SIMPLE("0123456789")
41 static const char gNumberingSystems[] = "numberingSystems";
42 static const char gNumberElements[] = "NumberElements";
43 static const char gDefault[] = "default";
44 static const char gNative[] = "native";
45 static const char gTraditional[] = "traditional";
46 static const char gFinance[] = "finance";
47 static const char gDesc[] = "desc";
48 static const char gRadix[] = "radix";
49 static const char gAlgorithmic[] = "algorithmic";
50 static const char gLatn[] = "latn";
51
52
53 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumberingSystem)
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumsysNameEnumeration)54 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumsysNameEnumeration)
55
56 /**
57 * Default Constructor.
58 *
59 * @draft ICU 4.2
60 */
61
62 NumberingSystem::NumberingSystem() {
63 radix = 10;
64 algorithmic = FALSE;
65 UnicodeString defaultDigits = DEFAULT_DIGITS;
66 desc.setTo(defaultDigits);
67 uprv_strcpy(name,gLatn);
68 }
69
70 /**
71 * Copy constructor.
72 * @draft ICU 4.2
73 */
74
NumberingSystem(const NumberingSystem & other)75 NumberingSystem::NumberingSystem(const NumberingSystem& other)
76 : UObject(other) {
77 *this=other;
78 }
79
80 NumberingSystem* U_EXPORT2
createInstance(int32_t radix_in,UBool isAlgorithmic_in,const UnicodeString & desc_in,UErrorCode & status)81 NumberingSystem::createInstance(int32_t radix_in, UBool isAlgorithmic_in, const UnicodeString & desc_in, UErrorCode &status) {
82
83 if (U_FAILURE(status)) {
84 return nullptr;
85 }
86
87 if ( radix_in < 2 ) {
88 status = U_ILLEGAL_ARGUMENT_ERROR;
89 return nullptr;
90 }
91
92 if ( !isAlgorithmic_in ) {
93 if ( desc_in.countChar32() != radix_in ) {
94 status = U_ILLEGAL_ARGUMENT_ERROR;
95 return nullptr;
96 }
97 }
98
99 LocalPointer<NumberingSystem> ns(new NumberingSystem(), status);
100 if (U_FAILURE(status)) {
101 return nullptr;
102 }
103
104 ns->setRadix(radix_in);
105 ns->setDesc(desc_in);
106 ns->setAlgorithmic(isAlgorithmic_in);
107 ns->setName(nullptr);
108
109 return ns.orphan();
110 }
111
112 NumberingSystem* U_EXPORT2
createInstance(const Locale & inLocale,UErrorCode & status)113 NumberingSystem::createInstance(const Locale & inLocale, UErrorCode& status) {
114
115 if (U_FAILURE(status)) {
116 return nullptr;
117 }
118
119 UBool nsResolved = TRUE;
120 UBool usingFallback = FALSE;
121 char buffer[ULOC_KEYWORDS_CAPACITY];
122 int32_t count = inLocale.getKeywordValue("numbers", buffer, sizeof(buffer), status);
123 if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) {
124 // the "numbers" keyword exceeds ULOC_KEYWORDS_CAPACITY; ignore and use default.
125 count = 0;
126 status = U_ZERO_ERROR;
127 }
128 if ( count > 0 ) { // @numbers keyword was specified in the locale
129 U_ASSERT(count < ULOC_KEYWORDS_CAPACITY);
130 buffer[count] = '\0'; // Make sure it is null terminated.
131 if ( !uprv_strcmp(buffer,gDefault) || !uprv_strcmp(buffer,gNative) ||
132 !uprv_strcmp(buffer,gTraditional) || !uprv_strcmp(buffer,gFinance)) {
133 nsResolved = FALSE;
134 }
135 } else {
136 uprv_strcpy(buffer, gDefault);
137 nsResolved = FALSE;
138 }
139
140 if (!nsResolved) { // Resolve the numbering system ( default, native, traditional or finance ) into a "real" numbering system
141 UErrorCode localStatus = U_ZERO_ERROR;
142 LocalUResourceBundlePointer resource(ures_open(nullptr, inLocale.getName(), &localStatus));
143 LocalUResourceBundlePointer numberElementsRes(ures_getByKey(resource.getAlias(), gNumberElements, nullptr, &localStatus));
144 // Don't stomp on the catastrophic failure of OOM.
145 if (localStatus == U_MEMORY_ALLOCATION_ERROR) {
146 status = U_MEMORY_ALLOCATION_ERROR;
147 return nullptr;
148 }
149 while (!nsResolved) {
150 localStatus = U_ZERO_ERROR;
151 count = 0;
152 const UChar *nsName = ures_getStringByKeyWithFallback(numberElementsRes.getAlias(), buffer, &count, &localStatus);
153 // Don't stomp on the catastrophic failure of OOM.
154 if (localStatus == U_MEMORY_ALLOCATION_ERROR) {
155 status = U_MEMORY_ALLOCATION_ERROR;
156 return nullptr;
157 }
158 if ( count > 0 && count < ULOC_KEYWORDS_CAPACITY ) { // numbering system found
159 u_UCharsToChars(nsName, buffer, count);
160 buffer[count] = '\0'; // Make sure it is null terminated.
161 nsResolved = TRUE;
162 }
163
164 if (!nsResolved) { // Fallback behavior per TR35 - traditional falls back to native, finance and native fall back to default
165 if (!uprv_strcmp(buffer,gNative) || !uprv_strcmp(buffer,gFinance)) {
166 uprv_strcpy(buffer,gDefault);
167 } else if (!uprv_strcmp(buffer,gTraditional)) {
168 uprv_strcpy(buffer,gNative);
169 } else { // If we get here we couldn't find even the default numbering system
170 usingFallback = TRUE;
171 nsResolved = TRUE;
172 }
173 }
174 }
175 }
176
177 if (usingFallback) {
178 status = U_USING_FALLBACK_WARNING;
179 NumberingSystem *ns = new NumberingSystem();
180 if (ns == nullptr) {
181 status = U_MEMORY_ALLOCATION_ERROR;
182 }
183 return ns;
184 } else {
185 return NumberingSystem::createInstanceByName(buffer, status);
186 }
187 }
188
189 NumberingSystem* U_EXPORT2
createInstance(UErrorCode & status)190 NumberingSystem::createInstance(UErrorCode& status) {
191 return NumberingSystem::createInstance(Locale::getDefault(), status);
192 }
193
194 NumberingSystem* U_EXPORT2
createInstanceByName(const char * name,UErrorCode & status)195 NumberingSystem::createInstanceByName(const char *name, UErrorCode& status) {
196 int32_t radix = 10;
197 int32_t algorithmic = 0;
198
199 LocalUResourceBundlePointer numberingSystemsInfo(ures_openDirect(nullptr, gNumberingSystems, &status));
200 LocalUResourceBundlePointer nsCurrent(ures_getByKey(numberingSystemsInfo.getAlias(), gNumberingSystems, nullptr, &status));
201 LocalUResourceBundlePointer nsTop(ures_getByKey(nsCurrent.getAlias(), name, nullptr, &status));
202
203 UnicodeString nsd = ures_getUnicodeStringByKey(nsTop.getAlias(), gDesc, &status);
204
205 ures_getByKey(nsTop.getAlias(), gRadix, nsCurrent.getAlias(), &status);
206 radix = ures_getInt(nsCurrent.getAlias(), &status);
207
208 ures_getByKey(nsTop.getAlias(), gAlgorithmic, nsCurrent.getAlias(), &status);
209 algorithmic = ures_getInt(nsCurrent.getAlias(), &status);
210
211 UBool isAlgorithmic = ( algorithmic == 1 );
212
213 if (U_FAILURE(status)) {
214 // Don't stomp on the catastrophic failure of OOM.
215 if (status != U_MEMORY_ALLOCATION_ERROR) {
216 status = U_UNSUPPORTED_ERROR;
217 }
218 return nullptr;
219 }
220
221 LocalPointer<NumberingSystem> ns(NumberingSystem::createInstance(radix, isAlgorithmic, nsd, status), status);
222 if (U_FAILURE(status)) {
223 return nullptr;
224 }
225 ns->setName(name);
226 return ns.orphan();
227 }
228
229 /**
230 * Destructor.
231 * @draft ICU 4.2
232 */
~NumberingSystem()233 NumberingSystem::~NumberingSystem() {
234 }
235
getRadix() const236 int32_t NumberingSystem::getRadix() const {
237 return radix;
238 }
239
getDescription() const240 UnicodeString NumberingSystem::getDescription() const {
241 return desc;
242 }
243
getName() const244 const char * NumberingSystem::getName() const {
245 return name;
246 }
247
setRadix(int32_t r)248 void NumberingSystem::setRadix(int32_t r) {
249 radix = r;
250 }
251
setAlgorithmic(UBool c)252 void NumberingSystem::setAlgorithmic(UBool c) {
253 algorithmic = c;
254 }
255
setDesc(const UnicodeString & d)256 void NumberingSystem::setDesc(const UnicodeString &d) {
257 desc.setTo(d);
258 }
setName(const char * n)259 void NumberingSystem::setName(const char *n) {
260 if ( n == nullptr ) {
261 name[0] = (char) 0;
262 } else {
263 uprv_strncpy(name,n,kInternalNumSysNameCapacity);
264 name[kInternalNumSysNameCapacity] = '\0'; // Make sure it is null terminated.
265 }
266 }
isAlgorithmic() const267 UBool NumberingSystem::isAlgorithmic() const {
268 return ( algorithmic );
269 }
270
271 namespace {
272
273 UVector* gNumsysNames = nullptr;
274 UInitOnce gNumSysInitOnce = U_INITONCE_INITIALIZER;
275
numSysCleanup()276 U_CFUNC UBool U_CALLCONV numSysCleanup() {
277 delete gNumsysNames;
278 gNumsysNames = nullptr;
279 gNumSysInitOnce.reset();
280 return true;
281 }
282
initNumsysNames(UErrorCode & status)283 U_CFUNC void initNumsysNames(UErrorCode &status) {
284 U_ASSERT(gNumsysNames == nullptr);
285 ucln_i18n_registerCleanup(UCLN_I18N_NUMSYS, numSysCleanup);
286
287 // TODO: Simple array of UnicodeString objects, based on length of table resource?
288 LocalPointer<UVector> numsysNames(new UVector(uprv_deleteUObject, nullptr, status), status);
289 if (U_FAILURE(status)) {
290 return;
291 }
292
293 UErrorCode rbstatus = U_ZERO_ERROR;
294 UResourceBundle *numberingSystemsInfo = ures_openDirect(nullptr, "numberingSystems", &rbstatus);
295 numberingSystemsInfo =
296 ures_getByKey(numberingSystemsInfo, "numberingSystems", numberingSystemsInfo, &rbstatus);
297 if (U_FAILURE(rbstatus)) {
298 // Don't stomp on the catastrophic failure of OOM.
299 if (rbstatus == U_MEMORY_ALLOCATION_ERROR) {
300 status = rbstatus;
301 } else {
302 status = U_MISSING_RESOURCE_ERROR;
303 }
304 ures_close(numberingSystemsInfo);
305 return;
306 }
307
308 while ( ures_hasNext(numberingSystemsInfo) && U_SUCCESS(status) ) {
309 LocalUResourceBundlePointer nsCurrent(ures_getNextResource(numberingSystemsInfo, nullptr, &rbstatus));
310 if (rbstatus == U_MEMORY_ALLOCATION_ERROR) {
311 status = rbstatus; // we want to report OOM failure back to the caller.
312 break;
313 }
314 const char *nsName = ures_getKey(nsCurrent.getAlias());
315 LocalPointer<UnicodeString> newElem(new UnicodeString(nsName, -1, US_INV), status);
316 if (U_SUCCESS(status)) {
317 numsysNames->addElement(newElem.getAlias(), status);
318 if (U_SUCCESS(status)) {
319 newElem.orphan(); // on success, the numsysNames vector owns newElem.
320 }
321 }
322 }
323
324 ures_close(numberingSystemsInfo);
325 if (U_SUCCESS(status)) {
326 gNumsysNames = numsysNames.orphan();
327 }
328 return;
329 }
330
331 } // end anonymous namespace
332
getAvailableNames(UErrorCode & status)333 StringEnumeration* NumberingSystem::getAvailableNames(UErrorCode &status) {
334 umtx_initOnce(gNumSysInitOnce, &initNumsysNames, status);
335 LocalPointer<StringEnumeration> result(new NumsysNameEnumeration(status), status);
336 return result.orphan();
337 }
338
NumsysNameEnumeration(UErrorCode & status)339 NumsysNameEnumeration::NumsysNameEnumeration(UErrorCode& status) : pos(0) {
340 (void)status;
341 }
342
343 const UnicodeString*
snext(UErrorCode & status)344 NumsysNameEnumeration::snext(UErrorCode& status) {
345 if (U_SUCCESS(status) && (gNumsysNames != nullptr) && (pos < gNumsysNames->size())) {
346 return (const UnicodeString*)gNumsysNames->elementAt(pos++);
347 }
348 return nullptr;
349 }
350
351 void
reset(UErrorCode &)352 NumsysNameEnumeration::reset(UErrorCode& /*status*/) {
353 pos=0;
354 }
355
356 int32_t
count(UErrorCode &) const357 NumsysNameEnumeration::count(UErrorCode& /*status*/) const {
358 return (gNumsysNames==nullptr) ? 0 : gNumsysNames->size();
359 }
360
~NumsysNameEnumeration()361 NumsysNameEnumeration::~NumsysNameEnumeration() {
362 }
363 U_NAMESPACE_END
364
365 #endif /* #if !UCONFIG_NO_FORMATTING */
366
367 //eof
368