1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/numsys.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,331 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +* Copyright (C) 2010-2013, International Business Machines Corporation and
1.7 +* others. All Rights Reserved.
1.8 +*******************************************************************************
1.9 +*
1.10 +*
1.11 +* File NUMSYS.CPP
1.12 +*
1.13 +* Modification History:*
1.14 +* Date Name Description
1.15 +*
1.16 +********************************************************************************
1.17 +*/
1.18 +
1.19 +#include "unicode/utypes.h"
1.20 +#include "unicode/localpointer.h"
1.21 +#include "unicode/uchar.h"
1.22 +#include "unicode/unistr.h"
1.23 +#include "unicode/ures.h"
1.24 +#include "unicode/ustring.h"
1.25 +#include "unicode/uloc.h"
1.26 +#include "unicode/schriter.h"
1.27 +#include "unicode/numsys.h"
1.28 +#include "cstring.h"
1.29 +#include "uresimp.h"
1.30 +#include "numsys_impl.h"
1.31 +
1.32 +#if !UCONFIG_NO_FORMATTING
1.33 +
1.34 +U_NAMESPACE_BEGIN
1.35 +
1.36 +// Useful constants
1.37 +
1.38 +#define DEFAULT_DIGITS UNICODE_STRING_SIMPLE("0123456789");
1.39 +static const char gNumberingSystems[] = "numberingSystems";
1.40 +static const char gNumberElements[] = "NumberElements";
1.41 +static const char gDefault[] = "default";
1.42 +static const char gNative[] = "native";
1.43 +static const char gTraditional[] = "traditional";
1.44 +static const char gFinance[] = "finance";
1.45 +static const char gDesc[] = "desc";
1.46 +static const char gRadix[] = "radix";
1.47 +static const char gAlgorithmic[] = "algorithmic";
1.48 +static const char gLatn[] = "latn";
1.49 +
1.50 +
1.51 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumberingSystem)
1.52 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumsysNameEnumeration)
1.53 +
1.54 + /**
1.55 + * Default Constructor.
1.56 + *
1.57 + * @draft ICU 4.2
1.58 + */
1.59 +
1.60 +NumberingSystem::NumberingSystem() {
1.61 + radix = 10;
1.62 + algorithmic = FALSE;
1.63 + UnicodeString defaultDigits = DEFAULT_DIGITS;
1.64 + desc.setTo(defaultDigits);
1.65 + uprv_strcpy(name,gLatn);
1.66 +}
1.67 +
1.68 + /**
1.69 + * Copy constructor.
1.70 + * @draft ICU 4.2
1.71 + */
1.72 +
1.73 +NumberingSystem::NumberingSystem(const NumberingSystem& other)
1.74 +: UObject(other) {
1.75 + *this=other;
1.76 +}
1.77 +
1.78 +NumberingSystem* U_EXPORT2
1.79 +NumberingSystem::createInstance(int32_t radix_in, UBool isAlgorithmic_in, const UnicodeString & desc_in, UErrorCode &status) {
1.80 +
1.81 + if (U_FAILURE(status)) {
1.82 + return NULL;
1.83 + }
1.84 +
1.85 + if ( radix_in < 2 ) {
1.86 + status = U_ILLEGAL_ARGUMENT_ERROR;
1.87 + return NULL;
1.88 + }
1.89 +
1.90 + if ( !isAlgorithmic_in ) {
1.91 + if ( desc_in.countChar32() != radix_in || !isValidDigitString(desc_in)) {
1.92 + status = U_ILLEGAL_ARGUMENT_ERROR;
1.93 + return NULL;
1.94 + }
1.95 + }
1.96 +
1.97 + NumberingSystem *ns = new NumberingSystem();
1.98 +
1.99 + ns->setRadix(radix_in);
1.100 + ns->setDesc(desc_in);
1.101 + ns->setAlgorithmic(isAlgorithmic_in);
1.102 + ns->setName(NULL);
1.103 + return ns;
1.104 +
1.105 +}
1.106 +
1.107 +
1.108 +NumberingSystem* U_EXPORT2
1.109 +NumberingSystem::createInstance(const Locale & inLocale, UErrorCode& status) {
1.110 +
1.111 + if (U_FAILURE(status)) {
1.112 + return NULL;
1.113 + }
1.114 +
1.115 + UBool nsResolved = TRUE;
1.116 + UBool usingFallback = FALSE;
1.117 + char buffer[ULOC_KEYWORDS_CAPACITY];
1.118 + int32_t count = inLocale.getKeywordValue("numbers",buffer, sizeof(buffer),status);
1.119 + if ( count > 0 ) { // @numbers keyword was specified in the locale
1.120 + buffer[count] = '\0'; // Make sure it is null terminated.
1.121 + if ( !uprv_strcmp(buffer,gDefault) || !uprv_strcmp(buffer,gNative) ||
1.122 + !uprv_strcmp(buffer,gTraditional) || !uprv_strcmp(buffer,gFinance)) {
1.123 + nsResolved = FALSE;
1.124 + }
1.125 + } else {
1.126 + uprv_strcpy(buffer,gDefault);
1.127 + nsResolved = FALSE;
1.128 + }
1.129 +
1.130 + if (!nsResolved) { // Resolve the numbering system ( default, native, traditional or finance ) into a "real" numbering system
1.131 + UErrorCode localStatus = U_ZERO_ERROR;
1.132 + UResourceBundle *resource = ures_open(NULL, inLocale.getName(), &localStatus);
1.133 + UResourceBundle *numberElementsRes = ures_getByKey(resource,gNumberElements,NULL,&localStatus);
1.134 + while (!nsResolved) {
1.135 + localStatus = U_ZERO_ERROR;
1.136 + count = 0;
1.137 + const UChar *nsName = ures_getStringByKeyWithFallback(numberElementsRes, buffer, &count, &localStatus);
1.138 + if ( count > 0 && count < ULOC_KEYWORDS_CAPACITY ) { // numbering system found
1.139 + u_UCharsToChars(nsName,buffer,count);
1.140 + buffer[count] = '\0'; // Make sure it is null terminated.
1.141 + nsResolved = TRUE;
1.142 + }
1.143 +
1.144 + if (!nsResolved) { // Fallback behavior per TR35 - traditional falls back to native, finance and native fall back to default
1.145 + if (!uprv_strcmp(buffer,gNative) || !uprv_strcmp(buffer,gFinance)) {
1.146 + uprv_strcpy(buffer,gDefault);
1.147 + } else if (!uprv_strcmp(buffer,gTraditional)) {
1.148 + uprv_strcpy(buffer,gNative);
1.149 + } else { // If we get here we couldn't find even the default numbering system
1.150 + usingFallback = TRUE;
1.151 + nsResolved = TRUE;
1.152 + }
1.153 + }
1.154 + }
1.155 + ures_close(numberElementsRes);
1.156 + ures_close(resource);
1.157 + }
1.158 +
1.159 + if (usingFallback) {
1.160 + status = U_USING_FALLBACK_WARNING;
1.161 + NumberingSystem *ns = new NumberingSystem();
1.162 + return ns;
1.163 + } else {
1.164 + return NumberingSystem::createInstanceByName(buffer,status);
1.165 + }
1.166 + }
1.167 +
1.168 +NumberingSystem* U_EXPORT2
1.169 +NumberingSystem::createInstance(UErrorCode& status) {
1.170 + return NumberingSystem::createInstance(Locale::getDefault(), status);
1.171 +}
1.172 +
1.173 +NumberingSystem* U_EXPORT2
1.174 +NumberingSystem::createInstanceByName(const char *name, UErrorCode& status) {
1.175 + UResourceBundle *numberingSystemsInfo = NULL;
1.176 + UResourceBundle *nsTop, *nsCurrent;
1.177 + int32_t radix = 10;
1.178 + int32_t algorithmic = 0;
1.179 +
1.180 + numberingSystemsInfo = ures_openDirect(NULL,gNumberingSystems, &status);
1.181 + nsCurrent = ures_getByKey(numberingSystemsInfo,gNumberingSystems,NULL,&status);
1.182 + nsTop = ures_getByKey(nsCurrent,name,NULL,&status);
1.183 + UnicodeString nsd = ures_getUnicodeStringByKey(nsTop,gDesc,&status);
1.184 +
1.185 + ures_getByKey(nsTop,gRadix,nsCurrent,&status);
1.186 + radix = ures_getInt(nsCurrent,&status);
1.187 +
1.188 + ures_getByKey(nsTop,gAlgorithmic,nsCurrent,&status);
1.189 + algorithmic = ures_getInt(nsCurrent,&status);
1.190 +
1.191 + UBool isAlgorithmic = ( algorithmic == 1 );
1.192 +
1.193 + ures_close(nsCurrent);
1.194 + ures_close(nsTop);
1.195 + ures_close(numberingSystemsInfo);
1.196 +
1.197 + if (U_FAILURE(status)) {
1.198 + status = U_UNSUPPORTED_ERROR;
1.199 + return NULL;
1.200 + }
1.201 +
1.202 + NumberingSystem* ns = NumberingSystem::createInstance(radix,isAlgorithmic,nsd,status);
1.203 + ns->setName(name);
1.204 + return ns;
1.205 +}
1.206 +
1.207 + /**
1.208 + * Destructor.
1.209 + * @draft ICU 4.2
1.210 + */
1.211 +NumberingSystem::~NumberingSystem() {
1.212 +}
1.213 +
1.214 +int32_t NumberingSystem::getRadix() const {
1.215 + return radix;
1.216 +}
1.217 +
1.218 +UnicodeString NumberingSystem::getDescription() const {
1.219 + return desc;
1.220 +}
1.221 +
1.222 +const char * NumberingSystem::getName() const {
1.223 + return name;
1.224 +}
1.225 +
1.226 +void NumberingSystem::setRadix(int32_t r) {
1.227 + radix = r;
1.228 +}
1.229 +
1.230 +void NumberingSystem::setAlgorithmic(UBool c) {
1.231 + algorithmic = c;
1.232 +}
1.233 +
1.234 +void NumberingSystem::setDesc(UnicodeString d) {
1.235 + desc.setTo(d);
1.236 +}
1.237 +void NumberingSystem::setName(const char *n) {
1.238 + if ( n == NULL ) {
1.239 + name[0] = (char) 0;
1.240 + } else {
1.241 + uprv_strncpy(name,n,NUMSYS_NAME_CAPACITY);
1.242 + name[NUMSYS_NAME_CAPACITY] = (char)0; // Make sure it is null terminated.
1.243 + }
1.244 +}
1.245 +UBool NumberingSystem::isAlgorithmic() const {
1.246 + return ( algorithmic );
1.247 +}
1.248 +
1.249 +StringEnumeration* NumberingSystem::getAvailableNames(UErrorCode &status) {
1.250 +
1.251 + static StringEnumeration* availableNames = NULL;
1.252 +
1.253 + if (U_FAILURE(status)) {
1.254 + return NULL;
1.255 + }
1.256 +
1.257 + if ( availableNames == NULL ) {
1.258 + UVector *fNumsysNames = new UVector(uprv_deleteUObject, NULL, status);
1.259 + if (U_FAILURE(status)) {
1.260 + status = U_MEMORY_ALLOCATION_ERROR;
1.261 + return NULL;
1.262 + }
1.263 +
1.264 + UErrorCode rbstatus = U_ZERO_ERROR;
1.265 + UResourceBundle *numberingSystemsInfo = ures_openDirect(NULL, "numberingSystems", &rbstatus);
1.266 + numberingSystemsInfo = ures_getByKey(numberingSystemsInfo,"numberingSystems",numberingSystemsInfo,&rbstatus);
1.267 + if(U_FAILURE(rbstatus)) {
1.268 + status = U_MISSING_RESOURCE_ERROR;
1.269 + ures_close(numberingSystemsInfo);
1.270 + return NULL;
1.271 + }
1.272 +
1.273 + while ( ures_hasNext(numberingSystemsInfo) ) {
1.274 + UResourceBundle *nsCurrent = ures_getNextResource(numberingSystemsInfo,NULL,&rbstatus);
1.275 + const char *nsName = ures_getKey(nsCurrent);
1.276 + fNumsysNames->addElement(new UnicodeString(nsName, -1, US_INV),status);
1.277 + ures_close(nsCurrent);
1.278 + }
1.279 +
1.280 + ures_close(numberingSystemsInfo);
1.281 + availableNames = new NumsysNameEnumeration(fNumsysNames,status);
1.282 +
1.283 + }
1.284 +
1.285 + return availableNames;
1.286 +}
1.287 +
1.288 +UBool NumberingSystem::isValidDigitString(const UnicodeString& str) {
1.289 +
1.290 + StringCharacterIterator it(str);
1.291 + UChar32 c;
1.292 + int32_t i = 0;
1.293 +
1.294 + for ( it.setToStart(); it.hasNext(); ) {
1.295 + c = it.next32PostInc();
1.296 + if ( c > 0xFFFF ) { // Digits outside the BMP are not currently supported
1.297 + return FALSE;
1.298 + }
1.299 + i++;
1.300 + }
1.301 + return TRUE;
1.302 +}
1.303 +
1.304 +NumsysNameEnumeration::NumsysNameEnumeration(UVector *fNameList, UErrorCode& /*status*/) {
1.305 + pos=0;
1.306 + fNumsysNames = fNameList;
1.307 +}
1.308 +
1.309 +const UnicodeString*
1.310 +NumsysNameEnumeration::snext(UErrorCode& status) {
1.311 + if (U_SUCCESS(status) && pos < fNumsysNames->size()) {
1.312 + return (const UnicodeString*)fNumsysNames->elementAt(pos++);
1.313 + }
1.314 + return NULL;
1.315 +}
1.316 +
1.317 +void
1.318 +NumsysNameEnumeration::reset(UErrorCode& /*status*/) {
1.319 + pos=0;
1.320 +}
1.321 +
1.322 +int32_t
1.323 +NumsysNameEnumeration::count(UErrorCode& /*status*/) const {
1.324 + return (fNumsysNames==NULL) ? 0 : fNumsysNames->size();
1.325 +}
1.326 +
1.327 +NumsysNameEnumeration::~NumsysNameEnumeration() {
1.328 + delete fNumsysNames;
1.329 +}
1.330 +U_NAMESPACE_END
1.331 +
1.332 +#endif /* #if !UCONFIG_NO_FORMATTING */
1.333 +
1.334 +//eof
