| /* |
| ******************************************************************************* |
| * Copyright (C) 2009, International Business Machines Corporation and |
| * others. All Rights Reserved. |
| ******************************************************************************* |
| * |
| * |
| * File NUMSYS.CPP |
| * |
| * Modification History:* |
| * Date Name Description |
| * |
| ******************************************************************************** |
| */ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/localpointer.h" |
| #include "unicode/uchar.h" |
| #include "unicode/unistr.h" |
| #include "unicode/ures.h" |
| #include "unicode/ustring.h" |
| #include "unicode/uloc.h" |
| #include "unicode/schriter.h" |
| #include "unicode/numsys.h" |
| |
| #include "uresimp.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| U_NAMESPACE_BEGIN |
| |
| // Useful constants |
| |
| #define DEFAULT_DIGITS UNICODE_STRING_SIMPLE("0123456789"); |
| static const char gNumberingSystems[] = "numberingSystems"; |
| static const char gDefaultNumberingSystem[] = "defaultNumberingSystem"; |
| static const char gDesc[] = "desc"; |
| static const char gRadix[] = "radix"; |
| static const char gAlgorithmic[] = "algorithmic"; |
| |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumberingSystem) |
| |
| /** |
| * Default Constructor. |
| * |
| * @draft ICU 4.2 |
| */ |
| |
| NumberingSystem::NumberingSystem() { |
| radix = 10; |
| algorithmic = FALSE; |
| UnicodeString defaultDigits = DEFAULT_DIGITS; |
| desc.setTo(defaultDigits); |
| } |
| |
| /** |
| * Copy constructor. |
| * @draft ICU 4.2 |
| */ |
| |
| NumberingSystem::NumberingSystem(const NumberingSystem& other) |
| : UObject(other) { |
| *this=other; |
| } |
| |
| NumberingSystem* U_EXPORT2 |
| NumberingSystem::createInstance(int32_t radix_in, UBool isAlgorithmic_in, const UnicodeString & desc_in, UErrorCode &status) { |
| |
| if ( radix_in < 2 ) { |
| status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| |
| if ( !isAlgorithmic_in ) { |
| if ( desc_in.countChar32() != radix_in || !isValidDigitString(desc_in)) { |
| status = U_ILLEGAL_ARGUMENT_ERROR; |
| return NULL; |
| } |
| } |
| |
| NumberingSystem *ns = new NumberingSystem(); |
| |
| ns->setRadix(radix_in); |
| ns->setDesc(desc_in); |
| ns->setAlgorithmic(isAlgorithmic_in); |
| return ns; |
| |
| } |
| |
| |
| NumberingSystem* U_EXPORT2 |
| NumberingSystem::createInstance(const Locale & inLocale, UErrorCode& status) { |
| |
| char buffer[ULOC_KEYWORDS_CAPACITY]; |
| int32_t count = inLocale.getKeywordValue("numbers",buffer, sizeof(buffer),status); |
| if ( count > 0 ) { // @numbers keyword was specified in the locale |
| buffer[count] = '\0'; // Make sure it is null terminated. |
| return NumberingSystem::createInstanceByName(buffer,status); |
| } else { // Find the default numbering system for this locale. |
| LocalUResourceBundlePointer resource(ures_open(NULL, inLocale.getName(), &status)); |
| if (U_FAILURE(status)) { |
| status = U_USING_FALLBACK_WARNING; |
| NumberingSystem *ns = new NumberingSystem(); |
| return ns; |
| } |
| const UChar *defaultNSName = |
| ures_getStringByKeyWithFallback(resource.getAlias(), gDefaultNumberingSystem, &count, &status); |
| if ( count > 0 && count < ULOC_KEYWORDS_CAPACITY ) { // Default numbering system found |
| u_UCharsToChars(defaultNSName,buffer,count); |
| buffer[count] = '\0'; // Make sure it is null terminated. |
| return NumberingSystem::createInstanceByName(buffer,status); |
| } else { |
| status = U_USING_FALLBACK_WARNING; |
| NumberingSystem *ns = new NumberingSystem(); |
| return ns; |
| } |
| |
| } |
| } |
| |
| NumberingSystem* U_EXPORT2 |
| NumberingSystem::createInstance(UErrorCode& status) { |
| return NumberingSystem::createInstance(Locale::getDefault(), status); |
| } |
| |
| NumberingSystem* U_EXPORT2 |
| NumberingSystem::createInstanceByName(const char *name, UErrorCode& status) { |
| |
| UResourceBundle *numberingSystemsInfo = NULL; |
| UResourceBundle *nsTop, *nsCurrent; |
| const UChar* description = NULL; |
| int32_t radix = 10; |
| int32_t algorithmic = 0; |
| int32_t len; |
| |
| numberingSystemsInfo = ures_openDirect(NULL,gNumberingSystems, &status); |
| nsCurrent = ures_getByKey(numberingSystemsInfo,gNumberingSystems,NULL,&status); |
| nsTop = ures_getByKey(nsCurrent,name,NULL,&status); |
| description = ures_getStringByKey(nsTop,gDesc,&len,&status); |
| |
| ures_getByKey(nsTop,gRadix,nsCurrent,&status); |
| radix = ures_getInt(nsCurrent,&status); |
| |
| ures_getByKey(nsTop,gAlgorithmic,nsCurrent,&status); |
| algorithmic = ures_getInt(nsCurrent,&status); |
| |
| UBool isAlgorithmic = ( algorithmic == 1 ); |
| UnicodeString nsd; |
| nsd.setTo(description); |
| |
| ures_close(nsCurrent); |
| ures_close(nsTop); |
| ures_close(numberingSystemsInfo); |
| |
| if (U_FAILURE(status)) { |
| status = U_UNSUPPORTED_ERROR; |
| return NULL; |
| } |
| |
| return NumberingSystem::createInstance(radix,isAlgorithmic,nsd,status); |
| |
| } |
| |
| /** |
| * Destructor. |
| * @draft ICU 4.2 |
| */ |
| NumberingSystem::~NumberingSystem() { |
| } |
| |
| int32_t NumberingSystem::getRadix() { |
| return radix; |
| } |
| |
| UnicodeString NumberingSystem::getDescription() { |
| return desc; |
| } |
| |
| void NumberingSystem::setRadix(int32_t r) { |
| radix = r; |
| } |
| |
| void NumberingSystem::setAlgorithmic(UBool c) { |
| algorithmic = c; |
| } |
| |
| void NumberingSystem::setDesc(UnicodeString d) { |
| desc.setTo(d); |
| } |
| |
| UBool NumberingSystem::isAlgorithmic() const { |
| return ( algorithmic ); |
| } |
| |
| |
| UBool NumberingSystem::isValidDigitString(const UnicodeString& str) { |
| |
| StringCharacterIterator it(str); |
| UChar32 c; |
| UChar32 prev = 0; |
| int32_t i = 0; |
| |
| for ( it.setToStart(); it.hasNext(); ) { |
| c = it.next32PostInc(); |
| if ( u_charDigitValue(c) != i ) { // Digits outside the Unicode decimal digit class are not currently supported |
| return FALSE; |
| } |
| if ( prev != 0 && c != prev + 1 ) { // Non-contiguous digits are not currently supported |
| return FALSE; |
| } |
| if ( c > 0xFFFF ) { // Digits outside the BMP are not currently supported |
| return FALSE; |
| } |
| i++; |
| prev = c; |
| } |
| return TRUE; |
| } |
| U_NAMESPACE_END |
| |
| #endif /* #if !UCONFIG_NO_FORMATTING */ |
| |
| //eof |