Check in the pristine copy of ICU 4.6...

icu46/source/i18n/numsys.cpp

+/*
+*******************************************************************************
+* Copyright (C) 2010, 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 "cstring.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 gNumberElements[] = "NumberElements";
+static const char gDefault[] = "default";
+static const char gDesc[] = "desc";
+static const char gRadix[] = "radix";
+static const char gAlgorithmic[] = "algorithmic";
+static const char gLatn[] = "latn";
+
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumberingSystem)
+
+    /**
+     * Default Constructor.
+     *
+     * @draft ICU 4.2
+     */
+
+NumberingSystem::NumberingSystem() {
+     radix = 10;
+     algorithmic = FALSE;
+     UnicodeString defaultDigits = DEFAULT_DIGITS;
+     desc.setTo(defaultDigits);
+     uprv_strcpy(name,gLatn);
+}
+
+    /**
+     * 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 (U_FAILURE(status)) {
+        return NULL;
+    }
+
+    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);
+    ns->setName(NULL);
+    return ns;
+    
+}
+
+
+NumberingSystem* U_EXPORT2
+NumberingSystem::createInstance(const Locale & inLocale, UErrorCode& status) {
+
+    if (U_FAILURE(status)) {
+        return NULL;
+    } 
+
+    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.
+        UResourceBundle *resource = ures_open(NULL, inLocale.getName(), &status);
+        UResourceBundle *numberElementsRes = ures_getByKey(resource,gNumberElements,NULL,&status);
+        const UChar *defaultNSName =
+            ures_getStringByKeyWithFallback(numberElementsRes, gDefault, &count, &status);
+        ures_close(numberElementsRes);
+        ures_close(resource);
+
+        if (U_FAILURE(status)) {
+            status = U_USING_FALLBACK_WARNING;
+            NumberingSystem *ns = new NumberingSystem();
+            return ns;
+        } 
+
+        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;
+     }
+
+     NumberingSystem* ns = NumberingSystem::createInstance(radix,isAlgorithmic,nsd,status);
+     ns->setName(name);
+     return ns;
+}
+
+    /**
+     * Destructor.
+     * @draft ICU 4.2
+     */
+NumberingSystem::~NumberingSystem() {
+}
+
+int32_t NumberingSystem::getRadix() {
+    return radix;
+}
+
+UnicodeString NumberingSystem::getDescription() {
+    return desc;
+}
+
+const char * NumberingSystem::getName() {
+    return name;
+}
+
+void NumberingSystem::setRadix(int32_t r) {
+    radix = r;
+}
+
+void NumberingSystem::setAlgorithmic(UBool c) {
+    algorithmic = c;
+}
+
+void NumberingSystem::setDesc(UnicodeString d) {
+    desc.setTo(d);
+}
+void NumberingSystem::setName(const char *n) {
+    if ( n == NULL ) {
+        name[0] = (char) 0;
+    } else {
+        uprv_strncpy(name,n,NUMSYS_NAME_CAPACITY);
+        name[NUMSYS_NAME_CAPACITY] = (char)0; // Make sure it is null terminated.
+    }
+}
+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 ( 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