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/*
*******************************************************************************
* Copyright (C) 2010-2015, 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"
#include "numsys_impl.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 gNative[] = "native";
static const char gTraditional[] = "traditional";
static const char gFinance[] = "finance";
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)
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(NumsysNameEnumeration)
/**
* 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 ) {
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;
}
UBool nsResolved = TRUE;
UBool usingFallback = FALSE;
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.
if ( !uprv_strcmp(buffer,gDefault) || !uprv_strcmp(buffer,gNative) ||
!uprv_strcmp(buffer,gTraditional) || !uprv_strcmp(buffer,gFinance)) {
nsResolved = FALSE;
}
} else {
uprv_strcpy(buffer,gDefault);
nsResolved = FALSE;
}
if (!nsResolved) { // Resolve the numbering system ( default, native, traditional or finance ) into a "real" numbering system
UErrorCode localStatus = U_ZERO_ERROR;
UResourceBundle *resource = ures_open(NULL, inLocale.getName(), &localStatus);
UResourceBundle *numberElementsRes = ures_getByKey(resource,gNumberElements,NULL,&localStatus);
while (!nsResolved) {
localStatus = U_ZERO_ERROR;
count = 0;
const UChar *nsName = ures_getStringByKeyWithFallback(numberElementsRes, buffer, &count, &localStatus);
if ( count > 0 && count < ULOC_KEYWORDS_CAPACITY ) { // numbering system found
u_UCharsToChars(nsName,buffer,count);
buffer[count] = '\0'; // Make sure it is null terminated.
nsResolved = TRUE;
}
if (!nsResolved) { // Fallback behavior per TR35 - traditional falls back to native, finance and native fall back to default
if (!uprv_strcmp(buffer,gNative) || !uprv_strcmp(buffer,gFinance)) {
uprv_strcpy(buffer,gDefault);
} else if (!uprv_strcmp(buffer,gTraditional)) {
uprv_strcpy(buffer,gNative);
} else { // If we get here we couldn't find even the default numbering system
usingFallback = TRUE;
nsResolved = TRUE;
}
}
}
ures_close(numberElementsRes);
ures_close(resource);
}
if (usingFallback) {
status = U_USING_FALLBACK_WARNING;
NumberingSystem *ns = new NumberingSystem();
return ns;
} else {
return NumberingSystem::createInstanceByName(buffer,status);
}
}
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;
int32_t radix = 10;
int32_t algorithmic = 0;
numberingSystemsInfo = ures_openDirect(NULL,gNumberingSystems, &status);
nsCurrent = ures_getByKey(numberingSystemsInfo,gNumberingSystems,NULL,&status);
nsTop = ures_getByKey(nsCurrent,name,NULL,&status);
UnicodeString nsd = ures_getUnicodeStringByKey(nsTop,gDesc,&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 );
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() const {
return radix;
}
UnicodeString NumberingSystem::getDescription() const {
return desc;
}
const char * NumberingSystem::getName() const {
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 );
}
StringEnumeration* NumberingSystem::getAvailableNames(UErrorCode &status) {
// TODO(ticket #11908): Init-once static cache, with u_cleanup() callback.
static StringEnumeration* availableNames = NULL;
if (U_FAILURE(status)) {
return NULL;
}
if ( availableNames == NULL ) {
// TODO: Simple array of UnicodeString objects, based on length of table resource?
LocalPointer<UVector> numsysNames(new UVector(uprv_deleteUObject, NULL, status), status);
if (U_FAILURE(status)) {
return NULL;
}
UErrorCode rbstatus = U_ZERO_ERROR;
UResourceBundle *numberingSystemsInfo = ures_openDirect(NULL, "numberingSystems", &rbstatus);
numberingSystemsInfo = ures_getByKey(numberingSystemsInfo,"numberingSystems",numberingSystemsInfo,&rbstatus);
if(U_FAILURE(rbstatus)) {
status = U_MISSING_RESOURCE_ERROR;
ures_close(numberingSystemsInfo);
return NULL;
}
while ( ures_hasNext(numberingSystemsInfo) ) {
UResourceBundle *nsCurrent = ures_getNextResource(numberingSystemsInfo,NULL,&rbstatus);
const char *nsName = ures_getKey(nsCurrent);
numsysNames->addElement(new UnicodeString(nsName, -1, US_INV),status);
ures_close(nsCurrent);
}
ures_close(numberingSystemsInfo);
if (U_FAILURE(status)) {
return NULL;
}
availableNames = new NumsysNameEnumeration(numsysNames.getAlias(), status);
if (availableNames == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
numsysNames.orphan(); // The names got adopted.
}
return availableNames;
}
NumsysNameEnumeration::NumsysNameEnumeration(UVector *numsysNames, UErrorCode& /*status*/) {
pos=0;
fNumsysNames = numsysNames;
}
const UnicodeString*
NumsysNameEnumeration::snext(UErrorCode& status) {
if (U_SUCCESS(status) && pos < fNumsysNames->size()) {
return (const UnicodeString*)fNumsysNames->elementAt(pos++);
}
return NULL;
}
void
NumsysNameEnumeration::reset(UErrorCode& /*status*/) {
pos=0;
}
int32_t
NumsysNameEnumeration::count(UErrorCode& /*status*/) const {
return (fNumsysNames==NULL) ? 0 : fNumsysNames->size();
}
NumsysNameEnumeration::~NumsysNameEnumeration() {
delete fNumsysNames;
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
//eof