icu4c/source/i18n/winnmfmt.cpp - external/github.com/unicode-org/icu - Git at Google

 // © 2016 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 /*
 ********************************************************************************
 *   Copyright (C) 2005-2016, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 ********************************************************************************
 *
 * File WINNMFMT.CPP
 *
 ********************************************************************************
 */

 #include "unicode/utypes.h"

 #if U_PLATFORM_USES_ONLY_WIN32_API

 #if !UCONFIG_NO_FORMATTING

 #include "winnmfmt.h"

 #include "unicode/format.h"
 #include "unicode/numfmt.h"
 #include "unicode/locid.h"
 #include "unicode/ustring.h"

 #include "cmemory.h"
 #include "uassert.h"
 #include "locmap.h"

 #ifndef WIN32_LEAN_AND_MEAN
 #   define WIN32_LEAN_AND_MEAN
 #endif
 #   define VC_EXTRALEAN
 #   define NOUSER
 #   define NOSERVICE
 #   define NOIME
 #   define NOMCX
 #include <windows.h>
 #include <stdio.h>

 U_NAMESPACE_BEGIN

 union FormatInfo
 {
     NUMBERFMTW   number;
     CURRENCYFMTW currency;
 };

 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Win32NumberFormat)

 #define NEW_ARRAY(type,count) (type *) uprv_malloc((count) * sizeof(type))
 #define DELETE_ARRAY(array) uprv_free((void *) (array))

 #define STACK_BUFFER_SIZE 32

 /*
  * Turns a string of the form "3;2;0" into the grouping UINT
  * needed for NUMBERFMT and CURRENCYFMT. If the string does not
  * end in ";0" then the return value should be multiplied by 10.
  * (e.g. "3" => 30, "3;2" => 320)
  */
 static UINT getGrouping(const wchar_t *grouping)
 {
     UINT g = 0;
     const wchar_t *s;

     for (s = grouping; *s != L'\0'; s += 1) {
         if (*s > L'0' && *s < L'9') {
             g = g * 10 + (*s - L'0');
         } else if (*s != L';') {
             break;
         }
     }

     if (*s != L'0') {
         g *= 10;
     }

     return g;
 }

 static void getNumberFormat(NUMBERFMTW *fmt, const wchar_t *windowsLocaleName)
 {
     wchar_t buf[10];

     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_IDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_ILZERO,  (LPWSTR) &fmt->LeadingZero, sizeof(UINT));

     GetLocaleInfoEx(windowsLocaleName, LOCALE_SGROUPING, (LPWSTR)buf, 10);
     fmt->Grouping = getGrouping(buf);

     fmt->lpDecimalSep = NEW_ARRAY(wchar_t, 6);
     GetLocaleInfoEx(windowsLocaleName, LOCALE_SDECIMAL,  fmt->lpDecimalSep,  6);

     fmt->lpThousandSep = NEW_ARRAY(wchar_t, 6);
     GetLocaleInfoEx(windowsLocaleName, LOCALE_STHOUSAND, fmt->lpThousandSep, 6);

     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_INEGNUMBER, (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
 }

 static void freeNumberFormat(NUMBERFMTW *fmt)
 {
     if (fmt != NULL) {
         DELETE_ARRAY(fmt->lpThousandSep);
         DELETE_ARRAY(fmt->lpDecimalSep);
     }
 }

 static void getCurrencyFormat(CURRENCYFMTW *fmt, const wchar_t *windowsLocaleName)
 {
     wchar_t buf[10];

     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_ICURRDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));

     GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONGROUPING, (LPWSTR)buf, sizeof(buf));
     fmt->Grouping = getGrouping(buf);

     fmt->lpDecimalSep = NEW_ARRAY(wchar_t, 6);
     GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONDECIMALSEP,  fmt->lpDecimalSep,  6);

     fmt->lpThousandSep = NEW_ARRAY(wchar_t, 6);
     GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONTHOUSANDSEP, fmt->lpThousandSep, 6);

     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_INEGCURR,  (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
     GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER|LOCALE_ICURRENCY, (LPWSTR) &fmt->PositiveOrder, sizeof(UINT));

     fmt->lpCurrencySymbol = NEW_ARRAY(wchar_t, 8);
     GetLocaleInfoEx(windowsLocaleName, LOCALE_SCURRENCY, (LPWSTR) fmt->lpCurrencySymbol, 8);
 }

 static void freeCurrencyFormat(CURRENCYFMTW *fmt)
 {
     if (fmt != NULL) {
         DELETE_ARRAY(fmt->lpCurrencySymbol);
         DELETE_ARRAY(fmt->lpThousandSep);
         DELETE_ARRAY(fmt->lpDecimalSep);
     }
 }

 // TODO: This is copied in both winnmfmt.cpp and windtfmt.cpp, but really should
 // be factored out into a common helper for both.
 static UErrorCode GetEquivalentWindowsLocaleName(const Locale& locale, UnicodeString** buffer)
 {
     UErrorCode status = U_ZERO_ERROR;
     char asciiBCP47Tag[LOCALE_NAME_MAX_LENGTH] = {};

     // Convert from names like "en_CA" and "de_DE@collation=phonebook" to "en-CA" and "de-DE-u-co-phonebk".
     (void) uloc_toLanguageTag(locale.getName(), asciiBCP47Tag, UPRV_LENGTHOF(asciiBCP47Tag), FALSE, &status);

     if (U_SUCCESS(status))
     {
         // Need it to be UTF-16, not 8-bit
         // TODO: This seems like a good thing for a helper
         wchar_t bcp47Tag[LOCALE_NAME_MAX_LENGTH] = {};
         int32_t i;
         for (i = 0; i < UPRV_LENGTHOF(bcp47Tag); i++)
         {
             if (asciiBCP47Tag[i] == '\0')
             {
                 break;
             }
             else
             {
                 // normally just copy the character
                 bcp47Tag[i] = static_cast<wchar_t>(asciiBCP47Tag[i]);
             }
         }

         // Ensure it's null terminated
         if (i < (UPRV_LENGTHOF(bcp47Tag) - 1))
         {
             bcp47Tag[i] = L'\0';
         }
         else
         {
             // Ran out of room.
             bcp47Tag[UPRV_LENGTHOF(bcp47Tag) - 1] = L'\0';
         }


         wchar_t windowsLocaleName[LOCALE_NAME_MAX_LENGTH] = {};

         // Note: On Windows versions below 10, there is no support for locale name aliases.
         // This means that it will fail for locales where ICU has a completely different
         // name (like ku vs ckb), and it will also not work for alternate sort locale
         // names like "de-DE-u-co-phonebk".

         // TODO: We could add some sort of exception table for cases like ku vs ckb.

         int length = ResolveLocaleName(bcp47Tag, windowsLocaleName, UPRV_LENGTHOF(windowsLocaleName));

         if (length > 0)
         {
             *buffer = new UnicodeString(windowsLocaleName);
         }
         else
         {
             status = U_UNSUPPORTED_ERROR;
         }
     }
     return status;
 }

 Win32NumberFormat::Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status)
   : NumberFormat(), fCurrency(currency), fFormatInfo(NULL), fFractionDigitsSet(FALSE), fWindowsLocaleName(nullptr)
 {
     if (!U_FAILURE(status)) {
         fLCID = locale.getLCID();

         GetEquivalentWindowsLocaleName(locale, &fWindowsLocaleName);
         // Note: In the previous code, it would look up the LCID for the locale, and if
         // the locale was not recognized then it would get an LCID of 0, which is a
         // synonym for LOCALE_USER_DEFAULT on Windows.
         // If the above method fails, then fWindowsLocaleName will remain as nullptr, and
         // then we will pass nullptr to API GetLocaleInfoEx, which is the same as passing
         // LOCALE_USER_DEFAULT.

         // Resolve actual locale to be used later
         UErrorCode tmpsts = U_ZERO_ERROR;
         char tmpLocID[ULOC_FULLNAME_CAPACITY];
         int32_t len = uloc_getLocaleForLCID(fLCID, tmpLocID, UPRV_LENGTHOF(tmpLocID) - 1, &tmpsts);
         if (U_SUCCESS(tmpsts)) {
             tmpLocID[len] = 0;
             fLocale = Locale((const char*)tmpLocID);
         }

         const wchar_t *localeName = nullptr;

         if (fWindowsLocaleName != nullptr)
         {
             localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
         }

         fFormatInfo = (FormatInfo*)uprv_malloc(sizeof(FormatInfo));

         if (fCurrency) {
             getCurrencyFormat(&fFormatInfo->currency, localeName);
         } else {
             getNumberFormat(&fFormatInfo->number, localeName);
         }
     }
 }

 Win32NumberFormat::Win32NumberFormat(const Win32NumberFormat &other)
   : NumberFormat(other), fFormatInfo((FormatInfo*)uprv_malloc(sizeof(FormatInfo)))
 {
     if (fFormatInfo != NULL) {
         uprv_memset(fFormatInfo, 0, sizeof(*fFormatInfo));
     }
     *this = other;
 }

 Win32NumberFormat::~Win32NumberFormat()
 {
     if (fFormatInfo != NULL) {
         if (fCurrency) {
             freeCurrencyFormat(&fFormatInfo->currency);
         } else {
             freeNumberFormat(&fFormatInfo->number);
         }

         uprv_free(fFormatInfo);
     }
     delete fWindowsLocaleName;
 }

 Win32NumberFormat &Win32NumberFormat::operator=(const Win32NumberFormat &other)
 {
     NumberFormat::operator=(other);

     this->fCurrency          = other.fCurrency;
     this->fLocale            = other.fLocale;
     this->fLCID              = other.fLCID;
     this->fFractionDigitsSet = other.fFractionDigitsSet;
     this->fWindowsLocaleName = other.fWindowsLocaleName == NULL ? NULL : new UnicodeString(*other.fWindowsLocaleName);

     const wchar_t *localeName = nullptr;

     if (fWindowsLocaleName != nullptr)
     {
         localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
     }

     if (fCurrency) {
         freeCurrencyFormat(&fFormatInfo->currency);
         getCurrencyFormat(&fFormatInfo->currency, localeName);
     } else {
         freeNumberFormat(&fFormatInfo->number);
         getNumberFormat(&fFormatInfo->number, localeName);
     }

     return *this;
 }

 Win32NumberFormat *Win32NumberFormat::clone() const
 {
     return new Win32NumberFormat(*this);
 }

 UnicodeString& Win32NumberFormat::format(double number, UnicodeString& appendTo, FieldPosition& /* pos */) const
 {
     return format(getMaximumFractionDigits(), appendTo, L"%.16f", number);
 }

 UnicodeString& Win32NumberFormat::format(int32_t number, UnicodeString& appendTo, FieldPosition& /* pos */) const
 {
     return format(getMinimumFractionDigits(), appendTo, L"%I32d", number);
 }

 UnicodeString& Win32NumberFormat::format(int64_t number, UnicodeString& appendTo, FieldPosition& /* pos */) const
 {
     return format(getMinimumFractionDigits(), appendTo, L"%I64d", number);
 }

 void Win32NumberFormat::parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const
 {
     UErrorCode status = U_ZERO_ERROR;
     NumberFormat *nf = fCurrency? NumberFormat::createCurrencyInstance(fLocale, status) : NumberFormat::createInstance(fLocale, status);

     nf->parse(text, result, parsePosition);
     delete nf;
 }
 void Win32NumberFormat::setMaximumFractionDigits(int32_t newValue)
 {
     fFractionDigitsSet = TRUE;
     NumberFormat::setMaximumFractionDigits(newValue);
 }

 void Win32NumberFormat::setMinimumFractionDigits(int32_t newValue)
 {
     fFractionDigitsSet = TRUE;
     NumberFormat::setMinimumFractionDigits(newValue);
 }

 UnicodeString &Win32NumberFormat::format(int32_t numDigits, UnicodeString &appendTo, const wchar_t *fmt, ...) const
 {
     wchar_t nStackBuffer[STACK_BUFFER_SIZE];
     wchar_t *nBuffer = nStackBuffer;
     va_list args;
     int result;

     nBuffer[0] = 0x0000;

     /* Due to the arguments causing a result to be <= 23 characters (+2 for NULL and minus),
     we don't need to reallocate the buffer. */
     va_start(args, fmt);
     result = _vsnwprintf(nBuffer, STACK_BUFFER_SIZE, fmt, args);
     va_end(args);

     /* Just to make sure of the above statement, we add this assert */
     U_ASSERT(result >=0);
     // The following code is not used because _vscwprintf isn't available on MinGW at the moment.
     /*if (result < 0) {
         int newLength;

         va_start(args, fmt);
         newLength = _vscwprintf(fmt, args);
         va_end(args);

         nBuffer = NEW_ARRAY(UChar, newLength + 1);

         va_start(args, fmt);
         result = _vsnwprintf(nBuffer, newLength + 1, fmt, args);
         va_end(args);
     }*/

     // vswprintf is sensitive to the locale set by setlocale. For some locales
     // it doesn't use "." as the decimal separator, which is what GetNumberFormatW
     // and GetCurrencyFormatW both expect to see.
     //
     // To fix this, we scan over the string and replace the first non-digits, except
     // for a leading "-", with a "."
     //
     // Note: (nBuffer[0] == L'-') will evaluate to 1 if there is a leading '-' in the
     // number, and 0 otherwise.
     for (wchar_t *p = &nBuffer[nBuffer[0] == L'-']; *p != L'\0'; p += 1) {
         if (*p < L'0' || *p > L'9') {
             *p = L'.';
             break;
         }
     }

     wchar_t stackBuffer[STACK_BUFFER_SIZE];
     wchar_t *buffer = stackBuffer;
     FormatInfo formatInfo;

     formatInfo = *fFormatInfo;
     buffer[0] = 0x0000;

     const wchar_t *localeName = nullptr;

     if (fWindowsLocaleName != nullptr)
     {
         localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
     }

     if (fCurrency) {
         if (fFractionDigitsSet) {
             formatInfo.currency.NumDigits = (UINT) numDigits;
         }

         if (!isGroupingUsed()) {
             formatInfo.currency.Grouping = 0;
         }

         result = GetCurrencyFormatEx(localeName, 0, nBuffer, &formatInfo.currency, buffer, STACK_BUFFER_SIZE);

         if (result == 0) {
             DWORD lastError = GetLastError();

             if (lastError == ERROR_INSUFFICIENT_BUFFER) {
                 int newLength = GetCurrencyFormatEx(localeName, 0, nBuffer, &formatInfo.currency, NULL, 0);

                 buffer = NEW_ARRAY(wchar_t, newLength);
                 buffer[0] = 0x0000;
                 GetCurrencyFormatEx(localeName, 0, nBuffer,  &formatInfo.currency, buffer, newLength);
             }
         }
     } else {
         if (fFractionDigitsSet) {
             formatInfo.number.NumDigits = (UINT) numDigits;
         }

         if (!isGroupingUsed()) {
             formatInfo.number.Grouping = 0;
         }

         result = GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, buffer, STACK_BUFFER_SIZE);

         if (result == 0) {
             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
                 int newLength = GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, NULL, 0);

                 buffer = NEW_ARRAY(wchar_t, newLength);
                 buffer[0] = 0x0000;
                 GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, buffer, newLength);
             }
         }
     }

     appendTo.append((UChar *)buffer, (int32_t) wcslen(buffer));

     if (buffer != stackBuffer) {
         DELETE_ARRAY(buffer);
     }

     /*if (nBuffer != nStackBuffer) {
         DELETE_ARRAY(nBuffer);
     }*/

     return appendTo;
 }

 U_NAMESPACE_END

 #endif /* #if !UCONFIG_NO_FORMATTING */

 #endif // U_PLATFORM_USES_ONLY_WIN32_API
	// © 2016 and later: Unicode, Inc. and others.
	// License & terms of use: http://www.unicode.org/copyright.html
	/*
	********************************************************************************
	* Copyright (C) 2005-2016, International Business Machines
	* Corporation and others. All Rights Reserved.
	********************************************************************************
	*
	* File WINNMFMT.CPP
	*
	********************************************************************************
	*/

	#include "unicode/utypes.h"

	#if U_PLATFORM_USES_ONLY_WIN32_API

	#if !UCONFIG_NO_FORMATTING

	#include "winnmfmt.h"

	#include "unicode/format.h"
	#include "unicode/numfmt.h"
	#include "unicode/locid.h"
	#include "unicode/ustring.h"

	#include "cmemory.h"
	#include "uassert.h"
	#include "locmap.h"

	#ifndef WIN32_LEAN_AND_MEAN
	# define WIN32_LEAN_AND_MEAN
	#endif
	# define VC_EXTRALEAN
	# define NOUSER
	# define NOSERVICE
	# define NOIME
	# define NOMCX
	#include <windows.h>
	#include <stdio.h>

	U_NAMESPACE_BEGIN

	union FormatInfo
	{
	NUMBERFMTW number;
	CURRENCYFMTW currency;
	};

	UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Win32NumberFormat)

	#define NEW_ARRAY(type,count) (type ) uprv_malloc((count) sizeof(type))
	#define DELETE_ARRAY(array) uprv_free((void *) (array))

	#define STACK_BUFFER_SIZE 32

	/*
	* Turns a string of the form "3;2;0" into the grouping UINT
	* needed for NUMBERFMT and CURRENCYFMT. If the string does not
	* end in ";0" then the return value should be multiplied by 10.
	* (e.g. "3" => 30, "3;2" => 320)
	*/
	static UINT getGrouping(const wchar_t *grouping)
	{
	UINT g = 0;
	const wchar_t *s;

	for (s = grouping; *s != L'\0'; s += 1) {
	if (s > L'0' && s < L'9') {
	g = g * 10 + (*s - L'0');
	} else if (*s != L';') {
	break;
	}
	}

	if (*s != L'0') {
	g *= 10;
	}

	return g;
	}

	static void getNumberFormat(NUMBERFMTW fmt, const wchar_t windowsLocaleName)
	{
	wchar_t buf[10];

	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_IDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));

	GetLocaleInfoEx(windowsLocaleName, LOCALE_SGROUPING, (LPWSTR)buf, 10);
	fmt->Grouping = getGrouping(buf);

	fmt->lpDecimalSep = NEW_ARRAY(wchar_t, 6);
	GetLocaleInfoEx(windowsLocaleName, LOCALE_SDECIMAL, fmt->lpDecimalSep, 6);

	fmt->lpThousandSep = NEW_ARRAY(wchar_t, 6);
	GetLocaleInfoEx(windowsLocaleName, LOCALE_STHOUSAND, fmt->lpThousandSep, 6);

	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_INEGNUMBER, (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
	}

	static void freeNumberFormat(NUMBERFMTW *fmt)
	{
	if (fmt != NULL) {
	DELETE_ARRAY(fmt->lpThousandSep);
	DELETE_ARRAY(fmt->lpDecimalSep);
	}
	}

	static void getCurrencyFormat(CURRENCYFMTW fmt, const wchar_t windowsLocaleName)
	{
	wchar_t buf[10];

	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_ICURRDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));

	GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONGROUPING, (LPWSTR)buf, sizeof(buf));
	fmt->Grouping = getGrouping(buf);

	fmt->lpDecimalSep = NEW_ARRAY(wchar_t, 6);
	GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONDECIMALSEP, fmt->lpDecimalSep, 6);

	fmt->lpThousandSep = NEW_ARRAY(wchar_t, 6);
	GetLocaleInfoEx(windowsLocaleName, LOCALE_SMONTHOUSANDSEP, fmt->lpThousandSep, 6);

	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_INEGCURR, (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
	GetLocaleInfoEx(windowsLocaleName, LOCALE_RETURN_NUMBER\|LOCALE_ICURRENCY, (LPWSTR) &fmt->PositiveOrder, sizeof(UINT));

	fmt->lpCurrencySymbol = NEW_ARRAY(wchar_t, 8);
	GetLocaleInfoEx(windowsLocaleName, LOCALE_SCURRENCY, (LPWSTR) fmt->lpCurrencySymbol, 8);
	}

	static void freeCurrencyFormat(CURRENCYFMTW *fmt)
	{
	if (fmt != NULL) {
	DELETE_ARRAY(fmt->lpCurrencySymbol);
	DELETE_ARRAY(fmt->lpThousandSep);
	DELETE_ARRAY(fmt->lpDecimalSep);
	}
	}

	// TODO: This is copied in both winnmfmt.cpp and windtfmt.cpp, but really should
	// be factored out into a common helper for both.
	static UErrorCode GetEquivalentWindowsLocaleName(const Locale& locale, UnicodeString** buffer)
	{
	UErrorCode status = U_ZERO_ERROR;
	char asciiBCP47Tag[LOCALE_NAME_MAX_LENGTH] = {};

	// Convert from names like "en_CA" and "de_DE@collation=phonebook" to "en-CA" and "de-DE-u-co-phonebk".
	(void) uloc_toLanguageTag(locale.getName(), asciiBCP47Tag, UPRV_LENGTHOF(asciiBCP47Tag), FALSE, &status);

	if (U_SUCCESS(status))
	{
	// Need it to be UTF-16, not 8-bit
	// TODO: This seems like a good thing for a helper
	wchar_t bcp47Tag[LOCALE_NAME_MAX_LENGTH] = {};
	int32_t i;
	for (i = 0; i < UPRV_LENGTHOF(bcp47Tag); i++)
	{
	if (asciiBCP47Tag[i] == '\0')
	{
	break;
	}
	else
	{
	// normally just copy the character
	bcp47Tag[i] = static_cast<wchar_t>(asciiBCP47Tag[i]);
	}
	}

	// Ensure it's null terminated
	if (i < (UPRV_LENGTHOF(bcp47Tag) - 1))
	{
	bcp47Tag[i] = L'\0';
	}
	else
	{
	// Ran out of room.
	bcp47Tag[UPRV_LENGTHOF(bcp47Tag) - 1] = L'\0';
	}


	wchar_t windowsLocaleName[LOCALE_NAME_MAX_LENGTH] = {};

	// Note: On Windows versions below 10, there is no support for locale name aliases.
	// This means that it will fail for locales where ICU has a completely different
	// name (like ku vs ckb), and it will also not work for alternate sort locale
	// names like "de-DE-u-co-phonebk".

	// TODO: We could add some sort of exception table for cases like ku vs ckb.

	int length = ResolveLocaleName(bcp47Tag, windowsLocaleName, UPRV_LENGTHOF(windowsLocaleName));

	if (length > 0)
	{
	*buffer = new UnicodeString(windowsLocaleName);
	}
	else
	{
	status = U_UNSUPPORTED_ERROR;
	}
	}
	return status;
	}

	Win32NumberFormat::Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status)
	: NumberFormat(), fCurrency(currency), fFormatInfo(NULL), fFractionDigitsSet(FALSE), fWindowsLocaleName(nullptr)
	{
	if (!U_FAILURE(status)) {
	fLCID = locale.getLCID();

	GetEquivalentWindowsLocaleName(locale, &fWindowsLocaleName);
	// Note: In the previous code, it would look up the LCID for the locale, and if
	// the locale was not recognized then it would get an LCID of 0, which is a
	// synonym for LOCALE_USER_DEFAULT on Windows.
	// If the above method fails, then fWindowsLocaleName will remain as nullptr, and
	// then we will pass nullptr to API GetLocaleInfoEx, which is the same as passing
	// LOCALE_USER_DEFAULT.

	// Resolve actual locale to be used later
	UErrorCode tmpsts = U_ZERO_ERROR;
	char tmpLocID[ULOC_FULLNAME_CAPACITY];
	int32_t len = uloc_getLocaleForLCID(fLCID, tmpLocID, UPRV_LENGTHOF(tmpLocID) - 1, &tmpsts);
	if (U_SUCCESS(tmpsts)) {
	tmpLocID[len] = 0;
	fLocale = Locale((const char*)tmpLocID);
	}

	const wchar_t *localeName = nullptr;

	if (fWindowsLocaleName != nullptr)
	{
	localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
	}

	fFormatInfo = (FormatInfo*)uprv_malloc(sizeof(FormatInfo));

	if (fCurrency) {
	getCurrencyFormat(&fFormatInfo->currency, localeName);
	} else {
	getNumberFormat(&fFormatInfo->number, localeName);
	}
	}
	}

	Win32NumberFormat::Win32NumberFormat(const Win32NumberFormat &other)
	: NumberFormat(other), fFormatInfo((FormatInfo*)uprv_malloc(sizeof(FormatInfo)))
	{
	if (fFormatInfo != NULL) {
	uprv_memset(fFormatInfo, 0, sizeof(*fFormatInfo));
	}
	*this = other;
	}

	Win32NumberFormat::~Win32NumberFormat()
	{
	if (fFormatInfo != NULL) {
	if (fCurrency) {
	freeCurrencyFormat(&fFormatInfo->currency);
	} else {
	freeNumberFormat(&fFormatInfo->number);
	}

	uprv_free(fFormatInfo);
	}
	delete fWindowsLocaleName;
	}

	Win32NumberFormat &Win32NumberFormat::operator=(const Win32NumberFormat &other)
	{
	NumberFormat::operator=(other);

	this->fCurrency = other.fCurrency;
	this->fLocale = other.fLocale;
	this->fLCID = other.fLCID;
	this->fFractionDigitsSet = other.fFractionDigitsSet;
	this->fWindowsLocaleName = other.fWindowsLocaleName == NULL ? NULL : new UnicodeString(*other.fWindowsLocaleName);

	const wchar_t *localeName = nullptr;

	if (fWindowsLocaleName != nullptr)
	{
	localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
	}

	if (fCurrency) {
	freeCurrencyFormat(&fFormatInfo->currency);
	getCurrencyFormat(&fFormatInfo->currency, localeName);
	} else {
	freeNumberFormat(&fFormatInfo->number);
	getNumberFormat(&fFormatInfo->number, localeName);
	}

	return *this;
	}

	Win32NumberFormat *Win32NumberFormat::clone() const
	{
	return new Win32NumberFormat(*this);
	}

	UnicodeString& Win32NumberFormat::format(double number, UnicodeString& appendTo, FieldPosition& /* pos */) const
	{
	return format(getMaximumFractionDigits(), appendTo, L"%.16f", number);
	}

	UnicodeString& Win32NumberFormat::format(int32_t number, UnicodeString& appendTo, FieldPosition& /* pos */) const
	{
	return format(getMinimumFractionDigits(), appendTo, L"%I32d", number);
	}

	UnicodeString& Win32NumberFormat::format(int64_t number, UnicodeString& appendTo, FieldPosition& /* pos */) const
	{
	return format(getMinimumFractionDigits(), appendTo, L"%I64d", number);
	}

	void Win32NumberFormat::parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const
	{
	UErrorCode status = U_ZERO_ERROR;
	NumberFormat *nf = fCurrency? NumberFormat::createCurrencyInstance(fLocale, status) : NumberFormat::createInstance(fLocale, status);

	nf->parse(text, result, parsePosition);
	delete nf;
	}
	void Win32NumberFormat::setMaximumFractionDigits(int32_t newValue)
	{
	fFractionDigitsSet = TRUE;
	NumberFormat::setMaximumFractionDigits(newValue);
	}

	void Win32NumberFormat::setMinimumFractionDigits(int32_t newValue)
	{
	fFractionDigitsSet = TRUE;
	NumberFormat::setMinimumFractionDigits(newValue);
	}

	UnicodeString &Win32NumberFormat::format(int32_t numDigits, UnicodeString &appendTo, const wchar_t *fmt, ...) const
	{
	wchar_t nStackBuffer[STACK_BUFFER_SIZE];
	wchar_t *nBuffer = nStackBuffer;
	va_list args;
	int result;

	nBuffer[0] = 0x0000;

	/* Due to the arguments causing a result to be <= 23 characters (+2 for NULL and minus),
	we don't need to reallocate the buffer. */
	va_start(args, fmt);
	result = _vsnwprintf(nBuffer, STACK_BUFFER_SIZE, fmt, args);
	va_end(args);

	/* Just to make sure of the above statement, we add this assert */
	U_ASSERT(result >=0);
	// The following code is not used because _vscwprintf isn't available on MinGW at the moment.
	/*if (result < 0) {
	int newLength;

	va_start(args, fmt);
	newLength = _vscwprintf(fmt, args);
	va_end(args);

	nBuffer = NEW_ARRAY(UChar, newLength + 1);

	va_start(args, fmt);
	result = _vsnwprintf(nBuffer, newLength + 1, fmt, args);
	va_end(args);
	}*/

	// vswprintf is sensitive to the locale set by setlocale. For some locales
	// it doesn't use "." as the decimal separator, which is what GetNumberFormatW
	// and GetCurrencyFormatW both expect to see.
	//
	// To fix this, we scan over the string and replace the first non-digits, except
	// for a leading "-", with a "."
	//
	// Note: (nBuffer[0] == L'-') will evaluate to 1 if there is a leading '-' in the
	// number, and 0 otherwise.
	for (wchar_t p = &nBuffer[nBuffer[0] == L'-']; p != L'\0'; p += 1) {
	if (p < L'0' \|\| p > L'9') {
	*p = L'.';
	break;
	}
	}

	wchar_t stackBuffer[STACK_BUFFER_SIZE];
	wchar_t *buffer = stackBuffer;
	FormatInfo formatInfo;

	formatInfo = *fFormatInfo;
	buffer[0] = 0x0000;

	const wchar_t *localeName = nullptr;

	if (fWindowsLocaleName != nullptr)
	{
	localeName = reinterpret_cast<const wchar_t*>(toOldUCharPtr(fWindowsLocaleName->getTerminatedBuffer()));
	}

	if (fCurrency) {
	if (fFractionDigitsSet) {
	formatInfo.currency.NumDigits = (UINT) numDigits;
	}

	if (!isGroupingUsed()) {
	formatInfo.currency.Grouping = 0;
	}

	result = GetCurrencyFormatEx(localeName, 0, nBuffer, &formatInfo.currency, buffer, STACK_BUFFER_SIZE);

	if (result == 0) {
	DWORD lastError = GetLastError();

	if (lastError == ERROR_INSUFFICIENT_BUFFER) {
	int newLength = GetCurrencyFormatEx(localeName, 0, nBuffer, &formatInfo.currency, NULL, 0);

	buffer = NEW_ARRAY(wchar_t, newLength);
	buffer[0] = 0x0000;
	GetCurrencyFormatEx(localeName, 0, nBuffer, &formatInfo.currency, buffer, newLength);
	}
	}
	} else {
	if (fFractionDigitsSet) {
	formatInfo.number.NumDigits = (UINT) numDigits;
	}

	if (!isGroupingUsed()) {
	formatInfo.number.Grouping = 0;
	}

	result = GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, buffer, STACK_BUFFER_SIZE);

	if (result == 0) {
	if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
	int newLength = GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, NULL, 0);

	buffer = NEW_ARRAY(wchar_t, newLength);
	buffer[0] = 0x0000;
	GetNumberFormatEx(localeName, 0, nBuffer, &formatInfo.number, buffer, newLength);
	}
	}
	}

	appendTo.append((UChar *)buffer, (int32_t) wcslen(buffer));

	if (buffer != stackBuffer) {
	DELETE_ARRAY(buffer);
	}

	/*if (nBuffer != nStackBuffer) {
	DELETE_ARRAY(nBuffer);
	}*/

	return appendTo;
	}

	U_NAMESPACE_END

	#endif /* #if !UCONFIG_NO_FORMATTING */

	#endif // U_PLATFORM_USES_ONLY_WIN32_API