icuSources/i18n/winnmfmt.cpp

   1 /*
   2 ********************************************************************************
   3 *   Copyright (C) 2005-2006, International Business Machines
   4 *   Corporation and others.  All Rights Reserved.
   5 ********************************************************************************
   6 *
   7 * File WINNMFMT.CPP
   8 *
   9 ********************************************************************************
  10 */
  11
  12 #include "unicode/utypes.h"
  13
  14 #ifdef U_WINDOWS
  15
  16 #if !UCONFIG_NO_FORMATTING
  17
  18 #include "winnmfmt.h"
  19
  20 #include "unicode/format.h"
  21 #include "unicode/numfmt.h"
  22 #include "unicode/locid.h"
  23 #include "unicode/ustring.h"
  24
  25 #include "cmemory.h"
  26 #include "uassert.h"
  27 #include "locmap.h"
  28
  29 #   define WIN32_LEAN_AND_MEAN
  30 #   define VC_EXTRALEAN
  31 #   define NOUSER
  32 #   define NOSERVICE
  33 #   define NOIME
  34 #   define NOMCX
  35 #include <windows.h>
  36 #include <stdio.h>
  37
  38 U_NAMESPACE_BEGIN
  39
  40 union FormatInfo
  41 {
  42     NUMBERFMTW   number;
  43     CURRENCYFMTW currency;
  44 };
  45
  46 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Win32NumberFormat)
  47
  48 #define NEW_ARRAY(type,count) (type *) uprv_malloc((count) * sizeof(type))
  49 #define DELETE_ARRAY(array) uprv_free((void *) (array))
  50
  51 #define STACK_BUFFER_SIZE 32
  52
  53 /*
  54  * Turns a string of the form "3;2;0" into the grouping UINT
  55  * needed for NUMBERFMT and CURRENCYFMT. If the string does not
  56  * end in ";0" then the return value should be multiplied by 10.
  57  * (e.g. "3" => 30, "3;2" => 320)
  58  */
  59 static UINT getGrouping(const char *grouping)
  60 {
  61     UINT g = 0;
  62         const char *s;
  63
  64     for (s = grouping; *s != '\0'; s += 1) {
  65         if (*s > '0' && *s < '9') {
  66             g = g * 10 + (*s - '0');
  67         } else if (*s != ';') {
  68             break;
  69         }
  70     }
  71
  72     if (*s != '0') {
  73         g *= 10;
  74     }
  75
  76     return g;
  77 }
  78
  79 static void getNumberFormat(NUMBERFMTW *fmt, int32_t lcid)
  80 {
  81     char buf[10];
  82
  83     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_IDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
  84     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ILZERO,  (LPWSTR) &fmt->LeadingZero, sizeof(UINT));
  85
  86     GetLocaleInfoA(lcid, LOCALE_SGROUPING, buf, 10);
  87     fmt->Grouping = getGrouping(buf);
  88
  89     fmt->lpDecimalSep = NEW_ARRAY(UChar, 6);
  90     GetLocaleInfoW(lcid, LOCALE_SDECIMAL,  fmt->lpDecimalSep,  6);
  91
  92     fmt->lpThousandSep = NEW_ARRAY(UChar, 6);
  93     GetLocaleInfoW(lcid, LOCALE_STHOUSAND, fmt->lpThousandSep, 6);
  94
  95     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_INEGNUMBER, (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
  96 }
  97
  98 static void freeNumberFormat(NUMBERFMTW *fmt)
  99 {
 100     DELETE_ARRAY(fmt->lpThousandSep);
 101     DELETE_ARRAY(fmt->lpDecimalSep);
 102 }
 103
 104 static void getCurrencyFormat(CURRENCYFMTW *fmt, int32_t lcid)
 105 {
 106     char buf[10];
 107
 108     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
 109     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));
 110
 111     GetLocaleInfoA(lcid, LOCALE_SMONGROUPING, buf, sizeof(buf));
 112     fmt->Grouping = getGrouping(buf);
 113
 114     fmt->lpDecimalSep = NEW_ARRAY(UChar, 6);
 115     GetLocaleInfoW(lcid, LOCALE_SMONDECIMALSEP,  fmt->lpDecimalSep,  6);
 116
 117     fmt->lpThousandSep = NEW_ARRAY(UChar, 6);
 118     GetLocaleInfoW(lcid, LOCALE_SMONTHOUSANDSEP, fmt->lpThousandSep, 6);
 119
 120     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_INEGCURR,  (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
 121     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRENCY, (LPWSTR) &fmt->PositiveOrder, sizeof(UINT));
 122
 123     fmt->lpCurrencySymbol = NEW_ARRAY(UChar, 8);
 124     GetLocaleInfoW(lcid, LOCALE_SCURRENCY, (LPWSTR) fmt->lpCurrencySymbol, 8);
 125 }
 126
 127 static void freeCurrencyFormat(CURRENCYFMTW *fmt)
 128 {
 129     DELETE_ARRAY(fmt->lpCurrencySymbol);
 130     DELETE_ARRAY(fmt->lpThousandSep);
 131     DELETE_ARRAY(fmt->lpDecimalSep);
 132 }
 133
 134 // TODO: keep locale too?
 135 Win32NumberFormat::Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status)
 136   : NumberFormat(), fCurrency(currency), fFractionDigitsSet(FALSE)
 137 {
 138     if (!U_FAILURE(status)) {
 139         fLCID = locale.getLCID();
 140
 141         fFormatInfo = (FormatInfo*)uprv_malloc(sizeof(FormatInfo));
 142
 143         if (fCurrency) {
 144             getCurrencyFormat(&fFormatInfo->currency, fLCID);
 145         } else {
 146             getNumberFormat(&fFormatInfo->number, fLCID);
 147         }
 148     }
 149 }
 150
 151 Win32NumberFormat::Win32NumberFormat(const Win32NumberFormat &other)
 152   : NumberFormat(other)
 153 {
 154     *this = other;
 155 }
 156
 157 Win32NumberFormat::~Win32NumberFormat()
 158 {
 159     if (fCurrency) {
 160         freeCurrencyFormat(&fFormatInfo->currency);
 161     } else {
 162         freeNumberFormat(&fFormatInfo->number);
 163     }
 164
 165     uprv_free(fFormatInfo);
 166 }
 167
 168 Win32NumberFormat &Win32NumberFormat::operator=(const Win32NumberFormat &other)
 169 {
 170     NumberFormat::operator=(other);
 171
 172     this->fCurrency          = other.fCurrency;
 173     this->fLCID              = other.fLCID;
 174     this->fFractionDigitsSet = other.fFractionDigitsSet;
 175
 176     if (fCurrency) {
 177         freeCurrencyFormat(&fFormatInfo->currency);
 178         getCurrencyFormat(&fFormatInfo->currency, fLCID);
 179     } else {
 180         freeNumberFormat(&fFormatInfo->number);
 181         getNumberFormat(&fFormatInfo->number, fLCID);
 182     }
 183
 184     return *this;
 185 }
 186
 187 Format *Win32NumberFormat::clone(void) const
 188 {
 189     return new Win32NumberFormat(*this);
 190 }
 191
 192 UnicodeString& Win32NumberFormat::format(double number, UnicodeString& appendTo, FieldPosition& pos) const
 193 {
 194     return format(getMaximumFractionDigits(), appendTo, L"%.16f", number);
 195 }
 196
 197 UnicodeString& Win32NumberFormat::format(int32_t number, UnicodeString& appendTo, FieldPosition& pos) const
 198 {
 199     return format(getMinimumFractionDigits(), appendTo, L"%I32d", number);
 200 }
 201
 202 UnicodeString& Win32NumberFormat::format(int64_t number, UnicodeString& appendTo, FieldPosition& pos) const
 203 {
 204     return format(getMinimumFractionDigits(), appendTo, L"%I64d", number);
 205 }
 206
 207 // TODO: cache Locale and NumberFormat? Could keep locale passed to constructor...
 208 void Win32NumberFormat::parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const
 209 {
 210     UErrorCode status = U_ZERO_ERROR;
 211     Locale loc(uprv_convertToPosix(fLCID, &status));
 212     NumberFormat *nf = fCurrency? NumberFormat::createCurrencyInstance(loc, status) : NumberFormat::createInstance(loc, status);
 213
 214     nf->parse(text, result, parsePosition);
 215     delete nf;
 216 }
 217 void Win32NumberFormat::setMaximumFractionDigits(int32_t newValue)
 218 {
 219     fFractionDigitsSet = TRUE;
 220     NumberFormat::setMaximumFractionDigits(newValue);
 221 }
 222
 223 void Win32NumberFormat::setMinimumFractionDigits(int32_t newValue)
 224 {
 225     fFractionDigitsSet = TRUE;
 226     NumberFormat::setMinimumFractionDigits(newValue);
 227 }
 228
 229 UnicodeString &Win32NumberFormat::format(int32_t numDigits, UnicodeString &appendTo, wchar_t *fmt, ...) const
 230 {
 231     wchar_t nStackBuffer[STACK_BUFFER_SIZE];
 232     wchar_t *nBuffer = nStackBuffer;
 233     va_list args;
 234     int result;
 235
 236     nBuffer[0] = 0x0000;
 237
 238     /* Due to the arguments causing a result to be <= 23 characters (+2 for NULL and minus),
 239     we don't need to reallocate the buffer. */
 240     va_start(args, fmt);
 241     result = _vsnwprintf(nBuffer, STACK_BUFFER_SIZE, fmt, args);
 242     va_end(args);
 243
 244     /* Just to make sure of the above statement, we add this assert */
 245     U_ASSERT(result >=0);
 246     // The following code is not used because _vscwprintf isn't available on MinGW at the moment.
 247     /*if (result < 0) {
 248         int newLength;
 249
 250         va_start(args, fmt);
 251         newLength = _vscwprintf(fmt, args);
 252         va_end(args);
 253
 254         nBuffer = NEW_ARRAY(UChar, newLength + 1);
 255
 256         va_start(args, fmt);
 257         result = _vsnwprintf(nBuffer, newLength + 1, fmt, args);
 258         va_end(args);
 259     }*/
 260
 261     // vswprintf is sensitive to the locale set by setlocale. For some locales
 262     // it doesn't use "." as the decimal separator, which is what GetNumberFormatW
 263     // and GetCurrencyFormatW both expect to see.
 264     //
 265     // To fix this, we scan over the string and replace the first non-digits, except
 266     // for a leading "-", with a "."
 267     //
 268     // Note: (nBuffer[0] == L'-') will evaluate to 1 if there is a leading '-' in the
 269     // number, and 0 otherwise.
 270     for (wchar_t *p = &nBuffer[nBuffer[0] == L'-']; *p != L'\0'; p += 1) {
 271         if (*p < L'0' || *p > L'9') {
 272             *p = L'.';
 273             break;
 274         }
 275     }
 276
 277     UChar stackBuffer[STACK_BUFFER_SIZE];
 278     UChar *buffer = stackBuffer;
 279     FormatInfo formatInfo;
 280
 281     formatInfo = *fFormatInfo;
 282     buffer[0] = 0x0000;
 283
 284     if (fCurrency) {
 285         if (fFractionDigitsSet) {
 286             formatInfo.currency.NumDigits = (UINT) numDigits;
 287         }
 288
 289         if (!isGroupingUsed()) {
 290             formatInfo.currency.Grouping = 0;
 291         }
 292
 293         result = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, buffer, STACK_BUFFER_SIZE);
 294
 295         if (result == 0) {
 296             DWORD lastError = GetLastError();
 297
 298             if (lastError == ERROR_INSUFFICIENT_BUFFER) {
 299                 int newLength = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, NULL, 0);
 300
 301                 buffer = NEW_ARRAY(UChar, newLength);
 302                 buffer[0] = 0x0000;
 303                 GetCurrencyFormatW(fLCID, 0, nBuffer,  &formatInfo.currency, buffer, newLength);
 304             }
 305         }
 306     } else {
 307         if (fFractionDigitsSet) {
 308             formatInfo.number.NumDigits = (UINT) numDigits;
 309         }
 310
 311         if (!isGroupingUsed()) {
 312             formatInfo.number.Grouping = 0;
 313         }
 314
 315         result = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, STACK_BUFFER_SIZE);
 316
 317         if (result == 0) {
 318             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 319                 int newLength = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, NULL, 0);
 320
 321                 buffer = NEW_ARRAY(UChar, newLength);
 322                 buffer[0] = 0x0000;
 323                 GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, newLength);
 324             }
 325         }
 326     }
 327
 328     appendTo.append(buffer, (int32_t) wcslen(buffer));
 329
 330     if (buffer != stackBuffer) {
 331         DELETE_ARRAY(buffer);
 332     }
 333
 334     /*if (nBuffer != nStackBuffer) {
 335         DELETE_ARRAY(nBuffer);
 336     }*/
 337
 338     return appendTo;
 339 }
 340
 341 U_NAMESPACE_END
 342
 343 #endif /* #if !UCONFIG_NO_FORMATTING */
 344
 345 #endif // #ifdef U_WINDOWS