icuSources/i18n/winnmfmt.cpp

   1 /*
   2 ********************************************************************************
   3 *   Copyright (C) 2005-2011, 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 #if U_PLATFORM_USES_ONLY_WIN32_API
  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     if (fmt != NULL) {
 101         DELETE_ARRAY(fmt->lpThousandSep);
 102         DELETE_ARRAY(fmt->lpDecimalSep);
 103     }
 104 }
 105
 106 static void getCurrencyFormat(CURRENCYFMTW *fmt, int32_t lcid)
 107 {
 108     char buf[10];
 109
 110     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
 111     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));
 112
 113     GetLocaleInfoA(lcid, LOCALE_SMONGROUPING, buf, sizeof(buf));
 114     fmt->Grouping = getGrouping(buf);
 115
 116     fmt->lpDecimalSep = NEW_ARRAY(UChar, 6);
 117     GetLocaleInfoW(lcid, LOCALE_SMONDECIMALSEP,  fmt->lpDecimalSep,  6);
 118
 119     fmt->lpThousandSep = NEW_ARRAY(UChar, 6);
 120     GetLocaleInfoW(lcid, LOCALE_SMONTHOUSANDSEP, fmt->lpThousandSep, 6);
 121
 122     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_INEGCURR,  (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
 123     GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRENCY, (LPWSTR) &fmt->PositiveOrder, sizeof(UINT));
 124
 125     fmt->lpCurrencySymbol = NEW_ARRAY(UChar, 8);
 126     GetLocaleInfoW(lcid, LOCALE_SCURRENCY, (LPWSTR) fmt->lpCurrencySymbol, 8);
 127 }
 128
 129 static void freeCurrencyFormat(CURRENCYFMTW *fmt)
 130 {
 131     if (fmt != NULL) {
 132         DELETE_ARRAY(fmt->lpCurrencySymbol);
 133         DELETE_ARRAY(fmt->lpThousandSep);
 134         DELETE_ARRAY(fmt->lpDecimalSep);
 135     }
 136 }
 137
 138 // TODO: keep locale too?
 139 Win32NumberFormat::Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status)
 140   : NumberFormat(), fCurrency(currency), fFractionDigitsSet(FALSE), fFormatInfo(NULL)
 141 {
 142     if (!U_FAILURE(status)) {
 143         fLCID = locale.getLCID();
 144
 145         fFormatInfo = (FormatInfo*)uprv_malloc(sizeof(FormatInfo));
 146
 147         if (fCurrency) {
 148             getCurrencyFormat(&fFormatInfo->currency, fLCID);
 149         } else {
 150             getNumberFormat(&fFormatInfo->number, fLCID);
 151         }
 152     }
 153 }
 154
 155 Win32NumberFormat::Win32NumberFormat(const Win32NumberFormat &other)
 156   : NumberFormat(other), fFormatInfo((FormatInfo*)uprv_malloc(sizeof(FormatInfo)))
 157 {
 158     if (fFormatInfo != NULL) {
 159         uprv_memset(fFormatInfo, 0, sizeof(*fFormatInfo));
 160     }
 161     *this = other;
 162 }
 163
 164 Win32NumberFormat::~Win32NumberFormat()
 165 {
 166     if (fFormatInfo != NULL) {
 167         if (fCurrency) {
 168             freeCurrencyFormat(&fFormatInfo->currency);
 169         } else {
 170             freeNumberFormat(&fFormatInfo->number);
 171         }
 172
 173         uprv_free(fFormatInfo);
 174     }
 175 }
 176
 177 Win32NumberFormat &Win32NumberFormat::operator=(const Win32NumberFormat &other)
 178 {
 179     NumberFormat::operator=(other);
 180
 181     this->fCurrency          = other.fCurrency;
 182     this->fLCID              = other.fLCID;
 183     this->fFractionDigitsSet = other.fFractionDigitsSet;
 184
 185     if (fCurrency) {
 186         freeCurrencyFormat(&fFormatInfo->currency);
 187         getCurrencyFormat(&fFormatInfo->currency, fLCID);
 188     } else {
 189         freeNumberFormat(&fFormatInfo->number);
 190         getNumberFormat(&fFormatInfo->number, fLCID);
 191     }
 192
 193     return *this;
 194 }
 195
 196 Format *Win32NumberFormat::clone(void) const
 197 {
 198     return new Win32NumberFormat(*this);
 199 }
 200
 201 UnicodeString& Win32NumberFormat::format(double number, UnicodeString& appendTo, FieldPosition& pos) const
 202 {
 203     return format(getMaximumFractionDigits(), appendTo, L"%.16f", number);
 204 }
 205
 206 UnicodeString& Win32NumberFormat::format(int32_t number, UnicodeString& appendTo, FieldPosition& pos) const
 207 {
 208     return format(getMinimumFractionDigits(), appendTo, L"%I32d", number);
 209 }
 210
 211 UnicodeString& Win32NumberFormat::format(int64_t number, UnicodeString& appendTo, FieldPosition& pos) const
 212 {
 213     return format(getMinimumFractionDigits(), appendTo, L"%I64d", number);
 214 }
 215
 216 // TODO: cache Locale and NumberFormat? Could keep locale passed to constructor...
 217 void Win32NumberFormat::parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const
 218 {
 219     UErrorCode status = U_ZERO_ERROR;
 220     Locale loc(uprv_convertToPosix(fLCID, &status));
 221     NumberFormat *nf = fCurrency? NumberFormat::createCurrencyInstance(loc, status) : NumberFormat::createInstance(loc, status);
 222
 223     nf->parse(text, result, parsePosition);
 224     delete nf;
 225 }
 226 void Win32NumberFormat::setMaximumFractionDigits(int32_t newValue)
 227 {
 228     fFractionDigitsSet = TRUE;
 229     NumberFormat::setMaximumFractionDigits(newValue);
 230 }
 231
 232 void Win32NumberFormat::setMinimumFractionDigits(int32_t newValue)
 233 {
 234     fFractionDigitsSet = TRUE;
 235     NumberFormat::setMinimumFractionDigits(newValue);
 236 }
 237
 238 UnicodeString &Win32NumberFormat::format(int32_t numDigits, UnicodeString &appendTo, wchar_t *fmt, ...) const
 239 {
 240     wchar_t nStackBuffer[STACK_BUFFER_SIZE];
 241     wchar_t *nBuffer = nStackBuffer;
 242     va_list args;
 243     int result;
 244
 245     nBuffer[0] = 0x0000;
 246
 247     /* Due to the arguments causing a result to be <= 23 characters (+2 for NULL and minus),
 248     we don't need to reallocate the buffer. */
 249     va_start(args, fmt);
 250     result = _vsnwprintf(nBuffer, STACK_BUFFER_SIZE, fmt, args);
 251     va_end(args);
 252
 253     /* Just to make sure of the above statement, we add this assert */
 254     U_ASSERT(result >=0);
 255     // The following code is not used because _vscwprintf isn't available on MinGW at the moment.
 256     /*if (result < 0) {
 257         int newLength;
 258
 259         va_start(args, fmt);
 260         newLength = _vscwprintf(fmt, args);
 261         va_end(args);
 262
 263         nBuffer = NEW_ARRAY(UChar, newLength + 1);
 264
 265         va_start(args, fmt);
 266         result = _vsnwprintf(nBuffer, newLength + 1, fmt, args);
 267         va_end(args);
 268     }*/
 269
 270     // vswprintf is sensitive to the locale set by setlocale. For some locales
 271     // it doesn't use "." as the decimal separator, which is what GetNumberFormatW
 272     // and GetCurrencyFormatW both expect to see.
 273     //
 274     // To fix this, we scan over the string and replace the first non-digits, except
 275     // for a leading "-", with a "."
 276     //
 277     // Note: (nBuffer[0] == L'-') will evaluate to 1 if there is a leading '-' in the
 278     // number, and 0 otherwise.
 279     for (wchar_t *p = &nBuffer[nBuffer[0] == L'-']; *p != L'\0'; p += 1) {
 280         if (*p < L'0' || *p > L'9') {
 281             *p = L'.';
 282             break;
 283         }
 284     }
 285
 286     UChar stackBuffer[STACK_BUFFER_SIZE];
 287     UChar *buffer = stackBuffer;
 288     FormatInfo formatInfo;
 289
 290     formatInfo = *fFormatInfo;
 291     buffer[0] = 0x0000;
 292
 293     if (fCurrency) {
 294         if (fFractionDigitsSet) {
 295             formatInfo.currency.NumDigits = (UINT) numDigits;
 296         }
 297
 298         if (!isGroupingUsed()) {
 299             formatInfo.currency.Grouping = 0;
 300         }
 301
 302         result = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, buffer, STACK_BUFFER_SIZE);
 303
 304         if (result == 0) {
 305             DWORD lastError = GetLastError();
 306
 307             if (lastError == ERROR_INSUFFICIENT_BUFFER) {
 308                 int newLength = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, NULL, 0);
 309
 310                 buffer = NEW_ARRAY(UChar, newLength);
 311                 buffer[0] = 0x0000;
 312                 GetCurrencyFormatW(fLCID, 0, nBuffer,  &formatInfo.currency, buffer, newLength);
 313             }
 314         }
 315     } else {
 316         if (fFractionDigitsSet) {
 317             formatInfo.number.NumDigits = (UINT) numDigits;
 318         }
 319
 320         if (!isGroupingUsed()) {
 321             formatInfo.number.Grouping = 0;
 322         }
 323
 324         result = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, STACK_BUFFER_SIZE);
 325
 326         if (result == 0) {
 327             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
 328                 int newLength = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, NULL, 0);
 329
 330                 buffer = NEW_ARRAY(UChar, newLength);
 331                 buffer[0] = 0x0000;
 332                 GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, newLength);
 333             }
 334         }
 335     }
 336
 337     appendTo.append(buffer, (int32_t) wcslen(buffer));
 338
 339     if (buffer != stackBuffer) {
 340         DELETE_ARRAY(buffer);
 341     }
 342
 343     /*if (nBuffer != nStackBuffer) {
 344         DELETE_ARRAY(nBuffer);
 345     }*/
 346
 347     return appendTo;
 348 }
 349
 350 U_NAMESPACE_END
 351
 352 #endif /* #if !UCONFIG_NO_FORMATTING */
 353
 354 #endif // U_PLATFORM_USES_ONLY_WIN32_API