Check in the pristine copy of ICU 4.6...

icu46/source/i18n/winnmfmt.cpp

+/*
+********************************************************************************
+*   Copyright (C) 2005-2007, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+********************************************************************************
+*
+* File WINNMFMT.CPP
+*
+********************************************************************************
+*/
+
+#include "unicode/utypes.h"
+
+#ifdef U_WINDOWS
+
+#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"
+
+#   define WIN32_LEAN_AND_MEAN
+#   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 char *grouping)
+{
+    UINT g = 0;
+        const char *s;
+
+    for (s = grouping; *s != '\0'; s += 1) {
+        if (*s > '0' && *s < '9') {
+            g = g * 10 + (*s - '0');
+        } else if (*s != ';') {
+            break;
+        }
+    }
+
+    if (*s != '0') {
+        g *= 10;
+    }
+
+    return g;
+}
+
+static void getNumberFormat(NUMBERFMTW *fmt, int32_t lcid)
+{
+    char buf[10];
+
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_IDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ILZERO,  (LPWSTR) &fmt->LeadingZero, sizeof(UINT));
+
+    GetLocaleInfoA(lcid, LOCALE_SGROUPING, buf, 10);
+    fmt->Grouping = getGrouping(buf);
+
+    fmt->lpDecimalSep = NEW_ARRAY(UChar, 6);
+    GetLocaleInfoW(lcid, LOCALE_SDECIMAL,  fmt->lpDecimalSep,  6);
+
+    fmt->lpThousandSep = NEW_ARRAY(UChar, 6);
+    GetLocaleInfoW(lcid, LOCALE_STHOUSAND, fmt->lpThousandSep, 6);
+
+    GetLocaleInfoW(lcid, 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, int32_t lcid)
+{
+    char buf[10];
+
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRDIGITS, (LPWSTR) &fmt->NumDigits, sizeof(UINT));
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ILZERO, (LPWSTR) &fmt->LeadingZero, sizeof(UINT));
+
+    GetLocaleInfoA(lcid, LOCALE_SMONGROUPING, buf, sizeof(buf));
+    fmt->Grouping = getGrouping(buf);
+
+    fmt->lpDecimalSep = NEW_ARRAY(UChar, 6);
+    GetLocaleInfoW(lcid, LOCALE_SMONDECIMALSEP,  fmt->lpDecimalSep,  6);
+
+    fmt->lpThousandSep = NEW_ARRAY(UChar, 6);
+    GetLocaleInfoW(lcid, LOCALE_SMONTHOUSANDSEP, fmt->lpThousandSep, 6);
+
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_INEGCURR,  (LPWSTR) &fmt->NegativeOrder, sizeof(UINT));
+    GetLocaleInfoW(lcid, LOCALE_RETURN_NUMBER|LOCALE_ICURRENCY, (LPWSTR) &fmt->PositiveOrder, sizeof(UINT));
+
+    fmt->lpCurrencySymbol = NEW_ARRAY(UChar, 8);
+    GetLocaleInfoW(lcid, 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: keep locale too?
+Win32NumberFormat::Win32NumberFormat(const Locale &locale, UBool currency, UErrorCode &status)
+  : NumberFormat(), fCurrency(currency), fFractionDigitsSet(FALSE), fFormatInfo(NULL)
+{
+    if (!U_FAILURE(status)) {
+        fLCID = locale.getLCID();
+
+        fFormatInfo = (FormatInfo*)uprv_malloc(sizeof(FormatInfo));
+
+        if (fCurrency) {
+            getCurrencyFormat(&fFormatInfo->currency, fLCID);
+        } else {
+            getNumberFormat(&fFormatInfo->number, fLCID);
+        }
+    }
+}
+
+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);
+    }
+}
+
+Win32NumberFormat &Win32NumberFormat::operator=(const Win32NumberFormat &other)
+{
+    NumberFormat::operator=(other);
+
+    this->fCurrency          = other.fCurrency;
+    this->fLCID              = other.fLCID;
+    this->fFractionDigitsSet = other.fFractionDigitsSet;
+
+    if (fCurrency) {
+        freeCurrencyFormat(&fFormatInfo->currency);
+        getCurrencyFormat(&fFormatInfo->currency, fLCID);
+    } else {
+        freeNumberFormat(&fFormatInfo->number);
+        getNumberFormat(&fFormatInfo->number, fLCID);
+    }
+
+    return *this;
+}
+
+Format *Win32NumberFormat::clone(void) 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);
+}
+
+// TODO: cache Locale and NumberFormat? Could keep locale passed to constructor...
+void Win32NumberFormat::parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const
+{
+    UErrorCode status = U_ZERO_ERROR;
+    Locale loc(uprv_convertToPosix(fLCID, &status));
+    NumberFormat *nf = fCurrency? NumberFormat::createCurrencyInstance(loc, status) : NumberFormat::createInstance(loc, 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, 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;
+        }
+    }
+
+    UChar stackBuffer[STACK_BUFFER_SIZE];
+    UChar *buffer = stackBuffer;
+    FormatInfo formatInfo;
+
+    formatInfo = *fFormatInfo;
+    buffer[0] = 0x0000;
+
+    if (fCurrency) {
+        if (fFractionDigitsSet) {
+            formatInfo.currency.NumDigits = (UINT) numDigits;
+        }
+
+        if (!isGroupingUsed()) {
+            formatInfo.currency.Grouping = 0;
+        }
+
+        result = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, buffer, STACK_BUFFER_SIZE);
+
+        if (result == 0) {
+            DWORD lastError = GetLastError();
+
+            if (lastError == ERROR_INSUFFICIENT_BUFFER) {
+                int newLength = GetCurrencyFormatW(fLCID, 0, nBuffer, &formatInfo.currency, NULL, 0);
+
+                buffer = NEW_ARRAY(UChar, newLength);
+                buffer[0] = 0x0000;
+                GetCurrencyFormatW(fLCID, 0, nBuffer,  &formatInfo.currency, buffer, newLength);
+            }
+        }
+    } else {
+        if (fFractionDigitsSet) {
+            formatInfo.number.NumDigits = (UINT) numDigits;
+        }
+
+        if (!isGroupingUsed()) {
+            formatInfo.number.Grouping = 0;
+        }
+
+        result = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, STACK_BUFFER_SIZE);
+
+        if (result == 0) {
+            if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
+                int newLength = GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, NULL, 0);
+
+                buffer = NEW_ARRAY(UChar, newLength);
+                buffer[0] = 0x0000;
+                GetNumberFormatW(fLCID, 0, nBuffer, &formatInfo.number, buffer, newLength);
+            }
+        }
+    }
+
+    appendTo.append(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 // #ifdef U_WINDOWS