C++ UnicodeString::getBuffer方法代码示例

U_CAPI int32_t U_EXPORT2
uspoof_areConfusableUnicodeString(const USpoofChecker *sc,
                                  const icu::UnicodeString &s1,
                                  const icu::UnicodeString &s2,
                                  UErrorCode *status) {

    const UChar *u1  = s1.getBuffer();
    int32_t  length1 = s1.length();
    const UChar *u2  = s2.getBuffer();
    int32_t  length2 = s2.length();

    int32_t results  = uspoof_areConfusable(sc, u1, length1, u2, length2, status);
    return results;
}

	void FStringConverter::ConvertString(const TCHAR* Source, const int32 SourceStartIndex, const int32 SourceLen, icu::UnicodeString& Destination, const bool ShouldNullTerminate)
	{
		if (SourceLen > 0)
		{
			UErrorCode ICUStatus = U_ZERO_ERROR;

			ucnv_reset(ICUConverter);

			// Get the internal buffer of the string, we're going to use it as scratch space
			const int32_t DestinationCapacityUChars = SourceLen * 2;
			UChar* InternalStringBuffer = Destination.getBuffer(DestinationCapacityUChars);

			// Perform the conversion into the string buffer
			const int32_t SourceSizeBytes = SourceLen * sizeof(TCHAR);
			const int32_t DestinationLength = ucnv_toUChars(ICUConverter, InternalStringBuffer, DestinationCapacityUChars, reinterpret_cast<const char*>(Source + SourceStartIndex), SourceSizeBytes, &ICUStatus);

			// Optionally null terminate the string
			if (ShouldNullTerminate)
			{
				InternalStringBuffer[DestinationLength] = 0;
			}

			// Size it back down to the correct size and release our lock on the string buffer
			Destination.releaseBuffer(DestinationLength);

			check(U_SUCCESS(ICUStatus));
		}
		else
		{
			Destination.remove();
		}
	}

/**
 * Write an Unitex file content (to system filesystem or filespace)
 * it write from two buffer (prefix and suffix). This is useful for writing both header and footer (or BOM and text...)
 */
    UNITEX_FUNC int UNITEX_CALL WriteUnicodeUnitexFile(const char*filename, icu::UnicodeString const& uString)
    {
        UChar uBom = 0xfeff;

        const UChar * uBuffer = uString.getBuffer();
        int32_t uLength = uString.length();

        bool result = WriteUnitexFile(filename, &uBom, sizeof(UChar), uBuffer, uLength * sizeof(UChar)) == 0;

        return result;
    }

bool ustring_from_char(icu::UnicodeString& ret,
                       const String& str,
                       UErrorCode &error) {
  int32_t capacity = str.size() + 1;
  UChar *utf16 = ret.getBuffer(capacity);
  int32_t utf16_len = 0;
  error = U_ZERO_ERROR;
  u_strFromUTF8WithSub(utf16, ret.getCapacity(), &utf16_len,
                       str.c_str(), str.size(),
                       U_SENTINEL /* no substitution */,
                       nullptr, &error);
  ret.releaseBuffer(utf16_len);
  if (U_FAILURE(error)) {
    ret.setToBogus();
    return false;
  }
  return true;
}

static void
printLine(UChar32 start, UChar32 end, Status status, const icu::UnicodeString &mapping) {
    if(start==end) {
        printf("%04lX          ", (long)start);
    } else {
        printf("%04lX..%04lX    ", (long)start, (long)end);
    }
    printf("; %s", statusNames[status]);
    if(status==MAPPED || status==DEVIATION || !mapping.isEmpty()) {
        printf(" ;");
        const UChar *buffer=mapping.getBuffer();
        int32_t length=mapping.length();
        int32_t i=0;
        UChar32 c;
        while(i<length) {
            U16_NEXT(buffer, i, length, c);
            printf(" %04lX", (long)c);
        }
    }
    puts("");
}

static int
toIDNA2003(const UStringPrepProfile *prep, UChar32 c, icu::UnicodeString &destString) {
    UChar src[2];
    int32_t srcLength=0;
    U16_APPEND_UNSAFE(src, srcLength, c);
    UChar *dest;
    int32_t destLength;
    dest=destString.getBuffer(32);
    if(dest==NULL) {
        return FALSE;
    }
    UErrorCode errorCode=U_ZERO_ERROR;
    destLength=usprep_prepare(prep, src, srcLength,
                              dest, destString.getCapacity(),
                              USPREP_DEFAULT, NULL, &errorCode);
    destString.releaseBuffer(destLength);
    if(errorCode==U_STRINGPREP_PROHIBITED_ERROR) {
        return -1;
    } else {
        // Returns FALSE=0 for U_STRINGPREP_UNASSIGNED_ERROR and processing errors,
        // TRUE=1 if c is valid or mapped.
        return U_SUCCESS(errorCode);
    }
}

	jobject operator()(icu::UnicodeString const& value) const {
		return env->NewString(value.getBuffer(), value.length());
	}

QString
EnabledLocalesModel::unicodeStringToQString( const icu::UnicodeString& sourceStr )
{
    return QString( reinterpret_cast<const QChar*>( sourceStr.getBuffer() ),
                    sourceStr.length() );
}