xmldatetime.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 1,784 行 · 第 1/4 页

    tmpDate.fTimeZone[hh] = 14;
    tmpDate.fTimeZone[mm] = 0;
    tmpDate.fValue[utc] = utc_type;
    tmpDate.normalize();

    return (set2Left? XMLDateTime::compareOrder(&tmpDate, pDate2) :
                      XMLDateTime::compareOrder(pDate1, &tmpDate));
}

int XMLDateTime::compareOrder(const XMLDateTime* const lValue
                            , const XMLDateTime* const rValue)
                            //, MemoryManager* const memMgr)
{
    //
    // If any of the them is not normalized() yet,
    // we need to do something here.
    //
    XMLDateTime lTemp = *lValue;
    XMLDateTime rTemp = *rValue;

    lTemp.normalize();
    rTemp.normalize();

    for ( int i = 0 ; i < TOTAL_SIZE; i++ )
    {
        if ( lTemp.fValue[i] < rTemp.fValue[i] )
        {
            return LESS_THAN;
        }
        else if ( lTemp.fValue[i] > rTemp.fValue[i] )
        {
            return GREATER_THAN;
        }
    }

    if ( lTemp.fHasTime)
    {
        if ( lTemp.fMiliSecond < rTemp.fMiliSecond )
        {
            return LESS_THAN;
        }
        else if ( lTemp.fMiliSecond > rTemp.fMiliSecond )
        {
            return GREATER_THAN;
        }
    }

    return EQUAL;
}

// ---------------------------------------------------------------------------
//  ctor and dtor
// ---------------------------------------------------------------------------
XMLDateTime::~XMLDateTime()
{    
    if (fBuffer)
        fMemoryManager->deallocate(fBuffer);//delete[] fBuffer;  
}

XMLDateTime::XMLDateTime(MemoryManager* const manager)
: fStart(0)
, fEnd(0)
, fBufferMaxLen(0)
, fBuffer(0)
, fMiliSecond(0)
, fHasTime(false)
, fMemoryManager(manager)
{
    reset();
}

XMLDateTime::XMLDateTime(const XMLCh* const aString,
                         MemoryManager* const manager)
: fStart(0)
, fEnd(0)
, fBufferMaxLen(0)
, fBuffer(0)
, fMiliSecond(0)
, fHasTime(false)
, fMemoryManager(manager)
{
    setBuffer(aString);
}

// -----------------------------------------------------------------------
// Copy ctor and Assignment operators
// -----------------------------------------------------------------------

XMLDateTime::XMLDateTime(const XMLDateTime &toCopy)
: fBufferMaxLen(0)
, fBuffer(0)
, fMemoryManager(toCopy.fMemoryManager)
{
    copy(toCopy);
}

XMLDateTime& XMLDateTime::operator=(const XMLDateTime& rhs)
{
    if (this == &rhs)
        return *this;

    copy(rhs);
    return *this;
}

// -----------------------------------------------------------------------
// Implementation of Abstract Interface
// -----------------------------------------------------------------------

//
// We may simply return the handle to fBuffer, but
// for the sake of consistency, we return a duplicated copy
// and the caller is responsible for the release of the buffer
// just like any other things in the XMLNumber family.
//
XMLCh*  XMLDateTime::toString() const
{
    assertBuffer();

    // Return data using global operator new
    XMLCh* retBuf = XMLString::replicate(fBuffer);
    return retBuf;
}

//
// We may simply return the handle to fBuffer
//
XMLCh*  XMLDateTime::getRawData() const
{
    assertBuffer();    
    return fBuffer;
}


const XMLCh*  XMLDateTime::getFormattedString() const
{
    return getRawData();
}

int XMLDateTime::getSign() const
{
    return 0;
}

// ---------------------------------------------------------------------------
//  Parsers
// ---------------------------------------------------------------------------

//
// [-]{CCYY-MM-DD}'T'{HH:MM:SS.MS}[TimeZone]
//
void XMLDateTime::parseDateTime()
{
    initParser();
    getDate();

    //fStart is supposed to point to 'T'
    if (fBuffer[fStart++] != DATETIME_SEPARATOR)
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_dt_missingT
                , fBuffer
                , fMemoryManager);

    getTime();
    validateDateTime();
    normalize();
    fHasTime = true;
}

//
// [-]{CCYY-MM-DD}[TimeZone]
//
void XMLDateTime::parseDate()
{
    initParser();
    getDate();
    parseTimeZone();
    validateDateTime();
    normalize();
}

void XMLDateTime::parseTime()
{
    initParser();

    // time initialize to default values
    fValue[CentYear]= YEAR_DEFAULT;
    fValue[Month]   = MONTH_DEFAULT;
    fValue[Day]     = DAY_DEFAULT;

    getTime();

    validateDateTime();
    normalize();
    fHasTime = true;
}

//
// {---DD}[TimeZone]
//  01234
//
void XMLDateTime::parseDay()
{
    initParser();

    if (fBuffer[0] != DATE_SEPARATOR ||
        fBuffer[1] != DATE_SEPARATOR ||
        fBuffer[2] != DATE_SEPARATOR  )
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_gDay_invalid
                , fBuffer
                , fMemoryManager);
    }

    //initialize values
    fValue[CentYear] = YEAR_DEFAULT;
    fValue[Month]    = MONTH_DEFAULT;
    fValue[Day]      = parseInt(fStart+3, fStart+5);

    if ( DAY_SIZE < fEnd )
    {
        int sign = findUTCSign(DAY_SIZE);
        if ( sign < 0 )
        {
            ThrowXMLwithMemMgr1(SchemaDateTimeException
                    , XMLExcepts::DateTime_gDay_invalid
                    , fBuffer
                    , fMemoryManager);
        }
        else
        {
            getTimeZone(sign);
        }
    }

    validateDateTime();
    normalize();
}

//
// {--MM--}[TimeZone]
// {--MM}[TimeZone]
//  012345
//
void XMLDateTime::parseMonth()
{
    initParser();

    if (fBuffer[0] != DATE_SEPARATOR ||
        fBuffer[1] != DATE_SEPARATOR  )
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_gMth_invalid
                , fBuffer
                , fMemoryManager);
    }

    //set constants
    fValue[CentYear] = YEAR_DEFAULT;
    fValue[Day]      = DAY_DEFAULT;
    fValue[Month]    = parseInt(2, 4);

    // REVISIT: allow both --MM and --MM-- now. 
    // need to remove the following lines to disallow --MM-- 
    // when the errata is officially in the rec. 
    fStart = 4;
    if ( fEnd >= fStart+2 && fBuffer[fStart] == DATE_SEPARATOR && fBuffer[fStart+1] == DATE_SEPARATOR ) 
    { 
        fStart += 2; 
    } 

    //
    // parse TimeZone if any
    //
    if ( fStart < fEnd )
    {
        int sign = findUTCSign(fStart);
        if ( sign < 0 )
        {
            ThrowXMLwithMemMgr1(SchemaDateTimeException
                    , XMLExcepts::DateTime_gMth_invalid
                    , fBuffer
                    , fMemoryManager);
        }
        else
        {
            getTimeZone(sign);
        }
    }

    validateDateTime();
    normalize();
}

//
//[-]{CCYY}[TimeZone]
// 0  1234
//
void XMLDateTime::parseYear()
{
    initParser();

    // skip the first '-' and search for timezone
    //
    int sign = findUTCSign((fBuffer[0] == chDash) ? 1 : 0);

    if (sign == NOT_FOUND)
    {
        fValue[CentYear] = parseIntYear(fEnd);
    }
    else
    {
        fValue[CentYear] = parseIntYear(sign);
        getTimeZone(sign);
    }

    //initialize values
    fValue[Month] = MONTH_DEFAULT;
    fValue[Day]   = DAY_DEFAULT;   //java is 1

    validateDateTime();
    normalize();
}

//
//{--MM-DD}[TimeZone]
// 0123456
//
void XMLDateTime::parseMonthDay()
{
    initParser();

    if (fBuffer[0] != DATE_SEPARATOR ||
        fBuffer[1] != DATE_SEPARATOR ||
        fBuffer[4] != DATE_SEPARATOR )
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_gMthDay_invalid
                , fBuffer
                , fMemoryManager);
    }


    //initialize
    fValue[CentYear] = YEAR_DEFAULT;
    fValue[Month]    = parseInt(2, 4);	
    fValue[Day]      = parseInt(5, 7);

    if ( MONTHDAY_SIZE < fEnd )
    {
        int sign = findUTCSign(MONTHDAY_SIZE);
        if ( sign<0 )
        {
            ThrowXMLwithMemMgr1(SchemaDateTimeException
                    , XMLExcepts::DateTime_gMthDay_invalid
                    , fBuffer
                    , fMemoryManager);
        }
        else
        {
            getTimeZone(sign);
        }
    }

    validateDateTime();
    normalize();
}

void XMLDateTime::parseYearMonth()
{
    initParser();

    // get date
    getYearMonth();
    fValue[Day] = DAY_DEFAULT;
    parseTimeZone();

    validateDateTime();
    normalize();
}

//
//PnYn MnDTnH nMnS: -P1Y2M3DT10H30M
//
// [-]{'P'{[n'Y'][n'M'][n'D']['T'][n'H'][n'M'][n'S']}}
//
//  Note: the n above shall be >= 0
//        if no time element found, 'T' shall be absent
//
void XMLDateTime::parseDuration()
{
    initParser();

    // must start with '-' or 'P'
    //
    XMLCh c = fBuffer[fStart++];
    if ( (c != DURATION_STARTER) &&
         (c != chDash)            )
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_dur_Start_dashP
                , fBuffer
                , fMemoryManager);
    }

    // 'P' must ALWAYS be present in either case
    if ( (c == chDash) &&
         (fBuffer[fStart++]!= DURATION_STARTER ))
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_dur_noP
                , fBuffer
                , fMemoryManager);
    }

    // java code
    //date[utc]=(c=='-')?'-':0;
    //fValue[utc] = UTC_STD;
    fValue[utc] = (fBuffer[0] == chDash? UTC_NEG : UTC_STD);

    int negate = ( fBuffer[0] == chDash ? -1 : 1);

    //
    // No negative value is allowed after 'P'
    //
    // eg P-1234, invalid
    //
    if (indexOf(fStart, fEnd, chDash) != NOT_FOUND)
    {
        ThrowXMLwithMemMgr1(SchemaDateTimeException
                , XMLExcepts::DateTime_dur_DashNotFirst
                , fBuffer
                , fMemoryManager);
    }

    //at least one number and designator must be seen after P
    bool designator = false;

    int endDate = indexOf(fStart, fEnd, DATETIME_SEPARATOR);
    if ( endDate == NOT_FOUND )
    {
        endDate = fEnd;  // 'T' absent
    }