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XMLDateTime.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  * Copyright (c) 2001 The Apache Software Foundation.  All rights
00005  * reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  *
00014  * 2. Redistributions in binary form must reproduce the above copyright
00015  *    notice, this list of conditions and the following disclaimer in
00016  *    the documentation and/or other materials provided with the
00017  *    distribution.
00018  *
00019  * 3. The end-user documentation included with the redistribution,
00020  *    if any, must include the following acknowledgment:
00021  *       "This product includes software developed by the
00022  *        Apache Software Foundation (http://www.apache.org/)."
00023  *    Alternately, this acknowledgment may appear in the software itself,
00024  *    if and wherever such third-party acknowledgments normally appear.
00025  *
00026  * 4. The names "Xerces" and "Apache Software Foundation" must
00027  *    not be used to endorse or promote products derived from this
00028  *    software without prior written permission. For written
00029  *    permission, please contact apache\@apache.org.
00030  *
00031  * 5. Products derived from this software may not be called "Apache",
00032  *    nor may "Apache" appear in their name, without prior written
00033  *    permission of the Apache Software Foundation.
00034  *
00035  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00036  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00037  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00038  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
00039  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00040  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00041  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00042  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00043  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00044  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00045  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00046  * SUCH DAMAGE.
00047  * ====================================================================
00048  *
00049  * This software consists of voluntary contributions made by many
00050  * individuals on behalf of the Apache Software Foundation, and was
00051  * originally based on software copyright (c) 2001, International
00052  * Business Machines, Inc., http://www.ibm.com .  For more information
00053  * on the Apache Software Foundation, please see
00054  * <http://www.apache.org/>.
00055  */
00056 
00057 /*
00058  * $Id: XMLDateTime.hpp,v 1.4 2003/02/02 23:54:43 peiyongz Exp $
00059  * $Log: XMLDateTime.hpp,v $
00060  * Revision 1.4  2003/02/02 23:54:43  peiyongz
00061  * getFormattedString() added to return original and converted value.
00062  *
00063  * Revision 1.3  2003/01/30 21:55:22  tng
00064  * Performance: create getRawData which is similar to toString but return the internal data directly, user is not required to delete the returned memory.
00065  *
00066  * Revision 1.2  2002/11/04 15:22:05  tng
00067  * C++ Namespace Support.
00068  *
00069  * Revision 1.1.1.1  2002/02/01 22:22:14  peiyongz
00070  * sane_include
00071  *
00072  * Revision 1.4  2001/11/22 20:23:00  peiyongz
00073  * _declspec(dllimport) and inline warning C4273
00074  *
00075  * Revision 1.3  2001/11/12 20:36:54  peiyongz
00076  * SchemaDateTimeException defined
00077  *
00078  * Revision 1.2  2001/11/09 20:41:45  peiyongz
00079  * Fix: compilation error on Solaris and AIX.
00080  *
00081  * Revision 1.1  2001/11/07 19:16:03  peiyongz
00082  * DateTime Port
00083  *
00084  */
00085 
00086 #ifndef XML_DATETIME_HPP
00087 #define XML_DATETIME_HPP
00088 
00089 #include <xercesc/util/XercesDefs.hpp>
00090 #include <xercesc/util/XMLNumber.hpp>
00091 #include <xercesc/util/XMLString.hpp>
00092 #include <xercesc/util/XMLUniDefs.hpp>
00093 #include <xercesc/util/SchemaDateTimeException.hpp>
00094 
00095 XERCES_CPP_NAMESPACE_BEGIN
00096 
00097 class  XMLDateTime : public XMLNumber
00098 {
00099 public:
00100 
00101     // to be moved to XMLNumber
00102     enum
00103     {
00104         LESS_THAN     = -1,
00105         EQUAL         = 0,
00106         GREATER_THAN  = 1,
00107         INDETERMINATE = 2
00108     };
00109 
00110     enum valueIndex
00111     {
00112         CentYear   = 0,
00113         Month      ,
00114         Day        ,
00115         Hour       ,
00116         Minute     ,
00117         Second     ,
00118         MiliSecond ,
00119         utc        ,
00120         TOTAL_SIZE
00121     };
00122 
00123     enum utcType
00124     {
00125         UTC_UNKNOWN = 0,
00126         UTC_STD        ,          // set in parse() or normalize()
00127         UTC_POS        ,          // set in parse()
00128         UTC_NEG                   // set in parse()
00129     };
00130 
00131     // -----------------------------------------------------------------------
00132     // ctors and dtor
00133     // -----------------------------------------------------------------------
00134 
00135     XMLDateTime();
00136 
00137     XMLDateTime(const XMLCh* const);
00138 
00139     ~XMLDateTime();
00140 
00141     inline void           setBuffer(const XMLCh* const);
00142 
00143     // -----------------------------------------------------------------------
00144     // Copy ctor and Assignment operators
00145     // -----------------------------------------------------------------------
00146 
00147     XMLDateTime(const XMLDateTime&);
00148 
00149     XMLDateTime&          operator=(const XMLDateTime&);
00150 
00151     // -----------------------------------------------------------------------
00152     // Implementation of Abstract Interface
00153     // -----------------------------------------------------------------------
00154 
00155     virtual XMLCh*        toString() const;
00156     
00157     virtual XMLCh*        getRawData() const;
00158 
00159     virtual const XMLCh*  getFormattedString() const;
00160 
00161     virtual int           getSign() const;
00162 
00163     // -----------------------------------------------------------------------
00164     // parsers
00165     // -----------------------------------------------------------------------
00166 
00167     void                  parseDateTime();       //DateTime
00168 
00169     void                  parseDate();           //Date
00170 
00171     void                  parseTime();           //Time
00172 
00173     void                  parseDay();            //gDay
00174 
00175     void                  parseMonth();          //gMonth
00176 
00177     void                  parseYear();           //gYear
00178 
00179     void                  parseMonthDay();       //gMonthDay
00180 
00181     void                  parseYearMonth();      //gYearMonth
00182 
00183     void                  parseDuration();       //duration
00184 
00185     // -----------------------------------------------------------------------
00186     // Comparison
00187     // -----------------------------------------------------------------------
00188     static int            compare(const XMLDateTime* const
00189                                 , const XMLDateTime* const);
00190 
00191     static int            compare(const XMLDateTime* const
00192                                 , const XMLDateTime* const
00193                                 , bool                    );
00194 
00195     static int            compareOrder(const XMLDateTime* const
00196                                      , const XMLDateTime* const);
00197 
00198 private:
00199 
00200     // -----------------------------------------------------------------------
00201     // Constant data
00202     // -----------------------------------------------------------------------
00203     //
00204     enum timezoneIndex
00205     {
00206         hh = 0,
00207         mm ,
00208         TIMEZONE_ARRAYSIZE
00209     };
00210 
00211     // -----------------------------------------------------------------------
00212     // Comparison
00213     // -----------------------------------------------------------------------
00214     static int            compareResult(short
00215                                       , short
00216                                       , bool);
00217 
00218     static void           addDuration(XMLDateTime*             pDuration
00219                                     , const XMLDateTime* const pBaseDate
00220                                     , int                      index);
00221 
00222 
00223     static int            compareResult(const XMLDateTime* const
00224                                       , const XMLDateTime* const
00225                                       , bool
00226                                       , int);
00227 
00228     static inline int     getRetVal(int, int);
00229 
00230     // -----------------------------------------------------------------------
00231     // helper
00232     // -----------------------------------------------------------------------
00233 
00234     inline  void          reset();
00235 
00236     inline  void          assertBuffer()               const;
00237 
00238     inline  void          copy(const XMLDateTime&);
00239 
00240     // allow multiple parsing
00241     inline  void          initParser();
00242 
00243     inline  bool          isNormalized()               const;
00244 
00245     // -----------------------------------------------------------------------
00246     // scaners
00247     // -----------------------------------------------------------------------
00248 
00249     void                  getDate();
00250 
00251     void                  getTime();
00252 
00253     void                  getYearMonth();
00254 
00255     void                  getTimeZone(const int);
00256 
00257     void                  parseTimeZone();
00258 
00259     // -----------------------------------------------------------------------
00260     // locator and converter
00261     // -----------------------------------------------------------------------
00262 
00263     int                   findUTCSign(const int start);
00264 
00265     int                   indexOf(const int start
00266                                 , const int end
00267                                 , const XMLCh ch)     const;
00268 
00269     int                   parseInt(const int start
00270                                  , const int end)     const;
00271 
00272     int                   parseIntYear(const int end) const;
00273 
00274     // -----------------------------------------------------------------------
00275     // validator and normalizer
00276     // -----------------------------------------------------------------------
00277 
00278     void                  validateDateTime()          const;
00279 
00280     void                  normalize();
00281 
00282     // -----------------------------------------------------------------------
00283     // Unimplemented operator ==
00284     // -----------------------------------------------------------------------
00285     bool operator==(const XMLDateTime& toCompare) const;
00286 
00287 
00288     // -----------------------------------------------------------------------
00289     //  Private data members
00290     //
00291     //     fValue[]
00292     //          object representation of date time.
00293     //
00294     //     fTimeZone[]
00295     //          temporary storage for normalization
00296     //
00297     //     fStart, fEnd
00298     //          pointers to the portion of fBuffer being parsed
00299     //
00300     //     fBuffer
00301     //          raw data to be parsed, own it.
00302     //
00303     // -----------------------------------------------------------------------
00304 
00305     int          fValue[TOTAL_SIZE];
00306     int          fTimeZone[TIMEZONE_ARRAYSIZE];
00307     int          fStart;
00308     int          fEnd;
00309 
00310     XMLCh*       fBuffer;
00311 
00312 };
00313 
00314 inline void XMLDateTime::setBuffer(const XMLCh* const aString)
00315 {
00316     reset();
00317     fBuffer = XMLString::replicate(aString);
00318     fEnd    = XMLString::stringLen(fBuffer);
00319 
00320 }
00321 
00322 inline void XMLDateTime::reset()
00323 {
00324     for ( int i=0; i < TOTAL_SIZE; i++ )
00325         fValue[i] = 0;
00326 
00327     fTimeZone[hh] = fTimeZone[mm] = 0;
00328     fStart = fEnd = 0;
00329 
00330     if (fBuffer)
00331     {
00332         delete[] fBuffer;
00333         fBuffer = 0;
00334     }
00335 
00336 }
00337 
00338 inline void XMLDateTime::copy(const XMLDateTime& rhs)
00339 {
00340     for ( int i = 0; i < TOTAL_SIZE; i++ )
00341         fValue[i] = rhs.fValue[i];
00342 
00343     fTimeZone[hh] = rhs.fTimeZone[hh];
00344     fTimeZone[mm] = rhs.fTimeZone[mm];
00345     fStart = rhs.fStart;
00346     fEnd   = rhs.fEnd;
00347 
00348     if (fBuffer)
00349     {
00350         delete[] fBuffer;
00351         fBuffer = 0;
00352     }
00353 
00354     if (rhs.fBuffer)
00355         fBuffer = XMLString::replicate(rhs.fBuffer);
00356 
00357 }
00358 
00359 inline void XMLDateTime::assertBuffer() const
00360 {
00361     if ( ( !fBuffer )            ||
00362          ( fBuffer[0] == chNull ) )
00363     {
00364         ThrowXML(SchemaDateTimeException
00365                , XMLExcepts::DateTime_Assert_Buffer_Fail);
00366     }
00367 
00368 }
00369 
00370 inline void XMLDateTime::initParser()
00371 {
00372     assertBuffer();
00373     fStart = 0;   // to ensure scan from the very first beginning
00374                   // in case the pointer is updated accidentally by someone else.
00375 }
00376 
00377 inline bool XMLDateTime::isNormalized() const
00378 {
00379     return ( fValue[utc] == UTC_STD ? true : false );
00380 }
00381 
00382 inline int XMLDateTime::getRetVal(int c1, int c2)
00383 {
00384     if ((c1 == LESS_THAN    && c2 == GREATER_THAN) ||
00385         (c1 == GREATER_THAN && c2 == LESS_THAN)      )
00386     {
00387         return INDETERMINATE;
00388     }
00389 
00390     return ( c1 != INDETERMINATE ) ? c1 : c2;
00391 }
00392 
00393 XERCES_CPP_NAMESPACE_END
00394 
00395 #endif


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