vecattributesimpl.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 237 行

/*
 * Copyright 1999-2001,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Log: VecAttributesImpl.cpp,v $
 * Revision 1.6  2004/09/08 13:56:13  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.5  2003/12/17 00:18:34  cargilld
 * Update to memory management so that the static memory manager (one used to call Initialize) is only for static data.
 *
 * Revision 1.4  2003/05/16 21:36:57  knoaman
 * Memory manager implementation: Modify constructors to pass in the memory manager.
 *
 * Revision 1.3  2002/11/04 14:58:18  tng
 * C++ Namespace Support.
 *
 * Revision 1.2  2002/09/24 20:02:20  tng
 * Performance: use XMLString::equals instead of XMLString::compareString
 *
 * Revision 1.1.1.1  2002/02/01 22:21:58  peiyongz
 * sane_include
 *
 * Revision 1.7  2001/10/05 17:57:39  peiyongz
 * [BUG# 3831]: -1 returned from getIndex() needs to be checked
 *
 * Revision 1.6  2001/05/11 13:26:16  tng
 * Copyright update.
 *
 * Revision 1.5  2001/03/21 21:56:04  tng
 * Schema: Add Schema Grammar, Schema Validator, and split the DTDValidator into DTDValidator, DTDScanner, and DTDGrammar.
 *
 * Revision 1.4  2001/02/26 19:44:14  tng
 * Schema: add utility class QName, by Pei Yong Zhang.
 *
 * Revision 1.3  2000/11/02 01:14:07  andyh
 * SAX bug fix:  Attribute lists were throwing exceptions rather than returning
 * null when an attribute could not be found by name.  Fixed by Tinny Ng.
 *
 * Revision 1.2  2000/08/09 22:11:16  jpolast
 * changes to allow const instances of the sax2
 * Attributes class.
 *
 * Revision 1.1  2000/08/02 18:09:14  jpolast
 * initial checkin: attributes vector needed for
 * Attributes class as defined by sax2 spec
 *
 *
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/util/Janitor.hpp>
#include <xercesc/internal/VecAttributesImpl.hpp>

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  Constructors and Destructor
// ---------------------------------------------------------------------------
VecAttributesImpl::VecAttributesImpl() :

    fAdopt(false)
    , fCount(0)
    , fVector(0)
    , fScanner(0)
{
}

VecAttributesImpl::~VecAttributesImpl()
{
    //
    //  Note that some compilers can't deal with the fact that the pointer
    //  is to a const object, so we have to cast off the const'ness here!
    //
    if (fAdopt)
        delete (RefVectorOf<XMLAttr>*)fVector;
}


// ---------------------------------------------------------------------------
//  Implementation of the attribute list interface
// ---------------------------------------------------------------------------
unsigned int VecAttributesImpl::getLength() const
{
    return fCount;
}

const XMLCh* VecAttributesImpl::getURI(const unsigned int index) const
{
    // since this func really needs to be const, like the rest, not sure how we
    // make it const and re-use the fURIBuffer member variable.  we're currently
    // creating a buffer each time you need a URI.  there has to be a better
    // way to do this...

    //XMLBuffer tempBuf;
    if (index >= fCount) {


        return 0;
     }
    //fValidator->getURIText(fVector->elementAt(index)->getURIId(), tempBuf) ;
    //return tempBuf.getRawBuffer() ;
    return fScanner->getURIText(fVector->elementAt(index)->getURIId());
}

const XMLCh* VecAttributesImpl::getLocalName(const unsigned int index) const
{
    if (index >= fCount) {
        return 0;
     }
    return fVector->elementAt(index)->getName();
}

const XMLCh* VecAttributesImpl::getQName(const unsigned int index) const
{
    if (index >= fCount) {
        return 0;
     }
    return fVector->elementAt(index)->getQName();
}

const XMLCh* VecAttributesImpl::getType(const unsigned int index) const
{
    if (index >= fCount) {
        return 0;
     }
    return XMLAttDef::getAttTypeString(fVector->elementAt(index)->getType(), fVector->getMemoryManager());
}

const XMLCh* VecAttributesImpl::getValue(const unsigned int index) const
{
    if (index >= fCount) {
        return 0;
     }
    return fVector->elementAt(index)->getValue();
}

int VecAttributesImpl::getIndex(const XMLCh* const uri, const XMLCh* const localPart ) const
{
    //
    //  Search the vector for the attribute with the given name and return
    //  its type.
    //
    XMLBuffer uriBuffer(1023, fVector->getMemoryManager()) ;
    for (unsigned int index = 0; index < fCount; index++)
    {
        const XMLAttr* curElem = fVector->elementAt(index);

        fScanner->getURIText(curElem->getURIId(), uriBuffer) ;

        if ( (XMLString::equals(curElem->getName(), localPart)) &&
             (XMLString::equals(uriBuffer.getRawBuffer(), uri)) )
            return index ;
    }
    return -1;
}

int VecAttributesImpl::getIndex(const XMLCh* const qName ) const
{
    //
    //  Search the vector for the attribute with the given name and return
    //  its type.
    //
    for (unsigned int index = 0; index < fCount; index++)
    {
        const XMLAttr* curElem = fVector->elementAt(index);

        if (XMLString::equals(curElem->getQName(), qName))
            return index ;
    }
    return -1;
}

const XMLCh* VecAttributesImpl::getType(const XMLCh* const uri, const XMLCh* const localPart ) const
{
    int retVal = getIndex(uri, localPart);
    return ((retVal < 0) ? 0 : getType(retVal));
}

const XMLCh* VecAttributesImpl::getType(const XMLCh* const qName) const
{
    int retVal = getIndex(qName);
    return ((retVal < 0) ? 0 : getType(retVal));
}

const XMLCh* VecAttributesImpl::getValue(const XMLCh* const uri, const XMLCh* const localPart ) const
{
    int retVal = getIndex(uri, localPart);
    return ((retVal < 0) ? 0 : getValue(retVal));
}

const XMLCh* VecAttributesImpl::getValue(const XMLCh* const qName) const
{
    int retVal = getIndex(qName);
    return ((retVal < 0) ? 0 : getValue(retVal));
}

// ---------------------------------------------------------------------------
//  Setter methods
// ---------------------------------------------------------------------------
void VecAttributesImpl::setVector(const   RefVectorOf<XMLAttr>* const srcVec
                                , const unsigned int                count
                                , const XMLScanner * const        scanner
                                , const bool                        adopt)
{
    //
    //  Delete the previous vector (if any) if we are adopting. Note that some
    //  compilers can't deal with the fact that the pointer is to a const
    //  object, so we have to cast off the const'ness here!
    //
    if (fAdopt)
        delete (RefVectorOf<XMLAttr>*)fVector;

    fAdopt = adopt;
    fCount = count;
    fVector = srcVec;
    fScanner = scanner ;
}

XERCES_CPP_NAMESPACE_END