xsddomparser.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 530 行 · 第 1/2 页

/*
 * Copyright 2002,2004 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.
 */

/**
  * $Id: XSDDOMParser.cpp,v 1.14 2004/09/08 13:56:57 peiyongz Exp $
  */



// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/validators/schema/XSDDOMParser.hpp>
#include <xercesc/validators/schema/SchemaSymbols.hpp>
#include <xercesc/internal/XMLScanner.hpp>
#include <xercesc/internal/ElemStack.hpp>
#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/impl/DOMElementImpl.hpp>
#include <xercesc/dom/impl/DOMAttrImpl.hpp>
#include <xercesc/dom/impl/DOMTextImpl.hpp>
#include <xercesc/framework/XMLValidityCodes.hpp>

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  XSDDOMParser: Constructors and Destructor
// ---------------------------------------------------------------------------
XSDDOMParser::XSDDOMParser( XMLValidator* const   valToAdopt
                          , MemoryManager* const  manager
                          , XMLGrammarPool* const gramPool):
    XercesDOMParser(valToAdopt, manager, gramPool)
    , fSawFatal(false)
    , fAnnotationDepth(-1)
    , fInnerAnnotationDepth(-1)
    , fDepth(-1)
    , fUserErrorReporter(0)
    , fUserEntityHandler(0)    
    , fURIs(0)
    , fAnnotationBuf(1023, manager)

{
    fURIs = new (manager) ValueVectorOf<unsigned int>(16, manager);
    fXSDErrorReporter.setErrorReporter(this);    
    setValidationScheme(XercesDOMParser::Val_Never);
    setDoNamespaces(true);
}


XSDDOMParser::~XSDDOMParser()
{
    delete fURIs;
}


// ---------------------------------------------------------------------------
//  XSDDOMParser: Helper methods
// ---------------------------------------------------------------------------
DOMElement* XSDDOMParser::createElementNSNode(const XMLCh *namespaceURI,
                                              const XMLCh *qualifiedName)
{
    ReaderMgr::LastExtEntityInfo lastInfo;
    ((ReaderMgr*) fScanner->getLocator())->getLastExtEntityInfo(lastInfo);

    return getDocument()->createElementNS(namespaceURI, qualifiedName,
                                          lastInfo.lineNumber, lastInfo.colNumber);
}


void XSDDOMParser::startAnnotation( const XMLElementDecl&       elemDecl
                                  , const RefVectorOf<XMLAttr>& attrList
                                  , const unsigned int          attrCount)
{
    fAnnotationBuf.append(chOpenAngle);
	fAnnotationBuf.append(elemDecl.getFullName());
    fAnnotationBuf.append(chSpace);

    // attributes are a bit of a pain.  To get this right, we have to keep track
    // of the namespaces we've seen declared, then examine the namespace context
    // for other namespaces so that we can also include them.
    // optimized for simplicity and the case that not many
    // namespaces are declared on this annotation...
    fURIs->removeAllElements();
    for (unsigned int i=0; i < attrCount; i++) {

        const XMLAttr* oneAttrib = attrList.elementAt(i);
        const XMLCh* attrValue = oneAttrib->getValue();        

        if (XMLString::equals(oneAttrib->getName(), XMLUni::fgXMLNSString))
            fURIs->addElement(fScanner->getPrefixId(XMLUni::fgZeroLenString));
        else  if (!XMLString::compareNString(oneAttrib->getQName(), XMLUni::fgXMLNSColonString, 6))
            fURIs->addElement(fScanner->getPrefixId(oneAttrib->getName()));

        fAnnotationBuf.append(oneAttrib->getQName());
        fAnnotationBuf.append(chEqual);
        fAnnotationBuf.append(chDoubleQuote);
        fAnnotationBuf.append(attrValue);
        fAnnotationBuf.append(chDoubleQuote);
        fAnnotationBuf.append(chSpace);
    }

    // now we have to look through currently in-scope namespaces to see what
    // wasn't declared here
    ValueVectorOf<PrefMapElem*>* namespaceContext = fScanner->getNamespaceContext();
    for (unsigned int j=0; j < namespaceContext->size(); j++)
    {
        unsigned int prefId = namespaceContext->elementAt(j)->fPrefId;

        if (!fURIs->containsElement(prefId)) {

            const XMLCh* prefix = fScanner->getPrefixForId(prefId);

            if (XMLString::equals(prefix, XMLUni::fgZeroLenString)) {
                fAnnotationBuf.append(XMLUni::fgXMLNSString);
            }
            else  {
                fAnnotationBuf.append(XMLUni::fgXMLNSColonString);
                fAnnotationBuf.append(prefix);
            }

            fAnnotationBuf.append(chEqual);
            fAnnotationBuf.append(chDoubleQuote);
            fAnnotationBuf.append(fScanner->getURIText(namespaceContext->elementAt(j)->fURIId));
            fAnnotationBuf.append(chDoubleQuote);
            fAnnotationBuf.append(chSpace);
        }
    }

    fAnnotationBuf.append(chCloseAngle);
    fAnnotationBuf.append(chLF);
}

void XSDDOMParser::startAnnotationElement( const XMLElementDecl&       elemDecl
                                         , const RefVectorOf<XMLAttr>& attrList
                                         , const unsigned int          attrCount)
{
    fAnnotationBuf.append(chOpenAngle);
    fAnnotationBuf.append(elemDecl.getFullName());
    //fAnnotationBuf.append(chSpace);

    for(unsigned int i=0; i < attrCount; i++) {

        const XMLAttr* oneAttr = attrList.elementAt(i);
        fAnnotationBuf.append(chSpace);
        fAnnotationBuf.append(oneAttr ->getQName());
        fAnnotationBuf.append(chEqual);
        fAnnotationBuf.append(chDoubleQuote);
        fAnnotationBuf.append(oneAttr->getValue());
        fAnnotationBuf.append(chDoubleQuote);
    }

    fAnnotationBuf.append(chCloseAngle);
}

void XSDDOMParser::endAnnotationElement( const XMLElementDecl& elemDecl
                                       , bool complete)
{
    if (complete)
    {
        fAnnotationBuf.append(chLF);
        fAnnotationBuf.append(chOpenAngle);
        fAnnotationBuf.append(chForwardSlash);
        fAnnotationBuf.append(elemDecl.getFullName());
        fAnnotationBuf.append(chCloseAngle);

        // note that this is always called after endElement on <annotation>'s
        // child and before endElement on annotation.
        // hence, we must make this the child of the current
        // parent's only child.
        DOMTextImpl *node = (DOMTextImpl *)fDocument->createTextNode(fAnnotationBuf.getRawBuffer());
        fCurrentNode->appendChild(node);
        fAnnotationBuf.reset();
    }
    else      //capturing character calls
    {
        fAnnotationBuf.append(chOpenAngle);
        fAnnotationBuf.append(chForwardSlash);
        fAnnotationBuf.append(elemDecl.getFullName());
        fAnnotationBuf.append(chCloseAngle);
    }
}


// ---------------------------------------------------------------------------
//  XSDDOMParser: Setter methods
// ---------------------------------------------------------------------------
void XSDDOMParser::setUserErrorReporter(XMLErrorReporter* const errorReporter)
{
    fUserErrorReporter = errorReporter;
    fScanner->setErrorReporter(this);
}

void XSDDOMParser::setUserEntityHandler(XMLEntityHandler* const entityHandler)
{
    fUserEntityHandler = entityHandler;
    fScanner->setEntityHandler(this);
}


// ---------------------------------------------------------------------------
//  XSDDOMParser: Implementation of the XMLDocumentHandler interface
// ---------------------------------------------------------------------------
void XSDDOMParser::startElement( const XMLElementDecl&       elemDecl
                               , const unsigned int          urlId
                               , const XMLCh* const          elemPrefix
                               , const RefVectorOf<XMLAttr>& attrList
                               , const unsigned int          attrCount
                               , const bool                  isEmpty
                               , const bool                  isRoot)
{
    fDepth++;

    // while it is true that non-whitespace character data
    // may only occur in appInfo or documentation
    // elements, it's certainly legal for comments and PI's to
    // occur as children of annotation; we need
    // to account for these here.
    if (fAnnotationDepth == -1)
    {
        if (XMLString::equals(elemDecl.getBaseName(), SchemaSymbols::fgELT_ANNOTATION) &&
            XMLString::equals(getURIText(urlId), SchemaSymbols::fgURI_SCHEMAFORSCHEMA))
        {

            fAnnotationDepth = fDepth;
            startAnnotation(elemDecl, attrList, attrCount);
        } 
    }
    else if (fDepth == fAnnotationDepth+1)
    {
        fInnerAnnotationDepth = fDepth;
        startAnnotationElement(elemDecl, attrList, attrCount);
    }
    else
    {
        startAnnotationElement(elemDecl, attrList, attrCount);
        // avoid falling through; don't call startElement in this case
        return;
    }

    DOMElement *elem;
    if (urlId != fScanner->getEmptyNamespaceId())  //TagName has a prefix
    {
        if (elemPrefix && *elemPrefix)
        {
            XMLBufBid elemQName(&fBufMgr);
            elemQName.set(elemPrefix);
            elemQName.append(chColon);
            elemQName.append(elemDecl.getBaseName());
            elem = createElementNSNode(
                fScanner->getURIText(urlId), elemQName.getRawBuffer());
        }
        else {
            elem = createElementNSNode(