igxmlscanner2.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 1,601 行 · 第 1/5 页

                        ( 

                         XMLErrs::AttrAlreadyUsedInSTag
                        , curAttr->getName()
                        , elemDecl->getFullName()
                        );
                    }
                }
            }
            else
            {
                if (fAttrDupChkRegistry->containsKey((void*)suffPtr, uriId))
                {
                    emitError
                        ( 
                        XMLErrs::AttrAlreadyUsedInSTag
                        , curAttr->getName()
                        , elemDecl->getFullName()
                        );
                }
            }  
        }
        
        if (retCount >= curAttListSize)
        {
            curAttr = new (fMemoryManager) XMLAttr
            (
                uriId
                , suffPtr
                , prefPtr
                , normBuf.getRawBuffer()
                , attType
                , true
                , fMemoryManager
            );
            toFill.addElement(curAttr);
        }
        else
        {
            curAttr = toFill.elementAt(retCount);
            curAttr->set
            (
                uriId
                , suffPtr
                , prefPtr
                , normBuf.getRawBuffer()
                , attType
            );
            curAttr->setSpecified(true);
        }

        if (toUseHashTable)
        {
            fAttrDupChkRegistry->put((void*)suffPtr, uriId, curAttr);
        }

        if(psviAttr)
            psviAttr->setValue(curAttr->getValue());
            
        // Bump the count of attrs in the list
        retCount++;
    }

    //  Now, if there are any attributes declared by this element, let's
    //  go through them and make sure that any required ones are provided,
    //  and fault in any fixed ones and defaulted ones that are not provided
    //  literally.
    if (hasDefs)
    {
        // Check after all specified attrs are scanned
        // (1) report error for REQUIRED attrs that are missing (V_TAGc)
        // (2) add default attrs if missing (FIXED and NOT_FIXED)


        XMLAttDefList &attDefList = getAttDefList(fGrammarType == Grammar::SchemaGrammarType, currType, elemDecl);

        for(unsigned int i=0; i<attDefList.getAttDefCount(); i++)
        {
            // Get the current att def, for convenience and its def type
            const XMLAttDef *curDef = &attDefList.getAttDef(i);
            const XMLAttDef::DefAttTypes defType = curDef->getDefaultType();
            unsigned int *attCountPtr = fAttDefRegistry->get((void *)curDef);
            if (!attCountPtr || *attCountPtr < fElemCount)
            { // did not occur
                // note that since there is no attribute information
                // item present, there is no PSVI infoset to augment here *except*
                // that the element is invalid

                //the attribute is not provided
                if (fValidate)
                {
                    // If we are validating and its required, then an error
                    if ((defType == XMLAttDef::Required) ||
                        (defType == XMLAttDef::Required_And_Fixed)  )

                    {
                        fValidator->emitError
                        (
                            XMLValid::RequiredAttrNotProvided
                            , curDef->getFullName()
                        );
                        if(fGrammarType == Grammar::SchemaGrammarType) 
                        {
                            fPSVIElemContext.fErrorOccurred = true;
                        }
                    }
                    else if ((defType == XMLAttDef::Default) ||
                            (defType == XMLAttDef::Fixed)  )
                    {
                        if (fStandalone && curDef->isExternal())
                        {
                            // XML 1.0 Section 2.9
                            // Document is standalone, so attributes must not be defaulted.
                            fValidator->emitError(XMLValid::NoDefAttForStandalone, curDef->getFullName(), elemDecl->getFullName());                                                        
                            if(fGrammarType == Grammar::SchemaGrammarType)
                            {
                                fPSVIElemContext.fErrorOccurred = true;
                            }
                        }
                    }
                }

                //  Fault in the value if needed, and bump the att count.
                if ((defType == XMLAttDef::Default)
                    ||  (defType == XMLAttDef::Fixed))
                {
                    // Let the validator pass judgement on the attribute value
                    if (fValidate)
                    {
                        fValidator->validateAttrValue
                        (
                            curDef
                            , curDef->getValue()
                            , false
                            , elemDecl
                        );
                    }

                    XMLAttr* curAtt;
                    if (retCount >= curAttListSize)
                    {
                        curAtt = new (fMemoryManager) XMLAttr(fMemoryManager);
                        fValidator->faultInAttr(*curAtt, *curDef);
                        fAttrList->addElement(curAtt);
                    }
                    else
                    {
                        curAtt = fAttrList->elementAt(retCount);
                        fValidator->faultInAttr(*curAtt, *curDef);
                    }

                    if (fGrammarType == Grammar::DTDGrammarType)
                    {
                        //  Map the new attribute's prefix to a URI id and store
                        //  that in the attribute object.
                        curAtt->setURIId
                        (
                            resolvePrefix(curAtt->getPrefix(), ElemStack::Mode_Attribute)
                        );
                    }

                    // Indicate it was not explicitly specified and bump count
                    curAtt->setSpecified(false);
                    retCount++;
                    if(getPSVIHandler() && fGrammarType == Grammar::SchemaGrammarType)
                    {
                        QName *attName = ((SchemaAttDef *)curDef)->getAttName();
                        PSVIAttribute *defAttrToFill = fPSVIAttrList->getPSVIAttributeToFill
                        (
                            attName->getLocalPart(), fURIStringPool->getValueForId( attName->getURI())
                        );
                        XSAttributeDeclaration *defAttrDecl = (XSAttributeDeclaration *)fModel->getXSObject((void *)curDef);
                        DatatypeValidator * attrDataType = ((SchemaAttDef *)curDef)->getDatatypeValidator();
                        XSSimpleTypeDefinition *defAttrType = 
                            (XSSimpleTypeDefinition*)fModel->getXSObject(attrDataType);
                        // would have occurred during validation of default value
                        if(((SchemaValidator *)fValidator)->getErrorOccurred())
                        {
                            defAttrToFill->reset(
                                fRootElemName
                                , PSVIItem::VALIDITY_INVALID
                                , PSVIItem::VALIDATION_FULL
                                , defAttrType
                                , 0
                                , curDef->getValue()
                                , true 
                                , defAttrDecl
                                , 0
                            );
                        }
                        else
                        {
                            XSSimpleTypeDefinition *defAttrMemberType = 0;
                            if(defAttrType->getVariety() == XSSimpleTypeDefinition::VARIETY_UNION)
                            {
                                defAttrMemberType = (XSSimpleTypeDefinition *)fModel->getXSObject
                                (
                                    ((SchemaValidator*)fValidator)->getMostRecentAttrValidator()
                                );
                            }
                            defAttrToFill->reset(
                                fRootElemName
                                , PSVIItem::VALIDITY_VALID
                                , PSVIItem::VALIDATION_FULL
                                , defAttrType
                                , defAttrMemberType
                                , curDef->getValue()
                                , true
                                , defAttrDecl
                                , (defAttrMemberType)?((SchemaValidator *)fValidator)->getMostRecentAttrValidator():attrDataType
                            );
                        } 
                        defAttrToFill->setValue(curDef->getValue());
                    }
                }
            }
            else if(attCountPtr)
            {
                //attribute is provided
                // (schema) report error for PROHIBITED attrs that are present (V_TAGc)
                if (defType == XMLAttDef::Prohibited && fValidate) 
                {
                    fValidator->emitError
                    (
                        XMLValid::ProhibitedAttributePresent
                        , curDef->getFullName()
                    );
                    if(fGrammarType == Grammar::SchemaGrammarType) 
                    {
                        fPSVIElemContext.fErrorOccurred = true;
                        if (getPSVIHandler())
                        {
                            QName *attQName = ((SchemaAttDef *)curDef)->getAttName();
                            // bad luck...
                            PSVIAttribute *prohibitedAttr = fPSVIAttrList->getAttributePSVIByName
                            (
                                attQName->getLocalPart(), 
                                fURIStringPool->getValueForId(attQName->getURI())
                            );
                            prohibitedAttr->updateValidity(PSVIItem::VALIDITY_INVALID);
                        }
                    }
                }
            }
        }
    }
    return retCount;
}


//  This method will take a raw attribute value and normalize it according to
//  the rules of the attribute type. It will put the resulting value into the
//  passed buffer.
//
//  This code assumes that escaped characters in the original value (via char
//  refs) are prefixed by a 0xFFFF character. This is because some characters
//  are legal if escaped only. And some escape chars are not subject to
//  normalization rules.
bool IGXMLScanner::normalizeAttValue( const   XMLAttDef* const    attDef
                                      , const XMLCh* const        attName
                                      , const XMLCh* const        value
                                      ,       XMLBuffer&          toFill)
{
    // A simple state value for a whitespace processing state machine
    enum States
    {
        InWhitespace
        , InContent
    };

    // Get the type and name
    const XMLAttDef::AttTypes type = (attDef)
                    ?attDef->getType()
                    :XMLAttDef::CData;

    // Assume its going to go fine, and empty the target buffer in preperation
    bool retVal = true;
    toFill.reset();

    // Get attribute def - to check to see if it's declared externally or not
    bool  isAttExternal = (attDef)
                ?attDef->isExternal()
                :false;

    //  Loop through the chars of the source value and normalize it according
    //  to the type.
    States curState = InContent;
    bool escaped;
    bool firstNonWS = false;
    XMLCh nextCh;
    const XMLCh* srcPtr = value;
    while (*srcPtr)
    {
        //  Get the next character from the source. We have to watch for
        //  escaped characters (which are indicated by a 0xFFFF value followed
        //  by the char that was escaped.)
        nextCh = *srcPtr;
        escaped = (nextCh == 0xFFFF);
        if (escaped)
            nextCh = *++srcPtr;

        //  If its not escaped, then make sure its not a < character, which is
        //  not allowed in attribute values.
        if (!escaped && (*srcPtr == chOpenAngle))
        {
            emitError(XMLErrs::BracketInAttrValue, attName);
            retVal = false;
        }

        if (type == XMLAttDef::CData || type > XMLAttDef::Notation)
        {
            if (!escaped)
            {
                if ((nextCh == 0x09) || (nextCh == 0x0A) || (nextCh == 0x0D))
                {
                    // Check Validity Constraint for Standalone document declaration
                    // XML 1.0, Section 2.9
                    if (fStandalone && fValidate && isAttExternal)
                    {
                         // Can't have a standalone document declaration of "yes" if  attribute
                         // values are subject to normalisation