-
David Abram Cargill authored
git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@176317 13f79535-47bb-0310-9956-ffa450edef68
8ca09350
IGXMLScanner.cpp 119.18 KiB
/*
* 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.
*/
/*
* $Id$
*/
// ---------------------------------------------------------------------------
// Includes
// ---------------------------------------------------------------------------
#include <xercesc/internal/IGXMLScanner.hpp>
#include <xercesc/util/RuntimeException.hpp>
#include <xercesc/util/HashPtr.hpp>
#include <xercesc/util/UnexpectedEOFException.hpp>
#include <xercesc/sax/InputSource.hpp>
#include <xercesc/framework/XMLDocumentHandler.hpp>
#include <xercesc/framework/XMLEntityHandler.hpp>
#include <xercesc/framework/XMLPScanToken.hpp>
#include <xercesc/internal/EndOfEntityException.hpp>
#include <xercesc/framework/MemoryManager.hpp>
#include <xercesc/framework/XMLGrammarPool.hpp>
#include <xercesc/framework/XMLDTDDescription.hpp>
#include <xercesc/framework/psvi/PSVIHandler.hpp>
#include <xercesc/framework/psvi/PSVIAttributeList.hpp>
#include <xercesc/validators/common/GrammarResolver.hpp>
#include <xercesc/validators/DTD/DocTypeHandler.hpp>
#include <xercesc/validators/DTD/DTDScanner.hpp>
#include <xercesc/validators/DTD/DTDValidator.hpp>
#include <xercesc/validators/schema/SchemaValidator.hpp>
#include <xercesc/validators/schema/identity/IdentityConstraintHandler.hpp>
#include <xercesc/validators/schema/identity/IC_Selector.hpp>
#include <xercesc/util/OutOfMemoryException.hpp>
XERCES_CPP_NAMESPACE_BEGIN
// ---------------------------------------------------------------------------
// IGXMLScanner: Constructors and Destructor
// ---------------------------------------------------------------------------
IGXMLScanner::IGXMLScanner( XMLValidator* const valToAdopt
, GrammarResolver* const grammarResolver
, MemoryManager* const manager) :
XMLScanner(valToAdopt, grammarResolver, manager)
, fSeeXsi(false)
, fGrammarType(Grammar::UnKnown)
, fElemStateSize(16)
, fElemState(0)
, fContent(1023, manager)
, fRawAttrList(0)
, fDTDValidator(0)
, fSchemaValidator(0)
, fDTDGrammar(0)
, fICHandler(0)
, fLocationPairs(0)
, fDTDElemNonDeclPool(0)
, fSchemaElemNonDeclPool(0) , fElemCount(0)
, fAttDefRegistry(0)
, fUndeclaredAttrRegistry(0)
, fUndeclaredAttrRegistryNS(0)
, fPSVIAttrList(0)
, fModel(0)
, fPSVIElement(0)
, fErrorStack(0)
{
try
{
commonInit();
// use fDTDValidator as the default validator
if (!valToAdopt)
fValidator = fDTDValidator;
}
catch(const OutOfMemoryException&)
{
throw;
}
catch(...)
{
cleanUp();
throw;
}
}
IGXMLScanner::IGXMLScanner( XMLDocumentHandler* const docHandler
, DocTypeHandler* const docTypeHandler
, XMLEntityHandler* const entityHandler
, XMLErrorReporter* const errHandler
, XMLValidator* const valToAdopt
, GrammarResolver* const grammarResolver
, MemoryManager* const manager) :
XMLScanner(docHandler, docTypeHandler, entityHandler, errHandler, valToAdopt, grammarResolver, manager)
, fSeeXsi(false)
, fGrammarType(Grammar::UnKnown)
, fElemStateSize(16)
, fElemState(0)
, fContent(1023, manager)
, fRawAttrList(0)
, fDTDValidator(0)
, fSchemaValidator(0)
, fDTDGrammar(0)
, fICHandler(0)
, fLocationPairs(0)
, fDTDElemNonDeclPool(0)
, fSchemaElemNonDeclPool(0)
, fElemCount(0)
, fAttDefRegistry(0)
, fUndeclaredAttrRegistry(0)
, fUndeclaredAttrRegistryNS(0)
, fPSVIAttrList(0)
, fModel(0)
, fPSVIElement(0)
, fErrorStack(0)
{
try
{
commonInit();
//use fDTDValidator as the default validator
if (!valToAdopt)
fValidator = fDTDValidator;
}
catch(const OutOfMemoryException&)
{
throw; }
catch(...)
{
cleanUp();
throw;
}
}
IGXMLScanner::~IGXMLScanner()
{
cleanUp();
}
// ---------------------------------------------------------------------------
// XMLScanner: Getter methods
// ---------------------------------------------------------------------------
NameIdPool<DTDEntityDecl>* IGXMLScanner::getEntityDeclPool()
{
if(!fDTDGrammar)
return 0;
return fDTDGrammar->getEntityDeclPool();
}
const NameIdPool<DTDEntityDecl>* IGXMLScanner::getEntityDeclPool() const
{
if(!fDTDGrammar)
return 0;
return fDTDGrammar->getEntityDeclPool();
}
// ---------------------------------------------------------------------------
// IGXMLScanner: Main entry point to scan a document
// ---------------------------------------------------------------------------
void IGXMLScanner::scanDocument(const InputSource& src)
{
// Bump up the sequence id for this parser instance. This will invalidate
// any previous progressive scan tokens.
fSequenceId++;
try
{
// Reset the scanner and its plugged in stuff for a new run. This
// resets all the data structures, creates the initial reader and
// pushes it on the stack, and sets up the base document path.
scanReset(src);
// If we have a document handler, then call the start document
if (fDocHandler)
fDocHandler->startDocument();
// Scan the prolog part, which is everything before the root element
// including the DTD subsets.
scanProlog();
// If we got to the end of input, then its not a valid XML file.
// Else, go on to scan the content.
if (fReaderMgr.atEOF())
{
emitError(XMLErrs::EmptyMainEntity);
}
else
{
// Scan content, and tell it its not an external entity
if (scanContent())
{
// Do post-parse validation if required
if (fValidate)
{
// We handle ID reference semantics at this level since
// its required by XML 1.0. checkIDRefs();
// Then allow the validator to do any extra stuff it wants
// fValidator->postParseValidation();
}
// That went ok, so scan for any miscellaneous stuff
if (!fReaderMgr.atEOF())
scanMiscellaneous();
}
}
// If we have a document handler, then call the end document
if (fDocHandler)
fDocHandler->endDocument();
//cargill debug:
//fGrammarResolver->getXSModel();
// Reset the reader manager to close all files, sockets, etc...
fReaderMgr.reset();
}
// NOTE:
//
// In all of the error processing below, the emitError() call MUST come
// before the flush of the reader mgr, or it will fail because it tries
// to find out the position in the XML source of the error.
catch(const XMLErrs::Codes)
{
// This is a 'first fatal error' type exit, so reset and fall through
fReaderMgr.reset();
}
catch(const XMLValid::Codes)
{
// This is a 'first fatal error' type exit, so reset and fall through
fReaderMgr.reset();
}
catch(const XMLException& excToCatch)
{
// Emit the error and catch any user exception thrown from here. Make
// sure in all cases we flush the reader manager.
fInException = true;
try
{
if (excToCatch.getErrorType() == XMLErrorReporter::ErrType_Warning)
emitError
(
XMLErrs::XMLException_Warning
, excToCatch.getType()
, excToCatch.getMessage()
);
else if (excToCatch.getErrorType() >= XMLErrorReporter::ErrType_Fatal)
emitError
(
XMLErrs::XMLException_Fatal
, excToCatch.getType()
, excToCatch.getMessage()
);
else
emitError
(
XMLErrs::XMLException_Error
, excToCatch.getType()
, excToCatch.getMessage()
);
}
catch(const OutOfMemoryException&)
{
throw;
} catch(...)
{
// Flush the reader manager and rethrow user's error
fReaderMgr.reset();
throw;
}
// If it returned, then reset the reader manager and fall through
fReaderMgr.reset();
}
catch(const OutOfMemoryException&)
{
throw;
}
catch(...)
{
// Reset and rethrow
fReaderMgr.reset();
throw;
}
}
bool IGXMLScanner::scanNext(XMLPScanToken& token)
{
// Make sure this token is still legal
if (!isLegalToken(token))
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Scan_BadPScanToken, fMemoryManager);
// Find the next token and remember the reader id
unsigned int orgReader;
XMLTokens curToken;
bool retVal = true;
try
{
while (true)
{
// We have to handle any end of entity exceptions that happen here.
// We could be at the end of X nested entities, each of which will
// generate an end of entity exception as we try to move forward.
try
{
curToken = senseNextToken(orgReader);
break;
}
catch(const EndOfEntityException& toCatch)
{
// Send an end of entity reference event
if (fDocHandler)
fDocHandler->endEntityReference(toCatch.getEntity());
}
}
if (curToken == Token_CharData)
{
scanCharData(fCDataBuf);
}
else if (curToken == Token_EOF)
{
if (!fElemStack.isEmpty())
{
const ElemStack::StackElem* topElem = fElemStack.popTop();
emitError
(
XMLErrs::EndedWithTagsOnStack
, topElem->fThisElement->getFullName()
);
}
retVal = false;
}
else
{
// Its some sort of markup
bool gotData = true;
switch(curToken)
{
case Token_CData :
// Make sure we are within content
if (fElemStack.isEmpty())
emitError(XMLErrs::CDATAOutsideOfContent);
scanCDSection();
break;
case Token_Comment :
scanComment();
break;
case Token_EndTag :
scanEndTag(gotData);
break;
case Token_PI :
scanPI();
break;
case Token_StartTag :
if (fDoNamespaces)
scanStartTagNS(gotData);
else
scanStartTag(gotData);
break;
default :
fReaderMgr.skipToChar(chOpenAngle);
break;
}
if (orgReader != fReaderMgr.getCurrentReaderNum())
emitError(XMLErrs::PartialMarkupInEntity);
// If we hit the end, then do the miscellaneous part
if (!gotData)
{
// Do post-parse validation if required
if (fValidate)
{
// We handle ID reference semantics at this level since
// its required by XML 1.0.
checkIDRefs();
// Then allow the validator to do any extra stuff it wants
// fValidator->postParseValidation();
}
// That went ok, so scan for any miscellaneous stuff
scanMiscellaneous();
if (toCheckIdentityConstraint())
fICHandler->endDocument();
if (fDocHandler)
fDocHandler->endDocument();
}
}
}
// NOTE:
// // In all of the error processing below, the emitError() call MUST come
// before the flush of the reader mgr, or it will fail because it tries
// to find out the position in the XML source of the error.
catch(const XMLErrs::Codes)
{
// This is a 'first failure' exception, so reset and return failure
fReaderMgr.reset();
return false;
}
catch(const XMLValid::Codes)
{
// This is a 'first fatal error' type exit, so reset and reuturn failure
fReaderMgr.reset();
return false;
}
catch(const XMLException& excToCatch)
{
// Emit the error and catch any user exception thrown from here. Make
// sure in all cases we flush the reader manager.
fInException = true;
try
{
if (excToCatch.getErrorType() == XMLErrorReporter::ErrType_Warning)
emitError
(
XMLErrs::XMLException_Warning
, excToCatch.getType()
, excToCatch.getMessage()
);
else if (excToCatch.getErrorType() >= XMLErrorReporter::ErrType_Fatal)
emitError
(
XMLErrs::XMLException_Fatal
, excToCatch.getType()
, excToCatch.getMessage()
);
else
emitError
(
XMLErrs::XMLException_Error
, excToCatch.getType()
, excToCatch.getMessage()
);
}
catch(const OutOfMemoryException&)
{
throw;
}
catch(...)
{
// Reset and rethrow user error
fReaderMgr.reset();
throw;
}
// Reset and return failure
fReaderMgr.reset();
return false;
}
catch(const OutOfMemoryException&)
{
throw;
}
catch(...)
{
// Reset and rethrow original error
fReaderMgr.reset();
throw;
}
// If we hit the end, then flush the reader manager
if (!retVal)
fReaderMgr.reset();
return retVal;
}
// ---------------------------------------------------------------------------
// IGXMLScanner: Private helper methods. Most of these are implemented in
// IGXMLScanner2.Cpp.
// ---------------------------------------------------------------------------
// This method handles the common initialization, to avoid having to do
// it redundantly in multiple constructors.
void IGXMLScanner::commonInit()
{
// Create the element state array
fElemState = (unsigned int*) fMemoryManager->allocate
(
fElemStateSize * sizeof(unsigned int)
); //new unsigned int[fElemStateSize];
// And we need one for the raw attribute scan. This just stores key/
// value string pairs (prior to any processing.)
fRawAttrList = new (fMemoryManager) RefVectorOf<KVStringPair>(32, true, fMemoryManager);
// Create the Validator and init them
fDTDValidator = new (fMemoryManager) DTDValidator();
initValidator(fDTDValidator);
fSchemaValidator = new (fMemoryManager) SchemaValidator(0, fMemoryManager);
initValidator(fSchemaValidator);
// Create IdentityConstraint info
fICHandler = new (fMemoryManager) IdentityConstraintHandler(this, fMemoryManager);
// Create schemaLocation pair info
fLocationPairs = new (fMemoryManager) ValueVectorOf<XMLCh*>(8, fMemoryManager);
// create pools for undeclared elements
fDTDElemNonDeclPool = new (fMemoryManager) NameIdPool<DTDElementDecl>(29, 128, fMemoryManager);
fSchemaElemNonDeclPool = new (fMemoryManager) RefHash3KeysIdPool<SchemaElementDecl>(29, true, 128, fMemoryManager);
fAttDefRegistry = new (fMemoryManager) RefHashTableOf<unsigned int>
(
131, false, new (fMemoryManager)HashPtr(), fMemoryManager
);
fUndeclaredAttrRegistry = new (fMemoryManager) RefHashTableOf<unsigned int>
(
7, false, new (fMemoryManager)HashXMLCh(), fMemoryManager
);
fUndeclaredAttrRegistryNS = new (fMemoryManager) RefHash2KeysTableOf<unsigned int>
(
7, false, new (fMemoryManager)HashXMLCh(), fMemoryManager
);
fPSVIAttrList = new (fMemoryManager) PSVIAttributeList(fMemoryManager);
}
void IGXMLScanner::cleanUp()
{
fMemoryManager->deallocate(fElemState); //delete [] fElemState;
delete fRawAttrList;
delete fDTDValidator;
delete fSchemaValidator;
delete fICHandler;
delete fLocationPairs;
delete fDTDElemNonDeclPool;
delete fSchemaElemNonDeclPool;
delete fAttDefRegistry;
delete fUndeclaredAttrRegistry; delete fUndeclaredAttrRegistryNS;
delete fPSVIAttrList;
delete fPSVIElement;
delete fErrorStack;
}
// ---------------------------------------------------------------------------
// IGXMLScanner: Private scanning methods
// ---------------------------------------------------------------------------
// This method is called from scanStartTag() to handle the very raw initial
// scan of the attributes. It just fills in the passed collection with
// key/value pairs for each attribute. No processing is done on them at all.
unsigned int
IGXMLScanner::rawAttrScan(const XMLCh* const elemName
, RefVectorOf<KVStringPair>& toFill
, bool& isEmpty)
{
// Keep up with how many attributes we've seen so far, and how many
// elements are available in the vector. This way we can reuse old
// elements until we run out and then expand it.
unsigned int attCount = 0;
unsigned int curVecSize = toFill.size();
// Assume it is not empty
isEmpty = false;
// We loop until we either see a /> or >, handling key/value pairs util
// we get there. We place them in the passed vector, which we will expand
// as required to hold them.
while (true)
{
// Get the next character, which should be non-space
XMLCh nextCh = fReaderMgr.peekNextChar();
// If the next character is not a slash or closed angle bracket,
// then it must be whitespace, since whitespace is required
// between the end of the last attribute and the name of the next
// one.
//
if (attCount)
{
if ((nextCh != chForwardSlash) && (nextCh != chCloseAngle))
{
if (fReaderMgr.getCurrentReader()->isWhitespace(nextCh))
{
// Ok, skip by them and get another char
fReaderMgr.getNextChar();
fReaderMgr.skipPastSpaces();
nextCh = fReaderMgr.peekNextChar();
}
else
{
// Emit the error but keep on going
emitError(XMLErrs::ExpectedWhitespace);
}
}
}
// Ok, here we first check for any of the special case characters.
// If its not one, then we do the normal case processing, which
// assumes that we've hit an attribute value, Otherwise, we do all
// the special case checks.
if (!fReaderMgr.getCurrentReader()->isSpecialStartTagChar(nextCh))
{
// Assume its going to be an attribute, so get a name from
// the input.
if (!fReaderMgr.getName(fAttNameBuf))
{
emitError(XMLErrs::ExpectedAttrName); fReaderMgr.skipPastChar(chCloseAngle);
return attCount;
}
const XMLCh* curAttNameBuf = fAttNameBuf.getRawBuffer();
// And next must be an equal sign
if (!scanEq())
{
static const XMLCh tmpList[] =
{
chSingleQuote, chDoubleQuote, chCloseAngle
, chOpenAngle, chForwardSlash, chNull
};
emitError(XMLErrs::ExpectedEqSign);
// Try to sync back up by skipping forward until we either
// hit something meaningful.
const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);
if ((chFound == chCloseAngle) || (chFound == chForwardSlash))
{
// Jump back to top for normal processing of these
continue;
}
else if ((chFound == chSingleQuote)
|| (chFound == chDoubleQuote)
|| fReaderMgr.getCurrentReader()->isWhitespace(chFound))
{
// Just fall through assuming that the value is to follow
}
else if (chFound == chOpenAngle)
{
// Assume a malformed tag and that new one is starting
emitError(XMLErrs::UnterminatedStartTag, elemName);
return attCount;
}
else
{
// Something went really wrong
return attCount;
}
}
// Next should be the quoted attribute value. We just do a simple
// and stupid scan of this value. The only thing we do here
// is to expand entity references.
if (!basicAttrValueScan(curAttNameBuf, fAttValueBuf))
{
static const XMLCh tmpList[] =
{
chCloseAngle, chOpenAngle, chForwardSlash, chNull
};
emitError(XMLErrs::ExpectedAttrValue);
// It failed, so lets try to get synced back up. We skip
// forward until we find some whitespace or one of the
// chars in our list.
const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);
if ((chFound == chCloseAngle)
|| (chFound == chForwardSlash)
|| fReaderMgr.getCurrentReader()->isWhitespace(chFound))
{
// Just fall through and process this attribute, though
// the value will be "".
}
else if (chFound == chOpenAngle) {
// Assume a malformed tag and that new one is starting
emitError(XMLErrs::UnterminatedStartTag, elemName);
return attCount;
}
else
{
// Something went really wrong
return attCount;
}
}
// Make sure that the name is basically well formed for namespace
// enabled rules. It either has no colons, or it has one which
// is neither the first or last char.
const int colonFirst = XMLString::indexOf(curAttNameBuf, chColon);
if (colonFirst != -1)
{
const int colonLast = XMLString::lastIndexOf(chColon, curAttNameBuf, fAttNameBuf.getLen());
if (colonFirst != colonLast)
{
emitError(XMLErrs::TooManyColonsInName);
continue;
}
else if ((colonFirst == 0)
|| (colonLast == (int)fAttNameBuf.getLen() - 1))
{
emitError(XMLErrs::InvalidColonPos);
continue;
}
}
// And now lets add it to the passed collection. If we have not
// filled it up yet, then we use the next element. Else we add
// a new one.
KVStringPair* curPair = 0;
if (attCount >= curVecSize)
{
curPair = new (fMemoryManager) KVStringPair
(
curAttNameBuf
, fAttNameBuf.getLen()
, fAttValueBuf.getRawBuffer()
, fAttValueBuf.getLen()
, fMemoryManager
);
toFill.addElement(curPair);
}
else
{
curPair = toFill.elementAt(attCount);
curPair->set
(
curAttNameBuf,
fAttNameBuf.getLen(),
fAttValueBuf.getRawBuffer(),
fAttValueBuf.getLen()
);
}
// And bump the count of attributes we've gotten
attCount++;
// And go to the top again for another attribute
continue;
}
// It was some special case character so do all of the checks and
// deal with it. if (!nextCh)
ThrowXMLwithMemMgr(UnexpectedEOFException, XMLExcepts::Gen_UnexpectedEOF, fMemoryManager);
if (nextCh == chForwardSlash)
{
fReaderMgr.getNextChar();
isEmpty = true;
if (!fReaderMgr.skippedChar(chCloseAngle))
emitError(XMLErrs::UnterminatedStartTag, elemName);
break;
}
else if (nextCh == chCloseAngle)
{
fReaderMgr.getNextChar();
break;
}
else if (nextCh == chOpenAngle)
{
// Check for this one specially, since its going to be common
// and it is kind of auto-recovering since we've already hit the
// next open bracket, which is what we would have seeked to (and
// skipped this whole tag.)
emitError(XMLErrs::UnterminatedStartTag, elemName);
break;
}
else if ((nextCh == chSingleQuote) || (nextCh == chDoubleQuote))
{
// Check for this one specially, which is probably a missing
// attribute name, e.g. ="value". Just issue expected name
// error and eat the quoted string, then jump back to the
// top again.
emitError(XMLErrs::ExpectedAttrName);
fReaderMgr.getNextChar();
fReaderMgr.skipQuotedString(nextCh);
fReaderMgr.skipPastSpaces();
continue;
}
}
return attCount;
}
// This method will kick off the scanning of the primary content of the
// document, i.e. the elements.
bool IGXMLScanner::scanContent()
{
// Go into a loop until we hit the end of the root element, or we fall
// out because there is no root element.
//
// We have to do kind of a deeply nested double loop here in order to
// avoid doing the setup/teardown of the exception handler on each
// round. Doing it this way we only do it when an exception actually
// occurs.
bool gotData = true;
bool inMarkup = false;
while (gotData)
{
try
{
while (gotData)
{
// Sense what the next top level token is. According to what
// this tells us, we will call something to handle that kind
// of thing.
unsigned int orgReader;
const XMLTokens curToken = senseNextToken(orgReader);
// Handle character data and end of file specially. Char data
// is not markup so we don't want to handle it in the loop // below.
if (curToken == Token_CharData)
{
// Scan the character data and call appropriate events. Let
// him use our local character data buffer for efficiency.
scanCharData(fCDataBuf);
continue;
}
else if (curToken == Token_EOF)
{
// The element stack better be empty at this point or we
// ended prematurely before all elements were closed.
if (!fElemStack.isEmpty())
{
const ElemStack::StackElem* topElem = fElemStack.popTop();
emitError
(
XMLErrs::EndedWithTagsOnStack
, topElem->fThisElement->getFullName()
);
}
// Its the end of file, so clear the got data flag
gotData = false;
continue;
}
// We are in some sort of markup now
inMarkup = true;
// According to the token we got, call the appropriate
// scanning method.
switch(curToken)
{
case Token_CData :
// Make sure we are within content
if (fElemStack.isEmpty())
emitError(XMLErrs::CDATAOutsideOfContent);
scanCDSection();
break;
case Token_Comment :
scanComment();
break;
case Token_EndTag :
scanEndTag(gotData);
break;
case Token_PI :
scanPI();
break;
case Token_StartTag :
if (fDoNamespaces)
scanStartTagNS(gotData);
else
scanStartTag(gotData);
break;
default :
fReaderMgr.skipToChar(chOpenAngle);
break;
}
if (orgReader != fReaderMgr.getCurrentReaderNum())
emitError(XMLErrs::PartialMarkupInEntity);
// And we are back out of markup again
inMarkup = false; }
}
catch(const EndOfEntityException& toCatch)
{
// If we were in some markup when this happened, then its a
// partial markup error.
if (inMarkup)
emitError(XMLErrs::PartialMarkupInEntity);
// Send an end of entity reference event
if (fDocHandler)
fDocHandler->endEntityReference(toCatch.getEntity());
inMarkup = false;
}
}
// It went ok, so return success
return true;
}
void IGXMLScanner::scanEndTag(bool& gotData)
{
// Assume we will still have data until proven otherwise. It will only
// ever be false if this is the end of the root element.
gotData = true;
// Check if the element stack is empty. If so, then this is an unbalanced
// element (i.e. more ends than starts, perhaps because of bad text
// causing one to be skipped.)
if (fElemStack.isEmpty())
{
emitError(XMLErrs::MoreEndThanStartTags);
fReaderMgr.skipPastChar(chCloseAngle);
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Scan_UnbalancedStartEnd, fMemoryManager);
}
// Pop the stack of the element we are supposed to be ending. Remember
// that we don't own this. The stack just keeps them and reuses them.
unsigned int uriId = (fDoNamespaces)
? fElemStack.getCurrentURI() : fEmptyNamespaceId;
// these get initialized below
const ElemStack::StackElem* topElem = 0;
const XMLCh *elemName = 0;
// Make sure that its the end of the element that we expect
// special case for schema validation, whose element decls,
// obviously don't contain prefix information
if(fGrammarType == Grammar::SchemaGrammarType)
{
elemName = fElemStack.getCurrentSchemaElemName();
topElem = fElemStack.popTop();
}
else
{
topElem = fElemStack.popTop();
elemName = topElem->fThisElement->getFullName();
}
if (!fReaderMgr.skippedString(elemName))
{
emitError
(
XMLErrs::ExpectedEndOfTagX
, elemName
);
fReaderMgr.skipPastChar(chCloseAngle);
return;
}
// See if it was the root element, to avoid multiple calls below
const bool isRoot = fElemStack.isEmpty();
// Make sure we are back on the same reader as where we started
if (topElem->fReaderNum != fReaderMgr.getCurrentReaderNum())
emitError(XMLErrs::PartialTagMarkupError);
// Skip optional whitespace
fReaderMgr.skipPastSpaces();
// Make sure we find the closing bracket
if (!fReaderMgr.skippedChar(chCloseAngle))
{
emitError
(
XMLErrs::UnterminatedEndTag
, topElem->fThisElement->getFullName()
);
}
if (fGrammarType == Grammar::SchemaGrammarType)
{
// reset error occurred
fPSVIElemContext.fErrorOccurred = fErrorStack->pop();
if (fValidate && topElem->fThisElement->isDeclared())
{
fPSVIElemContext.fCurrentTypeInfo = ((SchemaValidator*) fValidator)->getCurrentTypeInfo();
if(!fPSVIElemContext.fCurrentTypeInfo)
fPSVIElemContext.fCurrentDV = ((SchemaValidator*) fValidator)->getCurrentDatatypeValidator();
else
fPSVIElemContext.fCurrentDV = 0;
if(fPSVIHandler)
{
fPSVIElemContext.fNormalizedValue = ((SchemaValidator*) fValidator)->getNormalizedValue();
if (XMLString::equals(fPSVIElemContext.fNormalizedValue, XMLUni::fgZeroLenString))
fPSVIElemContext.fNormalizedValue = 0;
}
}
else
{
fPSVIElemContext.fCurrentDV = 0;
fPSVIElemContext.fCurrentTypeInfo = 0;
fPSVIElemContext.fNormalizedValue = 0;
}
}
// If validation is enabled, then lets pass him the list of children and
// this element and let him validate it.
DatatypeValidator* psviMemberType = 0;
if (fValidate)
{
//
// XML1.0-3rd
// Validity Constraint:
// The declaration matches EMPTY and the element has no content (not even
// entity references, comments, PIs or white space).
//
if ( (fGrammarType == Grammar::DTDGrammarType) &&
(topElem->fCommentOrPISeen) &&
(((DTDElementDecl*) topElem->fThisElement)->getModelType() == DTDElementDecl::Empty))
{
fValidator->emitError
(
XMLValid::EmptyElemHasContent
, topElem->fThisElement->getFullName()
);
}
//
// XML1.0-3rd
// Validity Constraint:
//
// The declaration matches children and the sequence of child elements
// belongs to the language generated by the regular expression in the
// content model, with optional white space, comments and PIs
// (i.e. markup matching production [27] Misc) between the start-tag and
// the first child element, between child elements, or between the last
// child element and the end-tag.
//
// Note that
// a CDATA section containing only white space or
// a reference to an entity whose replacement text is character references
// expanding to white space do not match the nonterminal S, and hence
// cannot appear in these positions; however,
// a reference to an internal entity with a literal value consisting
// of character references expanding to white space does match S,
// since its replacement text is the white space resulting from expansion
// of the character references.
//
if ( (fGrammarType == Grammar::DTDGrammarType) &&
(topElem->fReferenceEscaped) &&
(((DTDElementDecl*) topElem->fThisElement)->getModelType() == DTDElementDecl::Children))
{
fValidator->emitError
(
XMLValid::ElemChildrenHasInvalidWS
, topElem->fThisElement->getFullName()
);
}
int res = fValidator->checkContent
(
topElem->fThisElement
, topElem->fChildren
, topElem->fChildCount
);
if (res >= 0)
{
// One of the elements is not valid for the content. NOTE that
// if no children were provided but the content model requires
// them, it comes back with a zero value. But we cannot use that
// to index the child array in this case, and have to put out a
// special message.
if (!topElem->fChildCount)
{
fValidator->emitError
(
XMLValid::EmptyNotValidForContent
, topElem->fThisElement->getFormattedContentModel()
);
}
else if ((unsigned int)res >= topElem->fChildCount)
{
fValidator->emitError
(
XMLValid::NotEnoughElemsForCM
, topElem->fThisElement->getFormattedContentModel()
);
}
else
{
fValidator->emitError
(
XMLValid::ElementNotValidForContent
, topElem->fChildren[res]->getRawName()
, topElem->fThisElement->getFormattedContentModel() );
}
}
if (fGrammarType == Grammar::SchemaGrammarType) {
if (((SchemaValidator*) fValidator)->getErrorOccurred())
fPSVIElemContext.fErrorOccurred = true;
else if (fPSVIElemContext.fCurrentDV && fPSVIElemContext.fCurrentDV->getType() == DatatypeValidator::Union)
psviMemberType = fValidationContext->getValidatingMemberType();
if (fPSVIHandler)
{
fPSVIElemContext.fIsSpecified = ((SchemaValidator*) fValidator)->getIsElemSpecified();
if(fPSVIElemContext.fIsSpecified)
fPSVIElemContext.fNormalizedValue = ((SchemaElementDecl *)topElem->fThisElement)->getDefaultValue();
}
// call matchers and de-activate context
if (toCheckIdentityConstraint())
{
fICHandler->deactivateContext
(
(SchemaElementDecl *) topElem->fThisElement
, fContent.getRawBuffer()
);
}
}
}
if (fGrammarType == Grammar::SchemaGrammarType)
{
if (fPSVIHandler)
{
endElementPSVI(
(SchemaElementDecl*)topElem->fThisElement, psviMemberType);
}
// now we can reset the datatype buffer, since the
// application has had a chance to copy the characters somewhere else
((SchemaValidator *)fValidator)->clearDatatypeBuffer();
}
// If we have a doc handler, tell it about the end tag
if (fDocHandler)
{
fDocHandler->endElement
(
*topElem->fThisElement
, uriId
, isRoot
, topElem->fThisElement->getElementName()->getPrefix()
);
}
if (fGrammarType == Grammar::SchemaGrammarType) {
if (!isRoot)
{
// update error information
fErrorStack->push((fErrorStack->size() && fErrorStack->pop()) || fPSVIElemContext.fErrorOccurred);
}
}
// If this was the root, then done with content
gotData = !isRoot;
if (gotData) {
if (fDoNamespaces) { // Restore the grammar
fGrammar = fElemStack.getCurrentGrammar();
fGrammarType = fGrammar->getGrammarType();
if (fGrammarType == Grammar::SchemaGrammarType && !fValidator->handlesSchema()) {
if (fValidatorFromUser)
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoSchemaValidator, fMemoryManager);
else {
fValidator = fSchemaValidator;
}
}
else if (fGrammarType == Grammar::DTDGrammarType && !fValidator->handlesDTD()) {
if (fValidatorFromUser)
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
else {
fValidator = fDTDValidator;
}
}
fValidator->setGrammar(fGrammar);
}
// Restore the validation flag
fValidate = fElemStack.getValidationFlag();
}
}
// This method handles the high level logic of scanning the DOCType
// declaration. This calls the DTDScanner and kicks off both the scanning of
// the internal subset and the scanning of the external subset, if any.
//
// When we get here the '<!DOCTYPE' part has already been scanned, which is
// what told us that we had a doc type decl to parse.
void IGXMLScanner::scanDocTypeDecl()
{
// We have a doc type. So, switch the Grammar.
switchGrammar(XMLUni::fgDTDEntityString);
if (fDocTypeHandler)
fDocTypeHandler->resetDocType();
// There must be some space after DOCTYPE
if (!fReaderMgr.skipPastSpaces())
{
emitError(XMLErrs::ExpectedWhitespace);
// Just skip the Doctype declaration and return
fReaderMgr.skipPastChar(chCloseAngle);
return;
}
// Get a buffer for the root element
XMLBufBid bbRootName(&fBufMgr);
// Get a name from the input, which should be the name of the root
// element of the upcoming content.
fReaderMgr.getName(bbRootName.getBuffer());
if (bbRootName.isEmpty())
{
emitError(XMLErrs::NoRootElemInDOCTYPE);
fReaderMgr.skipPastChar(chCloseAngle);
return;
}
// Store the root element name for later check
setRootElemName(bbRootName.getRawBuffer());
// This element obviously is not going to exist in the element decl
// pool yet, but we need to call docTypeDecl. So force it into
// the element decl pool, marked as being there because it was in // the DOCTYPE. Later, when its declared, the status will be updated.
//
// Only do this if we are not reusing the validator! If we are reusing,
// then look it up instead. It has to exist!
DTDElementDecl* rootDecl = new (fGrammarPoolMemoryManager) DTDElementDecl
(
bbRootName.getRawBuffer()
, fEmptyNamespaceId
, DTDElementDecl::Any
, fGrammarPoolMemoryManager
);
Janitor<DTDElementDecl> rootDeclJanitor(rootDecl);
rootDecl->setCreateReason(DTDElementDecl::AsRootElem);
rootDecl->setExternalElemDeclaration(true);
if(!fUseCachedGrammar)
{
// this will break getRootElemId on DTDGrammar when
// cached grammars are in use, but
// why would one use this anyway???
((DTDGrammar*)fGrammar)->setRootElemId(fGrammar->putElemDecl(rootDecl));
rootDeclJanitor.release();
} else
{
// attach this to the undeclared element pool so that it gets deleted
XMLElementDecl* elemDecl = fDTDElemNonDeclPool->getByKey(bbRootName.getRawBuffer());
if (elemDecl)
{
rootDecl->setId(elemDecl->getId());
}
else
{
rootDecl->setId(fDTDElemNonDeclPool->put((DTDElementDecl*)rootDecl));
rootDeclJanitor.release();
}
}
// Skip any spaces after the name
fReaderMgr.skipPastSpaces();
// And now if we are looking at a >, then we are done. It is not
// required to have an internal or external subset, though why you
// would not escapes me.
if (fReaderMgr.skippedChar(chCloseAngle)) {
// If we have a doc type handler and advanced callbacks are enabled,
// call the doctype event.
if (fDocTypeHandler)
fDocTypeHandler->doctypeDecl(*rootDecl, 0, 0, false);
return;
}
// either internal/external subset
if (fValScheme == Val_Auto && !fValidate)
fValidate = true;
bool hasIntSubset = false;
bool hasExtSubset = false;
XMLCh* sysId = 0;
XMLCh* pubId = 0;
DTDScanner dtdScanner
(
(DTDGrammar*) fGrammar
, fDocTypeHandler
, fGrammarPoolMemoryManager
, fMemoryManager
);
dtdScanner.setScannerInfo(this, &fReaderMgr, &fBufMgr);
// If the next character is '[' then we have no external subset cause
// there is no system id, just the opening character of the internal
// subset. Else, has to be an id.
//
// Just look at the next char, don't eat it.
if (fReaderMgr.peekNextChar() == chOpenSquare)
{
hasIntSubset = true;
}
else
{
// Indicate we have an external subset
hasExtSubset = true;
fHasNoDTD = false;
// Get buffers for the ids
XMLBufBid bbPubId(&fBufMgr);
XMLBufBid bbSysId(&fBufMgr);
// Get the external subset id
if (!dtdScanner.scanId(bbPubId.getBuffer(), bbSysId.getBuffer(), DTDScanner::IDType_External))
{
fReaderMgr.skipPastChar(chCloseAngle);
return;
}
// Get copies of the ids we got
pubId = XMLString::replicate(bbPubId.getRawBuffer(), fMemoryManager);
sysId = XMLString::replicate(bbSysId.getRawBuffer(), fMemoryManager);
// Skip spaces and check again for the opening of an internal subset
fReaderMgr.skipPastSpaces();
// Just look at the next char, don't eat it.
if (fReaderMgr.peekNextChar() == chOpenSquare) {
hasIntSubset = true;
}
}
// Insure that the ids get cleaned up, if they got allocated
ArrayJanitor<XMLCh> janSysId(sysId, fMemoryManager);
ArrayJanitor<XMLCh> janPubId(pubId, fMemoryManager);
// If we have a doc type handler and advanced callbacks are enabled,
// call the doctype event.
if (fDocTypeHandler)
fDocTypeHandler->doctypeDecl(*rootDecl, pubId, sysId, hasIntSubset, hasExtSubset);
// Ok, if we had an internal subset, we are just past the [ character
// and need to parse that first.
if (hasIntSubset)
{
// Eat the opening square bracket
fReaderMgr.getNextChar();
checkInternalDTD(hasExtSubset, sysId, pubId);
// And try to scan the internal subset. If we fail, try to recover
// by skipping forward tot he close angle and returning.
if (!dtdScanner.scanInternalSubset())
{
fReaderMgr.skipPastChar(chCloseAngle);
return;
}
// Do a sanity check that some expanded PE did not propogate out of
// the doctype. This could happen if it was terminated early by bad
// syntax.
if (fReaderMgr.getReaderDepth() > 1)
{ emitError(XMLErrs::PEPropogated);
// Ask the reader manager to pop back down to the main level
fReaderMgr.cleanStackBackTo(1);
}
fReaderMgr.skipPastSpaces();
}
// And that should leave us at the closing > of the DOCTYPE line
if (!fReaderMgr.skippedChar(chCloseAngle))
{
// Do a special check for the common scenario of an extra ] char at
// the end. This is easy to recover from.
if (fReaderMgr.skippedChar(chCloseSquare)
&& fReaderMgr.skippedChar(chCloseAngle))
{
emitError(XMLErrs::ExtraCloseSquare);
}
else
{
emitError(XMLErrs::UnterminatedDOCTYPE);
fReaderMgr.skipPastChar(chCloseAngle);
}
}
// If we had an external subset, then we need to deal with that one
// next. If we are reusing the validator, then don't scan it.
if (hasExtSubset) {
InputSource* srcUsed=0;
Janitor<InputSource> janSrc(srcUsed);
// If we had an internal subset and we're using the cached grammar, it
// means that the ignoreCachedDTD is set, so we ignore the cached
// grammar
if (fUseCachedGrammar && !hasIntSubset)
{
srcUsed = resolveSystemId(sysId, pubId);
janSrc.reset(srcUsed);
Grammar* grammar = fGrammarResolver->getGrammar(srcUsed->getSystemId());
if (grammar && grammar->getGrammarType() == Grammar::DTDGrammarType) {
fDTDGrammar = (DTDGrammar*) grammar;
fGrammar = fDTDGrammar;
fValidator->setGrammar(fGrammar);
// If we don't report at least the external subset boundaries,
// an advanced document handler cannot know when the DTD end,
// since we've already sent a doctype decl that indicates there's
// there's an external subset.
if (fDocTypeHandler)
{
fDocTypeHandler->startExtSubset();
fDocTypeHandler->endExtSubset();
}
// should not be modifying cached grammars!
/********
rootDecl = (DTDElementDecl*) fGrammar->getElemDecl(fEmptyNamespaceId, 0, bbRootName.getRawBuffer(), Grammar::TOP_LEVEL_SCOPE);
if (rootDecl)
((DTDGrammar*)fGrammar)->setRootElemId(rootDecl->getId());
else {
rootDecl = new (fGrammarPoolMemoryManager) DTDElementDecl
(
bbRootName.getRawBuffer()
, fEmptyNamespaceId
, DTDElementDecl::Any
, fGrammarPoolMemoryManager
);
rootDecl->setCreateReason(DTDElementDecl::AsRootElem); rootDecl->setExternalElemDeclaration(true);
((DTDGrammar*)fGrammar)->setRootElemId(fGrammar->putElemDecl(rootDecl));
}
********/
return;
}
}
if (fLoadExternalDTD || fValidate)
{
// And now create a reader to read this entity
XMLReader* reader;
if (srcUsed) {
reader = fReaderMgr.createReader
(
*srcUsed
, false
, XMLReader::RefFrom_NonLiteral
, XMLReader::Type_General
, XMLReader::Source_External
, fCalculateSrcOfs
);
}
else {
reader = fReaderMgr.createReader
(
sysId
, pubId
, false
, XMLReader::RefFrom_NonLiteral
, XMLReader::Type_General
, XMLReader::Source_External
, srcUsed
, fCalculateSrcOfs
);
janSrc.reset(srcUsed);
}
// If it failed then throw an exception
if (!reader)
ThrowXMLwithMemMgr1(RuntimeException, XMLExcepts::Gen_CouldNotOpenDTD, srcUsed->getSystemId(), fMemoryManager);
if (fToCacheGrammar) {
unsigned int stringId = fGrammarResolver->getStringPool()->addOrFind(srcUsed->getSystemId());
const XMLCh* sysIdStr = fGrammarResolver->getStringPool()->getValueForId(stringId);
fGrammarResolver->orphanGrammar(XMLUni::fgDTDEntityString);
((XMLDTDDescription*) (fGrammar->getGrammarDescription()))->setSystemId(sysIdStr);
fGrammarResolver->putGrammar(fGrammar);
}
// In order to make the processing work consistently, we have to
// make this look like an external entity. So create an entity
// decl and fill it in and push it with the reader, as happens
// with an external entity. Put a janitor on it to insure it gets
// cleaned up. The reader manager does not adopt them.
const XMLCh gDTDStr[] = { chLatin_D, chLatin_T, chLatin_D , chNull };
DTDEntityDecl* declDTD = new (fGrammarPoolMemoryManager) DTDEntityDecl(gDTDStr, false, fGrammarPoolMemoryManager);
declDTD->setSystemId(sysId);
Janitor<DTDEntityDecl> janDecl(declDTD);
// Mark this one as a throw at end
reader->setThrowAtEnd(true);
// And push it onto the stack, with its pseudo name
fReaderMgr.pushReader(reader, declDTD);
// Tell it its not in an include section
dtdScanner.scanExtSubsetDecl(false, true); }
}
}
bool IGXMLScanner::scanStartTag(bool& gotData)
{
// Assume we will still have data until proven otherwise. It will only
// ever be false if this is the root and its empty.
gotData = true;
// Get the QName. In this case, we are not doing namespaces, so we just
// use it as is and don't have to break it into parts.
if (!fReaderMgr.getName(fQNameBuf))
{
emitError(XMLErrs::ExpectedElementName);
fReaderMgr.skipToChar(chOpenAngle);
return false;
}
// Assume it won't be an empty tag
bool isEmpty = false;
// Lets try to look up the element in the validator's element decl pool
// We can pass bogus values for the URI id and the base name. We know that
// this can only be called if we are doing a DTD style validator and that
// he will only look at the QName.
//
// We tell him to fault in a decl if he does not find one.
// Actually, we *don't* tell him to fault in a decl if he does not find one- NG
bool wasAdded = false;
const XMLCh *rawQName = fQNameBuf.getRawBuffer();
XMLElementDecl* elemDecl = fGrammar->getElemDecl
(
fEmptyNamespaceId
, 0
, rawQName
, Grammar::TOP_LEVEL_SCOPE
);
// look for it in the undeclared pool:
if(!elemDecl)
{
elemDecl = fDTDElemNonDeclPool->getByKey(rawQName);
}
if(!elemDecl)
{
// we're assuming this must be a DTD element. DTD's can be
// used with or without namespaces, but schemas cannot be used without
// namespaces.
wasAdded = true;
elemDecl = new (fMemoryManager) DTDElementDecl
(
rawQName
, fEmptyNamespaceId
, DTDElementDecl::Any
, fMemoryManager
);
elemDecl->setId(fDTDElemNonDeclPool->put((DTDElementDecl*)elemDecl));
}
// We do something different here according to whether we found the
// element or not.
if (wasAdded)
{
// If validating then emit an error
if (fValidate)
{
// This is to tell the reuse Validator that this element was
// faulted-in, was not an element in the validator pool originally
elemDecl->setCreateReason(XMLElementDecl::JustFaultIn);
fValidator->emitError
(
XMLValid::ElementNotDefined
, elemDecl->getFullName()
);
}
}
else
{
// If its not marked declared and validating, then emit an error
if (fValidate && !elemDecl->isDeclared())
{
fValidator->emitError
(
XMLValid::ElementNotDefined
, elemDecl->getFullName()
);
}
}
// See if its the root element
const bool isRoot = fElemStack.isEmpty();
// Expand the element stack and add the new element
fElemStack.addLevel(elemDecl, fReaderMgr.getCurrentReaderNum());
fElemStack.setValidationFlag(fValidate);
// Validate the element
if (fValidate)
fValidator->validateElement(elemDecl);
// If this is the first element and we are validating, check the root
// element.
if (isRoot)
{
fRootGrammar = fGrammar;
if (fValidate)
{
// If a DocType exists, then check if it matches the root name there.
if (fRootElemName && !XMLString::equals(fQNameBuf.getRawBuffer(), fRootElemName))
fValidator->emitError(XMLValid::RootElemNotLikeDocType);
// Some validators may also want to check the root, call the
// XMLValidator::checkRootElement
if (fValidatorFromUser && !fValidator->checkRootElement(elemDecl->getId()))
fValidator->emitError(XMLValid::RootElemNotLikeDocType);
}
}
else
{
// If the element stack is not empty, then add this element as a
// child of the previous top element. If its empty, this is the root
// elem and is not the child of anything.
fElemStack.addChild(elemDecl->getElementName(), true);
}
// Skip any whitespace after the name
fReaderMgr.skipPastSpaces();
// We loop until we either see a /> or >, handling attribute/value
// pairs until we get there.
unsigned int attCount = 0;
unsigned int curAttListSize = fAttrList->size();
wasAdded = false;
fElemCount++;
while (true)
{ // And get the next non-space character
XMLCh nextCh = fReaderMgr.peekNextChar();
// If the next character is not a slash or closed angle bracket,
// then it must be whitespace, since whitespace is required
// between the end of the last attribute and the name of the next
// one.
if (attCount)
{
if ((nextCh != chForwardSlash) && (nextCh != chCloseAngle))
{
if (fReaderMgr.getCurrentReader()->isWhitespace(nextCh))
{
// Ok, skip by them and peek another char
fReaderMgr.skipPastSpaces();
nextCh = fReaderMgr.peekNextChar();
}
else
{
// Emit the error but keep on going
emitError(XMLErrs::ExpectedWhitespace);
}
}
}
// Ok, here we first check for any of the special case characters.
// If its not one, then we do the normal case processing, which
// assumes that we've hit an attribute value, Otherwise, we do all
// the special case checks.
if (!fReaderMgr.getCurrentReader()->isSpecialStartTagChar(nextCh))
{
// Assume its going to be an attribute, so get a name from
// the input.
if (!fReaderMgr.getName(fAttNameBuf))
{
emitError(XMLErrs::ExpectedAttrName);
fReaderMgr.skipPastChar(chCloseAngle);
return false;
}
// And next must be an equal sign
if (!scanEq())
{
static const XMLCh tmpList[] =
{
chSingleQuote, chDoubleQuote, chCloseAngle
, chOpenAngle, chForwardSlash, chNull
};
emitError(XMLErrs::ExpectedEqSign);
// Try to sync back up by skipping forward until we either
// hit something meaningful.
const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);
if ((chFound == chCloseAngle) || (chFound == chForwardSlash))
{
// Jump back to top for normal processing of these
continue;
}
else if ((chFound == chSingleQuote)
|| (chFound == chDoubleQuote)
|| fReaderMgr.getCurrentReader()->isWhitespace(chFound))
{
// Just fall through assuming that the value is to follow
}
else if (chFound == chOpenAngle)
{
// Assume a malformed tag and that new one is starting
emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName()); return false;
}
else
{
// Something went really wrong
return false;
}
}
// See if this attribute is declared for this element. If we are
// not validating of course it will not be at first, but we will
// fault it into the pool (to avoid lots of redundant errors.)
XMLCh * namePtr = fAttNameBuf.getRawBuffer();
XMLAttDef* attDef = ((DTDElementDecl *)elemDecl)->getAttDef(namePtr);
// Add this attribute to the attribute list that we use to
// pass them to the handler. We reuse its existing elements
// but expand it as required.
// Note that we want to this first since this will
// make a copy of the namePtr; we can then make use of
// that copy in the hashtable lookup that checks
// for duplicates. This will mean we may have to update
// the type of the XMLAttr later.
XMLAttr* curAtt;
if (attCount >= curAttListSize)
{
curAtt = new (fMemoryManager) XMLAttr
(
0
, namePtr
, XMLUni::fgZeroLenString
, XMLUni::fgZeroLenString
, (attDef)?attDef->getType():XMLAttDef::CData
, true
, fMemoryManager
);
fAttrList->addElement(curAtt);
}
else
{
curAtt = fAttrList->elementAt(attCount);
curAtt->set
(
0
, namePtr
, XMLUni::fgZeroLenString
, XMLUni::fgZeroLenString
, (attDef)?attDef->getType():XMLAttDef::CData
);
curAtt->setSpecified(true);
}
// reset namePtr so it refers to newly-allocated memory
namePtr = (XMLCh *)curAtt->getName();
if (!attDef)
{
// If there is a validation handler, then we are validating
// so emit an error.
if (fValidate)
{
fValidator->emitError
(
XMLValid::AttNotDefinedForElement
, fAttNameBuf.getRawBuffer()
, elemDecl->getFullName()
);
}
if(!fUndeclaredAttrRegistry->containsKey(namePtr))
fUndeclaredAttrRegistry->put((void *)namePtr, 0);
else
{ emitError
(
XMLErrs::AttrAlreadyUsedInSTag
, namePtr
, elemDecl->getFullName()
);
}
}
else
{
// prepare for duplicate detection
unsigned int *curCountPtr = fAttDefRegistry->get(attDef);
if(!curCountPtr)
{
curCountPtr = getNewUIntPtr();
*curCountPtr = fElemCount;
fAttDefRegistry->put(attDef, curCountPtr);
}
else if(*curCountPtr < fElemCount)
*curCountPtr = fElemCount;
else
{
emitError
(
XMLErrs::AttrAlreadyUsedInSTag
, attDef->getFullName()
, elemDecl->getFullName()
);
}
}
// Skip any whitespace before the value and then scan the att
// value. This will come back normalized with entity refs and
// char refs expanded.
fReaderMgr.skipPastSpaces();
if (!scanAttValue(attDef, namePtr, fAttValueBuf))
{
static const XMLCh tmpList[] =
{
chCloseAngle, chOpenAngle, chForwardSlash, chNull
};
emitError(XMLErrs::ExpectedAttrValue);
// It failed, so lets try to get synced back up. We skip
// forward until we find some whitespace or one of the
// chars in our list.
const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);
if ((chFound == chCloseAngle)
|| (chFound == chForwardSlash)
|| fReaderMgr.getCurrentReader()->isWhitespace(chFound))
{
// Just fall through and process this attribute, though
// the value will be "".
}
else if (chFound == chOpenAngle)
{
// Assume a malformed tag and that new one is starting
emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName());
return false;
}
else
{
// Something went really wrong
return false;
}
}
// must set the newly-minted value on the XMLAttr:
curAtt->setValue(fAttValueBuf.getRawBuffer());
// Now that its all stretched out, lets look at its type and
// determine if it has a valid value. It will output any needed
// errors, but we just keep going. We only need to do this if
// we are validating.
if (attDef)
{
// Let the validator pass judgement on the attribute value
if (fValidate)
{
fValidator->validateAttrValue
(
attDef
, fAttValueBuf.getRawBuffer()
, false
, elemDecl
);
}
}
attCount++;
// And jump back to the top of the loop
continue;
}
// It was some special case character so do all of the checks and
// deal with it.
if (!nextCh)
ThrowXMLwithMemMgr(UnexpectedEOFException, XMLExcepts::Gen_UnexpectedEOF, fMemoryManager);
if (nextCh == chForwardSlash)
{
fReaderMgr.getNextChar();
isEmpty = true;
if (!fReaderMgr.skippedChar(chCloseAngle))
emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName());
break;
}
else if (nextCh == chCloseAngle)
{
fReaderMgr.getNextChar();
break;
}
else if (nextCh == chOpenAngle)
{
// Check for this one specially, since its going to be common
// and it is kind of auto-recovering since we've already hit the
// next open bracket, which is what we would have seeked to (and
// skipped this whole tag.)
emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName());
break;
}
else if ((nextCh == chSingleQuote) || (nextCh == chDoubleQuote))
{
// Check for this one specially, which is probably a missing
// attribute name, e.g. ="value". Just issue expected name
// error and eat the quoted string, then jump back to the
// top again.
emitError(XMLErrs::ExpectedAttrName);
fReaderMgr.getNextChar();
fReaderMgr.skipQuotedString(nextCh);
fReaderMgr.skipPastSpaces();
continue;
}
}
if(attCount)
{
// clean up after ourselves:
// clear the map used to detect duplicate attributes fUndeclaredAttrRegistry->removeAll();
}
// Ok, so lets get an enumerator for the attributes of this element
// and run through them for well formedness and validity checks. But
// make sure that we had any attributes before we do it, since the list
// would have have gotten faulted in anyway.
if (elemDecl->hasAttDefs())
{
// N.B.: this assumes DTD validation.
XMLAttDefList& attDefList = elemDecl->getAttDefList();
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(&curDef);
if (!attCountPtr || *attCountPtr < fElemCount)
{ // did not occur
if (fValidate)
{
// If we are validating and its required, then an error
if (defType == XMLAttDef::Required)
{
fValidator->emitError
(
XMLValid::RequiredAttrNotProvided
, curDef.getFullName()
);
}
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());
}
}
}
// 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 (attCount >= curAttListSize)
{
curAtt = new (fMemoryManager) XMLAttr
(
0
, curDef.getFullName()
, XMLUni::fgZeroLenString
, curDef.getValue()
, curDef.getType() , false
, fMemoryManager
);
fAttrList->addElement(curAtt);
curAttListSize++;
}
else
{
curAtt = fAttrList->elementAt(attCount);
curAtt->set
(
0
, curDef.getFullName()
, XMLUni::fgZeroLenString
, curDef.getValue()
, curDef.getType()
);
curAtt->setSpecified(false);
}
attCount++;
}
}
}
}
// If empty, validate content right now if we are validating and then
// pop the element stack top. Else, we have to update the current stack
// top's namespace mapping elements.
if (isEmpty)
{
// If validating, then insure that its legal to have no content
if (fValidate)
{
const int res = fValidator->checkContent(elemDecl, 0, 0);
if (res >= 0)
{
fValidator->emitError
(
XMLValid::ElementNotValidForContent
, elemDecl->getFullName()
, elemDecl->getFormattedContentModel()
);
}
}
// Pop the element stack back off since it'll never be used now
fElemStack.popTop();
// If the elem stack is empty, then it was an empty root
if (isRoot)
gotData = false;
else {
// Restore the validation flag
fValidate = fElemStack.getValidationFlag();
}
}
// If we have a document handler, then tell it about this start tag. We
// don't have any URI id to send along, so send fEmptyNamespaceId. We also do not send
// any prefix since its just one big name if we are not doing namespaces.
if (fDocHandler)
{
fDocHandler->startElement
(
*elemDecl
, fEmptyNamespaceId
, 0
, *fAttrList
, attCount
, isEmpty , isRoot
);
}
return true;
}
// This method is called to scan a start tag when we are processing
// namespaces. There are two different versions of this method, one for
// namespace aware processing and one for non-namespace aware processing.
//
// This method is called after we've scanned the < of a start tag. So we
// have to get the element name, then scan the attributes, after which
// we are either going to see >, />, or attributes followed by one of those
// sequences.
bool IGXMLScanner::scanStartTagNS(bool& gotData)
{
// Assume we will still have data until proven otherwise. It will only
// ever be false if this is the root and its empty.
gotData = true;
// Reset element content buffer
fContent.reset();
// The current position is after the open bracket, so we need to read in
// in the element name.
if (!fReaderMgr.getName(fQNameBuf))
{
emitError(XMLErrs::ExpectedElementName);
fReaderMgr.skipToChar(chOpenAngle);
return false;
}
// See if its the root element
const bool isRoot = fElemStack.isEmpty();
// Skip any whitespace after the name
fReaderMgr.skipPastSpaces();
// First we have to do the rawest attribute scan. We don't do any
// normalization of them at all, since we don't know yet what type they
// might be (since we need the element decl in order to do that.)
bool isEmpty;
unsigned int attCount = rawAttrScan
(
fQNameBuf.getRawBuffer()
, *fRawAttrList
, isEmpty
);
// save the contentleafname and currentscope before addlevel, for later use
ContentLeafNameTypeVector* cv = 0;
XMLContentModel* cm = 0;
int currentScope = Grammar::TOP_LEVEL_SCOPE;
bool laxThisOne = false;
if (!isRoot && fGrammarType == Grammar::SchemaGrammarType)
{
// schema validator will have correct type if validating
SchemaElementDecl* tempElement = (SchemaElementDecl*)
fElemStack.topElement()->fThisElement;
SchemaElementDecl::ModelTypes modelType = tempElement->getModelType();
ComplexTypeInfo *currType = 0;
if (fValidate)
{
currType = ((SchemaValidator*)fValidator)->getCurrentTypeInfo();
if (currType)
modelType = (SchemaElementDecl::ModelTypes)currType->getContentType(); else // something must have gone wrong
modelType = SchemaElementDecl::Any;
}
else
{
currType = tempElement->getComplexTypeInfo();
}
if ((modelType == SchemaElementDecl::Mixed_Simple)
|| (modelType == SchemaElementDecl::Mixed_Complex)
|| (modelType == SchemaElementDecl::Children))
{
cm = currType->getContentModel();
cv = cm->getContentLeafNameTypeVector();
currentScope = fElemStack.getCurrentScope();
}
else if (modelType == SchemaElementDecl::Any) {
laxThisOne = true;
}
}
// Now, since we might have to update the namespace map for this element,
// but we don't have the element decl yet, we just tell the element stack
// to expand up to get ready.
unsigned int elemDepth = fElemStack.addLevel();
fElemStack.setValidationFlag(fValidate);
// Check if there is any external schema location specified, and if we are at root,
// go through them first before scanning those specified in the instance document
if (isRoot
&& fDoSchema
&& (fExternalSchemaLocation || fExternalNoNamespaceSchemaLocation)) {
if (fExternalSchemaLocation)
parseSchemaLocation(fExternalSchemaLocation);
if (fExternalNoNamespaceSchemaLocation)
resolveSchemaGrammar(fExternalNoNamespaceSchemaLocation, XMLUni::fgZeroLenString);
}
// Make an initial pass through the list and find any xmlns attributes or
// schema attributes.
if (attCount)
scanRawAttrListforNameSpaces(attCount);
// Also find any default or fixed xmlns attributes in DTD defined for
// this element.
XMLElementDecl* elemDecl = 0;
if (fGrammarType == Grammar::DTDGrammarType) {
const XMLCh *rawQName = fQNameBuf.getRawBuffer();
elemDecl = fGrammar->getElemDecl
(
fEmptyNamespaceId
, 0
, rawQName
, Grammar::TOP_LEVEL_SCOPE
);
// may have not been declared:
if(!elemDecl)
elemDecl = fDTDElemNonDeclPool->getByKey(rawQName);
if (elemDecl) {
if (elemDecl->hasAttDefs()) {
XMLAttDefList& attDefList = elemDecl->getAttDefList();
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();
// update the NSMap if there are any default/fixed xmlns attributes
if ((defType == XMLAttDef::Default) || (defType == XMLAttDef::Fixed))
{
const XMLCh* rawPtr = curDef.getFullName();
if (!XMLString::compareNString(rawPtr, XMLUni::fgXMLNSColonString, 6)
|| XMLString::equals(rawPtr, XMLUni::fgXMLNSString))
updateNSMap(rawPtr, curDef.getValue());
}
}
}
}
}
// Resolve the qualified name to a URI and name so that we can look up
// the element decl for this element. We have now update the prefix to
// namespace map so we should get the correct element now.
int prefixColonPos = -1;
const XMLCh* qnameRawBuf = fQNameBuf.getRawBuffer();
unsigned int uriId = resolveQName
(
qnameRawBuf
, fPrefixBuf
, ElemStack::Mode_Element
, prefixColonPos
);
//if schema, check if we should lax or skip the validation of this element
bool parentValidation = fValidate;
if (cv) {
QName element(fPrefixBuf.getRawBuffer(), &qnameRawBuf[prefixColonPos + 1], uriId, fMemoryManager);
// elementDepth will be > 0, as cv is only constructed if element is not
// root.
laxThisOne = laxElementValidation(&element, cv, cm, elemDepth - 1);
}
// Look up the element now in the grammar. This will get us back a
// generic element decl object. We tell him to fault one in if he does
// not find it.
bool wasAdded = false;
const XMLCh* nameRawBuf = &qnameRawBuf[prefixColonPos + 1];
const XMLCh* original_uriStr = fGrammar->getTargetNamespace();
// REVISIT: since all this code only really
// makes sense for schemas, why can DTD validation theoretically pass
// through it? - NG
if (uriId != fEmptyNamespaceId) {
// Check in current grammar before switching if necessary
elemDecl = fGrammar->getElemDecl
(
uriId
, nameRawBuf
, qnameRawBuf
, currentScope
);
// may have not been declared; must look everywhere:
if (!elemDecl)
if(fGrammarType == Grammar::DTDGrammarType)
{
// should never occur in practice
elemDecl = fDTDElemNonDeclPool->getByKey(qnameRawBuf);
}
else if (fGrammarType == Grammar::SchemaGrammarType)
{
elemDecl = fSchemaElemNonDeclPool->getByKey(nameRawBuf, uriId, currentScope);
}
// this is initialized correctly only if there is
// no element decl. The other uses in this scope will only
// be encountered if there continues to be no element decl--which
// implies that this will have been initialized correctly. unsigned orgGrammarUri = uriId;
if (!elemDecl && ( orgGrammarUri = fURIStringPool->getId(original_uriStr)) != uriId) {
// not found, switch to the specified grammar
const XMLCh* uriStr = getURIText(uriId);
bool errorCondition = !switchGrammar(uriStr) && fValidate;
if (errorCondition && !laxThisOne)
{
fValidator->emitError
(
XMLValid::GrammarNotFound
,uriStr
);
}
elemDecl = fGrammar->getElemDecl
(
uriId
, nameRawBuf
, qnameRawBuf
, currentScope
);
}
if (!elemDecl && currentScope != Grammar::TOP_LEVEL_SCOPE) {
// if not found, then it may be a reference, try TOP_LEVEL_SCOPE
elemDecl = fGrammar->getElemDecl
(
uriId
, nameRawBuf
, qnameRawBuf
, Grammar::TOP_LEVEL_SCOPE
);
if(!elemDecl)
{
// look in the list of undeclared elements, as would have been done
// before we made grammars stateless:
elemDecl = fSchemaElemNonDeclPool->getByKey(nameRawBuf, uriId, Grammar::TOP_LEVEL_SCOPE);
}
if(!elemDecl) {
// still not found in specified uri
// try emptyNamesapce see if element should be un-qualified.
elemDecl = fGrammar->getElemDecl
(
fEmptyNamespaceId
, nameRawBuf
, qnameRawBuf
, currentScope
);
bool errorCondition = elemDecl && elemDecl->getCreateReason() != XMLElementDecl::JustFaultIn;
if (errorCondition && fValidate) {
fValidator->emitError
(
XMLValid::ElementNotUnQualified
, elemDecl->getFullName()
);
}
}
}
if (!elemDecl) {
// still not found, fault this in and issue error later
// switch back to original grammar first if necessary
if(orgGrammarUri != uriId)
{
switchGrammar(original_uriStr);
}
if(fGrammarType == Grammar::DTDGrammarType)
{ elemDecl = new (fMemoryManager) DTDElementDecl
(
qnameRawBuf
, uriId
, DTDElementDecl::Any
, fMemoryManager
);
elemDecl->setId(fDTDElemNonDeclPool->put((DTDElementDecl*)elemDecl));
} else if (fGrammarType == Grammar::SchemaGrammarType)
{
elemDecl = new (fMemoryManager) SchemaElementDecl
(
fPrefixBuf.getRawBuffer()
, nameRawBuf
, uriId
, SchemaElementDecl::Any
, Grammar::TOP_LEVEL_SCOPE
, fMemoryManager
);
elemDecl->setId(fSchemaElemNonDeclPool->put((void*)elemDecl->getBaseName(), uriId, currentScope, (SchemaElementDecl*)elemDecl));
}
wasAdded = true;
}
}
else if (!elemDecl)
{
//the element has no prefix,
//thus it is either a non-qualified element defined in current targetNS
//or an element that is defined in the globalNS
//try unqualified first
elemDecl = fGrammar->getElemDecl
(
uriId
, nameRawBuf
, qnameRawBuf
, currentScope
);
// may have not been declared; must look everywhere:
if(!elemDecl)
if (fGrammarType == Grammar::DTDGrammarType)
{
// should never happen in practice?
elemDecl = fDTDElemNonDeclPool->getByKey(qnameRawBuf);
}
else if (fGrammarType == Grammar::SchemaGrammarType)
{
// look in the list of undeclared elements, as would have been done
// before we made grammars stateless:
elemDecl = fSchemaElemNonDeclPool->getByKey(nameRawBuf, uriId, currentScope);
}
// this is initialized correctly only if there is
// no element decl. The other uses in this scope will only
// be encountered if there continues to be no element decl--which
// implies that this will have been initialized correctly.
unsigned orgGrammarUri = fEmptyNamespaceId;
if (!elemDecl && (orgGrammarUri = fURIStringPool->getId(original_uriStr)) != fEmptyNamespaceId) {
//not found, switch grammar and try globalNS
bool errorCondition = !switchGrammar(XMLUni::fgZeroLenString) && fValidate;
if (errorCondition && !laxThisOne)
{
fValidator->emitError
(
XMLValid::GrammarNotFound
, XMLUni::fgZeroLenString
);
}
elemDecl = fGrammar->getElemDecl (
uriId
, nameRawBuf
, qnameRawBuf
, currentScope
);
}
if (!elemDecl && currentScope != Grammar::TOP_LEVEL_SCOPE) {
// if not found, then it may be a reference, try TOP_LEVEL_SCOPE
elemDecl = fGrammar->getElemDecl
(
uriId
, nameRawBuf
, qnameRawBuf
, Grammar::TOP_LEVEL_SCOPE
);
if(!elemDecl)
{
// look in the list of undeclared elements, as would have been done
// before we made grammars stateless:
elemDecl = fSchemaElemNonDeclPool->getByKey(nameRawBuf, uriId, Grammar::TOP_LEVEL_SCOPE);
}
if (!elemDecl && orgGrammarUri != fEmptyNamespaceId) {
// still Not found in specified uri
// go to original Grammar again to see if element needs to be fully qualified.
bool errorCondition = !switchGrammar(original_uriStr) && fValidate;
if (errorCondition && !laxThisOne)
{
fValidator->emitError
(
XMLValid::GrammarNotFound
,original_uriStr
);
}
elemDecl = fGrammar->getElemDecl
(
orgGrammarUri
, nameRawBuf
, qnameRawBuf
, currentScope
);
if (elemDecl && elemDecl->getCreateReason() != XMLElementDecl::JustFaultIn && fValidate) {
fValidator->emitError
(
XMLValid::ElementNotQualified
, elemDecl->getFullName()
);
}
}
}
if (!elemDecl) {
// still not found, fault this in and issue error later
// switch back to original grammar first (if necessary)
if(orgGrammarUri != fEmptyNamespaceId)
{
switchGrammar(original_uriStr);
}
if(fGrammarType == Grammar::DTDGrammarType)
{
elemDecl = new (fMemoryManager) DTDElementDecl
(
qnameRawBuf
, uriId
, DTDElementDecl::Any
, fMemoryManager
); elemDecl->setId(fDTDElemNonDeclPool->put((DTDElementDecl*)elemDecl));
} else if (fGrammarType == Grammar::SchemaGrammarType)
{
elemDecl = new (fMemoryManager) SchemaElementDecl
(
fPrefixBuf.getRawBuffer()
, nameRawBuf
, uriId
, SchemaElementDecl::Any
, Grammar::TOP_LEVEL_SCOPE
, fMemoryManager
);
elemDecl->setId(fSchemaElemNonDeclPool->put((void*)elemDecl->getBaseName(), uriId, currentScope, (SchemaElementDecl*)elemDecl));
}
wasAdded = true;
}
}
// this info needed for DOMTypeInfo
fPSVIElemContext.fErrorOccurred = false;
// We do something different here according to whether we found the
// element or not.
if (wasAdded)
{
if (laxThisOne) {
fValidate = false;
fElemStack.setValidationFlag(fValidate);
}
else if (fValidate)
{
// If validating then emit an error
// This is to tell the reuse Validator that this element was
// faulted-in, was not an element in the grammar pool originally
elemDecl->setCreateReason(XMLElementDecl::JustFaultIn);
fValidator->emitError
(
XMLValid::ElementNotDefined
, elemDecl->getFullName()
);
if(fGrammarType == Grammar::SchemaGrammarType)
{
fPSVIElemContext.fErrorOccurred = true;
}
}
}
else
{
// If its not marked declared and validating, then emit an error
if (!elemDecl->isDeclared()) {
if(elemDecl->getCreateReason() == XMLElementDecl::NoReason) {
if(fGrammarType == Grammar::SchemaGrammarType) {
fPSVIElemContext.fErrorOccurred = true;
}
}
if (laxThisOne) {
fValidate = false;
fElemStack.setValidationFlag(fValidate);
}
else if (fValidate)
{
fValidator->emitError
(
XMLValid::ElementNotDefined
, elemDecl->getFullName()
); }
}
}
// Now we can update the element stack to set the current element
// decl. We expanded the stack above, but couldn't store the element
// decl because we didn't know it yet.
fElemStack.setElement(elemDecl, fReaderMgr.getCurrentReaderNum());
fElemStack.setCurrentURI(uriId);
if (isRoot)
{
fRootGrammar = fGrammar;
if (fGrammarType == Grammar::SchemaGrammarType && !fRootElemName)
fRootElemName = XMLString::replicate(qnameRawBuf, fMemoryManager);
}
if (fGrammarType == Grammar::SchemaGrammarType && fPSVIHandler)
{
fPSVIElemContext.fElemDepth++;
if (elemDecl->isDeclared())
{
fPSVIElemContext.fNoneValidationDepth = fPSVIElemContext.fElemDepth;
}
else
{
fPSVIElemContext.fFullValidationDepth = fPSVIElemContext.fElemDepth;
/******
* While we report an error for historical reasons, this should
* actually result in lax assessment - NG.
if (isRoot && fValidate)
fPSVIElemContext.fErrorOccurred = true;
*****/
}
}
// Validate the element
if (fValidate)
{
fValidator->validateElement(elemDecl);
if (fValidator->handlesSchema())
{
if (((SchemaValidator*) fValidator)->getErrorOccurred())
fPSVIElemContext.fErrorOccurred = true;
}
}
if (fGrammarType == Grammar::SchemaGrammarType) {
// squirrel away the element's QName, so that we can do an efficient
// end-tag match
fElemStack.setCurrentSchemaElemName(fQNameBuf.getRawBuffer());
ComplexTypeInfo* typeinfo = (fValidate)
? ((SchemaValidator*)fValidator)->getCurrentTypeInfo()
: ((SchemaElementDecl*) elemDecl)->getComplexTypeInfo();
if (typeinfo) {
currentScope = typeinfo->getScopeDefined();
// switch grammar if the typeinfo has a different grammar (happens when there is xsi:type)
XMLCh* typeName = typeinfo->getTypeName();
const XMLCh poundStr[] = {chPound, chNull};
if (!XMLString::startsWith(typeName, poundStr)) {
const int comma = XMLString::indexOf(typeName, chComma);
if (comma > 0) {
XMLBuffer prefixBuf(comma+1, fMemoryManager);
prefixBuf.append(typeName, comma); const XMLCh* uriStr = prefixBuf.getRawBuffer();
bool errorCondition = !switchGrammar(uriStr) && fValidate;
if (errorCondition && !laxThisOne)
{
fValidator->emitError
(
XMLValid::GrammarNotFound
, prefixBuf.getRawBuffer()
);
}
}
}
}
fElemStack.setCurrentScope(currentScope);
// Set element next state
if (elemDepth >= fElemStateSize) {
resizeElemState();
}
fElemState[elemDepth] = 0;
}
fElemStack.setCurrentGrammar(fGrammar);
// If this is the first element and we are validating, check the root
// element.
if (isRoot)
{
if (fValidate)
{
// If a DocType exists, then check if it matches the root name there.
if (fRootElemName && !XMLString::equals(qnameRawBuf, fRootElemName))
fValidator->emitError(XMLValid::RootElemNotLikeDocType);
// Some validators may also want to check the root, call the
// XMLValidator::checkRootElement
if (fValidatorFromUser && !fValidator->checkRootElement(elemDecl->getId()))
fValidator->emitError(XMLValid::RootElemNotLikeDocType);
}
}
else if (parentValidation)
{
// If the element stack is not empty, then add this element as a
// child of the previous top element. If its empty, this is the root
// elem and is not the child of anything.
fElemStack.addChild(elemDecl->getElementName(), true);
}
// PSVI handling: even if it turns out there are
// no attributes, we need to reset this list...
if(getPSVIHandler() && fGrammarType == Grammar::SchemaGrammarType )
fPSVIAttrList->reset();
// Now lets get the fAttrList filled in. This involves faulting in any
// defaulted and fixed attributes and normalizing the values of any that
// we got explicitly.
//
// We update the attCount value with the total number of attributes, but
// it goes in with the number of values we got during the raw scan of
// explictly provided attrs above.
attCount = buildAttList(*fRawAttrList, attCount, elemDecl, *fAttrList);
if(attCount)
{
// clean up after ourselves:
// clear the map used to detect duplicate attributes
fUndeclaredAttrRegistry->removeAll();
fUndeclaredAttrRegistryNS->removeAll();
}
// activate identity constraints
if (fGrammar &&
fGrammarType == Grammar::SchemaGrammarType &&
toCheckIdentityConstraint())
{
fICHandler->activateIdentityConstraint
(
(SchemaElementDecl*) elemDecl
, (int) elemDepth
, uriId
, fPrefixBuf.getRawBuffer()
, *fAttrList
, attCount
);
}
// Since the element may have default values, call start tag now regardless if it is empty or not
// If we have a document handler, then tell it about this start tag
if (fDocHandler)
{
fDocHandler->startElement
(
*elemDecl
, uriId
, fPrefixBuf.getRawBuffer()
, *fAttrList
, attCount
, false
, isRoot
);
}
// if we have a PSVIHandler, now's the time to call
// its handleAttributesPSVI method:
if(fPSVIHandler && fGrammarType == Grammar::SchemaGrammarType)
{
QName *eName = elemDecl->getElementName();
fPSVIHandler->handleAttributesPSVI
(
eName->getLocalPart()
, fURIStringPool->getValueForId(eName->getURI())
, fPSVIAttrList
);
}
// If empty, validate content right now if we are validating and then
// pop the element stack top. Else, we have to update the current stack
// top's namespace mapping elements.
if (isEmpty)
{
// Pop the element stack back off since it'll never be used now
fElemStack.popTop();
// reset current type info
DatatypeValidator* psviMemberType = 0;
if (fGrammarType == Grammar::SchemaGrammarType)
{
if (fValidate && elemDecl->isDeclared())
{
fPSVIElemContext.fCurrentTypeInfo = ((SchemaValidator*) fValidator)->getCurrentTypeInfo();
if(!fPSVIElemContext.fCurrentTypeInfo)
fPSVIElemContext.fCurrentDV = ((SchemaValidator*) fValidator)->getCurrentDatatypeValidator();
else
fPSVIElemContext.fCurrentDV = 0;
if(fPSVIHandler)
{
fPSVIElemContext.fNormalizedValue = ((SchemaValidator*) fValidator)->getNormalizedValue();
if (XMLString::equals(fPSVIElemContext.fNormalizedValue, XMLUni::fgZeroLenString)) fPSVIElemContext.fNormalizedValue = 0;
}
}
else
{
fPSVIElemContext.fCurrentDV = 0;
fPSVIElemContext.fCurrentTypeInfo = 0;
fPSVIElemContext.fNormalizedValue = 0;
}
}
// If validating, then insure that its legal to have no content
if (fValidate)
{
const int res = fValidator->checkContent(elemDecl, 0, 0);
if (res >= 0)
{
fValidator->emitError
(
XMLValid::ElementNotValidForContent
, elemDecl->getFullName()
, elemDecl->getFormattedContentModel()
);
}
if (fGrammarType == Grammar::SchemaGrammarType) {
if (((SchemaValidator*) fValidator)->getErrorOccurred())
{
fPSVIElemContext.fErrorOccurred = true;
}
else
{
if (fPSVIHandler)
{
fPSVIElemContext.fIsSpecified = ((SchemaValidator*) fValidator)->getIsElemSpecified();
if(fPSVIElemContext.fIsSpecified)
fPSVIElemContext.fNormalizedValue = ((SchemaElementDecl *)elemDecl)->getDefaultValue();
}
// note that if we're empty, won't be a current DV
if (fPSVIElemContext.fCurrentDV && fPSVIElemContext.fCurrentDV->getType() == DatatypeValidator::Union)
psviMemberType = fValidationContext->getValidatingMemberType();
}
// call matchers and de-activate context
if (toCheckIdentityConstraint())
{
fICHandler->deactivateContext
(
(SchemaElementDecl *) elemDecl
, fContent.getRawBuffer()
);
}
}
}
if (fGrammarType == Grammar::SchemaGrammarType)
{
if (fPSVIHandler)
{
endElementPSVI((SchemaElementDecl*)elemDecl, psviMemberType);
}
}
// If we have a doc handler, tell it about the end tag
if (fDocHandler)
{
fDocHandler->endElement
( *elemDecl
, uriId
, isRoot
, fPrefixBuf.getRawBuffer()
);
}
// If the elem stack is empty, then it was an empty root
if (isRoot)
gotData = false;
else
{
// Restore the grammar
fGrammar = fElemStack.getCurrentGrammar();
fGrammarType = fGrammar->getGrammarType();
if (fGrammarType == Grammar::SchemaGrammarType && !fValidator->handlesSchema()) {
if (fValidatorFromUser)
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoSchemaValidator, fMemoryManager);
else {
fValidator = fSchemaValidator;
}
}
else if (fGrammarType == Grammar::DTDGrammarType && !fValidator->handlesDTD()) {
if (fValidatorFromUser)
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
else {
fValidator = fDTDValidator;
}
}
fValidator->setGrammar(fGrammar);
// Restore the validation flag
fValidate = fElemStack.getValidationFlag();
}
}
else if (fGrammarType == Grammar::SchemaGrammarType)
{
// send a partial element psvi
if (fPSVIHandler)
{
ComplexTypeInfo* curTypeInfo = 0;
DatatypeValidator* curDV = 0;
XSTypeDefinition* typeDef = 0;
if (fValidate && elemDecl->isDeclared())
{
curTypeInfo = ((SchemaValidator*) fValidator)->getCurrentTypeInfo();
if (curTypeInfo)
{
typeDef = (XSTypeDefinition*) fModel->getXSObject(curTypeInfo);
}
else
{
curDV = ((SchemaValidator*) fValidator)->getCurrentDatatypeValidator();
if (curDV)
{
typeDef = (XSTypeDefinition*) fModel->getXSObject(curDV);
}
}
}
fPSVIElement->reset
(
PSVIElement::VALIDITY_NOTKNOWN
, PSVIElement::VALIDATION_NONE
, fRootElemName , ((SchemaValidator*) fValidator)->getIsElemSpecified()
, (elemDecl->isDeclared()) ? (XSElementDeclaration*) fModel->getXSObject(elemDecl) : 0
, typeDef
, 0 //memberType
, fModel
, ((SchemaElementDecl*)elemDecl)->getDefaultValue()
, 0
, 0
, 0
);
fPSVIHandler->handlePartialElementPSVI
(
elemDecl->getBaseName()
, fURIStringPool->getValueForId(elemDecl->getURI())
, fPSVIElement
);
}
// not empty
fErrorStack->push(fPSVIElemContext.fErrorOccurred);
}
return true;
}
unsigned int
IGXMLScanner::resolveQName(const XMLCh* const qName
, XMLBuffer& prefixBuf
, const short mode
, int& prefixColonPos)
{
// Lets split out the qName into a URI and name buffer first. The URI
// can be empty.
prefixColonPos = XMLString::indexOf(qName, chColon);
if (prefixColonPos == -1)
{
// Its all name with no prefix, so put the whole thing into the name
// buffer. Then map the empty string to a URI, since the empty string
// represents the default namespace. This will either return some
// explicit URI which the default namespace is mapped to, or the
// the default global namespace.
bool unknown = false;
prefixBuf.reset();
return fElemStack.mapPrefixToURI(XMLUni::fgZeroLenString, (ElemStack::MapModes) mode, unknown);
}
else
{
// Copy the chars up to but not including the colon into the prefix
// buffer.
prefixBuf.set(qName, prefixColonPos);
// Watch for the special namespace prefixes. We always map these to
// special URIs. 'xml' gets mapped to the official URI that its defined
// to map to by the NS spec. xmlns gets mapped to a special place holder
// URI that we define (so that it maps to something checkable.)
const XMLCh* prefixRawBuf = prefixBuf.getRawBuffer();
if (XMLString::equals(prefixRawBuf, XMLUni::fgXMLNSString)) {
// if this is an element, it is an error to have xmlns as prefix
if (mode == ElemStack::Mode_Element)
emitError(XMLErrs::NoXMLNSAsElementPrefix, qName);
return fXMLNSNamespaceId;
}
else if (XMLString::equals(prefixRawBuf, XMLUni::fgXMLString)) { return fXMLNamespaceId;
}
else
{
bool unknown = false;
unsigned int uriId = fElemStack.mapPrefixToURI(prefixRawBuf, (ElemStack::MapModes) mode, unknown);
if (unknown)
emitError(XMLErrs::UnknownPrefix, prefixRawBuf);
return uriId;
}
}
}
// ---------------------------------------------------------------------------
// IGXMLScanner: Helper methos
// ---------------------------------------------------------------------------
void IGXMLScanner::resizeElemState() {
unsigned int newSize = fElemStateSize * 2;
unsigned int* newElemState = (unsigned int*) fMemoryManager->allocate
(
newSize * sizeof(unsigned int)
); //new unsigned int[newSize];
// Copy the existing values
unsigned int index = 0;
for (; index < fElemStateSize; index++)
newElemState[index] = fElemState[index];
for (; index < newSize; index++)
newElemState[index] = 0;
// Delete the old array and udpate our members
fMemoryManager->deallocate(fElemState); //delete [] fElemState;
fElemState = newElemState;
fElemStateSize = newSize;
}
// ---------------------------------------------------------------------------
// IGXMLScanner: Grammar preparsing
// ---------------------------------------------------------------------------
Grammar* IGXMLScanner::loadGrammar(const InputSource& src
, const short grammarType
, const bool toCache)
{
Grammar* loadedGrammar = 0;
try
{
fGrammarResolver->cacheGrammarFromParse(false);
// if the new grammar has to be cached, better use the already cached
// grammars, or the an exception will be thrown when caching an already
// cached grammar
fGrammarResolver->useCachedGrammarInParse(toCache);
fRootGrammar = 0;
if (fValScheme == Val_Auto) {
fValidate = true;
}
// Reset some status flags
fInException = false;
fStandalone = false;
fErrorCount = 0;
fHasNoDTD = true;
fSeeXsi = false;
if (grammarType == Grammar::SchemaGrammarType) { loadedGrammar = loadXMLSchemaGrammar(src, toCache);
}
else if (grammarType == Grammar::DTDGrammarType) {
loadedGrammar = loadDTDGrammar(src, toCache);
}
// Reset the reader manager to close all files, sockets, etc...
fReaderMgr.reset();
}
// NOTE:
//
// In all of the error processing below, the emitError() call MUST come
// before the flush of the reader mgr, or it will fail because it tries
// to find out the position in the XML source of the error.
catch(const XMLErrs::Codes)
{
// This is a 'first fatal error' type exit, so reset and fall through
fReaderMgr.reset();
}
catch(const XMLValid::Codes)
{
// This is a 'first fatal error' type exit, so reset and fall through
fReaderMgr.reset();
}
catch(const XMLException& excToCatch)
{
// Emit the error and catch any user exception thrown from here. Make
// sure in all cases we flush the reader manager.
fInException = true;
try
{
if (excToCatch.getErrorType() == XMLErrorReporter::ErrType_Warning)
emitError
(
XMLErrs::DisplayErrorMessage
, excToCatch.getMessage()
);
else if (excToCatch.getErrorType() >= XMLErrorReporter::ErrType_Fatal)
emitError
(
XMLErrs::XMLException_Fatal
, excToCatch.getType()
, excToCatch.getMessage()
);
else
emitError
(
XMLErrs::XMLException_Error
, excToCatch.getType()
, excToCatch.getMessage()
);
}
catch(const OutOfMemoryException&)
{
throw;
}
catch(...)
{
// Flush the reader manager and rethrow user's error
fReaderMgr.reset();
throw;
}
// If it returned, then reset the reader manager and fall through
fReaderMgr.reset();
}
catch(const OutOfMemoryException&)
{
throw; }
catch(...)
{
// Reset and rethrow
fReaderMgr.reset();
throw;
}
return loadedGrammar;
}
Grammar* IGXMLScanner::loadDTDGrammar(const InputSource& src,
const bool toCache)
{
// Reset the validators
fDTDValidator->reset();
if (fValidatorFromUser)
fValidator->reset();
if (!fValidator->handlesDTD()) {
if (fValidatorFromUser && fValidate)
ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
else {
fValidator = fDTDValidator;
}
}
fDTDGrammar = (DTDGrammar*) fGrammarResolver->getGrammar(XMLUni::fgDTDEntityString);
if (fDTDGrammar) {
fDTDGrammar->reset();
}
else {
fDTDGrammar = new (fGrammarPoolMemoryManager) DTDGrammar(fGrammarPoolMemoryManager);
fGrammarResolver->putGrammar(fDTDGrammar);
}
fGrammar = fDTDGrammar;
fGrammarType = fGrammar->getGrammarType();
fValidator->setGrammar(fGrammar);
// And for all installed handlers, send reset events. This gives them
// a chance to flush any cached data.
if (fDocHandler)
fDocHandler->resetDocument();
if (fEntityHandler)
fEntityHandler->resetEntities();
if (fErrorReporter)
fErrorReporter->resetErrors();
// Clear out the id reference list
resetValidationContext();
// and clear out the darned undeclared DTD element pool...
fDTDElemNonDeclPool->removeAll();
if (toCache) {
unsigned int sysId = fGrammarResolver->getStringPool()->addOrFind(src.getSystemId());
const XMLCh* sysIdStr = fGrammarResolver->getStringPool()->getValueForId(sysId);
fGrammarResolver->orphanGrammar(XMLUni::fgDTDEntityString);
((XMLDTDDescription*) (fGrammar->getGrammarDescription()))->setSystemId(sysIdStr);
fGrammarResolver->putGrammar(fGrammar);
}
// Handle the creation of the XML reader object for this input source.
// This will provide us with transcoding and basic lexing services.
XMLReader* newReader = fReaderMgr.createReader
(
src , false
, XMLReader::RefFrom_NonLiteral
, XMLReader::Type_General
, XMLReader::Source_External
, fCalculateSrcOfs
);
if (!newReader) {
if (src.getIssueFatalErrorIfNotFound())
ThrowXMLwithMemMgr1(RuntimeException, XMLExcepts::Scan_CouldNotOpenSource, src.getSystemId(), fMemoryManager);
else
ThrowXMLwithMemMgr1(RuntimeException, XMLExcepts::Scan_CouldNotOpenSource_Warning, src.getSystemId(), fMemoryManager);
}
// In order to make the processing work consistently, we have to
// make this look like an external entity. So create an entity
// decl and fill it in and push it with the reader, as happens
// with an external entity. Put a janitor on it to insure it gets
// cleaned up. The reader manager does not adopt them.
const XMLCh gDTDStr[] = { chLatin_D, chLatin_T, chLatin_D , chNull };
DTDEntityDecl* declDTD = new (fGrammarPoolMemoryManager) DTDEntityDecl(gDTDStr, false, fGrammarPoolMemoryManager);
declDTD->setSystemId(src.getSystemId());
Janitor<DTDEntityDecl> janDecl(declDTD);
// Mark this one as a throw at end
newReader->setThrowAtEnd(true);
// And push it onto the stack, with its pseudo name
fReaderMgr.pushReader(newReader, declDTD);
// If we have a doc type handler and advanced callbacks are enabled,
// call the doctype event.
if (fDocTypeHandler) {
// Create a dummy root
DTDElementDecl* rootDecl = new (fGrammarPoolMemoryManager) DTDElementDecl
(
gDTDStr
, fEmptyNamespaceId
, DTDElementDecl::Any
, fGrammarPoolMemoryManager
);
rootDecl->setCreateReason(DTDElementDecl::AsRootElem);
rootDecl->setExternalElemDeclaration(true);
Janitor<DTDElementDecl> janSrc(rootDecl);
fDocTypeHandler->doctypeDecl(*rootDecl, src.getPublicId(), src.getSystemId(), false, true);
}
// Create DTDScanner
DTDScanner dtdScanner
(
(DTDGrammar*) fGrammar
, fDocTypeHandler
, fGrammarPoolMemoryManager
, fMemoryManager
);
dtdScanner.setScannerInfo(this, &fReaderMgr, &fBufMgr);
// Tell it its not in an include section
dtdScanner.scanExtSubsetDecl(false, true);
if (fValidate) {
// validate the DTD scan so far
fValidator->preContentValidation(false, true);
}
if (toCache)
fGrammarResolver->cacheGrammars();
return fDTDGrammar;}
// ---------------------------------------------------------------------------
// IGXMLScanner: Helper methods
// ---------------------------------------------------------------------------
void IGXMLScanner::processSchemaLocation(XMLCh* const schemaLoc)
{
XMLCh* locStr = schemaLoc;
XMLReader* curReader = fReaderMgr.getCurrentReader();
fLocationPairs->removeAllElements();
while (*locStr)
{
do {
if (!curReader->isWhitespace(*locStr))
break;
*locStr = chNull;
} while (*++locStr);
if (*locStr) {
fLocationPairs->addElement(locStr);
while (*++locStr) {
if (curReader->isWhitespace(*locStr))
break;
}
}
}
}
void IGXMLScanner::endElementPSVI(SchemaElementDecl* const elemDecl,
DatatypeValidator* const memberDV)
{
PSVIElement::ASSESSMENT_TYPE validationAttempted;
PSVIElement::VALIDITY_STATE validity = PSVIElement::VALIDITY_NOTKNOWN;
if (fPSVIElemContext.fElemDepth > fPSVIElemContext.fFullValidationDepth)
validationAttempted = PSVIElement::VALIDATION_FULL;
else if (fPSVIElemContext.fElemDepth > fPSVIElemContext.fNoneValidationDepth)
validationAttempted = PSVIElement::VALIDATION_NONE;
else
{
validationAttempted = PSVIElement::VALIDATION_PARTIAL;
fPSVIElemContext.fFullValidationDepth =
fPSVIElemContext.fNoneValidationDepth = fPSVIElemContext.fElemDepth - 1;
}
if (fValidate && elemDecl->isDeclared())
{
validity = (fPSVIElemContext.fErrorOccurred)
? PSVIElement::VALIDITY_INVALID : PSVIElement::VALIDITY_VALID;
}
XSTypeDefinition* typeDef = 0;
bool isMixed = false;
if (fPSVIElemContext.fCurrentTypeInfo)
{
typeDef = (XSTypeDefinition*) fModel->getXSObject(fPSVIElemContext.fCurrentTypeInfo);
SchemaElementDecl::ModelTypes modelType = (SchemaElementDecl::ModelTypes)fPSVIElemContext.fCurrentTypeInfo->getContentType();
isMixed = (modelType == SchemaElementDecl::Mixed_Simple
|| modelType == SchemaElementDecl::Mixed_Complex);
}
else if (fPSVIElemContext.fCurrentDV)
typeDef = (XSTypeDefinition*) fModel->getXSObject(fPSVIElemContext.fCurrentDV);
XMLCh* canonicalValue = 0;
if (fPSVIElemContext.fNormalizedValue && !isMixed &&
validity == PSVIElement::VALIDITY_VALID) {
if (memberDV)
canonicalValue = (XMLCh*) memberDV->getCanonicalRepresentation(fPSVIElemContext.fNormalizedValue, fMemoryManager);
else if (fPSVIElemContext.fCurrentDV)
canonicalValue = (XMLCh*) fPSVIElemContext.fCurrentDV->getCanonicalRepresentation(fPSVIElemContext.fNormalizedValue, fMemoryManager);
}
fPSVIElement->reset
(
validity
, validationAttempted
, fRootElemName
, fPSVIElemContext.fIsSpecified
, (elemDecl->isDeclared())
? (XSElementDeclaration*) fModel->getXSObject(elemDecl) : 0
, typeDef
, (memberDV) ? (XSSimpleTypeDefinition*) fModel->getXSObject(memberDV) : 0
, fModel
, elemDecl->getDefaultValue()
, fPSVIElemContext.fNormalizedValue
, canonicalValue
);
fPSVIHandler->handleElementPSVI
(
elemDecl->getBaseName()
, fURIStringPool->getValueForId(elemDecl->getURI())
, fPSVIElement
);
// decrease element depth
fPSVIElemContext.fElemDepth--;
}
void IGXMLScanner::resetPSVIElemContext()
{
fPSVIElemContext.fIsSpecified = false;
fPSVIElemContext.fErrorOccurred = false;
fPSVIElemContext.fElemDepth = -1;
fPSVIElemContext.fFullValidationDepth = -1;
fPSVIElemContext.fNoneValidationDepth = -1;
fPSVIElemContext.fCurrentDV = 0;
fPSVIElemContext.fCurrentTypeInfo = 0;
fPSVIElemContext.fNormalizedValue = 0;
}
XERCES_CPP_NAMESPACE_END