blob: ef680881553363618b5990fd0a75a09f613a108f [file] [log] [blame]
/*
* Copyright 1999-2004 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.
*/
#include "ElemAttribute.hpp"
#include <xercesc/sax/AttributeList.hpp>
#include <xalanc/PlatformSupport/DOMStringHelper.hpp>
#include <xalanc/PlatformSupport/XalanMessageLoader.hpp>
#include <xalanc/PlatformSupport/XalanUnicode.hpp>
#include <xalanc/DOMSupport/DOMServices.hpp>
#include "AVT.hpp"
#include "Constants.hpp"
#include "StylesheetConstructionContext.hpp"
#include "StylesheetExecutionContext.hpp"
XALAN_CPP_NAMESPACE_BEGIN
ElemAttribute::ElemAttribute(
StylesheetConstructionContext& constructionContext,
Stylesheet& stylesheetTree,
const AttributeListType& atts,
int lineNumber,
int columnNumber) :
ElemTemplateElement(constructionContext,
stylesheetTree,
lineNumber,
columnNumber,
StylesheetConstructionContext::ELEMNAME_ATTRIBUTE),
m_nameAVT(0),
m_namespaceAVT(0)
{
const unsigned int nAttrs = atts.getLength();
for(unsigned int i = 0; i < nAttrs; i++)
{
const XalanDOMChar* const aname = atts.getName(i);
if(equals(aname, Constants::ATTRNAME_NAME))
{
m_nameAVT =
constructionContext.createAVT(getLocator(), aname, atts.getValue(i), *this);
}
else if(equals(aname, Constants::ATTRNAME_NAMESPACE))
{
m_namespaceAVT =
constructionContext.createAVT(getLocator(), aname, atts.getValue(i), *this);
}
else if(!(isAttrOK(aname, atts, i, constructionContext) ||
processSpaceAttr(aname, atts, i, constructionContext)))
{
constructionContext.error(
XalanMessageLoader::getMessage(
XalanMessages::TemplateHasIllegalAttribute_2Param,
Constants::ELEMNAME_ATTRIBUTE_WITH_PREFIX_STRING.c_str(),
aname),
0,
this);
}
}
if(0 == m_nameAVT)
{
constructionContext.error(
XalanMessageLoader::getMessage(
XalanMessages::TemplateMustHaveAttribute_2Param,
Constants::ELEMNAME_ATTRIBUTE_WITH_PREFIX_STRING,
Constants::ATTRNAME_NAME),
0,
this);
}
}
ElemAttribute::~ElemAttribute()
{
}
const XalanDOMString&
ElemAttribute::getElementName() const
{
return Constants::ELEMNAME_ATTRIBUTE_WITH_PREFIX_STRING;
}
#if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
const ElemTemplateElement*
ElemAttribute::startElement(StylesheetExecutionContext& executionContext) const
{
assert(m_nameAVT != 0);
ElemTemplateElement::startElement(executionContext);
XalanDOMString& attrName = executionContext.getAndPushCachedString();
m_nameAVT->evaluate(attrName, *this, executionContext);
if(XalanQName::isValidQName(attrName) == false)
{
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::AttributeNameNotValidQName_1Param, attrName),
executionContext.getCurrentNode(),
getLocator());
executionContext.pushProcessCurrentAttribute(false);
}
else
{
// save original attribute name
StylesheetExecutionContext::GetAndReleaseCachedString origAttrNameGuard(executionContext);
XalanDOMString& origAttrName = origAttrNameGuard.get();
assign(origAttrName, attrName);
const XalanDOMString::size_type origAttrNameLength = length(origAttrName);
XalanDOMString::size_type indexOfNSSep = 0;
StylesheetExecutionContext::GetAndReleaseCachedString attrNameSpaceGuard(executionContext);
XalanDOMString& attrNameSpace = attrNameSpaceGuard.get();
if(0 != m_namespaceAVT)
{
m_namespaceAVT->evaluate(attrNameSpace, *this, executionContext);
indexOfNSSep = indexOf(origAttrName, XalanUnicode::charColon);
if(isEmpty(attrNameSpace))
{
// If there's no namespace, but the attribute has a
// prefix, then we must strip the prefix off.
if (indexOfNSSep < origAttrNameLength)
{
substring(origAttrName, attrName, indexOfNSSep + 1);
}
// We set this to indicate that there is no prefix any
// longer.
indexOfNSSep = origAttrNameLength;
}
else
{
// See if the namespace already exists. If it does, we'll get the
// prefix that was used when it was declared.
const XalanDOMString* const prefix =
executionContext.getResultPrefixForNamespace(attrNameSpace);
// If there is already a prefix for the namespace, and it's length
// is not 0, and there is no prefix on the attribute name, or
// it's equal to the prefix on the attribute, then go ahead
// and use that prefix.
if(prefix != 0 &&
length(*prefix) != 0 &&
(indexOfNSSep == origAttrNameLength ||
equals(c_wstr(*prefix), c_wstr(attrName), indexOfNSSep) == true))
{
if(indexOfNSSep < origAttrNameLength)
{
reserve(
attrName,
length(attrName) - (indexOfNSSep + 1) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(*prefix) + 1);
attrName.erase(0, indexOfNSSep + 1);
}
else
{
reserve(
attrName,
length(attrName) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(*prefix) + 1);
}
insert(attrName, 0, DOMServices::s_XMLNamespaceSeparatorString);
insert(attrName, 0, *prefix);
}
else
{
StylesheetExecutionContext::GetAndReleaseCachedString newPrefixGuard(executionContext);
XalanDOMString& newPrefix = newPrefixGuard.get();
// If the prefix on the QName is xmlns, we cannot use it.
const bool fPrefixIsXMLNS =
startsWith(origAttrName, DOMServices::s_XMLNamespaceWithSeparator);
// If there's a prefix, and it's not xmlns, then use
// the prefix that's provided.
if(indexOfNSSep < origAttrNameLength &&
fPrefixIsXMLNS == false)
{
substring(origAttrName, newPrefix, 0, indexOfNSSep);
// OK, make sure that the prefix provided maps to
// the same namespace as the one the user requested,
// and see if it's in use...
const XalanDOMString* const theNamespace =
executionContext.getResultNamespaceForPrefix(newPrefix);
if (theNamespace != 0 &&
equals(*theNamespace, attrNameSpace) == false &&
executionContext.isPendingResultPrefix(newPrefix) == true)
{
// It doesn't, so we'll need to manufacture a
// prefix.
clear(newPrefix);
// Strip the user-supplied prefix from the name...
substring(origAttrName, attrName, indexOfNSSep + 1);
}
}
if (length(newPrefix) == 0)
{
// If there's a prefix, and it's xmlns, then strip it
// off...
if (fPrefixIsXMLNS == true)
{
attrName.erase(0, indexOfNSSep + 1);
}
// Get a new, unique namespace prefix...
executionContext.getUniqueNamespaceValue(newPrefix);
// Reserve some space in the string.
reserve(
attrName,
length(attrName) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(newPrefix) + 1);
insert(attrName, 0, DOMServices::s_XMLNamespaceSeparatorString);
insert(attrName, 0, newPrefix);
}
// OK, now we have to generate a namespace declaration...
StylesheetExecutionContext::GetAndReleaseCachedString nsDeclGuard(executionContext);
XalanDOMString& nsDecl = nsDeclGuard.get();
reserve(nsDecl, DOMServices::s_XMLNamespaceWithSeparatorLength + length(newPrefix) + 1);
assign(nsDecl, DOMServices::s_XMLNamespaceWithSeparator);
append(nsDecl, newPrefix);
// Add the namespace declaration...
executionContext.addResultAttribute(nsDecl, attrNameSpace);
}
}
}
// Note we are using original attribute name for these tests.
else if(executionContext.isElementPending() == true &&
!equals(origAttrName, DOMServices::s_XMLNamespace))
{
// Don't try to create a namespace declaration for anything that
// starts with xml:
if (startsWith(origAttrName, DOMServices::s_XMLString) == true)
{
// This just fakes out the test below. It would be better if
// we had a better way of testing this...
indexOfNSSep = origAttrNameLength;
}
else
{
// make sure that if a prefix is specified on the attribute name, it is valid
indexOfNSSep = indexOf(origAttrName, XalanUnicode::charColon);
if(indexOfNSSep < origAttrNameLength)
{
StylesheetExecutionContext::GetAndReleaseCachedString nsprefixGuard(executionContext);
XalanDOMString& nsprefix = nsprefixGuard.get();
substring(origAttrName, nsprefix, 0, indexOfNSSep);
const XalanDOMString* const theNamespace =
getNamespaceForPrefix(nsprefix);
if (theNamespace != 0)
{
assign(attrNameSpace, *theNamespace);
const XalanDOMString* const theResultNamespace =
executionContext.getResultNamespaceForPrefix(nsprefix);
if (theResultNamespace != 0 &&
*theNamespace != *theResultNamespace)
{
// Oops! There's a conflict between an existing
// result namespace and the attribute's namespace.
// To be safe, because we are generating namespace
// declaration here, rather than somewhere that
// knows more about how that result namespace is
// used, let's change the prefix of the attribute.
nsprefix.clear();
executionContext.getUniqueNamespaceValue(nsprefix);
// Fix the name by removing the original prefix and
// inserting the new one.
attrName.erase(0, indexOfNSSep);
attrName.insert(attrName.begin(), nsprefix.begin(), nsprefix.end());
}
}
if (isEmpty(attrNameSpace))
{
// Could not resolve prefix
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::CouldNotResolvePrefix),
executionContext.getCurrentNode(),
getLocator());
}
else
{
// Check to see if there's already a namespace declaration in scope...
const XalanDOMString* const prefix =
executionContext.getResultPrefixForNamespace(attrNameSpace);
if (prefix == 0)
{
// We need to generate a namespace declaration...
StylesheetExecutionContext::GetAndReleaseCachedString nsDeclGuard(executionContext);
XalanDOMString& nsDecl = nsDeclGuard.get();
reserve(nsDecl, DOMServices::s_XMLNamespaceWithSeparatorLength + length(nsprefix) + 1);
assign(nsDecl, DOMServices::s_XMLNamespaceWithSeparator);
append(nsDecl, nsprefix);
// Add the namespace declaration...
executionContext.addResultAttribute(nsDecl, attrNameSpace);
}
}
}
}
}
else
{
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::AttributesCannotBeAdded),
executionContext.getCurrentNode(),
getLocator());
}
// If there was no namespace, or the namespace was resolved, process
// the result attribute.
if (indexOfNSSep == origAttrNameLength || !isEmpty(attrNameSpace))
{
executionContext.pushProcessCurrentAttribute(true);
executionContext.pushCopyTextNodesOnly(true);
XalanDOMString& theResult = executionContext.getAndPushCachedString();
return beginChildrenToString(executionContext,theResult);
}
else
{
executionContext.pushProcessCurrentAttribute(false);
}
}
executionContext.getAndPopCachedString();
return 0;
}
void
ElemAttribute::endElement(StylesheetExecutionContext& executionContext) const
{
if (executionContext.popProcessCurrentAttribute() == true)
{
endChildrenToString(executionContext);
XalanDOMString& theResult = executionContext.getAndPopCachedString();
XalanDOMString& attrName = executionContext.getAndPopCachedString();
executionContext.addResultAttribute(attrName,theResult);
executionContext.popCopyTextNodesOnly();
}
}
#endif
#if defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION)
void
ElemAttribute::execute(StylesheetExecutionContext& executionContext) const
{
assert(m_nameAVT != 0);
ElemTemplateElement::execute(executionContext);
StylesheetExecutionContext::GetAndReleaseCachedString attrNameGuard(executionContext);
XalanDOMString& attrName = attrNameGuard.get();
m_nameAVT->evaluate(attrName, *this, executionContext);
if(XalanQName::isValidQName(attrName) == false)
{
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::AttributeNameNotValidQName_1Param, attrName),
executionContext.getCurrentNode(),
getLocator());
}
else
{
// save original attribute name
StylesheetExecutionContext::GetAndReleaseCachedString origAttrNameGuard(executionContext);
XalanDOMString& origAttrName = origAttrNameGuard.get();
assign(origAttrName, attrName);
const XalanDOMString::size_type origAttrNameLength = length(origAttrName);
XalanDOMString::size_type indexOfNSSep = 0;
StylesheetExecutionContext::GetAndReleaseCachedString attrNameSpaceGuard(executionContext);
XalanDOMString& attrNameSpace = attrNameSpaceGuard.get();
if(0 != m_namespaceAVT)
{
m_namespaceAVT->evaluate(attrNameSpace, *this, executionContext);
indexOfNSSep = indexOf(origAttrName, XalanUnicode::charColon);
if(isEmpty(attrNameSpace))
{
// If there's no namespace, but the attribute has a
// prefix, then we must strip the prefix off.
if (indexOfNSSep < origAttrNameLength)
{
substring(origAttrName, attrName, indexOfNSSep + 1);
}
// We set this to indicate that there is no prefix any
// longer.
indexOfNSSep = origAttrNameLength;
}
else
{
// See if the namespace already exists. If it does, we'll get the
// prefix that was used when it was declared.
const XalanDOMString* const prefix =
executionContext.getResultPrefixForNamespace(attrNameSpace);
// If there is already a prefix for the namespace, and it's length
// is not 0, and there is no prefix on the attribute name, or
// it's equal to the prefix on the attribute, then go ahead
// and use that prefix.
if(prefix != 0 &&
length(*prefix) != 0 &&
(indexOfNSSep == origAttrNameLength ||
equals(c_wstr(*prefix), c_wstr(attrName), indexOfNSSep) == true))
{
if(indexOfNSSep < origAttrNameLength)
{
reserve(
attrName,
length(attrName) - (indexOfNSSep + 1) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(*prefix) + 1);
attrName.erase(0, indexOfNSSep + 1);
}
else
{
reserve(
attrName,
length(attrName) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(*prefix) + 1);
}
insert(attrName, 0, DOMServices::s_XMLNamespaceSeparatorString);
insert(attrName, 0, *prefix);
}
else
{
StylesheetExecutionContext::GetAndReleaseCachedString newPrefixGuard(executionContext);
XalanDOMString& newPrefix = newPrefixGuard.get();
// If the prefix on the QName is xmlns, we cannot use it.
const bool fPrefixIsXMLNS =
startsWith(origAttrName, DOMServices::s_XMLNamespaceWithSeparator);
// If there's a prefix, and it's not xmlns, then use
// the prefix that's provided.
if(indexOfNSSep < origAttrNameLength &&
fPrefixIsXMLNS == false)
{
substring(origAttrName, newPrefix, 0, indexOfNSSep);
// OK, make sure that the prefix provided maps to
// the same namespace as the one the user requested,
// and see if it's in use...
const XalanDOMString* const theNamespace =
executionContext.getResultNamespaceForPrefix(newPrefix);
if (theNamespace != 0 &&
equals(*theNamespace, attrNameSpace) == false &&
executionContext.isPendingResultPrefix(newPrefix) == true)
{
// It doesn't, so we'll need to manufacture a
// prefix.
clear(newPrefix);
// Strip the user-supplied prefix from the name...
substring(origAttrName, attrName, indexOfNSSep + 1);
}
}
if (length(newPrefix) == 0)
{
// If there's a prefix, and it's xmlns, then strip it
// off...
if (fPrefixIsXMLNS == true)
{
attrName.erase(0, indexOfNSSep + 1);
}
// Get a new, unique namespace prefix...
executionContext.getUniqueNamespaceValue(newPrefix);
// Reserve some space in the string.
reserve(
attrName,
length(attrName) + DOMServices::s_XMLNamespaceSeparatorStringLength + length(newPrefix) + 1);
insert(attrName, 0, DOMServices::s_XMLNamespaceSeparatorString);
insert(attrName, 0, newPrefix);
}
// OK, now we have to generate a namespace declaration...
StylesheetExecutionContext::GetAndReleaseCachedString nsDeclGuard(executionContext);
XalanDOMString& nsDecl = nsDeclGuard.get();
reserve(nsDecl, DOMServices::s_XMLNamespaceWithSeparatorLength + length(newPrefix) + 1);
assign(nsDecl, DOMServices::s_XMLNamespaceWithSeparator);
append(nsDecl, newPrefix);
// Add the namespace declaration...
executionContext.addResultAttribute(nsDecl, attrNameSpace);
}
}
}
// Note we are using original attribute name for these tests.
else if(executionContext.isElementPending() == true &&
!equals(origAttrName, DOMServices::s_XMLNamespace))
{
// Don't try to create a namespace declaration for anything that
// starts with xml:
if (startsWith(origAttrName, DOMServices::s_XMLString) == true)
{
// This just fakes out the test below. It would be better if
// we had a better way of testing this...
indexOfNSSep = origAttrNameLength;
}
else
{
// make sure that if a prefix is specified on the attribute name, it is valid
indexOfNSSep = indexOf(origAttrName, XalanUnicode::charColon);
if(indexOfNSSep < origAttrNameLength)
{
StylesheetExecutionContext::GetAndReleaseCachedString nsprefixGuard(executionContext);
XalanDOMString& nsprefix = nsprefixGuard.get();
substring(origAttrName, nsprefix, 0, indexOfNSSep);
const XalanDOMString* const theNamespace =
getNamespaceForPrefix(nsprefix);
if (theNamespace != 0)
{
assign(attrNameSpace, *theNamespace);
const XalanDOMString* const theResultNamespace =
executionContext.getResultNamespaceForPrefix(nsprefix);
if (theResultNamespace != 0 &&
*theNamespace != *theResultNamespace)
{
// Oops! There's a conflict between an existing
// result namespace and the attribute's namespace.
// To be safe, because we are generating namespace
// declaration here, rather than somewhere that
// knows more about how that result namespace is
// used, let's change the prefix of the attribute.
nsprefix.clear();
executionContext.getUniqueNamespaceValue(nsprefix);
// Fix the name by removing the original prefix and
// inserting the new one.
attrName.erase(0, indexOfNSSep);
attrName.insert(attrName.begin(), nsprefix.begin(), nsprefix.end());
}
}
if (isEmpty(attrNameSpace))
{
// Could not resolve prefix
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::CouldNotResolvePrefix),
executionContext.getCurrentNode(),
getLocator());
}
else
{
// Check to see if there's already a namespace declaration in scope...
const XalanDOMString* const prefix =
executionContext.getResultPrefixForNamespace(attrNameSpace);
if (prefix == 0)
{
// We need to generate a namespace declaration...
StylesheetExecutionContext::GetAndReleaseCachedString nsDeclGuard(executionContext);
XalanDOMString& nsDecl = nsDeclGuard.get();
reserve(nsDecl, DOMServices::s_XMLNamespaceWithSeparatorLength + length(nsprefix) + 1);
assign(nsDecl, DOMServices::s_XMLNamespaceWithSeparator);
append(nsDecl, nsprefix);
// Add the namespace declaration...
executionContext.addResultAttribute(nsDecl, attrNameSpace);
}
}
}
}
}
else
{
executionContext.warn(
XalanMessageLoader::getMessage(XalanMessages::AttributesCannotBeAdded),
executionContext.getCurrentNode(),
getLocator());
}
// If there was no namespace, or the namespace was resolved, process
// the result attribute.
if (indexOfNSSep == origAttrNameLength || !isEmpty(attrNameSpace))
{
StylesheetExecutionContext::SetAndRestoreCopyTextNodesOnly theSetAndRestore(executionContext, true);
childrenToResultAttribute(
executionContext,
attrName);
}
}
}
#endif
bool
ElemAttribute::childTypeAllowed(int xslToken) const
{
bool fResult = false;
switch(xslToken)
{
// char-instructions
case StylesheetConstructionContext::ELEMNAME_TEXT_LITERAL_RESULT:
case StylesheetConstructionContext::ELEMNAME_APPLY_TEMPLATES:
case StylesheetConstructionContext::ELEMNAME_APPLY_IMPORTS:
case StylesheetConstructionContext::ELEMNAME_CALL_TEMPLATE:
case StylesheetConstructionContext::ELEMNAME_FOR_EACH:
case StylesheetConstructionContext::ELEMNAME_VALUE_OF:
case StylesheetConstructionContext::ELEMNAME_COPY_OF:
case StylesheetConstructionContext::ELEMNAME_NUMBER:
case StylesheetConstructionContext::ELEMNAME_CHOOSE:
case StylesheetConstructionContext::ELEMNAME_IF:
case StylesheetConstructionContext::ELEMNAME_TEXT:
case StylesheetConstructionContext::ELEMNAME_COPY:
case StylesheetConstructionContext::ELEMNAME_VARIABLE:
case StylesheetConstructionContext::ELEMNAME_MESSAGE:
fResult = true;
break;
default:
break;
}
return fResult;
}
XALAN_CPP_NAMESPACE_END