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NamespacesHandler.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  *
00005  * Copyright (c) 2000 The Apache Software Foundation.  All rights 
00006  * reserved.
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
00011  *
00012  * 1. Redistributions of source code must retain the above copyright
00013  *    notice, this list of conditions and the following disclaimer. 
00014  *
00015  * 2. Redistributions in binary form must reproduce the above copyright
00016  *    notice, this list of conditions and the following disclaimer in
00017  *    the documentation and/or other materials provided with the
00018  *    distribution.
00019  *
00020  * 3. The end-user documentation included with the redistribution,
00021  *    if any, must include the following acknowledgment:  
00022  *       "This product includes software developed by the
00023  *        Apache Software Foundation (http://www.apache.org/)."
00024  *    Alternately, this acknowledgment may appear in the software itself,
00025  *    if and wherever such third-party acknowledgments normally appear.
00026  *
00027  * 4. The names "Xalan" and "Apache Software Foundation" must
00028  *    not be used to endorse or promote products derived from this
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00032  * 5. Products derived from this software may not be called "Apache",
00033  *    nor may "Apache" appear in their name, without prior written
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00036  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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00048  * ====================================================================
00049  *
00050  * This software consists of voluntary contributions made by many
00051  * individuals on behalf of the Apache Software Foundation and was
00052  * originally based on software copyright (c) 1999, International
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00060 
00061 #if !defined(XALAN_NAMESPACESHANDLER_HEADER_GUARD)
00062 #define XALAN_NAMESPACESHANDLER_HEADER_GUARD
00063 
00064 
00065 
00066 // Base include file.  Must be first.
00067 #include <XSLT/XSLTDefinitions.hpp>
00068 
00069 
00070 
00071 #include <map>
00072 #include <set>
00073 #include <vector>
00074 
00075 
00076 
00077 #include <XalanDOM/XalanDOMString.hpp>
00078 
00079 
00080 
00081 #include <XPath/NameSpace.hpp>
00082 #include <XPath/QName.hpp>
00083 
00084 
00085 
00086 class StylesheetConstructionContext;
00087 class StylesheetExecutionContext;
00088 
00089 
00090 
00091 class XALAN_XSLT_EXPORT NamespacesHandler
00092 {
00093 public:
00094 
00098     static void
00099     initialize();
00100 
00104     static void
00105     terminate();
00106 
00107 
00108     /* Some static strings for various namespace URIs...
00109      *
00110      */
00111     static const XalanDOMString&    s_ApacheXSLTNamespaceURI;
00112 
00113     static const XalanDOMString&    s_LotusXSLTNamespaceURI;
00114 
00115     static const XalanDOMString&    s_LotusXSLTNamespaceURIWithSeparator;
00116 
00117 
00118     class NameSpaceExtended : public NameSpace
00119     {
00120     public:
00121 
00122         NameSpaceExtended(
00123                     const XalanDOMString&   prefix = XalanDOMString(),
00124                     const XalanDOMString&   uri = XalanDOMString()) :
00125             NameSpace(prefix, uri),
00126             m_resultAttributeName()
00127         {
00128         }
00129 
00130         NameSpaceExtended(const NameSpace&  theNamespace) :
00131             NameSpace(theNamespace),
00132             m_resultAttributeName()
00133         {
00134         }
00135 
00141         const XalanDOMString&
00142         getResultAttributeName() const
00143         {
00144             return m_resultAttributeName;
00145         }
00146 
00152         void
00153         setResultAttributeName(const XalanDOMString&    name)
00154         {
00155             m_resultAttributeName = name;
00156         }
00157 
00158     private:
00159 
00160         XalanDOMString  m_resultAttributeName;
00161     };
00162 
00163     typedef QName::NamespaceVectorType                  NamespaceVectorType;
00164     typedef QName::NamespacesStackType                  NamespacesStackType;
00165 
00166 #if defined(XALAN_NO_NAMESPACES)
00167     typedef map<XalanDOMString,
00168                 XalanDOMString,
00169                 less<XalanDOMString> >                  ExcludedResultPrefixesMapType;
00170 
00171     typedef map<XalanDOMString,
00172                 NameSpaceExtended,
00173                 less<XalanDOMString> >                  NamespacesMapType;
00174 
00175     typedef map<XalanDOMString,
00176                 XalanDOMString,
00177                 less<XalanDOMString> >                  NamespaceAliasesMapType;
00178 
00179     typedef set<XalanDOMString,
00180                 less<XalanDOMString> >                  ExtensionNamespaceURISetType;
00181 #else
00182     typedef std::map<XalanDOMString, XalanDOMString>    ExcludedResultPrefixesMapType;
00183 
00184     typedef std::map<XalanDOMString,
00185                      NameSpaceExtended>                 NamespacesMapType;
00186 
00187     typedef std::map<XalanDOMString, XalanDOMString>    NamespaceAliasesMapType;
00188 
00189     typedef std::set<XalanDOMString>                    ExtensionNamespaceURISetType;
00190 #endif
00191 
00195     explicit
00196     NamespacesHandler();
00197 
00206     NamespacesHandler(
00207             const NamespacesHandler&    stylesheetNamespacesHandler,
00208             const NamespacesStackType&  theCurrentNamespaces,
00209             const XalanDOMString&       theXSLTNamespaceURI);
00210 
00211     NamespacesHandler(const NamespacesHandler&  theSource);
00212 
00213     ~NamespacesHandler();
00214 
00222     void
00223     processExcludeResultPrefixes(
00224             const XalanDOMChar*             theValue,
00225             const NamespacesStackType&      theCurrentNamespaces,
00226             StylesheetConstructionContext&  theConstructionContext);
00227 
00235     void
00236     processExtensionElementPrefixes(
00237             const XalanDOMChar*             theValue,
00238             const NamespacesStackType&      theCurrentNamespaces,
00239             StylesheetConstructionContext&  theConstructionContext);
00240 
00247     void
00248     postConstruction(
00249             const XalanDOMString&       theElementName = XalanDOMString(),
00250             const NamespacesHandler*    parentNamespacesHandler = 0);
00251 
00252     NamespacesHandler&
00253     operator=(const NamespacesHandler&  theRHS);
00254 
00263     bool
00264     shouldExcludeResultNamespaceNode(
00265             const XalanDOMString&   theXSLTNamespaceURI,
00266             const XalanDOMString&   thePrefix,
00267             const XalanDOMString&   theURI) const;
00268 
00276     bool
00277     hasExcludedPrefix(const XalanDOMString&     thePrefix) const
00278     {
00279         return m_excludedResultPrefixes.count(thePrefix) != 0 ? true : false;
00280     }
00281 
00287     void
00288     addExtensionNamespaceURI(const XalanDOMString&  theURI)
00289     {
00290         m_extensionNamespaceURIs.insert(theURI);
00291     }
00292 
00299     const XalanDOMString&
00300     getNamespace(const XalanDOMString&  thePrefix) const;
00301 
00308     const XalanDOMString&
00309     getNamespaceAlias(const XalanDOMString&     theStylesheetNamespace) const;
00310 
00317     void
00318     setNamespaceAlias(
00319             const XalanDOMString&   theStylesheetNamespace,
00320             const XalanDOMString&   theResultNamespace)
00321     {
00322         m_namespaceAliases[theStylesheetNamespace] = theResultNamespace;
00323     }
00324 
00330     void
00331     copyNamespaceAliases(const NamespacesHandler&   parentNamespacesHandler);
00332 
00338     void
00339     outputResultNamespaces(StylesheetExecutionContext&  theExecutionContext) const;
00340 
00344     void
00345     clear();
00346 
00352     void
00353     swap(NamespacesHandler&     theOther);
00354 
00355     bool
00356     getProcessNamespaceAliaises() const
00357     {
00358         return m_processAliases;
00359     }
00360 
00361     void
00362     setProcessNamespaceAliaises(bool    fValue)
00363     {
00364         m_processAliases = fValue;
00365     }
00366 
00367 private:
00368 
00372     void
00373     createResultAttributeNames();
00374 
00380     void
00381     processExcludeResultPrefixes(const XalanDOMString&  theElementPrefix);
00382 
00386     void
00387     processNamespaceAliases();
00388 
00394     void
00395     copyNamespaceAliases(const NamespaceAliasesMapType&     theNamespaceAliases);
00396 
00402     void
00403     copyExtensionNamespaceURIs(const ExtensionNamespaceURISetType&  theExtensionNamespaceURIs);
00404 
00410     void
00411     copyExcludeResultPrefixes(const ExcludedResultPrefixesMapType&  theExcludeResultPrefixes);
00412 
00422     bool
00423     shouldExcludeResultNamespaceNode(
00424             const XalanDOMString&       theXSLTNamespaceURI,
00425             const NamespacesHandler&    parentNamespacesHandler,
00426             const NameSpace&            theNamespace) const;
00427 
00428     // Not implemented...
00429     bool
00430     operator==(const NamespacesHandler&) const;
00431 
00432     // Data members...
00433     ExcludedResultPrefixesMapType   m_excludedResultPrefixes;
00434 
00435     NamespacesMapType               m_namespaceDeclarations;
00436 
00437     ExtensionNamespaceURISetType    m_extensionNamespaceURIs;
00438 
00439     NamespaceAliasesMapType         m_namespaceAliases;
00440 
00441     // If true namespace aliases will be processed.  If false, they will not.
00442     bool                            m_processAliases;
00443 
00444     const static XalanDOMString     s_dummyEmptyString;
00445 };
00446 
00447 
00448 
00449 #endif  // XALAN_NAMESPACESHANDLER_HEADER_GUARD

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