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ICUBridgeCollationCompareFunctorImpl.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  *
00005  * Copyright (c) 1999-2004 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
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00032  * 5. Products derived from this software may not be called "Apache",
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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
00053  * Business Machines, Inc., http://www.ibm.com.  For more
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00057 
00058 #if !defined(ICUBRIDGE_COLLATIONCOMPAREFUNCTORIMPL_GUARD_1357924680)
00059 #define ICUBRIDGE_COLLATIONCOMPAREFUNCTORIMPL_GUARD_1357924680
00060 
00061 
00062 
00063 #include <xalanc/ICUBridge/ICUBridgeDefinitions.hpp>
00064 
00065 
00066 
00067 #include <list>
00068 
00069 
00070 
00071 #include <xalanc/XSLT/StylesheetExecutionContextDefault.hpp>
00072 
00073 
00074 
00075 #include <unicode/coll.h>
00076 
00077 
00078 
00079 
00080 XALAN_CPP_NAMESPACE_BEGIN
00081 
00082 
00083 
00084 class XALAN_ICUBRIDGE_EXPORT ICUBridgeCollationCompareFunctorImpl : public XalanCollationServices::CollationCompareFunctor
00085 {
00086 public:
00087 
00093     ICUBridgeCollationCompareFunctorImpl(bool   fCacheCollators = false);
00094 
00095     ~ICUBridgeCollationCompareFunctorImpl();
00096 
00097     int
00098 	operator()(
00099             const XalanDOMChar*                 theLHS,
00100             const XalanDOMChar*                 theRHS,
00101             XalanCollationServices::eCaseOrder  theCaseOrder = XalanCollationServices::eDefault) const;
00102 
00103     int
00104 	operator()(
00105             const XalanDOMChar*                 theLHS,
00106             const XalanDOMChar*                 theRHS,
00107             const XalanDOMChar*                 theLocale,
00108             XalanCollationServices::eCaseOrder  theCaseOrder = XalanCollationServices::eDefault) const;
00109 
00110     bool
00111     isValid() const
00112     {
00113         return m_isValid;
00114     }
00115 
00116 #if defined(XALAN_HAS_CPP_NAMESPACE)
00117     typedef U_ICU_NAMESPACE::Collator   CollatorType;
00118 #else
00119     typedef Collator                    CollatorType;
00120 #endif
00121 
00122     struct CollationCacheStruct
00123     {
00124         CollationCacheStruct(
00125                 const XalanDOMString&   theLocale,
00126                 CollatorType*           theCollator) :
00127             m_locale(theLocale),
00128             m_collator(theCollator)
00129         {
00130         }
00131 
00132         CollationCacheStruct() :
00133             m_locale(),
00134             m_collator(0)
00135         {
00136         }
00137 
00138         void
00139         swap(CollationCacheStruct&  theOther)
00140         {
00141             m_locale.swap(theOther.m_locale);
00142 
00143             CollatorType* const     theTemp = m_collator;
00144 
00145             m_collator = theOther.m_collator;
00146 
00147             theOther.m_collator = theTemp;
00148         }
00149 
00150 #if defined(XALAN_NO_SELECTIVE_TEMPLATE_INSTANTIATION)
00151         bool
00152         operator<(const CollationCacheStruct&  theRHS) const
00153         {
00154             return this < &theRHS;
00155         }
00156 
00157         bool
00158         operator==(const CollationCacheStruct&  theRHS) const
00159         {
00160             return this == &theRHS;
00161         }
00162 #endif
00163 
00164         XalanDOMString  m_locale;
00165 
00166         CollatorType*   m_collator;
00167 
00168         struct CollatorDeleteFunctor
00169         {
00170             void
00171             operator()(CollationCacheStruct&    theStruct) const
00172             {
00173                 delete theStruct.m_collator;
00174             }
00175         };
00176 
00177         struct CollatorFindFunctor
00178         {
00179             CollatorFindFunctor(const XalanDOMChar* theLocale) :
00180                 m_locale(theLocale)
00181             {
00182             }
00183 
00184             bool
00185             operator()(CollationCacheStruct&    theStruct) const
00186             {
00187                 return XalanDOMString::equals(theStruct.m_locale ,m_locale);
00188             }
00189 
00190             const XalanDOMChar* const   m_locale;
00191         };
00192     };
00193 
00194 #if defined(XALAN_NO_STD_NAMESPACE)
00195     typedef list<CollationCacheStruct>          CollatorCacheListType;
00196 #else
00197     typedef std::list<CollationCacheStruct>     CollatorCacheListType;
00198 #endif
00199 
00200     enum { eCacheMax = 10 };
00201 
00202 private:
00203 
00204     int
00205     doDefaultCompare(
00206             const XalanDOMChar*     theLHS,
00207             const XalanDOMChar*     theRHS) const;
00208 
00209     int
00210     doCompare(
00211             const XalanDOMChar*                 theLHS,
00212             const XalanDOMChar*                 theRHS,
00213             const XalanDOMChar*                 theLocale,
00214             XalanCollationServices::eCaseOrder  theCaseOrder) const;
00215 
00216     int
00217     doCompareCached(
00218             const XalanDOMChar*                 theLHS,
00219             const XalanDOMChar*                 theRHS,
00220             const XalanDOMChar*                 theLocale,
00221             XalanCollationServices::eCaseOrder  theCaseOrder) const;
00222 
00223     int
00224     doCompare(
00225             const CollatorType&     theCollator,
00226             const XalanDOMChar*     theLHS,
00227             const XalanDOMChar*     theRHS) const;
00228 
00229     int
00230     doCompare(
00231             CollatorType&                       theCollator,
00232             const XalanDOMChar*                 theLHS,
00233             const XalanDOMChar*                 theRHS,
00234             XalanCollationServices::eCaseOrder  theCaseOrder) const;
00235 
00236     CollatorType*
00237     getCachedCollator(const XalanDOMChar*   theLocale) const;
00238 
00239     void
00240     cacheCollator(
00241             CollatorType*           theCollator,
00242             const XalanDOMChar*     theLocale) const;
00243 
00244 
00245     // Data members...
00246     bool                            m_isValid;
00247 
00248     CollatorType*                   m_defaultCollator;
00249 
00250     XalanDOMString                  m_defaultCollatorLocaleName;
00251 
00252     bool                            m_cacheCollators;
00253 
00254     mutable CollatorCacheListType   m_collatorCache;
00255 
00256     static const StylesheetExecutionContextDefault::DefaultCollationCompareFunctor  s_defaultFunctor;
00257 };
00258 
00259 
00260 
00261 XALAN_CPP_NAMESPACE_END
00262 
00263 
00264 
00265 #endif  // ICUBRIDGE_COLLATIONCOMPAREFUNCTORIMPL_GUARD_1357924680

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