Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  */
       9             : 
      10             : #ifndef INCLUDED_SVL_SHAREDSTRINGPOOL_HXX
      11             : #define INCLUDED_SVL_SHAREDSTRINGPOOL_HXX
      12             : 
      13             : #include <svl/sharedstring.hxx>
      14             : #include <osl/mutex.hxx>
      15             : 
      16             : #include <boost/unordered_map.hpp>
      17             : #include <boost/unordered_set.hpp>
      18             : 
      19             : class CharClass;
      20             : 
      21             : namespace svl {
      22             : 
      23             : /**
      24             :  * Storage for pool of shared strings.  It also provides mapping from
      25             :  * original-cased strings to upper-cased strings for case insensitive
      26             :  * operations.
      27             :  */
      28        1728 : class SVL_DLLPUBLIC SharedStringPool
      29             : {
      30             :     typedef boost::unordered_set<OUString, OUStringHash> StrHashType;
      31             :     typedef std::pair<StrHashType::iterator, bool> InsertResultType;
      32             :     typedef boost::unordered_map<const rtl_uString*, OUString> StrStoreType;
      33             : 
      34             :     mutable osl::Mutex maMutex;
      35             :     StrHashType maStrPool;
      36             :     StrHashType maStrPoolUpper;
      37             :     StrStoreType maStrStore;
      38             :     const CharClass* mpCharClass;
      39             : 
      40             : public:
      41             : 
      42             :     SharedStringPool( const CharClass* pCharClass );
      43             : 
      44             :     /**
      45             :      * Intern a string object into the shared string pool.
      46             :      *
      47             :      * @param rStr string object to intern.
      48             :      *
      49             :      * @return a pointer to the string object stored inside the pool, or NULL
      50             :      *         if the insertion fails.
      51             :      */
      52             :     SharedString intern( const OUString& rStr );
      53             : 
      54             :     /**
      55             :      * Go through all string objects in the pool, and clear those that are no
      56             :      * longer used outside of the pool.
      57             :      */
      58             :     void purge();
      59             : 
      60             :     size_t getCount() const;
      61             : 
      62             :     size_t getCountIgnoreCase() const;
      63             : 
      64             : private:
      65             :     InsertResultType findOrInsert( StrHashType& rPool, const OUString& rStr ) const;
      66             : };
      67             : 
      68             : }
      69             : 
      70             : #endif
      71             : 
      72             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */