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 /* POLE - Portable C++ library to access OLE Storage
    Copyright (C) 2002-2005 Ariya Hidayat <ariya@kde.org>
 
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:
    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name of the authors nor the names of its contributors may be
      used to endorse or promote products derived from this software without
      specific prior written permission.
 
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
    THE POSSIBILITY OF SUCH DAMAGE.
 */
 
 #ifndef OOXML_POLE_H
 #define OOXML_POLE_H
 
 #include "komsooxml_export.h"
 
 class QIODevice;
 
 #include <string>
 #include <list>
 
 namespace OOXML_POLE
 {
 
 class StorageIO;
 class Stream;
 class StreamIO;
 
 class KOMSOOXML_EXPORT Storage
 {
     friend class Stream;
     friend class StreamOut;
 
 public:
 
     // for Storage::result()
     enum { Ok, OpenFailed, NotOLE, BadOLE, UnknownError };
 
     /**
      * Constructs a storage with name filename.
      **/
     explicit Storage(QIODevice* file);
 
     /**
      * Destroys the storage.
      **/
     ~Storage();
 
     /**
      * Opens the storage. Returns true if no error occurs.
      **/
     bool open();
 
     /**
      * Closes the storage.
      **/
     void close();
 
     /**
      * Returns the error code of last operation.
      **/
     int result();
 
     /**
      * Finds all stream and directories in given path.
      **/
     std::list<std::string> entries(const std::string& path = "/");
 
     /**
      * Returns true if specified entry name is a directory.
      */
     bool isDirectory(const std::string& name);
 
     /**
      * Finds and returns a stream with the specified name.
      * If reuse is true, this function returns the already created stream
      * (if any). Otherwise it will create the stream.
      *
      * When errors occur, this function returns nullptr.
      *
      * You do not need to delete the created stream, it will be handled
      * automatically.
      **/
     Stream* stream(const std::string& name, bool reuse = true);
     //Stream* stream( const std::string& name, int mode = Stream::ReadOnly, bool reuse = true );
 
 private:
     StorageIO* io;
 
     // no copy or assign
     Storage(const Storage&);
     Storage& operator=(const Storage&);
 
 };
 
 class KOMSOOXML_EXPORT Stream
 {
     friend class Storage;
     friend class StorageIO;
 
 public:
 
     /**
      * Creates a new stream.
      */
     // name must be absolute, e.g "/Workbook"
     Stream(Storage* storage, const std::string& name);
 
     /**
      * Destroys the stream.
      */
     ~Stream();
 
     /**
      * Returns the full stream name.
      */
     std::string fullName();
 
     /**
      * Returns the stream size.
      **/
     unsigned long size();
 
     /**
      * Returns the current read/write position.
      **/
     unsigned long tell();
 
     /**
      * Sets the read/write position.
      **/
     void seek(unsigned long pos);
 
     /**
      * Reads a byte.
      **/
     int getch();
 
     /**
      * Reads a block of data.
      **/
     unsigned long read(unsigned char* data, unsigned long maxlen);
 
     /**
      * Returns true if the read/write position is past the file.
      **/
     bool eof();
 
     /**
      * Returns true whenever error occurs.
      **/
     bool fail();
 
 private:
     StreamIO* io;
 
     // no copy or assign
     Stream(const Stream&);
     Stream& operator=(const Stream&);
 };
 
 }
 
 #endif // POLE_H