RVNGStream.h
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
2 /* librevenge
3  * Version: MPL 2.0 / LGPLv2.1+
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  * Major Contributor(s):
10  * Copyright (C) 2004-2005 William Lachance (wrlach@gmail.com)
11  *
12  * For minor contributions see the git repository.
13  *
14  * Alternatively, the contents of this file may be used under the terms
15  * of the GNU Lesser General Public License Version 2.1 or later
16  * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
17  * applicable instead of those above.
18  */
19 
20 #ifndef RVNGSTREAM_H
21 #define RVNGSTREAM_H
22 
23 namespace librevenge
24 {
25 
27 {
31 };
32 
34 {
35 public:
37  virtual ~RVNGInputStream() {}
38 
44  virtual bool isStructured() = 0;
45 
46  virtual unsigned subStreamCount() = 0;
47 
48  virtual const char *subStreamName(unsigned id) = 0;
49 
50  virtual bool existsSubStream(const char *name) = 0;
51 
58  virtual RVNGInputStream *getSubStreamByName(const char *name) = 0;
59 
60  virtual RVNGInputStream *getSubStreamById(unsigned id) = 0;
61 
69  virtual const unsigned char *read(unsigned long numBytes, unsigned long &numBytesRead) = 0;
70 
81  virtual int seek(long offset, RVNG_SEEK_TYPE seekType) = 0;
82 
87  virtual long tell() = 0;
88 
94  virtual bool isEnd() = 0;
95 };
96 
97 }
98 
99 #endif
100 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */
RVNGInputStream()
Definition: RVNGStream.h:36
Definition: RVNGBinaryData.cpp:38
virtual int seek(long offset, RVNG_SEEK_TYPE seekType)=0
Moves to the next location inside the input stream.
virtual const unsigned char * read(unsigned long numBytes, unsigned long &numBytesRead)=0
Tries to read a given number of bytes starting from the current position inside the input stream...
virtual RVNGInputStream * getSubStreamByName(const char *name)=0
Extracts a named stream from an OLE2 storage.
Definition: RVNGStream.h:29
unsigned offset
Definition: RVNGZipStream.cpp:77
virtual bool isStructured()=0
Analyses the content of the input stream to see whether it is an OLE2 storage.
virtual RVNGInputStream * getSubStreamById(unsigned id)=0
Definition: RVNGStream.h:28
virtual const char * subStreamName(unsigned id)=0
RVNG_SEEK_TYPE
Definition: RVNGStream.h:26
virtual bool isEnd()=0
Determines whether the current position is at the end of the stream.
virtual long tell()=0
Returns the actual position inside the input stream.
virtual ~RVNGInputStream()
Definition: RVNGStream.h:37
Definition: RVNGStream.h:33
virtual unsigned subStreamCount()=0
Definition: RVNGStream.h:30
virtual bool existsSubStream(const char *name)=0

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