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/*
* CStream.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
VCMI_LIB_NAMESPACE_BEGIN
class DLL_LINKAGE CStream : private boost::noncopyable
{
public:
/**
* D-tor.
*/
virtual ~CStream() = default;
/**
* Seeks to the specified position.
*
* @param position The position from the beginning.
* @return the position actually moved to, -1 on error.
*/
virtual si64 seek(si64 position) = 0;
/**
* Gets the current position in the stream.
*
* @return the position.
*/
virtual si64 tell() = 0;
/**
* Relative seeks to the specified position.
*
* @param delta The count of bytes to seek from current position.
* @return the count of bytes skipped actually.
*/
virtual si64 skip(si64 delta) = 0;
/**
* Gets the length of the stream.
*
* @return the length in bytes
*/
virtual si64 getSize() = 0;
};
VCMI_LIB_NAMESPACE_END
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