93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file subStream.h
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* @author drose
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* @date 2002-08-02
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*/
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#ifndef SUBSTREAM_H
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#define SUBSTREAM_H
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#include "pandabase.h"
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#include "subStreamBuf.h"
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#include "streamWrapper.h"
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/**
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* An istream object that presents a subwindow into another istream. The
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* first character read from this stream will be the "start" character from
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* the source istream; just before the file pointer reaches the "end"
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* character, eof is returned.
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*
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* The source stream must be one that we can randomly seek within. The
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* resulting ISubStream will also support arbitrary seeks.
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*/
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class EXPCL_PANDAEXPRESS ISubStream : public istream {
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PUBLISHED:
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INLINE ISubStream();
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INLINE ISubStream(IStreamWrapper *source, streampos start, streampos end);
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#if _MSC_VER >= 1800
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INLINE ISubStream(const ISubStream ©) = delete;
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#endif
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INLINE ISubStream &open(IStreamWrapper *source, streampos start, streampos end);
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INLINE ISubStream &close();
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private:
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SubStreamBuf _buf;
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};
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/**
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* An ostream object that presents a subwindow into another ostream. The
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* first character written to this stream will be the "start" character in the
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* dest istream; no characters may be written to character "end" or later
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* (unless end is zero).
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*
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* The dest stream must be one that we can randomly seek within. The
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* resulting OSubStream will also support arbitrary seeks.
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*/
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class EXPCL_PANDAEXPRESS OSubStream : public ostream {
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PUBLISHED:
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INLINE OSubStream();
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INLINE OSubStream(OStreamWrapper *dest, streampos start, streampos end, bool append = false);
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#if _MSC_VER >= 1800
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INLINE OSubStream(const OSubStream ©) = delete;
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#endif
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INLINE OSubStream &open(OStreamWrapper *dest, streampos start, streampos end, bool append = false);
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INLINE OSubStream &close();
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private:
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SubStreamBuf _buf;
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};
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/**
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* Combined ISubStream and OSubStream for bidirectional I/O.
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*/
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class EXPCL_PANDAEXPRESS SubStream : public iostream {
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PUBLISHED:
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INLINE SubStream();
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INLINE SubStream(StreamWrapper *nested, streampos start, streampos end, bool append = false);
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#if _MSC_VER >= 1800
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INLINE SubStream(const SubStream ©) = delete;
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#endif
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INLINE SubStream &open(StreamWrapper *nested, streampos start, streampos end, bool append = false);
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INLINE SubStream &close();
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private:
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SubStreamBuf _buf;
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};
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#include "subStream.I"
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#endif
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