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# ByteOrderDataInStream.h

    00001 /**********************************************************************
    00002  * $Id: ByteOrderDataInStream.h 2579 2009-06-15 14:03:52Z strk $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2005-2006 Refractions Research Inc.
    00008  * Copyright (C) 2001-2002 Vivid Solutions Inc.
    00009  *
    00010  * This is free software; you can redistribute and/or modify it under
    00011  * the terms of the GNU Lesser General Public Licence as published
    00012  * by the Free Software Foundation.
    00013  * See the COPYING file for more information.
    00014  *
    00015  **********************************************************************
    00016  *
    00017  * Last port: io/ByteOrderDataInStream.java rev. 1.1 (JTS-1.10)
    00018  *
    00019  **********************************************************************/
    00020
    00021 #ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H
    00022 #define GEOS_IO_BYTEORDERDATAINSTREAM_H
    00023
    00024 #include <geos/export.h>
    00025
    00026 //#include <geos/platform.h>
    00027 //#include <geos/io/ParseException.h>
    00028 //#include <geos/io/ByteOrderValues.h>
    00029 #include <geos/inline.h>
    00030
    00031 #include <iosfwd> // ostream, istream (if we remove inlines)
    00032
    00033 namespace geos {
    00034 namespace io {
    00035
    00036 /*
    00037  * \class ByteOrderDataInStream io.h geos.h
    00038  *
    00039  * Allows reading an stream of primitive datatypes from an underlying
    00040  * istream, with the representation being in either common byte ordering.
    00041  *
    00042  */
    00043 class GEOS_DLL ByteOrderDataInStream {
    00044
    00045 public:
    00046
    00047         ByteOrderDataInStream(std::istream *s=NULL);
    00048
    00049         ~ByteOrderDataInStream();
    00050
    00055         void setInStream(std::istream *s);
    00056
    00057         void setOrder(int order);
    00058
    00059         unsigned char readByte(); // throws ParseException
    00060
    00061         int readInt(); // throws ParseException
    00062
    00063         long readLong(); // throws ParseException
    00064
    00065         double readDouble(); // throws ParseException
    00066
    00067 private:
    00068         int byteOrder;
    00069         std::istream *stream;
    00070
    00071         // buffers to hold primitive datatypes
    00072         unsigned char buf[8];
    00073
    00074 };
    00075
    00076 } // namespace io
    00077 } // namespace geos
    00078
    00079 #ifdef GEOS_INLINE
    00080 #include <geos/io/ByteOrderDataInStream.inl>
    00081 #endif
    00082
    00083 #endif // #ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H
    00084
    00085 /**********************************************************************
    00086  * $Log$
    00087  * Revision 1.2  2006/03/28 11:26:13  strk
    00088  * ByteOrderDataInStream inlines moved to .inl file, updated
    00089  * implementation files includes.
    00090  *
    00091  * Revision 1.1  2006/03/20 18:18:14  strk
    00092  * io.h header split
    00093  *
    00094  **********************************************************************/