# ByteOrderDataInStream.h

    00001 /**********************************************************************
    00002  * $Id: ByteOrderDataInStream.h 1820 2006-09-06 16:54:23Z mloskot $
    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 #ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H
    00018 #define GEOS_IO_BYTEORDERDATAINSTREAM_H
    00019
    00020 //#include <geos/platform.h>
    00021 //#include <geos/io/ParseException.h>
    00022 //#include <geos/io/ByteOrderValues.h>
    00023 #include <geos/inline.h>
    00024
    00025 #include <iosfwd> // ostream, istream (if we remove inlines)
    00026
    00027 namespace geos {
    00028 namespace io {
    00029
    00030 /*
    00031  * \class ByteOrderDataInStream io.h geos.h
    00032  *
    00033  * Allows reading an stream of primitive datatypes from an underlying
    00034  * istream, with the representation being in either common byte ordering.
    00035  *
    00036  */
    00037 class ByteOrderDataInStream {
    00038
    00039 public:
    00040
    00041         ByteOrderDataInStream(std::istream *s=NULL);
    00042
    00043         ~ByteOrderDataInStream();
    00044
    00049         void setInStream(std::istream *s);
    00050
    00051         void setOrder(int order);
    00052
    00053         unsigned char readByte(); // throws ParseException
    00054
    00055         int readInt(); // throws ParseException
    00056
    00057         long readLong(); // throws ParseException
    00058
    00059         double readDouble(); // throws ParseException
    00060
    00061 private:
    00062         int byteOrder;
    00063         std::istream *stream;
    00064
    00065         // buffers to hold primitive datatypes
    00066         unsigned char buf[8];
    00067
    00068 };
    00069
    00070 } // namespace io
    00071 } // namespace geos
    00072
    00073 #ifdef GEOS_INLINE
    00074 #include <geos/io/ByteOrderDataInStream.inl>
    00075 #endif
    00076
    00077 #endif // #ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H
    00078
    00079 /**********************************************************************
    00080  * $Log$
    00081  * Revision 1.2  2006/03/28 11:26:13  strk
    00082  * ByteOrderDataInStream inlines moved to .inl file, updated
    00083  * implementation files includes.
    00084  *
    00085  * Revision 1.1  2006/03/20 18:18:14  strk
    00086  * io.h header split
    00087  *
    00088  **********************************************************************/