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EndianReader.d

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00001 /*******************************************************************************
00002 
00003         @file EndianReader.d
00004         
00005         Copyright (c) 2004 Kris Bell
00006         
00007         This software is provided 'as-is', without any express or implied
00008         warranty. In no event will the authors be held liable for damages
00009         of any kind arising from the use of this software.
00010         
00011         Permission is hereby granted to anyone to use this software for any 
00012         purpose, including commercial applications, and to alter it and/or 
00013         redistribute it freely, subject to the following restrictions:
00014         
00015         1. The origin of this software must not be misrepresented; you must 
00016            not claim that you wrote the original software. If you use this 
00017            software in a product, an acknowledgment within documentation of 
00018            said product would be appreciated but is not required.
00019 
00020         2. Altered source versions must be plainly marked as such, and must 
00021            not be misrepresented as being the original software.
00022 
00023         3. This notice may not be removed or altered from any distribution
00024            of the source.
00025 
00026         4. Derivative works are permitted, but they must carry this notice
00027            in full and credit the original source.
00028 
00029 
00030                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00031 
00032 
00033         @version        Initial version, March 2004      
00034         @author         Kris
00035 
00036 
00037 *******************************************************************************/
00038 
00039 module mango.io.EndianReader;
00040 
00041 public  import  mango.io.Reader;
00042 
00043 private import  mango.sys.Type,
00044                 mango.sys.ByteSwap;
00045 
00046 /*******************************************************************************
00047 
00048 *******************************************************************************/
00049 
00050 class EndianReader : Reader
00051 {       
00052         /***********************************************************************
00053         
00054                 Construct EndianWriter upon the given IBuffer
00055 
00056         ***********************************************************************/
00057 
00058         this (IBuffer buffer)
00059         {
00060                 super (buffer);
00061         }
00062 
00063         /***********************************************************************
00064         
00065         ***********************************************************************/
00066 
00067         override uint read (void* dst, uint bytes, uint type)
00068         {
00069                 super.read (dst, bytes, type);
00070 
00071                 switch (type)
00072                        {
00073                        case Type.Short:
00074                        case Type.UShort:
00075                        case Type.Utf16:
00076                             ByteSwap.swap16 (dst, bytes);    
00077                             break;
00078 
00079                        case Type.Int:
00080                        case Type.UInt:
00081                        case Type.Float:
00082                        case Type.Utf32:
00083                             ByteSwap.swap32 (dst, bytes);      
00084                             break;
00085 
00086                        case Type.Long:
00087                        case Type.ULong:
00088                        case Type.Double:
00089                             ByteSwap.swap64 (dst, bytes);
00090                             break;
00091 
00092                        case Type.Real:
00093                             ByteSwap.swap80 (dst, bytes);
00094                             break;
00095 
00096                        default:
00097                             break;
00098                        }
00099 
00100                 return bytes;
00101         }
00102 }

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