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.base.ByteSwap; 00044 00045 /******************************************************************************* 00046 00047 A pair of classes to handle byte-swapping for integral types. The 00048 basic EndianReader is transparent, whilst EndianReaderSwap is not. 00049 00050 Use the static create() method to construct the appropriate reader. 00051 00052 *******************************************************************************/ 00053 00054 class EndianReader : Reader 00055 { 00056 /*********************************************************************** 00057 00058 Construct EndianReader upon the given IBuffer. 00059 00060 ***********************************************************************/ 00061 00062 this (IBuffer buffer) 00063 { 00064 super (buffer); 00065 00066 decode.int16 = 00067 decode.int16u = 00068 decode.char16 = &bits16; 00069 00070 decode.int32 = 00071 decode.int32u = 00072 decode.float32 = 00073 decode.char32 = &bits32; 00074 00075 decode.int64 = 00076 decode.int64u = 00077 decode.float64 = &bits64; 00078 00079 decode.float80 = &bits80; 00080 } 00081 00082 /*********************************************************************** 00083 00084 ***********************************************************************/ 00085 00086 final uint bits16 (void* dst, uint count) 00087 { 00088 read (dst, count); 00089 ByteSwap.swap16 (dst, count); 00090 return count; 00091 } 00092 00093 /*********************************************************************** 00094 00095 ***********************************************************************/ 00096 00097 final uint bits32 (void* dst, uint count) 00098 { 00099 read (dst, count); 00100 ByteSwap.swap32 (dst, count); 00101 return count; 00102 } 00103 00104 /*********************************************************************** 00105 00106 ***********************************************************************/ 00107 00108 final uint bits64 (void* dst, uint count) 00109 { 00110 read (dst, count); 00111 ByteSwap.swap64 (dst, count); 00112 return count; 00113 } 00114 00115 /*********************************************************************** 00116 00117 ***********************************************************************/ 00118 00119 final uint bits80 (void* dst, uint count) 00120 { 00121 read (dst, count); 00122 ByteSwap.swap80 (dst, count); 00123 return count; 00124 } 00125 }