src/stream/ZStream_Base64.h

00001 /*  @(#) $Id: ZStream_Base64.h,v 1.7 2006/04/27 03:19:32 agreen Exp $ */
00002 
00003 /* ------------------------------------------------------------
00004 Copyright (c) 2000 Andrew Green and Learning in Motion, Inc.
00005 http://www.zoolib.org
00006 
00007 Permission is hereby granted, free of charge, to any person obtaining a copy
00008 of this software and associated documentation files (the "Software"), to deal
00009 in the Software without restriction, including without limitation the rights
00010 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00011 copies of the Software, and to permit persons to whom the Software is
00012 furnished to do so, subject to the following conditions:
00013 
00014 The above copyright notice and this permission notice shall be included in
00015 all copies or substantial portions of the Software.
00016 
00017 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00018 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00019 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00020 COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
00021 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
00022 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00023 ------------------------------------------------------------ */
00024 
00025 #ifndef __ZStream_Base64__
00026 #define __ZStream_Base64__ 1
00027 #include "zconfig.h"
00028 
00029 #include "ZStream.h"
00030 
00031 // =================================================================================================
00032 #pragma mark -
00033 #pragma mark * ZStreamR_Base64Encode
00034 
00037 class ZStreamR_Base64Encode : public ZStreamR
00038         {
00039 public:
00040         ZStreamR_Base64Encode(const ZStreamR& iStreamSource);
00041         ~ZStreamR_Base64Encode();
00042 
00043 // From ZStreamR
00044         virtual void Imp_Read(void* iDest, size_t iCount, size_t* oCountRead);
00045 
00046 protected:
00047         const ZStreamR& fStreamSource;
00048         uint8 fSinkBuf[4];
00049         size_t fSinkCount;
00050         };
00051 
00052 // =================================================================================================
00053 #pragma mark -
00054 #pragma mark * ZStreamR_Base64Decode
00055 
00059 class ZStreamR_Base64Decode : public ZStreamR
00060         {
00061 public:
00062         ZStreamR_Base64Decode(const ZStreamR& iStreamSource);
00063         ~ZStreamR_Base64Decode();
00064 
00065 // From ZStreamR
00066         virtual void Imp_Read(void* iDest, size_t iCount, size_t* oCountRead);
00067 
00068 protected:
00069         const ZStreamR& fStreamSource;
00070         uint8 fSinkBuf[3];
00071         size_t fSinkCount;
00072         };
00073 
00074 // =================================================================================================
00075 #pragma mark -
00076 #pragma mark * ZStreamW_Base64Encode
00077 
00081 class ZStreamW_Base64Encode : public ZStreamW
00082         {
00083 public:
00084         ZStreamW_Base64Encode(const ZStreamW& iStreamSink);
00085         ~ZStreamW_Base64Encode();
00086 
00087 // From ZStreamW
00088         virtual void Imp_Write(const void* iSource, size_t iCount, size_t* oCountWritten);
00089         virtual void Imp_Flush();
00090 
00091 protected:
00092         const ZStreamW& fStreamSink;
00093         uint8 fSourceBuf[3];
00094         size_t fSourceCount;
00095         };
00096 
00097 // =================================================================================================
00098 #pragma mark -
00099 #pragma mark * ZStreamW_Base64Decode
00100 
00101 /*** A write filter stream that writes to the destination stream the binary
00102 equivalent of base64 data written to it. */
00103 
00104 class ZStreamW_Base64Decode : public ZStreamW
00105         {
00106 public:
00107         ZStreamW_Base64Decode(const ZStreamW& iStreamSink);
00108         ~ZStreamW_Base64Decode();
00109 
00110 // From ZStreamW
00111         virtual void Imp_Write(const void* iSource, size_t iCount, size_t* oCountWritten);
00112         virtual void Imp_Flush();
00113 
00114 protected:
00115         const ZStreamW& fStreamSink;
00116         uint32 fSource;
00117         size_t fSourceCount;
00118         };
00119 
00120 // =================================================================================================
00121 
00122 #endif // __ZStream_Base64__

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