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00024 #ifndef __CS_CSUTIL_PARASITICDATABUFFER_H__
00025 #define __CS_CSUTIL_PARASITICDATABUFFER_H__
00026
00027 #include "csextern.h"
00028 #include "csutil/pooledscfclass.h"
00029 #include "csutil/scf_implementation.h"
00030 #include "iutil/databuff.h"
00031
00035 class csParasiticDataBufferBase :
00036 public scfImplementation1<csParasiticDataBufferBase, iDataBuffer>
00037 {
00038 protected:
00039 csRef<iDataBuffer> parentBuffer;
00040 uint8* data;
00041 size_t size;
00042
00043 void SetContents (iDataBuffer* parent, size_t offs, size_t size)
00044 {
00045 parentBuffer = parent;
00046 data = parent->GetUint8 () + offs;
00047 size_t parRemaining = parent->GetSize () - offs;
00048 if (size == (size_t)~0)
00049 csParasiticDataBufferBase::size = parRemaining;
00050 else
00051 csParasiticDataBufferBase::size = MIN(size, parRemaining);
00052 }
00053
00054 csParasiticDataBufferBase (iDataBuffer* parent, size_t offs,
00055 size_t size = (size_t)~0) : scfImplementationType (this)
00056 {
00057 SetContents (parent, offs, size);
00058 }
00059
00060 csParasiticDataBufferBase ()
00061 : scfImplementationType (this), data(0), size(0)
00062 {}
00063 public:
00064 virtual ~csParasiticDataBufferBase () { }
00065
00066 virtual size_t GetSize () const
00067 { return size; }
00068 virtual char* GetData () const
00069 { return (char*)data; }
00070 inline char *operator * () const
00071 { return (char *)GetData (); }
00072 inline int8* GetInt8 ()
00073 { return (int8 *)GetData (); }
00074 inline uint8* GetUint8 ()
00075 { return (uint8 *)GetData (); }
00076 };
00077
00081 class csParasiticDataBuffer
00082 : public scfImplementationExt0<csParasiticDataBuffer,
00083 csParasiticDataBufferBase>
00084 {
00085 public:
00094 csParasiticDataBuffer (iDataBuffer* parent, size_t offs,
00095 size_t size = (size_t)~0)
00096 : scfImplementationType (this, parent, offs, size)
00097 {
00098 }
00099
00100 virtual ~csParasiticDataBuffer ()
00101 {
00102 }
00103 };
00104
00116 class csParasiticDataBufferPooled :
00117 public scfImplementationPooled<
00118 scfImplementationExt0<csParasiticDataBufferPooled,
00119 csParasiticDataBufferBase> >
00120 {
00121 public:
00130 csParasiticDataBufferPooled (iDataBuffer* parent, size_t offs,
00131 size_t size = (size_t)~0) : scfPooledImplementationType (this, parent,
00132 offs, size) { }
00133 };
00134
00135 #endif // __CS_CSUTIL_PARASITICDATABUFFER_H__