SDNV.h

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00001 /*
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00005  * install, copy or use the software.
00006  * 
00007  * Intel Open Source License 
00008  * 
00009  * Copyright (c) 2005 Intel Corporation. All rights reserved. 
00010  * 
00011  * Redistribution and use in source and binary forms, with or without
00012  * modification, are permitted provided that the following conditions are
00013  * met:
00014  * 
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00016  *   notice, this list of conditions and the following disclaimer.
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00018  *   Redistributions in binary form must reproduce the above copyright
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00024  *   this software without specific prior written permission.
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00038 #ifndef _SDNV_H_
00039 #define _SDNV_H_
00040 
00041 #include <oasys/compat/inttypes.h>
00042 
00043 namespace dtn {
00044 
00062 class SDNV {
00063 public:
00067     static size_t encoding_len(u_int64_t val);
00068     
00074     static int encode(u_int64_t val, u_char* bp, size_t len);
00075     
00082     static int decode(const u_char* bp, size_t len, u_int64_t* val);
00083 
00090     static int decode(const u_char* bp, size_t len, u_int32_t* val)
00091     {
00092         u_int64_t lval;
00093         int ret = decode(bp, len, &lval);
00094         
00095         if (lval > 0xffffffffLL) {
00096             return -1;
00097         }
00098 
00099         *val = (u_int32_t)lval;
00100         
00101         return ret;
00102     }
00103 };
00104 
00105 } // namespace dtn
00106 
00107 #endif /* _SDNV_H_ */

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