SDNV.h

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00001 /*
00002  *    Copyright 2005-2006 Intel Corporation
00003  * 
00004  *    Licensed under the Apache License, Version 2.0 (the "License");
00005  *    you may not use this file except in compliance with the License.
00006  *    You may obtain a copy of the License at
00007  * 
00008  *        http://www.apache.org/licenses/LICENSE-2.0
00009  * 
00010  *    Unless required by applicable law or agreed to in writing, software
00011  *    distributed under the License is distributed on an "AS IS" BASIS,
00012  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *    See the License for the specific language governing permissions and
00014  *    limitations under the License.
00015  */
00016 
00017 #ifndef _SDNV_H_
00018 #define _SDNV_H_
00019 
00020 #include <oasys/compat/inttypes.h>
00021 
00022 #ifdef __cplusplus
00023 
00024 namespace dtn {
00025 
00043 class SDNV {
00044 public:
00049     static const size_t MAX_LENGTH = 10;
00050     
00054     static size_t encoding_len(u_int64_t val);
00055     
00061     static int encode(u_int64_t val, u_char* bp, size_t len);
00062     
00069     static int decode(const u_char* bp, size_t len, u_int64_t* val);
00070 
00077     static int decode(const u_char* bp, size_t len, u_int32_t* val)
00078     {
00079         u_int64_t lval;
00080         int ret = decode(bp, len, &lval);
00081         
00082         if (lval > 0xffffffffLL) {
00083             return -1;
00084         }
00085 
00086         *val = (u_int32_t)lval;
00087         
00088         return ret;
00089     }
00090 };
00091 
00092 } // namespace dtn
00093 
00094 #endif /* __cplusplus */
00095 
00096 #endif /* _SDNV_H_ */

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