| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, Version |
| * 2.0 (the "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef __ETCHHASH_H__ |
| #define __ETCHHASH_H__ |
| #include "common/EtchConfig.h" |
| #include "common/EtchString.h" |
| |
| class EtchHashEx { |
| public: |
| |
| static capu::uint32_t Digest(const EtchString& value) { |
| capu::uint32_t hash = 5381; |
| capu::uint32_t n = value.length(); |
| const char *str = value.c_str(); |
| for (capu::uint32_t i = 0; i < n; i++) { |
| char c = str[i]; |
| capu::uint32_t h6 = hash << 6; |
| hash = (h6 << 10) + h6 - hash + c; |
| } |
| return hash; |
| } |
| }; |
| |
| #endif |
