hasher.h

Go to the documentation of this file.

/*
 * Copyright 2010 Google Inc.
 *
 * Licensed 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 PAGESPEED_KERNEL_BASE_HASHER_H_
#define PAGESPEED_KERNEL_BASE_HASHER_H_

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/base/string_util.h"

namespace net_instaweb {

class Hasher {
 public:
  explicit Hasher(int max_chars);
  virtual ~Hasher();

  GoogleString Hash(const StringPiece& content) const;

  int HashSizeInChars() const;

  uint64 HashToUint64(const StringPiece& content) const;

  virtual GoogleString RawHash(const StringPiece& content) const = 0;

  virtual int RawHashSizeInBytes() const = 0;

 private:
  int max_chars_; 

  
};

}  

#endif