Line data    Source code

       1              : // go-sha1.h -- GCC specific sha1 checksum utilities.   -*- C++ -*-
       2              : 
       3              : // Copyright 2016 The Go Authors. All rights reserved.
       4              : // Use of this source code is governed by a BSD-style
       5              : // license that can be found in the LICENSE file.
       6              : 
       7              : #ifndef GO_SHA1_H
       8              : #define GO_SHA1_H
       9              : 
      10              : #include "go-system.h"
      11              : 
      12              : //
      13              : // Interface class for computation of SHA1 checksums. Front end requests
      14              : // one of these objects from the back end to use for computing
      15              : // checksums (each back end tends to have a different SHA1 implementation).
      16              : // Back ends are expected to create a new class that derives from this
      17              : // one containing an implementation.
      18              : //
      19              : 
      20         8580 : class Go_sha1_helper
      21              : {
      22              :  public:
      23         4328 :   virtual ~Go_sha1_helper() { }
      24              :   virtual void process_bytes(const void* buffer, size_t len) = 0;
      25              :   virtual std::string finish() = 0;
      26              :   static const int checksum_len = 20;
      27              : };
      28              : 
      29              : // Call to create and return a new sha1 helper (this routine defined
      30              : // by the backend). Caller is responsible for deletion.
      31              : extern Go_sha1_helper* go_create_sha1_helper();
      32              : 
      33              : #endif // !defined(GO_SHA1_H)