BitShares-Core  5.0.0
BitShares blockchain implementation and command-line interface software
padding_ostream.hpp
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24 #pragma once
25 
26 namespace graphene { namespace utilities {
27 
28 template<size_t BlockSize=16, char PaddingChar=' '>
30 public:
31  padding_ostream( fc::ostream_ptr o, size_t bufsize = 4096 ) : buffered_ostream(o, bufsize) {}
32  virtual ~padding_ostream() {}
33 
34  virtual size_t writesome( const char* buffer, size_t len ) {
35  auto out = buffered_ostream::writesome(buffer, len);
36  bytes_out += out;
37  bytes_out %= BlockSize;
38  return out;
39  }
40  virtual size_t writesome( const std::shared_ptr<const char>& buf, size_t len, size_t offset ) {
41  auto out = buffered_ostream::writesome(buf, len, offset);
42  bytes_out += out;
43  bytes_out %= BlockSize;
44  return out;
45  }
46  virtual void flush() {
47  static const char pad = PaddingChar;
48  while( bytes_out % BlockSize )
49  writesome(&pad, 1);
50  buffered_ostream::flush();
51  }
52 
53 private:
54  size_t bytes_out = 0;
55 };
56 
57 } } //graphene::utilities
58 
Definition: api.cpp:56
virtual size_t writesome(const std::shared_ptr< const char > &buf, size_t len, size_t offset)
padding_ostream(fc::ostream_ptr o, size_t bufsize=4096)
buffered_ostream(ostream_ptr o, size_t bufsize=4096)
virtual size_t writesome(const char *buffer, size_t len)
std::shared_ptr< ostream > ostream_ptr
Definition: iostream.hpp:59