pipe_io.cpp

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/*
* Pipe I/O
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#include <botan/pipe.h>
#include <iostream>
 
namespace Botan {
 
/*
* Write data from a pipe into an ostream
*/
std::ostream& operator<<(std::ostream& stream, Pipe& pipe)
   {
   SecureVector<byte> buffer(DEFAULT_BUFFERSIZE);
   while(stream.good() && pipe.remaining())
      {
      size_t got = pipe.read(&buffer[0], buffer.size());
      stream.write(reinterpret_cast<const char*>(&buffer[0]), got);
      }
   if(!stream.good())
      throw Stream_IO_Error("Pipe output operator (iostream) has failed");
   return stream;
   }
 
/*
* Read data from an istream into a pipe
*/
std::istream& operator>>(std::istream& stream, Pipe& pipe)
   {
   SecureVector<byte> buffer(DEFAULT_BUFFERSIZE);
   while(stream.good())
      {
      stream.read(reinterpret_cast<char*>(&buffer[0]), buffer.size());
      pipe.write(&buffer[0], stream.gcount());
      }
   if(stream.bad() || (stream.fail() && !stream.eof()))
      throw Stream_IO_Error("Pipe input operator (iostream) has failed");
   return stream;
   }
 
}