topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

talk show tell print

lib-of-vs-libs-Poco-include-Poco-RandomStream.h / h



  //
  // RandomStream.h
  //
  // Id: //poco/1.3/Foundation/include/Poco/RandomStream.h#1 
  //
  // Library: Foundation
  // Package: Crypt
  // Module:  RandomStream
  //
  // Definition of class RandomInputStream.
  //
  // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // Permission is hereby granted, free of charge, to any person or organization
  // obtaining a copy of the software and accompanying documentation covered by
  // this license (the "Software") to use, reproduce, display, distribute,
  // execute, and transmit the Software, and to prepare derivative works of the
  // Software, and to permit third-parties to whom the Software is furnished to
  // do so, all subject to the following:
  // 
  // The copyright notices in the Software and this entire statement, including
  // the above license grant, this restriction and the following disclaimer,
  // must be included in all copies of the Software, in whole or in part, and
  // all derivative works of the Software, unless such copies or derivative
  // works are solely in the form of machine-executable object code generated by
  // a source language processor.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  //
  
  ifndef Foundation_RandomStream_INCLUDED
  define Foundation_RandomStream_INCLUDED
  
  include "Poco/Foundation.h"
  include "Poco/BufferedStreamBuf.h"
  include <istream>
  
  namespace Poco {
  
  class Foundation_API RandomBuf: public BufferedStreamBuf
This streambuf generates random data. On Windows NT, the cryptographic API is used. On Unix, /dev/random is used, if available. Otherwise, a random number generator, some more-or-less random data and a SHA-1 digest is used to generate random data. { public: RandomBuf(); ~RandomBuf(); int readFromDevice(char* buffer, std::streamsize length); }; 

  class Foundation_API RandomIOS: public virtual std::ios
The base class for RandomInputStream. This class is needed to ensure the correct initialization order of the stream buffer and base classes. { public: RandomIOS(); ~RandomIOS(); RandomBuf* rdbuf(); 

  protected:
          RandomBuf _buf;
  };
  
  class Foundation_API RandomInputStream: public RandomIOS, public std::istream
This istream generates random data using the RandomBuf. { public: RandomInputStream(); ~RandomInputStream(); }; 

  } // namespace Poco
  
  endif // Foundation_RandomStream_INCLUDED
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.