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stdiobuf (3)
  • >> stdiobuf (3) ( Solaris man: Библиотечные вызовы )
  • 
    NAME
         stdiobuf - buffer and stream classes for use with C stdio
    
    SYNOPSIS
         #include <stdiostream.h> // includes <iostream.h> and <stdio.h>
         class stdiobuf : public streambuf {
         public:
              stdiobuf(FILE*);
              FILE*     stdiofile();
         };
         class stdiostream : public ios {
         public:
              stdiostream(FILE*);
              stdiobuf* rdbuf();
         };
    
    DESCRIPTION
         The stdiobuf class is a specialization of streambufs using a
         C  stdio  FILE as an intermediary to an actual file which is
         the source or destination of characters.  The basic  stream-
         buf  operations  are  as  described  in  sbufprot(3C++)  and
         sbufpub(3C++).   Input,  output,  and  seek  operations  are
         reflected in changes to the associated FILE.  The seek func-
         tions are implemented in terms of fseek(), for example.
    
         The stdiostream provides a C++ interface to a C stdio  FILE.
         It has a stdiobuf as its buffer.  It is not a full implemen-
         tation of iostreams; it has only the buffer-class  and  ios-
         class  functionality.   C++  I/O  is  done via per-character
         calls to the C stdio getc() and putc() functions.  There  is
         no  normal buffering, since that would break synchronization
         of the C and C++ accesses.
    
         The only reason to use either of these classes is to provide
         a  way to mix C stdio code and C++ iostream-like code on the
         same file.  Prefer to use filebuf and fstream, which are far
         more efficient, for new code.
    
      stdiobuf functions
         stdiobuf(fp)
              Constructs a stdiobuf attached to  the  FILE  structure
              pointed to by fp.
    
         FILE* fp = siobuf.stdiofile()
              Returns a pointer to the FILE structure associated with
              siobuf.
    
      stdiostream functions
         stdiostream(fp)
              Constructs a stdiostream attached to the FILE structure
              pointed to by fp.
    
         stdiobuf* sbp = siostr.rdbuf()
              Returns a  pointer  to  the  stdiobuf  associated  with
              siostr.   This is the same as ios::rdbuf(), except that
              the return type is specifically a stdiobuf.
    
    SEE ALSO
         ios.intro(3C++), ios(3C++), sbufprot(3C++), sbufpub(3C++),
         stdio(3V),
    
         C++ 4.1 Library Reference Manual:
    
    
    
    


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