RWXDRostream(3C++) RWXDRostream(3C++)
NameRWXDRostream (Unix only) - Rogue Wave library class
Synopsis
#include <rw/xdrstrea.h>
XDR xdr;
xdrstdio_create(&xdr, stdout, XDR_ENCODE) ;
RWXDRostream rw_xdr(&xdr);
Description
Class RWXDRostream is a portable output stream based on XDR routines.
Class RWXDRostream encapsulates a portion of the XDR library routines
that are used for external data representation. XDR routines allow
programmers to describe arbitrary data structures in a machine-
independent fashion. Data for remote procedure calls (RPC) are
transmitted using XDR routines. Class RWXDRostream enables one to output
from a stream and encode an XDR structure from a machine representation.
Class RWXDRostream provides the capability to encode the standard data
types and vectors of those data types. An XDR stream must first be
created by calling the appropriate creation routine. XDR streams
currently exist for encoding/decoding of data to or from standard
iostreams and file streams, TCP/IP connections and Unix files, and
memory. These creation routines take arguments that are tailored to the
specific properties of the stream. After the XDR stream has been
created, it can then be used as an argument to the constructor for a
RWXDRostream object. RWXDRostream can be interrogated as to the status
of the stream using member functions bad(), clear(), eof(), fail(),
good(), and rdstate().
Persistence
None
Example
The example that follows is a "writer" program that encodes an XDR
structure onto a file stream. The example for class RWXDRistream is the
"reader" program that decodes the XDR structures into a machine
representation for a data type. The library that supports XDR routines
must be linked in. The name of this library is not standard.
#include <rw/xdrstrea.h>
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RWXDRostream(3C++) RWXDRostream(3C++)
#include <rw/rstream.h>
#include <stdio.h>
main(){
XDR xdr;
FILE* fp = fopen("test","w+");
xdrstdio_create(&xdr, fp, XDR_ENCODE);
RWXDRostream rw_xdr(&xdr);
for(int i=0; i<10; ++i)
rw_xdr << i; // encode integer data
fclose(fp);
}
Public Constructor
RWXDRostream(XDR* xp);
Initialize a RWXDRostream from the XDR structure xp.
RWXDRostream(streambuf*);
Initialize RWXDRostream with a pointer to streambuf. streambuf must
already be allocated.
RWXDRostream(ostream&);
Initialize RWXDRostream with an output stream.
Public Destructor
virtual ~RWXDRostream();
Deallocate previously allocated resources.
Public Member Functions
virtual RWvostream&
operator<<(const char* s);
Redefined from class RWvostream. Store the character string starting at s
to the output stream using the XDR format. The character string is
expected to be null terminated.
virtual RWvostream&
operator<<(char c);
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RWXDRostream(3C++) RWXDRostream(3C++)
Redefined from class RWvostream. Store the character c to the output
stream using the XDR format. Note that c is treated as a character, not
a number. This member attempts to preserve the symbolic characters values
transmitted over the stream.
virtual RWvostream&
operator<<(wchar_t wc);
Redefined from class RWvostream. Store the wide character wc to the
output stream using the XDR format. Note that wc is treated as a
character, not a number.
virtual RWvostream&
operator<<(unsigned char c);
Redefined from class RWvostream. Store the unsigned character c to the
output stream using the XDR format. Note that c is treated as a
character, not a number.
virtual RWvostream&
operator<<(double d);
Redefined from class RWvostream. Store the double d to the output stream
using the XDR format.
virtual RWvostream&
operator<<(float f);
Redefined from class RWvostream. Store the float f to the output stream
using the XDR format.
virtual RWvostream&
operator<<(int i);
Redefined from class RWvostream. Store the integer i to the output stream
using the XDR format.
virtual RWvostream&
operator<<(unsigned int i);
Redefined from class RWvostream. Store the unsigned integer i to the
output stream using the XDR format.
virtual RWvostream&
operator<<(long l);
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RWXDRostream(3C++) RWXDRostream(3C++)
Redefined from class RWvostream. Store the long l to the output stream
using the XDR format.
virtual RWvostream&
operator<<(unsigned long l);
Redefined from class RWvostream. Store the unsigned long l to the output
stream using the XDR format.
virtual RWvostream&
operator<<(short s);
Redefined from class RWvostream. Store the short s to the output stream
using the XDR format.
virtual RWvostream&
operator<<(unsigned short );
Redefined from class RWvostream. Store the unsigned short s to the output
stream using the XDR format.
virtual RWvostream&
put(char c);
Redefined from class RWvostream. Store the character c to the output
stream using the XDR format. If the operation fails, it sets the failbit.
This member only preserves ASCII numerical codes, not the coresponding
character symbol.
virtual RWvostream&
put(unsigned char c);
Redefined from class RWvostream. Store the unsigned character c to the
output stream using the XDR format. If the operation fails, it sets the
failbit.
virtual RWvostream&
put(wchar_t wc);
Redefined from class RWvostream. Store the wide character wc to the
output stream using the XDR format. If the operation fails, it sets the
failbit.
virtual RWvostream&
put(const char* p, size_t N);
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RWXDRostream(3C++) RWXDRostream(3C++)
Redefined from class RWvostream. Store the vector of N characters
starting at p to the output stream using the XDR format. If the operation
fails, it sets the failbit.
virtual RWvostream&
put(const wchar_t* p, size_t N);
Redefined from class RWvostream. Store the vector of N wide characters
starting at p to the output stream using the XDR format. If the operation
fails, it sets the failbit.
virtual RWvostream&
put(const short* p, size_t N);
Redefined from class RWvostream. Store the vector of N shorts starting at
p to the output stream using the XDR format. If the operation fails, it
sets the failbit.
virtual RWvostream&
put(const unsigned short* p, size_t N);
Redefined from class RWvostream. Store the vector of N unsigned shorts
starting at p to the output stream using the XDR format. If the operation
fails, it sets the failbit.
virtual RWvostream&
put(const int* p, size_t N);
Redefined from class RWvostream. Store the vector of N integers starting
at p to the output stream using the XDR format. If the operation fails,
it sets the failbit.
virtual RWvostream&
put(const unsigned int* p, size_t N);
Redefined from class RWvostream. Store the vector of N unsigned integers
starting at p to the output stream using the XDR format. If the operation
fails, it sets the failbit.
virtual RWvostream&
put(const long* p, size_t N);
Redefined from class RWvostream. Store the vector of N longs starting at
p to the output stream using the XDR format. If the operation fails, it
sets the failbit.
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RWXDRostream(3C++) RWXDRostream(3C++)
virtual RWvostream&
put(const unsigned long* p, size_t N);
Redefined from class RWvostream. Store the vector of N unsigned longs
starting at p to the output stream using the XDR format. If the operation
fails, it sets the failbit.
virtual RWvostream&
put(const float* p, size_t N);
Redefined from class RWvostream. Store the vector of N floats starting at
p to the output stream using the XDR format. If the operation fails, it
sets the failbit.
virtual RWvostream&
put(const double* p, size_t N);
Redefined from class RWvostream. Store the vector of N doubles starting
at p to the output stream using the XDR format. If the operation fails,
it sets the failbit.
Virtual RWXDRostream&
flush();
Send the contents of the stream buffer to output immediately.
Virtual RWXDRostream&
putString(const char*s, size_t N);
Store the character string for retrieval by RWXDRistream::getString.
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