boost::fdinbuf Class Reference

#include <fdstream.h>

Public Member Functions
	fdinbuf (int _fd)
Protected Member Functions
virtual int	underflow ()
Protected Attributes
int	fd
char	buffer [bufSize+pbSize]
Static Protected Attributes
const int	pbSize = 4
const int	bufSize = 1024

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Constructor & Destructor Documentation

boost::fdinbuf::fdinbuf (  int  _fd  )  [inline]

Definition at line 123 of file fdstream.h. : fd(_fd) { setg (buffer+pbSize, // beginning of putback area buffer+pbSize, // read position buffer+pbSize); // end position }

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Member Function Documentation

virtual int boost::fdinbuf::underflow (   )  [inline, protected, virtual]

Definition at line 131 of file fdstream.h. { #ifndef _MSC_VER using std::memmove; #endif // is read position before end of buffer? if (gptr() < egptr()) { return *gptr(); } /* process size of putback area * - use number of characters read * - but at most size of putback area */ int numPutback; numPutback = gptr() - eback(); if (numPutback > pbSize) { numPutback = pbSize; } /* copy up to pbSize characters previously read into * the putback area */ memmove (buffer+(pbSize-numPutback), gptr()-numPutback, numPutback); // read at most bufSize new characters int num; num = read (fd, buffer+pbSize, bufSize); if (num <= 0) { // ERROR or EOF return EOF; } // reset buffer pointers setg (buffer+(pbSize-numPutback), // beginning of putback area buffer+pbSize, // read position buffer+pbSize+num); // end of buffer // return next character return *gptr(); }

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Field Documentation

char boost::fdinbuf::buffer[bufSize+pbSize] [protected]

Definition at line 114 of file fdstream.h.

const int boost::fdinbuf::bufSize = 1024 [static, protected]

Definition at line 113 of file fdstream.h.

int boost::fdinbuf::fd [protected]

Definition at line 106 of file fdstream.h.

const int boost::fdinbuf::pbSize = 4 [static, protected]

Definition at line 112 of file fdstream.h.

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The documentation for this class was generated from the following file:

• fdstream.h

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