PLearn::pl_streambuf Class Reference

#include <pl_streambuf.h>

Inheritance diagram for PLearn::pl_streambuf:

[legend]Collaboration diagram for PLearn::pl_streambuf:

[legend]List of all members.

Public Member Functions
	pl_streambuf (streambuf &_original_buf, int_type _inbuflen=0)
	ctor: needs a stream buffer
virtual	~pl_streambuf ()
	destructor: delete the allocated input buffer
void	seekmark (const pl_streammarker &mark)
Protected Member Functions
virtual int_type	underflow ()
	underflow: If no mark, get from underlying buffer.
virtual int_type	uflow ()
virtual streamsize	xsgetn (char *s, streamsize n)
virtual streamsize	xsputn (const char *s, streamsize n)
virtual int_type	overflow (int_type meta=pl_streambuf::eof)
virtual int_type	sync ()
virtual int_type	pbackfail (int_type c=eof)
int	curpos () const
Protected Attributes
streambuf &	original_buf
char *	inbuf
int	inbuflen
pl_streammarker *	first_marker
Static Protected Attributes
const int	pback_size = 4
const int	min_buf_size = 16
Private Types
typedef int	int_type
typedef char	char_type
typedef streambuf	inherited
Static Private Attributes
const int_type	eof = EOF

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Detailed Description

pl_streambuf: stream buffer that allows marking. This buffer makes a second layer of buffering over another stream buffer.

Definition at line 63 of file pl_streambuf.h.

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Member Typedef Documentation

typedef char PLearn::pl_streambuf::char_type [private]

Definition at line 67 of file pl_streambuf.h.

typedef streambuf PLearn::pl_streambuf::inherited [private]

Definition at line 76 of file pl_streambuf.h.

typedef int PLearn::pl_streambuf::int_type [private]

Definition at line 66 of file pl_streambuf.h. Referenced by underflow().

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Constructor & Destructor Documentation

PLearn::pl_streambuf::pl_streambuf (  streambuf &  _original_buf, int_type  _inbuflen = 0 )

ctor: needs a stream buffer

pl_streambuf::~pl_streambuf (   )  [virtual]

destructor: delete the allocated input buffer Definition at line 59 of file pl_streambuf.cc. References inbuf.

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Member Function Documentation

int PLearn::pl_streambuf::curpos (   )  const [inline, protected]

Definition at line 102 of file pl_streambuf.h. References inbuf. Referenced by PLearn::pl_streammarker::pl_streammarker().

pl_streambuf::int_type pl_streambuf::overflow (  int_type  meta = pl_streambuf::eof  )  [protected, virtual]

Definition at line 163 of file pl_streambuf.cc. References original_buf.

pl_streambuf::int_type pl_streambuf::pbackfail (  int_type  c = eof  )  [protected, virtual]

Definition at line 178 of file pl_streambuf.cc. References original_buf.

void pl_streambuf::seekmark (  const pl_streammarker &  mark  )

Definition at line 166 of file pl_streambuf.cc. References inbuf, and PLearn::pl_streammarker::pos. Referenced by PLearn::readFieldName(), and PLearn::readObject().

pl_streambuf::int_type pl_streambuf::sync (   )  [protected, virtual]

Definition at line 169 of file pl_streambuf.cc. References original_buf.

pl_streambuf::int_type pl_streambuf::uflow (   )  [protected, virtual]

Definition at line 131 of file pl_streambuf.cc. References first_marker, original_buf, and underflow().

pl_streambuf::int_type pl_streambuf::underflow (   )  [protected, virtual]

underflow: If no mark, get from underlying buffer. If buffer is marked, grow/fill buffer as necessary and return next char. Definition at line 67 of file pl_streambuf.cc. References first_marker, inbuf, inbuflen, int_type, min_buf_size, original_buf, and pback_size. Referenced by uflow().

virtual streamsize PLearn::pl_streambuf::xsgetn (  char *  s, streamsize  n )  [protected, virtual]

virtual streamsize PLearn::pl_streambuf::xsputn (  const char *  s, streamsize  n )  [protected, virtual]

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Member Data Documentation

const int_type PLearn::pl_streambuf::eof = EOF [static, private]

Definition at line 70 of file pl_streambuf.h.

pl_streammarker* PLearn::pl_streambuf::first_marker [protected]

Definition at line 86 of file pl_streambuf.h. Referenced by PLearn::pl_streammarker::pl_streammarker(), uflow(), underflow(), and PLearn::pl_streammarker::~pl_streammarker().

char* PLearn::pl_streambuf::inbuf [protected]

Definition at line 81 of file pl_streambuf.h. Referenced by curpos(), seekmark(), underflow(), and ~pl_streambuf().

int PLearn::pl_streambuf::inbuflen [protected]

Definition at line 82 of file pl_streambuf.h. Referenced by underflow().

const int PLearn::pl_streambuf::min_buf_size = 16 [static, protected]

Definition at line 84 of file pl_streambuf.h. Referenced by underflow().

streambuf& PLearn::pl_streambuf::original_buf [protected]

Definition at line 80 of file pl_streambuf.h. Referenced by overflow(), pbackfail(), sync(), uflow(), and underflow().

const int PLearn::pl_streambuf::pback_size = 4 [static, protected]

Definition at line 83 of file pl_streambuf.h. Referenced by underflow().

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

• pl_streambuf.h
• pl_streambuf.cc

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