ReadFileBuffer Class Reference

Collaboration diagram for ReadFileBuffer:

Public Member Functions
	ReadFileBuffer (Communicate *c)
bool	open_file (const std::string &fname)
bool	read_contents ()
char *	contents ()
void	reset ()
	~ReadFileBuffer ()

Public Attributes
bool	is_open
int	length

Private Member Functions
int	get_file_length (std::ifstream *f) const

Private Attributes
char *	cbuffer
std::ifstream *	fin
Communicate *	myComm

Detailed Description

Definition at line 109 of file ECPComponentBuilder.h.

Constructor & Destructor Documentation

ReadFileBuffer()

ReadFileBuffer ( Communicate *  c )

inline

Definition at line 119 of file ECPComponentBuilder.h.

: cbuffer(NULL), fin(NULL), myComm(c), is_open(false), length(0) {}

~ReadFileBuffer()

~ReadFileBuffer ( )

inline

Definition at line 125 of file ECPComponentBuilder.h.

References ReadFileBuffer::cbuffer, and ReadFileBuffer::fin.

  {
    delete[] cbuffer;
    if (fin)
      delete fin;
  }

Member Function Documentation

contents()

char* contents ( )

inline

Definition at line 122 of file ECPComponentBuilder.h.

References ReadFileBuffer::cbuffer.

Referenced by ECPComponentBuilder::read_pp_file(), and qmcplusplus::TEST_CASE().

{ return cbuffer; }

get_file_length()

int get_file_length ( std::ifstream *  f ) const

private

Definition at line 72 of file ECPComponentBuilder.cpp.

Referenced by ReadFileBuffer::read_contents().

{
  f->seekg(0, std::ios::end);
  int len = f->tellg();
  f->seekg(0, std::ios::beg);
  return len;
}

open_file()

bool open_file

(

const std::string &

fname

)

Definition at line 96 of file ECPComponentBuilder.cpp.

References Communicate::bcast(), ReadFileBuffer::fin, ReadFileBuffer::is_open, ReadFileBuffer::myComm, Communicate::rank(), and ReadFileBuffer::reset().

Referenced by ECPComponentBuilder::read_pp_file(), and qmcplusplus::TEST_CASE().

{
  reset();

  if (myComm == NULL || myComm->rank() == 0)
  {
    fin = new std::ifstream(fname.c_str());
    if (fin->is_open())
      is_open = true;
  }
  if (myComm)
    myComm->bcast(is_open);
  return is_open;
}

read_contents()

bool read_contents

(

)

Definition at line 111 of file ECPComponentBuilder.cpp.

References Communicate::bcast(), ReadFileBuffer::cbuffer, ReadFileBuffer::fin, ReadFileBuffer::get_file_length(), ReadFileBuffer::is_open, ReadFileBuffer::length, ReadFileBuffer::myComm, and Communicate::rank().

Referenced by ECPComponentBuilder::read_pp_file(), and qmcplusplus::TEST_CASE().

{
  if (!is_open)
    return false;

  if (myComm == NULL || myComm->rank() == 0)
  {
    length = get_file_length(fin);
  }
  if (myComm)
    myComm->bcast(length);

  cbuffer         = new char[length + 1];
  cbuffer[length] = '\0';

  if (myComm == NULL || myComm->rank() == 0)
    fin->read(cbuffer, length);

  if (myComm != NULL)
    myComm->bcast(cbuffer, length);

  return true;
}

reset()

void reset

(

)

Definition at line 80 of file ECPComponentBuilder.cpp.

References ReadFileBuffer::cbuffer, ReadFileBuffer::fin, ReadFileBuffer::is_open, ReadFileBuffer::length, ReadFileBuffer::myComm, and Communicate::rank().

Referenced by ReadFileBuffer::open_file().

{
  if (is_open)
  {
    if (myComm == NULL || myComm->rank() == 0)
    {
      delete fin;
      fin = NULL;
    }
    delete[] cbuffer;
    cbuffer = NULL;
    is_open = false;
    length  = 0;
  }
}

Member Data Documentation

cbuffer

char* cbuffer

private

Definition at line 111 of file ECPComponentBuilder.h.

Referenced by ReadFileBuffer::contents(), ReadFileBuffer::read_contents(), ReadFileBuffer::reset(), and ReadFileBuffer::~ReadFileBuffer().

fin

std::ifstream* fin

private

Definition at line 112 of file ECPComponentBuilder.h.

Referenced by ReadFileBuffer::open_file(), ReadFileBuffer::read_contents(), ReadFileBuffer::reset(), and ReadFileBuffer::~ReadFileBuffer().

is_open

bool is_open

Definition at line 117 of file ECPComponentBuilder.h.

Referenced by ReadFileBuffer::open_file(), ReadFileBuffer::read_contents(), and ReadFileBuffer::reset().

length

int length

Definition at line 118 of file ECPComponentBuilder.h.

Referenced by ReadFileBuffer::read_contents(), ECPComponentBuilder::read_pp_file(), ReadFileBuffer::reset(), and qmcplusplus::TEST_CASE().

myComm

Communicate* myComm

private

Definition at line 113 of file ECPComponentBuilder.h.

Referenced by ReadFileBuffer::open_file(), ReadFileBuffer::read_contents(), and ReadFileBuffer::reset().

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

• /home/pk7/projects/qmc/for_cron_doxygen/qmcpack/src/QMCHamiltonians/ECPComponentBuilder.h
• /home/pk7/projects/qmc/for_cron_doxygen/qmcpack/src/QMCHamiltonians/ECPComponentBuilder.cpp