rpa::filgen_name_to_FILE_base Class Reference

#include <streambuf_tmpnam.h>

Inheritance diagram for rpa::filgen_name_to_FILE_base:

List of all members.

Public Member Functions
void	open (const char *filNam)
FILE *	operator() (void) const
void	close (const char *filNam)
Private Attributes
FILE *	_file

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Detailed Description

filgen objects create temporary file names or descriptors. Their are classified into three categories :

• filgen returning a 'const char *'.
• filgen returning a 'FILE *'.
• filgen returning an int as a file descriptor. Each filgen may have to handle also the destruction of the temp entity it created, but it depends on the exact use of the temp file. (For example, a finename may be created, but the file not. Or, some temporary files may be renamed, thus not needing to be removed. ) The non-standard 'typeof' function would help to classify them automatically.

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Member Function Documentation

void rpa::filgen_name_to_FILE_base::close

(

const char *

filNam

)

The file itself is not removed by this class. It is only closed. It is up to the base class to remove it.

void rpa::filgen_name_to_FILE_base::open

(

const char *

filNam

)

There is a security hole because we cannot access this file exclusively. Even if we could, this step cannot be atomic so the file could be by anything, if it is in /tmp. If the file may already be existing. It is not truncated, so the allocated disk space can be reused.

We use the plain standard 'fopen' because the result is and will always be a FILE pointer.

FILE* rpa::filgen_name_to_FILE_base::operator()

(

void

)

const [inline]

It is required that 'const operator()' is called as often as possible, without side effects, and must always return the same value.

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Member Data Documentation

FILE* rpa::filgen_name_to_FILE_base::_file [private]

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

• streambuf_tmpnam.h
• streambuf_tmpnam.cpp

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