How to be sure of if a file exist?

How to be sure of if a file exist?

[Markus Wahl]

How can I make my program find out which files that exist in a certain
directory?

/Markus

"I have no hard currency, but if I did could I buy you a drink?" - Fidel Castro

Re: How to be sure of if a file exist?

[Robert Dewar]

Markus said

"How can I make my program find out which files that exist in a certain
directory?"

There is no implementation independent way of doing this (indeed even the
idea of a directory is somewhat implementation dependent).

No doubt the operating system that provides the directories also provides
some routines that answer your question. Find out what these routines are
and call them. To call them from Ada, use pragma Import with the appropriate
convention name. For example, if you find some Fortran routines that do
what you want, call them using pragma Import (Fortran, ...)

Re: How to be sure of if a file exist?

[Walter B. Hollman Sr.]

On Jul 05, 1996 17:26:33 in article <How to be sure of if a file exist?>,
'Markus Wahl <d95wahl@dtek.chalmers.se>' wrote: 
 
 
> 
>How can I make my program find out which files that exist in a certain 
>directory? 
> 
>/Markus 
> 
>"I have no hard currency, but if I did could I buy you a drink?" - Fidel  
>Castro 
> 
--Write a package to test for the presence of the file. 
Walter B. Hollman Sr 
 
 
 
 
 
 
 

Re: How to be sure of if a file exist?

[Tarjei Jensen]

Try importing the Posix routines for directory access if you are on a Unix or
OS/2 (emx) machine. Otherwise you will have to write your own.


Greetings,

 
--
// Tarjei T. Jensen 
//    tarjeij@ulrik.uio.no || fax +47 51664292  || voice +47 51 85 87 39
//   Support you local rescue centre: GET LOST!
// Working, but not speaking for the Norwegian Hydrographic Service.

Re: How to be sure of if a file exist?

[Larry Kilgallen]

The rules for what constitutes a valid file name will vary between
various operating systems.  In most cases file names which lack an
embedded device and/or directory specification will go to some "current"
area, but sometimes that area will not exist or will not be writable
by the user.

One cannot write a program which uses files without some knowledge of
the operating system environment(s).

Larry Kilgallen