Directory Listing

Directory Listing

[Rick Selby]

Hi,

I've been searching around for a solution to this for a while, and finally
remembered about newsgroups...

Basically I'd like a program that I can run in a directory, that will be
able to read in the names of the files in the directory, do stuff with them,
then create some directories and move the files around.

Obviously the 'doing stuff with them' bit I know I can do... but is anything
else remotely possible in Ada? I'd like to use Ada because, well, I know it,
and although I'm pretty sure it could be done in C I haven't the foggiest
where to start there.

And I think I remember a command to run dos programs, so the creating
directories and moving files seems reasonable, if only I knew what the file
names were...

Oh I'm running under Windows with Gnat.

Cheers,
--Rick

Re: Directory Listing

[Jacob Sparre Andersen]

Rick Selby wrote:

> Basically I'd like a program that I can run in a directory, that will be
> able to read in the names of the files in the directory, do stuff with them,
> then create some directories and move the files around.

Since you are using GNAT, you could take a look at the 
package GNAT.OS_Lib.  If you want a more general solution, 
you should use a POSIX library (Florist is one option).

Greetings,

Jacob
-- 
"In space, no-one can press CTRL-ALT-DEL"
                                         -- An Ada programmer

Re: Directory Listing

[Stephen Leake]

"Rick Selby" <rjs130@york.ac.uk> writes:

> Basically I'd like a program that I can run in a directory, that will be
> able to read in the names of the files in the directory, do stuff with them,
> then create some directories and move the files around.
> 
> Oh I'm running under Windows with Gnat.

See the packages GNAT.OS_Lib and GNAT.Directory_Operations. You can
find the package specs in
GNAT/lib/gcc-lib/pentium-mingw32msv/2.8.1/adainclude/ 

It would be nice if the GNAT user's guide had a list of these useful
libraries, but it doesn't. There are lots more there ...

-- 
-- Stephe

Re: Directory Listing

[Eric G. Miller]

In article <ubs2jh0ee.fsf@nasa.gov>, Stephen Leake wrote:
> "Rick Selby" <rjs130@york.ac.uk> writes:
> 
>> Basically I'd like a program that I can run in a directory, that will be
>> able to read in the names of the files in the directory, do stuff with them,
>> then create some directories and move the files around.
>> 
>> Oh I'm running under Windows with Gnat.
> 
> See the packages GNAT.OS_Lib and GNAT.Directory_Operations. You can
> find the package specs in
> GNAT/lib/gcc-lib/pentium-mingw32msv/2.8.1/adainclude/ 
> 
> It would be nice if the GNAT user's guide had a list of these useful
> libraries, but it doesn't. There are lots more there ...

Over here, "info gnat-rm" contains a section titled "The GNAT Library" 
that gives a very terse description of each unit.  (gcc 3.2)  But,
somehow the info ARM manual got "lost" ;-(

-- 
echo ">gra.fcw@2ztr< eryyvZ .T pveR" | rot13 | reverse

Re: Directory Listing

[Stephen Leake]

"Eric G. Miller" <felix@calico.local> writes:

> In article <ubs2jh0ee.fsf@nasa.gov>, Stephen Leake wrote:
> > It would be nice if the GNAT user's guide had a list of these useful
> > libraries, but it doesn't. There are lots more there ...
> 
> Over here, "info gnat-rm" contains a section titled "The GNAT Library" 
> that gives a very terse description of each unit.  (gcc 3.2)  But,
> somehow the info ARM manual got "lost" ;-(

Ah. The ACT distribution of GNAT also has the list of GNAT-specific
packages in the GNAT Reference Manual (along with the list of Ada
standard packages). I had been looking in the GNAT User Guide, since
I thought the reference manual only contained stuff required by the
Ada language standard. Oh well ...

-- 
-- Stephe

Re: Directory Listing

[sk]

Hi,

 > Oh I'm running under Windows with Gnat.

Gnat.Os_Lib, Gnat.Directory_Operations, Gnat.Io_Aux

(I use Linux, but I believe that the Windows versions
provide the same interface).

-- 
--
-- Merge vertically for real address
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--  k i e k c c m
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Re: Directory Listing

[Rick Selby]

Thankyou all for pointing me there, all a success too!

Cheers,
--Rick

Re: Directory Listing

[R. Srinivasan]

apart from all the splendid ideas, i suggest you also take a look at the
package gnat.command_line and in particular procedures related to filename
expansion.

if you need an example, i have a sample program "findfiles" that is a cheap
find (the unix util) in ada heavily relying on gnat packages mentioned -
please contact me by email.

regards

srini
"Rick Selby" <rjs130@york.ac.uk> wrote in message
news:b01ttm$1u5$1@pump1.york.ac.uk...
> Hi,
>
> I've been searching around for a solution to this for a while, and finally
> remembered about newsgroups...
>
> Basically I'd like a program that I can run in a directory, that will be
> able to read in the names of the files in the directory, do stuff with
them,
> then create some directories and move the files around.
>
> Obviously the 'doing stuff with them' bit I know I can do... but is
anything
> else remotely possible in Ada? I'd like to use Ada because, well, I know
it,
> and although I'm pretty sure it could be done in C I haven't the foggiest
> where to start there.
>
> And I think I remember a command to run dos programs, so the creating
> directories and moving files seems reasonable, if only I knew what the
file
> names were...
>
> Oh I'm running under Windows with Gnat.
>
> Cheers,
> --Rick
>
>

Re: Directory Listing

[Grein, Christoph]

> See the packages GNAT.OS_Lib and GNAT.Directory_Operations. You can
> find the package specs in
> GNAT/lib/gcc-lib/pentium-mingw32msv/2.8.1/adainclude/ 
> 
> It would be nice if the GNAT user's guide had a list of these useful
> libraries, but it doesn't. There are lots more there ...

The top secret Gnat Reference Manual has this list.