DOPUS TUTORIAL No 3 and more.

Its possible to configure Directory Opus
to load specific applications by clicking
on files in the directory windows.

For example, you could tell DOpus to
automatically decompress any files with
.DMS extension.

Alternatively you could have DOpus load
your word processor whenever you clicked
on files ending with a .WP extension. The
files would then be automatically loaded
into the relevant applications.

DMS decompression

As an example let`s set up DOpus to decompress
DMS files in this way. DMS is the compression
program used for cover disk programs. You`ll
find it in the C directory of most `technical
cover disks`. It`s no problem if you normally
use a different compression system, as this
example can easily be adapted to work with
alternative programs.

DOpus doesn`t automatically understand the
concept of a DMS file, so we need to tell it
what to do. In this case we need to create
a new file type, so select File Type from the
Configure menu and click on New. The requester
that appears lets you choose the type of
operation that the new file type will carry out.
In this case it`s an AmigaDOS Program.

From the next requester, click on the button to
the right labelled Edit Class. Yet another
requester pops up. In the middle of this one
you`ll see a line called File Class and next
to it another field called Class ID. Change the
text in the first one to DMS Compression and
the next one to DMS. Having done this click
once on the word Match in text field below -
it should turn red and the cursor will be placed
in another text field below this that is now
orange. In this field erase what`salready there
and type in

*.dms

On the same line as this instruction you`ll see a
magnifying glass. Click on this and in the new
requester that appears click on the line that
reads MatchName and finally press return.

FILE TYPES

What you`ve just done is set up DOpus to watch
out for files of a certain type. In this case it`s
now looking for filenames that end with the
extension of .DMS. The operations we`re about to
set up will only be carried out on these files.
This allows us to perform selected operations on
specific types of file and we can check for files
in a wide variety of ways.

In this case the `*.dms` line you typed in was a
file name pattern. You could type in any AmigaDOS
wild card pattern here. The MatchName reference
tells the program to take this pattern and compare
with selected file names.

You`ll have noticed other types of comparison in
the requester that appears when you click on the
magnifying glass. From here you can tell the
program to watch for files created on a specific
date, time or that have comments and so on.

Now you can click on OK. Next you can define the
operations that are acrried out, and what actions
the user needs to do to perform them. In our case
we want to invoke the DMS program when a DMS file
is double clicked.

In the box next to the word Events.. click on the
line that reads Action Double-Click. In the field
below this box labelled Event Description type in
something to the effect of `DMS files to DF0`.
This text is just for your own notes so it doesn`t
really make any difference to the actual operation.

We`ve now told Directory Opus that when ever you
double click on a file it should check to see
if the file name has .DMS at the end of it. If it
does it can perform an operation we`re now going
to specify.

Click on the New Button on the left-hand side, half
way down the screen. A cursor will now appear in a
text field just below this. Type in:

dms write {f}

Don`t press Return just yet. Instead click on the
button to the left of this field., changing the
operation type to AmigaDOS. Now in the box next
to the word Flags move the scroll bar down and
click on the line Output Window. You can finally
press Return and click on the OK button.

All being well you should no see the windows we
saw at the start, just before clicking on the
New button. This time however you`ll see a new line
added showing the new DMS file type.

Click on OK and then on the next OK button that
appears. You`ll now be back in the main DOpus
screen.

TRY IT OUT:

1: Copy a file with a .DMS extension to the RAM disk.
2: Now insert a blank disk to the floppy drive.
Double click on the .DMS file.
3: A window will appear and up comes the DMS program
which decompresses the file to the floppy disk.

Thats it, you`ve added the DMS file to DOpus.

Directory Opus Tutorial by Andy Leaning
CU Amiga May 1995

THAT ADZ ~ ADF THANG:

I know there are many ways to do this
but I have included below my method for
converting ADZ to ADF... works for me.

To get ADZ to ADF, first take the ADZ file
and place in a folder say..

work:a_folder/example.ADZ where `a_folder`
is a folder in your volume named `work`
and `example.ADZ` is your file which you
want to convert to ADF format.

Now.. fire up your SHELL and at the prompt
simply TYPE:

gzip -S.adz -d work:a_folder/example.adz

You need to `over-write` the example.adz file.

Then rename the example.adz as example.adf.

Then fire up the program `ADFBlitzer` and put
in a floppy and choose write... you must
choose write. Find the example.adf file and
OK this and watch the floppy light go round.
So if you aquire an ADZ file thats how you
put it on a floppy.

To get an image of a disk you can use `yadi`.
At the SHELL prompt simply type..

yadi r tst.dsk df0:

And this will place an image of the floppy in
the drive in your Workbench partition and call
it tst.dsk. Just rename it example.ADF and you
can use ADFBlitzer to reverse the process.

Another great un-archiver or extractor is
DeCruncherFace V1.1 by Andreas Wenk.. This
copes with LHA, LZH, LZX, ZIP, DMS, ARJ, PP
RUN, RAR and AUTO. A brilliant little
application.

LINKS:

gzip

ADFBlitzer

yadi

Dface

THE CLIPBOARD... for copying text

Hi-lite text that you want to copy & then

`right amiga-c `
to copy &

`right amiga-v`
to paste.

Or simply use PowerSnap.

DMS: To MASH a floppy that you have,
into DMS format try this...

At the SHELL command type..

dms read (path)

In which (path) is whatever path you want
to save the DMS file to...

For example.... if you have a folder on your
Amiga where you want to create a dms file
this would be the path say work:transfers

And if the DMS file you wanted to create
was say `eg_file`, then, the command would be

dms read work:transfers/eg_file

Where `eg_file` is the dms file you want to
create from a floppy in DF0:

You will need DMS in your `C` Folder
and a floppy in your floppy drive.

OK I got my head round DMS now. Was very difficult..

dms read work:transfers/FILE all from the SHELL
Just popped the floppy in df0: and out popped FILE.DMS
in folder transfers on my Work partition.