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Documentation
PickFile Version 1.2 FreeWare
@ 1992/93 by H.P.G
Index:
======
Index
What is PickFile ?
System Requirements
Legal stuff
PickFile Start Options
Examples
Technical
At Last
Addresse
List Of Files
What is PickFile ?:
===================
Under OS 2.xx it is now possible to use different sets of fonts,
patters and mouse pointers and to change them in a very easy
manner.
Since I use this new system, I feel very happy if I use well
designed wbench pattern or window pattern or different overscan
sizes or different sets of fonts for my wbenchscreen.
But if I have used e.g. a window pattern for a longer time, I
usually want to change this pattern.
So first I have to start the WBPattern program which is located
in the `sys:prefs/` drawer ...
After designing a new pattern, I have to save it as default.
After some time of using this pattern the whole procedure starts
again and again and not only for patterns than also for fonts
colours etc..
PickFile can help you.
PickFile chose randomly an entry out of a list or optionally
a file out of a drawer. Then PickFile executes this file or
an optional commandline which must be supplied.
PickFile has a variety of applications and is useful for
starting all kinds of files and programs.
PickFile (PF) is not only able to chose a file, but also
to execute a whole commandline which has to be supplied.
You can also ask PF to chose more than one entry by one call.
To write about all possible kinds of aplications you may use
PF for, I haven`t the time and imagination here.
You can use PF for calling prefs files or to start sampled
sounds (randomly) or just to create a slideshow with a randomly
order of your pictures...
I have also include an example in the examples drawer.
I have also included some examples in this document.
(See Tutorial).
System Requirements:
====================
PickFile needs kickstart 2.04 version 37L or better to run.
Under version 36L (1.4) or 1.3 it is not able to run, because
of the usage of some OS 2.xx only features for pattern matching
and commandline editing.
(Sorry).
Legal Stuff:
============
This program and all files come with it, also the docfiles, are
released as FREEWARE.
this means:
everybody may use PickFile,
everybody may copy PickFile, if:
1. You copy all included files, see list at the end of the
doc file.
2. No changes are made, this means the program and all
included files must stay in the original form.
Exception: you may archieve it; but in this case you
must also archieve the whole package.
3. If you recompile it, you have to include a notice to
the original author. If you also want to (re)distribute
in any new form you have to send me a copy.
4. You may not sell PickFile.
Execption: you`re allowed to take a small copy fee
which should not extend 5US$.
5. If you want to include PickFile
or one of the included files as a part of a commercial
package, you must have written permission of the
author (address see below).
I take no warranty or guaranty for the function of this program.
The whole risk of using PickFile stays only by the user.
PickFile Startoptions:
======================
If you start PF from WBench, you will get only a short helptext.
If you instead call PF from CLI, so it uses the following
Syntax: [File=F/K][Dir=D/K][MinVal=M/N][MaxVal=X/N][Test=T/K]
[Quiet=Q/K][Help=H/S][Cmd=C/F]
File=F/K : If you specify file, than this file is read by PF.
One line of this file will be randomly chosen. The
given commandline will be used, if supplied one
(see later Cmd). The File will be loaded in memory
and then processed. This saves a lot of time.
The syntax of this file will be described below.
See also the examples section.
Dir=D/K, : If you instead specify Dir no file will be processed
but this dir is examined and a file of this dir
will be randomly chosen. If given, a commandline
will be used. (see later under Cmd). If you omit
this commandline the chosen file will be started
as an cli program.
Pat=P/K : After Pat you can specify a pattern after AmigaDOS
conventions. So only matched files will be processed
and the selection can only be one of the matched
files. The pat option will only be used if you use
the dir option, otherwise this option will be ignored.
MaxVal=X/N : Here you can specify the number of entries which
should be chosen by PickFile. The maximum value depents
on the number of lines by use the file options or the
number of files when using the dir option. If you specify
a larger number the maximum available value will be used.
Default: 1
Test=T/S : If you use Test, the given commandline or the
chosen file will not be executed but displayed in
the cli window. This means you can use this option
to see which commandline would be executed when run
PickFile without the Test option.
(Great for testing and debugging settings).
Quiet=Q/S : If you use instead the Quiet option, PF doesn`t
tell you which selection is done and which command
is executed. Usually PF informs the user about the
commandline which is currently executed. If you want
to call PF e.g. in your startup-sequence to select
a set of patterns, then the output of PF would opened
the shell window. If this option is used the window
still stays closed.
(see also AmigaDOS manual Shell-Flag (AUTO)).
This option is also useful for batch files which
should not print any output to a shell window.
Default: OFF.
Help=H/S : If you use Help or the commandline contains any error
a short helptext will be printed out.
Cmd=C/F : This is the most powerful option. After the Cmd
keyword you can specify a whole command line with all
kinds of arguments. This commandline will then be
called after chosing an entry. This option is
available under file and dir option.
The commandline may be embedded in "",s but this is
optional.
But if you use another shell than the standard shell
e.g. CShell, I will recomment, to do this to prevent
pattern expandings before calling the commandline.
All included []`s will be automatically replaced with
the chosen entry. If you specify multiples selections
this commandline will be called again for each entry.
(see also MaxValue).
So you can use PickFile also for recursion calls
(BE VERY CAREFULL)
For all options: you may use all options in any order.
Exception: Cmd must be the last argument.
All options are optional (what a surprise :-). But also here exists
one exeption:
You must either specify a file or a dir.
If you specify a file and a dir the file will be processed and the
dir ignored.
The syntax for the file must follow this conventions:
The file must be 100% ascii code. There must not exists any kind
of comments, because, to handle this, would slow down the program
too much.
Each line represents a command line. If you also supply a command
line (Cmd option), PF thinks it should pickup one or more lines
of the file and replace the given []`s of the command line.
So you see there should be no leading spaces in the lines.
Examples:
=========
Now there are some example callings and commandline
options and their use.
1. Example: lottery program
---------------------------
This example is included in the examples drawer.
Assuming you have a file calling `Lotto.dat` in the current
directory which includes all numbers from 1 to 49 one number
in each line.
Assuming we want to chose 6 numbers randomly from 49 and we
want to print out the selections you can use the following
example commandline
PickFile F Lotto.dat X 6 C "echo [] > PRT:"
| | |
| | ---> This command line will be executed for
| | each chosen number.
| |
| ------> This tells PF to chose 6 different
| numbers out of the file
|
------------------> This is the file which cointains
the used numbers
2. Example: Randomly using of wbpattern set
-------------------------------------------
Assuming we have several wbprefs patterns located in the
sys:prefs/presets drawer (these can be designed with the
WBPattern program and be saved with the menuitem Save As).
Assuming these wbpattern sets are called `wb.1.pat`,
`wb.2.pat` ... `wb.n.pat`. If you now insert the following
line into you startup-sequence:
.....
PickFile D Sys:Prefs/Presets/ P "wb.#?.pat" Q C
"Copy [] env:sys/wbpat"
.....
Endcli >NIL:
,so PickFile randomly picks up a set of these patterns each time you
boot up. To process only the wb.##.pat files, we have to specify here
Pat with the pattern 'wb.#?.pat' (for pattern matching see also
AmigaDOS manual). With Q (for Quiet) no outputs will be sent to the
shell window, so the AUTO boot shell window will not be opened.
The commandline `Copy [] env:sys/wb.pat` will be replaced with
e.g. (Assuming PF had chosen wp.1.pat).
====> Copy wb.1.pat env:sys/wb.pat
After calling the IPrefs program in your startup-sequence this pattern
file is used for the wbpattern (really good ?).
You can use this example also to change other environments like i.e.
screen sizes (NTSC-PAL or InterLaced/NON-Interlaced mode etc...)
(this functions also later at any time). You must therefor only change
the Pat and Cmd line patterns.
3. Example: Slideshow with several pictures in a randomly order
---------------------------------------------------------------
Assuming we have a disk with the name `PICTURES:` and this disk
contains 20 different picturs. So we simply can use the following
example call to PickFile to create a full slideshow and starts it.
I assume also that you have a picture viewer in the C: directory
which is called Show.
PickFile D Pictures: X 20 Q C "C:Show []"
All 20 pictures will now be displayed in a randomly generated order.
No outputs will be sent to the cli window. For each picture the
commandline `C:Show []` with the chosen picture name instead of the
[]`s will be executed. I assume that C:Show can display the given
picture when specified at start time.
There is an endless list of other applications which can be used
with PickFile.
If you know any other interesting application please let me know.
Technical:
==========
I spoke in this manual often about randomly selections. The
random generator routine is created by using the system time
(micros) to initialize the ran() routine. The selection is
then performed by calling sran().
If you use multiple selections, I take care that each entry is
chosen only once. Also if you specify more entries in a list or
files that exists, only the correct number of entries will be
used.
To prevent errors in command line execution, the selection of
drawers is not supported, they will be only ignored (certainly
except in path specifications).
At Last:
========
I hope (really) that there are some people out there which
are interested in this wonderful tool and stays here as your
H.P.G
Addresse:
=========
Hans-Peter Guenther
Gruener Weg 5
3501 Fuldatal 2
W-Germany
List Of Files:
==============
(If you miss one or more of the following files your release is incomplete)
PickFile : The binary
PickFile.info
PickFile.doc : English manual
PickFile.doc.info
PickFile.dok : German manual
PickFile.dok.info
Examples (dir)
Examples
Lotto.dat : Lottery file (Example 1)
Lotto.dat.info
----END