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- © 1 9 9 4 S t r a y l i g h t
- ___________________________________________________________
-
- About CurrDir
-
- For some reason, people appear to like to have the current
- directory in their command prompts. Indeed, I wrote a code
- variable to do this last November. Following a discussion
- on c.s.a recently, I decided to upgrade my program for
- doing this, and then, out of the kindness of my heart, give
- it away. Nutty, isn't it?
-
- So what makes Straylight currDir better than the other
- current-directory-in-a-code-variable utilities around?
- Well, for a start, it was written by Straylight. For
- seconds:
-
- * It does it the `right way' by using OS_FSControl 37
- (CanonicalisePath) on the string `@' which avoids
- problems with the mangling-system-variables approach,
- which can go badly wrong.
-
- * It allows you to specify the variable name, so you can
- have lots of different variables with different options,
- if you want.
-
- * It allows you to specify a `maximum length', beyond which
- the path name is truncated, so that the path string
- doesn't fill up the whole width of the screen.
-
- The truncation is fairly sensible. It will attempt to show
- you the filing system and disk name, if there is one, and
- will chop off the beginning, rather than the end, of the
- actual pathname, so
-
- scsi::Wintermute.$.Straylight.Software.Freeware.Dynamite
-
- might be shortened to
-
- scsi::Wintermute.$...tware.Free.Dynamite
-
- As you have no doubt noticed, an ellipsis (`...') is
- inserted to show that characters have been removed.
- ___________________________________________________________
-
- Using currDir
-
- At simplest, just double-click on the `currDir'
- application. This will create a system variable called
- `CSD' which contains your full current directory path. You
- could then put in your prompt with a command like
-
- SetMacro CLI$Prompt [<CSD>]
-
- If you want to create a different variable, use the `-var'
- option, e.g.:
-
- currDir -var My$Variable
-
- If you want to specify a maximum length, use the `-maxLen'
- option, e.g.
-
- currDir -maxLen 40
-
- will ensure that the name never exceeds 40 characters.
-
- You can't remove these variables in the normal way --
- *Unset will silently ignore your attempts. Therefore
- currDir has a `-remove' option which you can use, in
- conjunction with `-var' if necessary, to kill a variable if
- you don't want it any more.
-
- If you're stuck, typing
-
- currDir -help
-
- will provide you with some addmittedly fairly terse
- assitance.
- ___________________________________________________________
-
- Technical details
-
- currDir is written as an application since it can
- safely quit once it has set up the actual code variable.
- Making it a Utility was a possibility, but that can have
- the nasty side-effect of fragmenting the module area. It's
- unlikely you'll want to use it from anything other than the
- command line, so it shouldn't be that much of a problem.
- The program needs a little over 2K to run, so as long as
- you have a page of memory free you won't have any problems
- there.
-
- currDir was written in an evening, using the Acorn ARM
- Assembler, which is jolly good, and I recommend it.
-
- Straylight do not release source code. Don't bother asking
- for it.
- ___________________________________________________________
-
- Copying and distribution
-
- You may give copies of currDir and this documentation to
- anyone you want. You may not sell copies of either, except
- as part of a PD compilation disk, and even then not for
- more than 2 pounds sterling. You may not alter either the
- documentation or the application in any way.
- ___________________________________________________________
-