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Loading a directory to .cdsinit and looping through list of strings

snezana111

Hi,

my initial idea was to load a directory of custom SKILL routines to .cdsinit

then I found out load function can't load a directory (like for instance you can do in EMACS with load function...)

so, I searched a bit through examples and saw that people load custom .il/.ils routines by loading up a single loadSkill.il file which contains then a list of load(...) functions...

Then I wanted to make the loadSkill.il file with a procedure that actually reads the files in the specified directory and then loads them up...

For that purpose I've dug up the getDirFiles(t_path) function so I get my list of files as strings

What I wanted to do was to filter through that list of strings and remove the directories and "." and ".."

But for some reason when I use foreach function on that list of strings - the first element is skipped.

for example:

routines = getDirFiles(getShellEnvVar("SKILLDIR"))

foreach(element routines

unless(rexMatchp(".il$" element) || rexMatchp(".ils$" element) remd(element routines))

);foreach

routines = ("practice_SKILL" "cleanFrame.il" "test.il" "dummy.test" "123test" "toplevel.ils")

=> ("practice_SKILL" "cleanFrame.il" "test"il" "toplevel.ils")

I've tried with if's and for's too... when I get them right, for some reason the first string element in that list prevails.

So I have two questions:

Is there a better way to load a directory of custom SKILL routines to .cdsinit?

And what am I doing wrong with strings here?

  • berndfi

    Setof is the filter function for SKILL list which you could apply and overwrite the initial variable "routines" with a new value.

    routines = setof(element routines (rexMatchp(".il$" element) || rexMatchp(".ils$" element)))

    Nevertheless you could also do all at once and filter and load through the foreach loop

    skillDir = getShellEnvVar("SKILLDIR")
    routines = getDirFiles(skillDir)
     foreach(element routines
          when(rexMatchp(".il$" element) || rexMatchp(".ils$" element)
               load(strcat(skillDir "/" element))
         )
     )

  • Andrew Beckett

    The original code didn't work because you must use the return value of remd() - because otherwise the variable routines is still pointing at the original first entry in the list. You cannot just call remd() for its side effects (at least not safely). I have covered this in other posts on the forums.

    A simple way of finding all the files would be to do:

    routines=pcreMatchList("\\.ils?$" getDirFiles(skillDir))

    That will match all .il and .ils files in the directory. I used pcreMatchList because it offers a more powerful regular expression syntax than the "rex" equivalent (PCRE is the Perl-Compatible-Regular-Expression library).

    Regards,

    Andrew.

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