proxy-man has asked for the wisdom of the Perl Monks concerning the following question:

I am just curious, do we have a way to intercept an exception during glob execution? Say, a directory does not belong to our permissions or something like that. My answer is - NO, glob does not allow us to do this. What is about your answer? Thanks a lot.

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Re: perl glob and an exception
by Corion (Patriarch) on Sep 25, 2015 at 09:25 UTC

    There is no need for glob to allow that. The standard mechanism is eval to catch exceptions in Perl.

[reply]
      eval can catch runtime error, it does not work for a case below:

      user@host: mkdir ~/test

      user@host: touch ~/test/file1.txt

      user@host: chmod 000 ~/test 

      ### perl code 

my $dir   = '/home/user/test';
my @files = eval { glob("$dir/*.txt") };

print "$@" if $@;           # here is no runtime error
print Dumper(\@files);      # shows an empty list

      [download]

[reply]
[d/l]

        So, what is your question? If there is no exception, you can't catch it either.

        Maybe you wanted to ask how glob can tell you whether there was a problem with one of the filespecs?

        For that, you will have to use opendir and readdir instead, and check for errors yourself.

[reply]
Re: perl glob and an exception
by Anonymous Monk on Sep 25, 2015 at 09:27 UTC
[reply]
[d/l]

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