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Re^2: RE question; how to insert a digit between const[a-z]*3 && inc[0-9]*3?

by taint (Chaplain)
on Apr 16, 2013 at 17:53 UTC ( #1028978=note: print w/ replies, xml ) Need Help??


in reply to Re: RE question; how to insert a digit between const[a-z]*3 && inc[0-9]*3?
in thread RE question; how to insert a digit between const[a-z]*3 && inc[0-9]*3?

Greetings Ken, and thanks for the reply.
This looks like a complete solution!
Given that all of the files end in .html, and begin with abc
I should be able to simply read in the entire directory.

opendir(DIR, $dirname) or die "can't opendir $dirname: $!"; while (defined($file = readdir(DIR))) { # use your suggestion on "$dirname/$file" } closedir(DIR);
I'm still sorting it all out. But wanted to take the time to thank you
for your help.

Thanks again!

--chris

#!/usr/bin/perl -Tw
use perl::always;
my $perl_version = "5.12.4";
print $perl_version;


Comment on Re^2: RE question; how to insert a digit between const[a-z]*3 && inc[0-9]*3?
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Re^3: RE question; how to insert a digit between const[a-z]*3 && inc[0-9]*3?
by kcott (Abbot) on Apr 16, 2013 at 19:50 UTC

    Given that context, you might want to try something like this technique (untested):

    while (defined($file = readdir(DIR))) { next unless $file =~ /^(abc)(\d{1,3})(\.html)$/; rename "$dirname/$file" "$dirname/" . $1 . "0" x (4 - length $2) . + $2 . $3; }

    I'd also recommend that you try this with a print to ensure you're in the right directory and targetting the correct files before making thousands of changes; then change to rename. Some error checking/handling might also be useful.

    -- Ken

      Greetings Ken, and thanks again!
      Your example(s) both work exactly as you indicated they would.
      Took me awhile to sort it all out. But I'm afraid I wasn't as clear, or as concise
      as I could/should have been -- soory. :(
      I had already performed a mas-rename on the files by cobbling a sh(1) script, with the
      help of find(1), basename(1), cp(1), && rm(1) through a for loop.
      This is what left me with the task of correcting the references to the files previous
      names within the newly named files. This is where my request came in -- again, sorry for not better clarifying.
      I tried to apply your logic to the task of reading the contents of the files
      and applying it to their contents. But I guess I'm just not yet proficient enough in perl(1). :(
      So I got anxious, and mostly conquered the abc100 - abc999.html's
      via another sh(1) script
      #!/bin/sh - # fixem -- a simple stupid && inefficient shell script for name in $(find . -type f -name '*.html' -maxdepth 1) do # sed(1) recognizing Extended RE(s) sed -Ef fixem.sed <$name >temp.txt mv temp.txt $name done rm -f temp.txt
      fixem.sed
      /abc([1-9][0-9][0-9])\.html/s/abc/abc0/g
      While that shell script fixed most of the occurrences, it missed a few, and it
      also didn't address abc1 - 99.html. So now I'm going to try and figure out how
      to best attack/accomplish this same (il)logic in perl(1). :)

      Any pointers/guidance/solutions still greatly appreciated. :)

      Thanks again for everyones' time, and consideration.

      --chris

      #!/usr/bin/perl -Tw
      use perl::always;
      my $perl_version = "5.12.4";
      print $perl_version;

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