#!/usr/bin/perl -ln

use strict;
use warnings;

sub expand;
sub doit;

print for expand $_;

sub expand {
    local $_=shift;
    return doit $`, (split /:/, $1), $' if /\{([\w:]+)\}/;
    return doit $`, $1 .. $2 , $' if /\[(\w+):(\w+)\]/;
    $_;
}

sub doit {
    my ($pre,$post)=(shift,pop);
    map { my $pre=$pre . $_; 
        map $pre . $_, expand $post } @_;
}

__END__

[download]

Original description:

("specifications" have changed too)
This is another short program that for me is a complete application, and I hope that this time there's not a common utility to do the same...

Basically it expands strings of the form 

foo[01:100]bar-{fred:barney:wilma}

[download]
to the list 
foo01bar-fred
foo02bar-fred
...
foo100bar-fred
foo01bar-barney
...
foo100bar-wilma

[download]
More info here!

In reply to Original code [was "Re: String expansion script"] by blazar
in thread String expansion script by blazar

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