Re: a task for a regular expression expert

Regular expressions are the vice-grips in the Perl programmer's toolbox. They're important tools. They're useful for just about everything. And overusing them can get you into sticky situations.

Here's code to transform 'artist_name-title_with_other(chars)' into 'Artist Name - Title With Other Chars'.

my $song = q{xecutioners-you_cant_scratch_(skit)};

# Split up artist and title of song
my ($artist, $title) = split(/-/, $song, 2);

# Turn the artist and title into human text, then stick
# them back together with ' - '.
my $new_song = humanize_text($artist) . ' - ' . humanize_text($title);

print $new_song, "\n";

# Runs a piping operation. From back to front, here's what
# happens:
#   1. We split 'something_like(this)' into 'something',
#      'like', 'this'
#   2. We capitalize the first letter of every word
#   3. We stick the list back together delimited with spaces
sub humanize_text {
    return join(' ', map(ucfirst($_), split(/[^a-zA-Z]+/, $_[0])) );
}

stephen

[emilford]

Thanks Stephen, this is a really good start! I ran the code on a few sample file names and it works fairly well. There are, however, still a few kinks that I need to work through.



1) some song titles have numbers in them - these are removed with curr
+ent code

2) what about &'s and apostrophes - these are also removed

3) i also need to find a way to remove certain key words that don't re
+ally belong in the title

Either way, the code is a great start. Thanks. - Eric