Searching for Perl Modules in Files

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks!
I need to build a report that will show all Perl modules used by all programs used at work. It means that I have to go through a lot of directories and open every Perl script and look for all Perl modules used in the program, its crazy. I know as a start I can use something like this:

use File::Find;

find(\&handleFind, '../directory1');

sub handleFind {
    my $foundFile = $File::Find::name;
    print "$foundFile\n" if ($foundFile =~ /\.pl?$/i);
}
[download]

Does anyone here have anything similar that I can start my quest with? Thanks for looking!

Comment on Searching for Perl Modules in Files Download Code

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Re: Searching for Perl Modules in Files by marto (Cardinal) on Aug 27, 2010 at 15:44 UTC
Take a look at Module::ScanDeps. Update: Once you've got your script to scan for all of the perl scripts (using File::Find, or File::Find::Rule which has example code for this) use Module::ScanDeps to find dependencies.	[reply]
Re^2: Searching for Perl Modules in Files by Anonymous Monk on Aug 27, 2010 at 17:28 UTC
I can use "File::Find::Rule" that works good, any sample about how I could use "Module::ScanDeps" to scan these files for any Perl modules? `use File::Find::Rule; my $directory="../mydir"; # find all the subdirectories of a given directory my @subdirs = File::Find::Rule->directory->in( $directory ); my $rule = File::Find::Rule->new; $rule->file; $rule->name( '*.pl' ); my @files = $rule->in( $directory ); foreach (@files) { print "$_\n"; }` [download]	[reply] [d/l]
Re^3: Searching for Perl Modules in Files by vek (Prior) on Aug 27, 2010 at 21:40 UTC
From the docs of Module::ScanDeps I'd try something like the following (untested): `# using your @files array as the starting point... my $dependencies = scan_deps( files => \@files, recurse => 1, );` [download]	[reply] [d/l]
Re^3: Searching for Perl Modules in Files by Anonymous Monk on Aug 27, 2010 at 18:06 UTC
I got to a point where I can search for "use" and print every line that uses "use" assuming that it is followed by a Perl module, can someone add to this so it can print the name of the file/script been searched and only "grep" a line that has "use modulename;". Otherwise it is grabbing lines with comments with the word "use" in it. That would take care of this, any help? Here is the code so far: `use File::Find::Rule; my $directory="../yourdirectory"; # find all the subdirectories of a given directory my @subdirs = File::Find::Rule->directory->in( $directory ); my $rule = File::Find::Rule->new; $rule->file; $rule->name( '*.pl' ); my @files = $rule->in( $directory ); foreach my $files(@files) { open (FILE, "$files"); while($line= <FILE> ){ print "$line" if grep /\buse\b/, $line; } close FILE; }` [download]	[reply] [d/l]