I write science-fiction for teens, and sometimes have to save documents into a non-text format. Not really an issue, but I like to make backups, and backups of my backups, because I've lost work before. I thought I had a slight problem, maybe a dozen or so files with five or six copies. No worries! I could save them as text, put them into version control, and then get rid of the old files. Life is good.
The first pass at code said I had 21 files and 167 copies. Not good, but doable. Then I looked at the directory list and saw a lot of directories that should be searched were missing from the list. Going back to the code, I realized that there wasn't anything to recurse into a directory to see if there were more directories to be searched. Fixed that. Proud of myself, I ran the code again:
With 161 unique files, there are 7621 copies.
Oh boy...maybe I have a problem...
The code below is a work in progress. I'm setting it up so that I can exclude the version controlled originals. Future steps include removing duplicate files and empty directories. Feedback is welcome! Code Repo
#!/usr/bin/env perl
# name: find_copies.pl
# version: 0.0.2
# date: 20210223
# desc: Tool to help clean up old versions of files.
## TODO
use strict;
use warnings;
use File::Basename;
use Data::Dumper;
use Getopt::Long;
my %known_dirs;
my %known_files;
my @dir_queue;
# Used to see how many copies we have.
my $total_file_count = 0;
my $actual_file_count = 0;
my $log = 0; # set to 1 with the --log option.
my $exclude_list_file;
my %exclude_list;
my $exclude_dir_file;
my %exclude_dir;
my $seed_file; # This is just a seed file, the results of 'locate
+<filename>'
sub usage {
print "Usage: find_copies.pl --file <path/seed_file> [ --log | --exc
+lude_list <file of files to not deal with> ] \n";
exit;
};
# Pretty sure these could be made into one method.
sub build_exclude_dir {
open my $exclude_dirs, '<', $exclude_dir_file or die "Can't open $ex
+clude_dir_file: $!";
for my $dir ( <$exclude_dirs> ) {
chomp $dir;
if ( -d $dir ) {
$exclude_dir{$dir} = 1;
}
}
close $exclude_dirs;
}
sub build_exclude_list {
open my $exclude_files, '<', $exclude_list_file or die "Can't open $
+exclude_list_file: $!";
for my $file ( <$exclude_files> ) {
chomp $file;
$exclude_list{$file} = 1;
}
close $exclude_files;
}
sub build_file_list {
foreach my $search_dir ( @dir_queue ) {
opendir( my $dir, $search_dir ) or die "Can't open $search_dir: $!
+";
foreach my $file ( readdir($dir)) {
next if $file =~ m/^\.\.?$/;
if ( -d "$search_dir/$file" ) {
next if ( defined ($exclude_dir{"$search_dir/$file"}) );
$known_dirs{"$search_dir/$file"} = 1;
push ( @dir_queue, "$search_dir/$file");
} else {
next if ( defined( $exclude_list{$file} ));
$total_file_count++;
my $size = -s "$search_dir/$file";
$known_files{$file}{$size} = 1;
}
}
closedir($dir);
}
}
sub show_log {
print Dumper(%known_files);
$actual_file_count = scalar(keys(%known_files));
print "With $actual_file_count unique files, there are $total_file_c
+ount copies.\n";
my @single_version_files;
my @multiple_version_files;
foreach my $file ( keys( %known_files ) ){
my @values = keys(%{$known_files{$file}});
if ( scalar(@values) > 1 ) {
push @multiple_version_files, $file;
} else {
push @single_version_files, $file;
}
}
@multiple_version_files = sort(@multiple_version_files);
@single_version_files = sort(@single_version_files);
if ( scalar( @multiple_version_files ) ) {
print "Files with multiple versions:\n";
foreach my $f ( @multiple_version_files ) {
print "\t $f \n";
}
}
if ( scalar( @single_version_files ) ){
print "Files with a single version:\n";
foreach my $f ( @single_version_files ) {
print "\t $f \n";
}
}
if ( keys(%exclude_dir) ){
print "excluded directories:\n";
foreach my $dir ( keys(%exclude_dir) ){
print "\t $dir\n";
}
}
if ( keys( %exclude_list ) ) {
print "excluded files:\n";
foreach my $file ( keys( %exclude_list ) ){
print "\t $file\n";
}
}
if ( keys(%known_dirs) ) {
print "directory search list:\n";
foreach my $dir ( keys( %known_dirs )) {
print "\t $dir\n";
}
}
}
GetOptions(
"--log" => \$log,
"--file=s" => \$seed_file,
"--exclude_files=s" => \$exclude_list_file,
"--exclude_dirs=s" => \$exclude_dir_file,
);
usage() unless ( defined($seed_file) );
open my $seed_data_file, '<', $seed_file or die "Can't open $seed_file
+: $!";
build_exclude_list() if $exclude_list_file;
build_exclude_dir() if $exclude_dir_file;
# Build the list of directories to search.
for my $line ( <$seed_data_file>) {
chomp $line;
my $dirname = dirname($line);
$known_dirs{$dirname} = 1 unless defined( $exclude_dir{$dirname} );
push( @dir_queue, $dirname);
}
close $seed_data_file;
build_file_list();
show_log() if $log;
Chronicler: The Domici War (domiciwar.net)
General Ne'er-do-well (github.com/LeamHall)
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.