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#!/usr/bin/perl
#
# Program Summary:
#
# Name: dailystrips-clean
# Description: removes all downloaded dailystrips in the current directory
# that are older than a specified number of days
# Author: Andrew Medico <amedico@amedico.dhs.org>
# Created: 12 Feb 2002, 21:44 EST
# Last Modified: 21 Jun 2002, 03:28 EDT
# Current Revision: 1.0.1
#
# Set up
use strict;
no strict qw(refs);
use POSIX qw(strftime);
use Getopt::Long;
# Variables
my (%options, $version, $time_today, @files);
$version = "1.0.1";
$time_today = time;
# Get options
GetOptions(\%options, 'quiet|q','verbose|v','test|t','dir=s','archive|a','version|v','help|h')
or exit 1;
# Help and version override anything else
if ($options{'help'}) {
print
"Usage: $0 [OPTIONS] DAYS
DAYS is the number of days to keep.
Options:
-q --quiet Turn off progress messages
-v --verbose Turn on extra progress information, overrides -q
-t --test Do not actually remove files
-d --dir DIR Work in specified directory instead of current
directory
-a --archive Update archive.html file
-V --version Print version number
-h --help Print this help
Bugs and comments to dailystrips\@amedico.dhs.org\n";
exit;
}
if ($options{'version'}) {
print "dailystrips-clean version $version\n";
exit;
}
unless (defined $ARGV[0]) {
die "Error: no number of days specified\n";
} else {
$options{'days'} = $ARGV[0];
if ($options{'days'} =~ m/\D/) {
die "Error:number of days must be numeric\n";
}
if ($options{'days'} =~ m/\D/) {
die "Error:number of days must be numeric\n";
}
}
# verbose overrides quiet
if ($options{'verbose'} and $options{'quiet'}) {
undef $options{'quiet'};
}
# get list of existing files
if ($options{'dir'} and (not $options{'dir'} =~ /\/$/)) {
$options{'dir'} .= "/";
}
@files = grep(/\d{4}\.\d{2}\.\d{2}/, glob("$options{'dir'}*"));
for (@files) {
if ($options{'verbose'}) {
print "Existing file: $_\n";
}
}
# filter out files to keep
for (0 .. $options{'days'} - 1) {
my $save_day = strftime("\%Y.\%m.\%d", localtime ($time_today - (86400 * $_)));
unless ($options{'quiet'}) {
print "Keeping files for: $save_day\n";
}
@files = grep(!/$save_day/, @files);
}
# remove anything that's still on the list
for (@files) {
if ($options{'verbose'}) {
print "Removing file/directory: $_\n";
}
unless ($options{'test'}) {
if (-d $_) {
my $dir_not_empty;
foreach my $sub (glob("$_/*")) {
unless (unlink("$sub")) {
warn "Could not remove file $sub: $!\n";
$dir_not_empty = 1;
}
}
if ($dir_not_empty) {
warn "Directory $_ not empty, cannot remove\n";
} else {
rmdir($_) or warn "Could not remove directory $_: $!\n";
}
}
else {
unlink($_) or warn "Could not remove file $_: $!\n";
}
}
}
if ($options{'archive'})
{
if (open(ARCHIVE,"<$options{'dir'}archive.html"))
{
my $oldest = strftime("\%Y.\%m.\%d", localtime ($time_today - (86400 * ($options{'days'}-1))));
my $out;
while(<ARCHIVE>)
{
if (/(\d{4}\.\d{2}\.\d{2})/)
{
if ($1 lt $oldest)
{
$_ = "";
}
}
$out .= $_;
}
close(ARCHIVE);
if (open(ARCHIVE,">$options{'dir'}archive.html"))
{
print ARCHIVE $out;
}
else
{
warn "Error: cannot update archive.html - could not write file: $!\n";
}
}
else
{
warn "Error: cannot update archive.html - could not read file: $!\n";
}
}
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