/usr/bin/chewmail is in chewmail 1.3-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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=head1 NAME
chewmail - mail archiver
=head1 SYNOPSIS
B<chewmail> [OPTIONS] <MAILBOX> ...
=head1 DESCRIPTION
B<chewmail> is a program for archiving mail. It is inspired by the by the
Python-based B<archivemail>, but with more useful semantics. All mail
is archived to the mailbox specified with the B<--output-box> switch,
in mbox format. It can read mailboxes in mbox, Maildir and MH formats.
Internally, B<chewmail> uses L<Mail::Box>, so it support file names
and URLs supported by that module.
=cut
use strict;
use warnings;
use Mail::Box::Manager;
use Mail::Message;
use Date::Format;
use Date::Parse;
use Getopt::Long qw(:config no_ignore_case bundling);
my $version = '1.3';
my %output_boxes = ();
my $input_box_path;
my $input_box;
my $box_access;
my $manager = Mail::Box::Manager->new;
sub generate_outbox_path
{
my ($format, $timestamp) = @_;
return time2str($format, $timestamp);
}
sub include_message
{
my ($timestamp, $date, $days) = @_;
if ($date) {
return $timestamp < $date;
}
elsif ($days) {
return (time - $timestamp) > ($days * 24 * 60 * 60);
}
return 1;
}
sub usage
{
return "Usage: chewmail [OPTIONS] <MAILBOX> ...
Archive the messages in <MAILBOX>
-o, --output-box=MAILBOX-FORMAT Mailbox to archive messages to.
Accepts date conversion specifiers from
Date::Format.
-d, --days=DAYS-OLD Archive messages older than DAYS-OLD.
-D, --date=DATE Archive messages older than DATE.
-R, --only-read Only archive messages marked read.
--delete-immediately Write changes for every message archived.
--preserve-timestamp Preserve the atime and mtime on the input
mailbox.
-n, --dry-run Go through the motions, but no changes
are written to disk.
-v, --verbose Be more verbose.
-q, --quiet Output only error messages.
-V, --version Print the version number and exit.
-h, --help Print this information and exit.
Report bugs to <eric\@kuroneko.ca>.
";
}
=head1 OPTIONS
=over 4
=item B<-o> I<mailbox-format>, B<--output-box>=I<mailbox-format>
The mailbox to archive messages to. The mailbox is run through the
L<Date::Format> module, so it supports all it's conversion
specifiers. The date and time is relative to the messages timestamp,
or the current time if the timestamp is impossible to determine. A
sample of the conversion specifiers follows:
%% PERCENT
%b month abbr
%B month
%d numeric day of the month, with leading zeros (eg 01..31)
%e numeric day of the month, without leading zeros (eg 1..31)
%D MM/DD/YY
%G GPS week number (weeks since January 6, 1980)
%h month abbr
%H hour, 24 hour clock, leading 0's)
%I hour, 12 hour clock, leading 0's)
%j day of the year
%k hour
%l hour, 12 hour clock
%L month number, starting with 1
%m month number, starting with 01
%n NEWLINE
%o ornate day of month -- "1st", "2nd", "25th", etc.
%t TAB
%U week number, Sunday as first day of week
%w day of the week, numerically, Sunday == 0
%W week number, Monday as first day of week
%x date format: 11/19/94
%y year (2 digits)
%Y year (4 digits)
=item B<-d> I<days-old>, B<--days>=days-old
Only archive messages older than than this many days.
=item B<-D> I<date>, B<--date>=I<date>
Only archive messages old than this date. The I<date> can be any date
understood by Perl's L<Date::Parse> module.
=item B<-R>, B<--only-read>
Only archive messages that are marked seen or read.
=item B<--delete-immediately>
Synchonize the mailboxes after every message is moved. This will be
substantially slower but may provide better recovery for some mailbox
formats in the event of a crash.
=item B<--preserve-timestamp>
Preserve the atime and mtime of the input mailbox. This only affects
file-based mailboxes, such as mbox.
=item B<-n>, B<--dry-run>
Go through all the motions of archiving the mail, but don't actually
change any mailboxes.
=item B<-v>, B<--verbose>
Output more informational messages. Use multiple times for more
verbosity.
=item B<-q>, B<--quiet>
Don't output any messages other than error messages.
=item B<-V>, B<--version>
Print the version number then exit.
=item B<-h>, B<--help>
Print usage information then exit.
=back
=cut
# options parsing
my $output_box_format;
my $days = 0;
my $date = '';
my $delete_immediately = 0;
my $only_read = 0;
my $preserve_timestamp = 0;
my $dry_run = 0;
my $verbose = 0;
my $quiet = 0;
my $show_version = 0;
my $help = 0;
GetOptions('o|output-box=s' => \$output_box_format,
'd|days:i' => \$days,
'D|date:s' => \$date,
'R|only-read' => \$only_read,
'preserve-timestamp' => \$preserve_timestamp,
'v|verbose+' => \$verbose,
'q|quiet' => \$quiet,
'delete-immediately' => \$delete_immediately,
'n|dry-run' => \$dry_run,
'h|help' => \$help,
'V|version' => \$show_version)
or die "Configuration error\n\n" . usage;
if ($show_version) {
print "$version\n";
exit 0;
}
if ($help) {
print usage;
exit 0;
}
# If we're doing a dry run, for safety we want to open the mailboxes
# read-only
$box_access = $dry_run ? 'r' : 'rw';
die "Need to specify one mailbox to archive.\n\n" . usage if (@ARGV < 1);
die "Need to specify an output box.\n\n" . usage unless $output_box_format;
my $output_box_path;
my $output_box;
my $timestamp;
foreach my $input_box_path (@ARGV) {
my (@status, $atime, $mtime);
if (-f $input_box_path) {
@status = stat _;
($atime, $mtime) = ($status[8], $status[9]) if @status;
}
print "Opening mailbox: $input_box_path\n" if $verbose > 0;
$input_box = $manager->open(folder => $input_box_path,
access => $box_access,
remove_when_empty => 0)
or die "Cannot open folder $input_box_path\n";
$date = str2time($date) if ($date);
die "Cannot understand --date option.\n" if !defined($date);
$quiet = 0 if ($verbose > 0);
my @messages;
if ($only_read) {
@messages = $input_box->messages('seen');
}
else {
@messages = $input_box->messages();
}
my ($archived_count, $untouched_count) = (0, 0);
foreach my $message (@messages) {
# Hack to workaround bug in Mail::Box, should be removed once fixed
$message->head->load;
$timestamp = $message->timestamp || time;
if (include_message($timestamp, $date, $days)) {
$output_box_path = generate_outbox_path($output_box_format,
$timestamp);
if (!exists($output_boxes{$output_box_path})) {
$output_boxes{$output_box_path} =
$manager->open(folder => $output_box_path,
type => 'Mail::Box::Mbox',
create => 1, access => $box_access)
or die "Could not open $output_box_path\n";
print "Opening mailbox: $output_boxes{$output_box_path}\n"
if ($verbose > 0);
}
$output_box = $output_boxes{$output_box_path};
print "Archiving message: " . $message->messageId . "\n"
if $verbose > 2;
unless ($dry_run) {
$manager->copyMessage($output_box, $message)
or die "Could not copy message\n";
$message->delete;
}
$archived_count++;
if ($delete_immediately) {
# Write changes immediately, order matters
print "Synching mailboxes\n" if ($verbose > 1);
unless ($dry_run) {
$output_box->write;
$input_box->write;
}
}
}
else {
$untouched_count++;
}
}
print "Closing $input_box_path\n" if $verbose > 1;
$input_box->close;
utime $atime, $mtime, $input_box_path
if $atime && $mtime && $preserve_timestamp;
print "$input_box_path: " . int(@messages) . " messages considered, " .
"$archived_count archived, $untouched_count kept\n" unless $quiet;
}
foreach my $output_box (keys %output_boxes) {
print "Closing $output_box" if $verbose > 1;
$output_boxes{$output_box}->close;
}
=head1 EXAMPLES
Archive two day old messages in F<inbox> to F<inbox-old>:
chewmail --days 2 -o inbox-old inbox
Archive read messages to a mailbox named the year-month of the
message:
chewmail --only-read -o %Y-%m inbox
=head1 SEE ALSO
L<archivemail(1)>, L<Date::Parse>, L<Date::Format>, L<Mail::Box>
=head1 AUTHOR
Eric Dorland <eric@kuroneko.ca>
=cut
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