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fffb92da8e
Add a --remove-dups flag which removes duplicate files from search and thread results. Uses fdupes if installed. Otherwise it runs a size and Digest::SHA scan on each file to detect duplicates. Signed-off-by: Stefano Zacchiroli <zack@upsilon.cc>
297 lines
8 KiB
Perl
Executable file
297 lines
8 KiB
Perl
Executable file
#!/usr/bin/perl -w
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#
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# notmuch-mutt - notmuch (of a) helper for Mutt
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#
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# Copyright: © 2011-2012 Stefano Zacchiroli <zack@upsilon.cc>
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# License: GNU General Public License (GPL), version 3 or above
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#
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# See the bottom of this file for more documentation.
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# A manpage can be obtained by running "pod2man notmuch-mutt > notmuch-mutt.1"
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use strict;
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use warnings;
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use File::Path;
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use Getopt::Long qw(:config no_getopt_compat);
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use Mail::Internet;
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use Mail::Box::Maildir;
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use Pod::Usage;
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use String::ShellQuote;
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use Term::ReadLine;
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use Digest::SHA;
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use File::Which;
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my $xdg_cache_dir = "$ENV{HOME}/.cache";
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$xdg_cache_dir = $ENV{XDG_CACHE_HOME} if $ENV{XDG_CACHE_HOME};
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my $cache_dir = "$xdg_cache_dir/notmuch/mutt";
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# create an empty maildir (if missing) or empty an existing maildir"
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sub empty_maildir($) {
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my ($maildir) = (@_);
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rmtree($maildir) if (-d $maildir);
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my $folder = new Mail::Box::Maildir(folder => $maildir,
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create => 1);
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$folder->close();
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}
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# Match files by size and SHA-256; then delete duplicates
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sub builtin_remove_dups($) {
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my ($maildir) = @_;
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my (%size_to_files, %sha_to_files);
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# Group files by matching sizes
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foreach my $file (glob("$maildir/cur/*")) {
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my $size = -s $file;
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push(@{$size_to_files{$size}}, $file) if $size;
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}
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foreach my $same_size_files (values %size_to_files) {
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# Don't run sha unless there is another file of the same size
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next if scalar(@$same_size_files) < 2;
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%sha_to_files = ();
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# Group files with matching sizes by SHA-256
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foreach my $file (@$same_size_files) {
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open(my $fh, '<', $file) or next;
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binmode($fh);
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my $sha256hash = Digest::SHA->new(256)->addfile($fh)->hexdigest;
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close($fh);
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push(@{$sha_to_files{$sha256hash}}, $file);
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}
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# Remove duplicates
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foreach my $same_sha_files (values %sha_to_files) {
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next if scalar(@$same_sha_files) < 2;
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unlink(@{$same_sha_files}[1..$#$same_sha_files]);
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}
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}
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}
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# Use either fdupes or the built-in scanner to detect and remove duplicate
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# search results in the maildir
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sub remove_duplicates($) {
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my ($maildir) = @_;
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my $fdupes = which("fdupes");
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if ($fdupes) {
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system("$fdupes --hardlinks --symlinks --delete --noprompt"
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. " --quiet $maildir/cur/ > /dev/null");
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} else {
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builtin_remove_dups($maildir);
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}
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}
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# search($maildir, $remove_dups, $query)
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# search mails according to $query with notmuch; store results in $maildir
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sub search($$$) {
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my ($maildir, $remove_dups, $query) = @_;
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$query = shell_quote($query);
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empty_maildir($maildir);
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system("notmuch search --output=files $query"
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. " | sed -e 's: :\\\\ :g'"
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. " | xargs --no-run-if-empty ln -s -t $maildir/cur/");
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remove_duplicates($maildir) if ($remove_dups);
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}
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sub prompt($$) {
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my ($text, $default) = @_;
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my $query = "";
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my $term = Term::ReadLine->new( "notmuch-mutt" );
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my $histfile = "$cache_dir/history";
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$term->ornaments( 0 );
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$term->unbind_key( ord( "\t" ) );
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$term->MinLine( 3 );
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$histfile = $ENV{MUTT_NOTMUCH_HISTFILE} if $ENV{MUTT_NOTMUCH_HISTFILE};
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$term->ReadHistory($histfile) if (-r $histfile);
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while (1) {
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chomp($query = $term->readline($text, $default));
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if ($query eq "?") {
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system("man", "notmuch-search-terms");
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} else {
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$term->WriteHistory($histfile);
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return $query;
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}
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}
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}
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sub get_message_id() {
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my $mail = Mail::Internet->new(\*STDIN);
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$mail->head->get("message-id") =~ /^<(.*)>$/; # get message-id
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return $1;
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}
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sub search_action($$$@) {
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my ($interactive, $results_dir, $remove_dups, @params) = @_;
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if (! $interactive) {
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search($results_dir, $remove_dups, join(' ', @params));
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} else {
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my $query = prompt("search ('?' for man): ", join(' ', @params));
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if ($query ne "") {
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search($results_dir, $remove_dups, $query);
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}
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}
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}
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sub thread_action($$@) {
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my ($results_dir, $remove_dups, @params) = @_;
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my $mid = get_message_id();
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my $search_cmd = 'notmuch search --output=threads ' . shell_quote("id:$mid");
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my $tid = `$search_cmd`; # get thread id
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chomp($tid);
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search($results_dir, $remove_dups, $tid);
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}
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sub tag_action(@) {
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my $mid = get_message_id();
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system("notmuch tag "
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. shell_quote(join(' ', @_))
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. " id:$mid");
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}
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sub die_usage() {
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my %podflags = ( "verbose" => 1,
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"exitval" => 2 );
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pod2usage(%podflags);
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}
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sub main() {
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mkpath($cache_dir) unless (-d $cache_dir);
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my $results_dir = "$cache_dir/results";
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my $interactive = 0;
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my $help_needed = 0;
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my $remove_dups = 0;
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my $getopt = GetOptions(
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"h|help" => \$help_needed,
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"o|output-dir=s" => \$results_dir,
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"p|prompt" => \$interactive,
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"r|remove-dups" => \$remove_dups);
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if (! $getopt || $#ARGV < 0) { die_usage() };
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my ($action, @params) = ($ARGV[0], @ARGV[1..$#ARGV]);
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foreach my $param (@params) {
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$param =~ s/folder:=/folder:/g;
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}
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if ($help_needed) {
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die_usage();
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} elsif ($action eq "search" && $#ARGV == 0 && ! $interactive) {
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print STDERR "Error: no search term provided\n\n";
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die_usage();
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} elsif ($action eq "search") {
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search_action($interactive, $results_dir, $remove_dups, @params);
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} elsif ($action eq "thread") {
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thread_action($results_dir, $remove_dups, @params);
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} elsif ($action eq "tag") {
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tag_action(@params);
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} else {
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die_usage();
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}
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}
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main();
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__END__
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=head1 NAME
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notmuch-mutt - notmuch (of a) helper for Mutt
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=head1 SYNOPSIS
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=over
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=item B<notmuch-mutt> [I<OPTION>]... search [I<SEARCH-TERM>]...
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=item B<notmuch-mutt> [I<OPTION>]... thread < I<MAIL>
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=item B<notmuch-mutt> [I<OPTION>]... tag [I<TAGS>]... < I<MAIL>
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=back
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=head1 DESCRIPTION
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notmuch-mutt is a frontend to the notmuch mail indexer capable of populating
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a maildir with search results.
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=head1 OPTIONS
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=over 4
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=item -o DIR
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=item --output-dir DIR
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Store search results as (symlink) messages under maildir DIR. Beware: DIR will
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be overwritten. (Default: F<~/.cache/notmuch/mutt/results/>)
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=item -p
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=item --prompt
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Instead of using command line search terms, prompt the user for them (only for
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"search").
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=item -r
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=item --remove-dups
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Remove duplicates from search results.
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=item -h
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=item --help
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Show usage information and exit.
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=back
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=head1 INTEGRATION WITH MUTT
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notmuch-mutt can be used to integrate notmuch with the Mutt mail user agent
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(unsurprisingly, given the name). To that end, you should define macros like
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the following in your Mutt configuration (usually one of: F<~/.muttrc>,
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F</etc/Muttrc>, or a configuration snippet under F</etc/Muttrc.d/>):
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macro index <F8> \
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"<enter-command>unset wait_key<enter><shell-escape>notmuch-mutt -r --prompt search<enter><change-folder-readonly>~/.cache/notmuch/mutt/results<enter>" \
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"notmuch: search mail"
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macro index <F9> \
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"<enter-command>unset wait_key<enter><pipe-message>notmuch-mutt -r thread<enter><change-folder-readonly>~/.cache/notmuch/mutt/results<enter><enter-command>set wait_key<enter>" \
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"notmuch: reconstruct thread"
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macro index <F6> \
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"<enter-command>unset wait_key<enter><pipe-message>notmuch-mutt tag -- -inbox<enter>" \
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"notmuch: remove message from inbox"
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The first macro (activated by <F8>) prompts the user for notmuch search terms
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and then jump to a temporary maildir showing search results. The second macro
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(activated by <F9>) reconstructs the thread corresponding to the current mail
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and show it as search results. The third macro (activated by <F6>) removes the
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tag C<inbox> from the current message; by changing C<-inbox> this macro may be
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customised to add or remove tags appropriate to the users notmuch work-flow.
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To keep notmuch index current you should then periodically run C<notmuch
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new>. Depending on your local mail setup, you might want to do that via cron,
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as a hook triggered by mail retrieval, etc.
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=head1 SEE ALSO
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mutt(1), notmuch(1)
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=head1 AUTHOR
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Copyright: (C) 2011-2012 Stefano Zacchiroli <zack@upsilon.cc>
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License: GNU General Public License (GPL), version 3 or higher
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=cut
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