128 lines
3.9 KiB
Perl
Executable file
128 lines
3.9 KiB
Perl
Executable file
#!/usr/bin/perl
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use strict;
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use warnings;
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use Mail::Header;
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use File::Copy;
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if (@ARGV < 2) {
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print STDERR "usage: $0 <TYPE> <SOURCE_MAILDIR_FOLDER_PATH> [<MALDIRS_LOOK_FOR_DUPS_IN> ...]\n";
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exit 1;
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}
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my($TYPE, $MAILDIR_FOLDER) = ($ARGV[0], $ARGV[1]);
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die "Bad type, $TYPE" unless $TYPE =~ /^(unlink|svn|print)$/;
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my (@dupFolders) = @ARGV[2..$#ARGV];
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my %msgs; # indexed by Message-Id
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foreach my $folder (@dupFolders) {
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my @msgDirs = ("$folder/cur", "$folder/new");
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foreach my $dir (@msgDirs) {
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die "$MAILDIR_FOLDER must not be a maildir folder (or is unreadable by you), since $dir isn't a readable directory: $!"
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unless (-d $dir);
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}
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foreach my $dir (@msgDirs) {
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opendir(MAILDIR, $dir) or die "Unable to open directory $dir for reading: $!";
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while (my $file = readdir MAILDIR) {
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next if -d $file; # skip directories
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my $existing_file = "$dir/$file";
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open(MAIL_MESSAGE, "<", $existing_file) or
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die "unable to open $existing_file for reading: $!";
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my $header = new Mail::Header(\*MAIL_MESSAGE);
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my $fields = $header->header_hashref;
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my $id = $fields->{'Message-ID'}[0];
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chomp $id;
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if ($id !~ s/^\s*\<?\s*(\S+)\s*\>?.*$/$1/) {
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$id = $fields->{'Resent-Message-ID'}[0];
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chomp $id;
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unless ($id =~ s/^\s*\<?\s*(\S+)\s*\>?.*$/$1/) {
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warn "weirdly formatted, or missing Message-ID (or Resent-Message-ID), \"$id\" in $dir/$file";
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next;
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}
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}
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if (not defined $id or $id =~ /^\s*$/) {
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warn "$dir/$file has no message ID";
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next;
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}
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$id =~ s/^[\<\s]+//; $id =~ s/[\>\s]$//;
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# die "Duplicate message ID's $id\n" if defined $msgs{$id};
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$msgs{$id} = $fields;
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}
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close MAIL_MESSAGE;
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}
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close MAILDIR;
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}
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# This code shouldn't be all cut-and-pasty from the above, but I was in a hurry.
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my @msgDirs = ("$MAILDIR_FOLDER/cur", "$MAILDIR_FOLDER/new");
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foreach my $dir (@msgDirs) {
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die "$MAILDIR_FOLDER must not be a maildir folder (or is unreadable by you), since $dir isn't a readable directory: $!"
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unless (-d $dir);
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}
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foreach my $dir (@msgDirs) {
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opendir(MAILDIR, $dir) or die "Unable to open directory $dir for reading: $!";
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while (my $file = readdir MAILDIR) {
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next if -d $file; # skip directories
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my $existing_file = "$dir/$file";
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open(MAIL_MESSAGE, "<", $existing_file) or
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die "unable to open $existing_file for reading: $!";
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my $header = new Mail::Header(\*MAIL_MESSAGE);
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my $fields = $header->header_hashref;
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my $id = $fields->{'Message-ID'}[0];
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chomp $id;
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if ($id !~ s/^\s*\<?\s*(\S+)\s*\>?.*$/$1/) {
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$id = $fields->{'Resent-Message-ID'}[0];
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chomp $id;
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unless ($id =~ s/^\s*\<?\s*(\S+)\s*\>?.*$/$1/) {
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warn "weirdly formatted, or missing Message-ID (or Resent-Message-ID), \"$id\" in $dir/$file";
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next;
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}
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}
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$id =~ s/^[\<\s]+//; $id =~ s/[\>\s]$//;
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if (not defined $id or $id =~ /^\s*$/) {
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warn "$dir/$file has no message ID";
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next;
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}
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# If we already have this message elsehwere, then we simply remove it
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# from this folder here. Otherwise, we note that we have it by adding
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# it to %msgs.
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if (defined $msgs{$id}) {
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if ($TYPE eq "print") {
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print "$id\n";
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} elsif ($TYPE eq "svn") {
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system("svn rm \"$existing_file\"");
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die "Unable to unlink file $existing_file: $!"
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unless $? == 0;
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} elsif ($TYPE eq 'unlink') {
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print STDERR "Removing $existing_file\n";
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die "Unable to unlink $existing_file: $!"
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unless unlink($existing_file) == 1;
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} else {
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die "doing nothing here, type operation not known: $TYPE";
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}
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} else {
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$msgs{$id} = $fields;
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}
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close MAIL_MESSAGE;
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}
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close MAILDIR;
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}
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###############################################################################
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#
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# Local variables:
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# compile-command: "perl -c remove-dup-mails-from-maildir.plx"
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# End:
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