diff options
Diffstat (limited to 'lib/PublicInbox/LeiMailDiff.pm')
| -rw-r--r-- | lib/PublicInbox/LeiMailDiff.pm | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/lib/PublicInbox/LeiMailDiff.pm b/lib/PublicInbox/LeiMailDiff.pm new file mode 100644 index 00000000..a29ae225 --- /dev/null +++ b/lib/PublicInbox/LeiMailDiff.pm @@ -0,0 +1,111 @@ +# Copyright (C) all contributors <meta@public-inbox.org> +# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt> + +# The "lei mail-diff" sub-command, diffs input contents against +# the first message of input +package PublicInbox::LeiMailDiff; +use strict; +use v5.10.1; +use parent qw(PublicInbox::IPC PublicInbox::LeiInput); +use File::Temp 0.19 (); # 0.19 for ->newdir +use PublicInbox::Spawn qw(spawn which); +use PublicInbox::MsgIter qw(msg_part_text); +use File::Path qw(remove_tree); +use PublicInbox::ContentHash qw(content_digest); +require PublicInbox::LeiRediff; +use Data::Dumper (); + +sub write_part { # Eml->each_part callback + my ($ary, $self) = @_; + my ($part, $depth, $idx) = @$ary; + if ($idx ne '1' || $self->{lei}->{opt}->{'raw-header'}) { + open my $fh, '>', "$self->{curdir}/$idx.hdr" or die "open: $!"; + print $fh ${$part->{hdr}} or die "print $!"; + close $fh or die "close $!"; + } + my $ct = $part->content_type || 'text/plain'; + my ($s, $err) = msg_part_text($part, $ct); + my $sfx = defined($s) ? 'txt' : 'bin'; + open my $fh, '>', "$self->{curdir}/$idx.$sfx" or die "open: $!"; + print $fh ($s // $part->body) or die "print $!"; + close $fh or die "close $!"; +} + +sub dump_eml ($$$) { + my ($self, $dir, $eml) = @_; + local $self->{curdir} = $dir; + mkdir $dir or die "mkdir($dir): $!"; + $eml->each_part(\&write_part, $self); + + open my $fh, '>', "$dir/content_digest" or die "open: $!"; + my $dig = PublicInbox::ContentDigestDbg->new($fh); + local $Data::Dumper::Useqq = 1; + local $Data::Dumper::Terse = 1; + content_digest($eml, $dig); + print $fh "\n", $dig->hexdigest, "\n" or die "print $!"; + close $fh or die "close: $!"; +} + +sub prep_a ($$) { + my ($self, $eml) = @_; + $self->{tmp} = File::Temp->newdir('lei-mail-diff-XXXX', TMPDIR => 1); + dump_eml($self, "$self->{tmp}/a", $eml); +} + +sub diff_a ($$) { + my ($self, $eml) = @_; + ++$self->{nr}; + my $dir = "$self->{tmp}/N$self->{nr}"; + dump_eml($self, $dir, $eml); + my $cmd = [ qw(git diff --no-index) ]; + my $lei = $self->{lei}; + PublicInbox::LeiRediff::_lei_diff_prepare($lei, $cmd); + push @$cmd, qw(-- a), "N$self->{nr}"; + my $rdr = { -C => "$self->{tmp}" }; + @$rdr{1, 2} = @$lei{1, 2}; + my $pid = spawn($cmd, $lei->{env}, $rdr); + waitpid($pid, 0); + $lei->child_error($?) if $?; # for git diff --exit-code + File::Path::remove_tree($self->{curdir}); +} + +sub input_eml_cb { # used by PublicInbox::LeiInput::input_fh + my ($self, $eml) = @_; + $self->{tmp} ? diff_a($self, $eml) : prep_a($self, $eml); +} + +sub lei_mail_diff { + my ($lei, @argv) = @_; + $lei->{opt}->{'in-format'} //= 'eml'; + my $self = bless {}, __PACKAGE__; + $self->prepare_inputs($lei, \@argv) or return; + my $isatty = -t $lei->{1}; + $lei->{opt}->{color} //= $isatty; + $lei->start_pager if $isatty; + my $ops = {}; + $lei->{auth}->op_merge($ops, $self) if $lei->{auth}; + (my $op_c, $ops) = $lei->workers_start($self, 1, $ops); + $lei->{wq1} = $self; + $lei->{-err_type} = 'non-fatal'; + net_merge_all_done($self) unless $lei->{auth}; + $lei->wait_wq_events($op_c, $ops); +} + +no warnings 'once'; +*net_merge_all_done = \&PublicInbox::LeiInput::input_only_net_merge_all_done; + +package PublicInbox::ContentDigestDbg; +use strict; +use v5.10.1; +use Data::Dumper; + +sub new { bless { dig => Digest::SHA->new(256), fh => $_[1] }, __PACKAGE__ } + +sub add { + $_[0]->{dig}->add($_[1]); + print { $_[0]->{fh} } Dumper($_[1]) or die "print $!"; +} + +sub hexdigest { $_[0]->{dig}->hexdigest; } + +1; |