+sub index_terminate {
+ my (undef, $ibx) = @_; # $_[0] = signal name
+ $ibx->git->cleanup;
+}
+
+sub index_inbox {
+ my ($ibx, $im, $opt) = @_;
+ require PublicInbox::InboxWritable;
+ my $jobs = delete $opt->{jobs} if $opt;
+ if (my $pr = $opt->{-progress}) {
+ $pr->("indexing $ibx->{inboxdir} ...\n");
+ }
+ local @SIG{keys %SIG} = values %SIG;
+ setup_signals(\&index_terminate, $ibx);
+ my $idx = { current_info => $ibx->{inboxdir} };
+ local $SIG{__WARN__} = sub {
+ return if PublicInbox::Eml::warn_ignore(@_);
+ warn($idx->{current_info}, ': ', @_);
+ };
+ if ($ibx->version == 2) {
+ eval { require PublicInbox::V2Writable };
+ die "v2 requirements not met: $@\n" if $@;
+ $ibx->{-creat_opt}->{nproc} = $jobs;
+ my $v2w = $im // $ibx->importer($opt->{reindex} // $jobs);
+ if (defined $jobs) {
+ if ($jobs == 0) {
+ $v2w->{parallel} = 0;
+ } else {
+ my $n = $v2w->{shards};
+ if ($jobs < ($n + 1) && !$opt->{reshard}) {
+ warn <<EOM;
+Unable to respect --jobs=$jobs on index, inbox was created with $n shards
+EOM
+ }
+ }
+ }
+ $idx = $v2w;
+ } else {
+ require PublicInbox::SearchIdx;
+ $idx = PublicInbox::SearchIdx->new($ibx, 1);
+ }
+ $idx->index_sync($opt);
+ $idx->{nidx} // 0; # returns number processed
+}
+
+sub progress_prepare ($;$) {
+ my ($opt, $dst) = @_;
+
+ # public-inbox-index defaults to quiet, -xcpdb and -compact do not
+ if (defined($opt->{quiet}) && $opt->{quiet} < 0) {
+ $opt->{quiet} = !$opt->{verbose};
+ }
+ if ($opt->{quiet}) {
+ open my $null, '>', '/dev/null' or
+ die "failed to open /dev/null: $!\n";
+ $opt->{1} = $null; # suitable for spawn() redirect
+ } else {
+ $opt->{verbose} ||= 1;
+ $dst //= *STDERR{GLOB};
+ $opt->{-progress} = sub { print $dst @_ };
+ }
+}
+
+# same unit factors as git:
+sub parse_unsigned ($) {
+ my ($val) = @_;
+
+ $$val =~ /\A([0-9]+)([kmg])?\z/i or return;
+ my ($n, $unit_factor) = ($1, $2 // '');
+ my %u = ( k => 1024, m => 1024**2, g => 1024**3 );
+ $$val = $n * ($u{lc($unit_factor)} // 1);
+ 1;
+}
+
+sub index_prepare ($$) {
+ my ($opt, $cfg) = @_;
+ my $env;
+ if ($opt->{compact}) {
+ require PublicInbox::Xapcmd;
+ PublicInbox::Xapcmd::check_compact();
+ $opt->{compact_opt} = { -coarse_lock => 1, compact => 1 };
+ if (defined(my $jobs = $opt->{jobs})) {
+ $opt->{compact_opt}->{jobs} = $jobs;
+ }
+ }
+ for my $k (qw(max_size batch_size)) {
+ my $git_key = "publicInbox.index".ucfirst($k);
+ $git_key =~ s/_([a-z])/\U$1/g;
+ defined(my $v = $opt->{$k} // $cfg->{lc($git_key)}) or next;
+ parse_unsigned(\$v) or die "`$git_key=$v' not parsed\n";
+ $v > 0 or die "`$git_key=$v' must be positive\n";
+ $opt->{$k} = $v;
+ }
+
+ # out-of-the-box builds of Xapian 1.4.x are still limited to 32-bit
+ # https://getting-started-with-xapian.readthedocs.io/en/latest/concepts/indexing/limitations.html
+ $opt->{batch_size} and
+ $env = { XAPIAN_FLUSH_THRESHOLD => '4294967295' };
+
+ for my $k (qw(sequential-shard)) {
+ my $git_key = "publicInbox.index".ucfirst($k);
+ $git_key =~ s/-([a-z])/\U$1/g;
+ defined(my $s = $opt->{$k} // $cfg->{lc($git_key)}) or next;
+ defined(my $v = $cfg->git_bool($s))
+ or die "`$git_key=$s' not boolean\n";
+ $opt->{$k} = $v;
+ }
+ for my $k (qw(since until)) {
+ my $v = $opt->{$k} // next;
+ $opt->{reindex} or die "--$k=$v requires --reindex\n";
+ }
+ $env;
+}
+
+sub do_chdir ($) {
+ my $chdir = $_[0] // return;
+ for my $d (@$chdir) {
+ next if $d eq ''; # same as git(1)
+ chdir $d or die "cd $d: $!";
+ }
+}
+