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-rw-r--r--lib/PublicInbox/LeiQuery.pm241
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diff --git a/lib/PublicInbox/LeiQuery.pm b/lib/PublicInbox/LeiQuery.pm
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+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# handles "lei q" command and provides internals for
+# several other sub-commands (up, lcat, ...)
+package PublicInbox::LeiQuery;
+use v5.12;
+
+sub prep_ext { # externals_each callback
+        my ($lxs, $exclude, $loc) = @_;
+        $lxs->prepare_external($loc) unless $exclude->{$loc};
+}
+
+sub _start_query { # used by "lei q" and "lei up"
+        my ($self) = @_;
+        require PublicInbox::LeiOverview;
+        PublicInbox::LeiOverview->new($self) or return;
+        my $opt = $self->{opt};
+        require PublicInbox::OverIdx; # loads DBI
+        PublicInbox::OverIdx::fork_ok($opt);
+        my ($xj, $mj) = split(/,/, $opt->{jobs} // '');
+        (defined($xj) && $xj ne '' && $xj !~ /\A[1-9][0-9]*\z/) and
+                die "`$xj' search jobs must be >= 1\n";
+        my $lxs = $self->{lxs};
+        $xj ||= $lxs->concurrency($opt); # allow: "--jobs ,$WRITER_ONLY"
+        my $nproc = $lxs->detect_nproc || 1; # don't memoize, schedtool(1) exists
+        $xj = $nproc if $xj > $nproc;
+        $lxs->{-wq_nr_workers} = $xj;
+        (defined($mj) && $mj !~ /\A[1-9][0-9]*\z/) and
+                die "`$mj' writer jobs must be >= 1\n";
+        my $l2m = $self->{l2m};
+        # we use \1 (a ref) to distinguish between default vs. user-supplied
+        if ($l2m && grep { $opt->{$_} //= \1 } (qw(mail-sync import-remote
+                                                        import-before))) {
+                $self->_lei_store(1)->write_prepare($self);
+                if ($opt->{'mail-sync'}) {
+                        my $lms = $l2m->{-lms_rw} = $self->lms(1);
+                        $lms->lms_write_prepare->lms_pause; # just create
+                }
+        }
+        $l2m and $l2m->{-wq_nr_workers} //= $mj // do {
+                # keep some CPU for git, and don't overload IMAP destinations
+                my $n = int($nproc * 0.75 + 0.5);
+                $self->{net} && $n > 4 ? 4 : $n;
+        };
+
+        # descending docid order is cheapest, MUA controls sorting order
+        $self->{mset_opt}->{relevance} //= -2 if $l2m || $opt->{threads};
+
+        my $tot = $self->{mset_opt}->{total} //= $self->{opt}->{limit} // 10000;
+        $self->{mset_opt}->{limit} = $tot > 10000 ? 10000 : $tot;
+        $self->{mset_opt}->{offset} //= 0;
+        $self->{mset_opt}->{threads} //= $opt->{threads};
+
+        if ($self->{net}) {
+                require PublicInbox::LeiAuth;
+                $self->{auth} = PublicInbox::LeiAuth->new
+        }
+        $lxs->do_query($self);
+}
+
+sub do_qry { # do_env cb
+        my ($lei) = @_;
+        $lei->{mset_opt}->{q_raw} = $lei->{mset_opt}->{qstr}
+                                                = delete $lei->{stdin_buf};
+        $lei->{lse}->query_approxidate($lei->{lse}->git,
+                                        $lei->{mset_opt}->{qstr});
+        _start_query($lei);
+}
+
+# make the URI||PublicInbox::{Inbox,ExtSearch} a config-file friendly string
+sub cfg_ext ($) {
+        my ($x) = @_;
+        $x->isa('URI') ? "$x" : ($x->{inboxdir} // $x->{topdir});
+}
+
+sub lxs_prepare {
+        my ($self) = @_;
+        require PublicInbox::LeiXSearch;
+        # prepare any number of LeiXSearch || LeiSearch || Inbox || URL
+        my $lxs = $self->{lxs} = PublicInbox::LeiXSearch->new;
+        my $opt = $self->{opt};
+        my @only = @{$opt->{only} // []};
+        # --local is enabled by default unless --only is used
+        # we'll allow "--only $LOCATION --local"
+        my $sto = $self->_lei_store(1);
+        $self->{lse} = $sto->search;
+        if ($opt->{'local'} //= scalar(@only) ? 0 : 1) {
+                $lxs->prepare_external($self->{lse});
+        }
+        if (@only) {
+                my $only;
+                for my $loc (@only) {
+                        my @loc = $self->get_externals($loc) or return;
+                        for (@loc) {
+                                my $x = $lxs->prepare_external($_);
+                                push(@$only, cfg_ext($x)) if $x;
+                        }
+                }
+                $opt->{only} = $only if $only;
+        } else {
+                my (@ilocals, @iremotes, $incl);
+                for my $loc (@{$opt->{include} // []}) {
+                        my @loc = $self->get_externals($loc) or return;
+                        for (@loc) {
+                                my $x = $lxs->prepare_external($_);
+                                push(@$incl, cfg_ext($x)) if $x;
+                        }
+                        @ilocals = @{$lxs->{locals} // []};
+                        @iremotes = @{$lxs->{remotes} // []};
+                }
+                $opt->{include} = $incl if $incl;
+                # --external is enabled by default, but allow --no-external
+                if ($opt->{external} //= 1) {
+                        my $ex = $self->canonicalize_excludes($opt->{exclude});
+                        my @excl = keys %$ex;
+                        $opt->{exclude} = \@excl if scalar(@excl);
+                        $self->externals_each(\&prep_ext, $lxs, $ex);
+                        $opt->{remote} //= !($lxs->locals - $opt->{'local'});
+                        $lxs->{locals} = \@ilocals if !$opt->{'local'};
+                        $lxs->{remotes} = \@iremotes if !$opt->{remote};
+                }
+        }
+        ($lxs->locals || $lxs->remotes) ? ($self->{lxs} = $lxs) :
+                die("no local or remote inboxes to search\n");
+}
+
+# the main "lei q SEARCH_TERMS" method
+sub lei_q {
+        my ($self, @argv) = @_;
+        PublicInbox::Config->json; # preload before forking
+        my $lxs = lxs_prepare($self) or return;
+        $self->ale->refresh_externals($lxs, $self);
+        my $opt = $self->{opt};
+        my %mset_opt;
+        $mset_opt{asc} = $opt->{'reverse'} ? 1 : 0;
+        if (defined(my $sort = $opt->{'sort'})) {
+                if ($sort eq 'relevance') {
+                        $mset_opt{relevance} = 1;
+                } elsif ($sort eq 'docid') {
+                        $mset_opt{relevance} = $mset_opt{asc} ? -1 : -2;
+                } elsif ($sort =~ /\Areceived(?:-?[aA]t)?\z/) {
+                        # the default
+                } else {
+                        die "unrecognized --sort=$sort\n";
+                }
+                $opt->{save} and return
+                        $self->fail('--save and --sort are incompatible');
+        }
+        $self->{mset_opt} = \%mset_opt;
+
+        if ($opt->{stdin}) {
+                return $self->fail(<<'') if @argv;
+no query allowed on command-line with --stdin
+
+                return $self->slurp_stdin(\&do_qry);
+        }
+        chomp(@argv) and $self->qerr("# trailing `\\n' removed");
+        $mset_opt{q_raw} = [ @argv ]; # copy
+        $mset_opt{qstr} =
+                $self->{lse}->query_argv_to_string($self->{lse}->git, \@argv);
+        _start_query($self);
+}
+
+# shell completion helper called by lei__complete
+sub _complete_q {
+        my ($self, @argv) = @_;
+        join('', @argv) =~ /\bL:\S*\z/ and
+                return eval { $self->_lei_store->search->all_terms('L') };
+        my @cur;
+        my $cb = $self->lazy_cb(qw(forget-external _complete_));
+        while (@argv) {
+                if ($argv[-1] =~ /\A(?:-I|(?:--(?:include|exclude|only)))\z/) {
+                        my @c = $cb->($self, @cur);
+                        # try basename match:
+                        if (scalar(@cur) == 1 && index($cur[0], '/') < 0) {
+                                my $all = $self->externals_each;
+                                my %bn;
+                                for my $loc (keys %$all) {
+                                        my $bn = (split(m!/!, $loc))[-1];
+                                        ++$bn{$bn};
+                                }
+                                push @c, grep {
+                                        $bn{$_} == 1 && /\A\Q$cur[0]/
+                                } keys %bn;
+                        }
+                        return @c if @c;
+                }
+                unshift(@cur, pop @argv);
+        }
+        ();
+}
+
+# Stuff we may pass through to curl (as of 7.64.0), see curl manpage for
+# details, so most options which make sense for HTTP/HTTPS (including proxy
+# support for Tor and other methods of getting past weird networks).
+# Most of these are untested by us, some may not make sense for our use case
+# and typos below are likely.
+# n.b. some short options (-$NUMBER) are not supported since they conflict
+# with other "lei q" switches.
+# FIXME: Getopt::Long doesn't easily let us support support options with
+# '.' in them (e.g. --http1.1)
+# TODO: should we depend on "-c http.*" options for things which have
+# analogues in git(1)? that would reduce likelihood of conflicts with
+# our other CLI options
+# Note: some names are renamed to avoid potential conflicts,
+# see %lei2curl in lib/PublicInbox/LeiCurl.pm
+sub curl_opt { qw(
+        curl-config=s@
+        abstract-unix-socket=s anyauth basic cacert=s capath=s
+        cert-status cert-type cert=s ciphers=s
+        connect-timeout=s connect-to=s cookie-jar=s cookie=s crlfile=s
+        digest disable dns-interface=s dns-ipv4-addr=s dns-ipv6-addr=s
+        dns-servers=s doh-url=s egd-file=s engine=s false-start
+        happy-eyeballs-timeout-ms=s haproxy-protocol header=s@
+        http2-prior-knowledge http2 insecure
+        interface=s ipv4 ipv6 junk-session-cookies
+        key-type=s key=s limit-rate=s local-port=s location-trusted location
+        max-redirs=i max-time=s negotiate netrc-file=s netrc-optional netrc
+        no-alpn no-buffer no-npn no-sessionid noproxy=s ntlm-wb ntlm
+        pass=s pinnedpubkey=s post301 post302 post303 preproxy=s
+        proxy-anyauth proxy-basic proxy-cacert=s proxy-capath=s
+        proxy-cert-type=s proxy-cert=s proxy-ciphers=s proxy-crlfile=s
+        proxy-digest proxy-header=s@ proxy-insecure
+        proxy-key-type=s proxy-key proxy-negotiate proxy-ntlm proxy-pass=s
+        proxy-pinnedpubkey=s proxy-service-name=s proxy-ssl-allow-beast
+        proxy-tls13-ciphers=s proxy-tlsauthtype=s proxy-tlspassword=s
+        proxy-tlsuser=s proxy-tlsv1 proxy-user=s proxy=s
+        proxytunnel=s pubkey=s random-file=s referer=s resolve=s
+        retry-connrefused retry-delay=s retry-max-time=s retry=i
+        sasl-ir service-name=s socks4=s socks4a=s socks5-basic
+        socks5-gssapi-service-name=s socks5-gssapi socks5-hostname=s socks5=s
+        speed-limit speed-type ssl-allow-beast sslv2 sslv3
+        suppress-connect-headers tcp-fastopen tls-max=s
+        tls13-ciphers=s tlsauthtype=s tlspassword=s tlsuser=s
+        tlsv1 trace-ascii=s trace-time trace=s
+        unix-socket=s user-agent=s user=s
+)
+}
+
+1;