1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
| | # Copyright (C) 2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# front-end for the "lei patch-to-query" sub-command
package PublicInbox::LeiP2q;
use strict;
use v5.10.1;
use parent qw(PublicInbox::IPC);
use PublicInbox::Eml;
use PublicInbox::Smsg;
use PublicInbox::MsgIter qw(msg_part_text);
use PublicInbox::Git qw(git_unquote);
use PublicInbox::Spawn qw(popen_rd);
use URI::Escape qw(uri_escape_utf8);
my $FN = qr!((?:"?[^/\n]+/[^\r\n]+)|/dev/null)!;
sub xphrase ($) {
my ($s) = @_;
return () unless $s =~ /\S/;
# cf. xapian-core/queryparser/queryparser.lemony
# [\./:\\\@] - is_phrase_generator (implicit phrase search)
# FIXME not really sure about these..., we basically want to
# extract the longest phrase possible that Xapian can handle
map {
s/\A\s*//;
s/\s+\z//;
m![^\./:\\\@\-\w]! ? qq("$_") : $_ ;
} ($s =~ m!(\w[\|=><,\./:\\\@\-\w\s]+)!g);
}
sub extract_terms { # eml->each_part callback
my ($p, $lei) = @_;
my $part = $p->[0]; # ignore $depth and @idx;
my $ct = $part->content_type || 'text/plain';
my ($s, undef) = msg_part_text($part, $ct);
defined $s or return;
my $in_diff;
# TODO: b: nq: q:
for (split(/\n/, $s)) {
if ($in_diff && s/^ //) { # diff context
push @{$lei->{qterms}->{dfctx}}, xphrase($_);
} elsif (/^-- $/) { # email signature begins
$in_diff = undef;
} elsif (m!^diff --git $FN $FN!) {
# wait until "---" and "+++" to capture filenames
$in_diff = 1;
} elsif (/^index ([a-f0-9]+)\.\.([a-f0-9]+)\b/) {
my ($oa, $ob) = ($1, $2);
push @{$lei->{qterms}->{dfpre}}, $oa;
push @{$lei->{qterms}->{dfpost}}, $ob;
# who uses dfblob?
} elsif (m!^(?:---|\+{3}) ($FN)!) {
next if $1 eq '/dev/null';
my $fn = (split(m!/!, git_unquote($1.''), 2))[1];
push @{$lei->{qterms}->{dfn}}, xphrase($fn);
} elsif ($in_diff && s/^\+//) { # diff added
push @{$lei->{qterms}->{dfb}}, xphrase($_);
} elsif ($in_diff && s/^-//) { # diff removed
push @{$lei->{qterms}->{dfa}}, xphrase($_);
} elsif (/^@@ (?:\S+) (?:\S+) @@\s*$/) {
# traditional diff w/o -p
} elsif (/^@@ (?:\S+) (?:\S+) @@\s*(\S+.*)/) {
push @{$lei->{qterms}->{dfhh}}, xphrase($1);
} elsif (/^(?:dis)similarity index/ ||
/^(?:old|new) mode/ ||
/^(?:deleted|new) file mode/ ||
/^(?:copy|rename) (?:from|to) / ||
/^(?:dis)?similarity index / ||
/^\\ No newline at end of file/ ||
/^Binary files .* differ/) {
} elsif ($_ eq '') {
# possible to be in diff context, some mail may be
# stripped by MUA or even GNU diff(1). "git apply"
# treats a bare "\n" as diff context, too
} else {
$in_diff = undef;
}
}
}
my %pfx2smsg = (
t => [ qw(to) ],
c => [ qw(cc) ],
f => [ qw(from) ],
tc => [ qw(to cc) ],
tcf => [ qw(to cc from) ],
a => [ qw(to cc from) ],
s => [ qw(subject) ],
bs => [ qw(subject) ], # body handled elsewhere
d => [ qw(ds) ], # nonsense?
dt => [ qw(ds) ], # ditto...
rt => [ qw(ts) ], # ditto...
);
sub do_p2q { # via wq_do
my ($self) = @_;
my $lei = $self->{lei};
my $want = $lei->{opt}->{want} // [ qw(dfpost7) ];
my @want = split(/[, ]+/, "@$want");
for (@want) {
/\A(?:(d|dt|rt):)?([0-9]+)(\.(?:day|weeks)s?)?\z/ or next;
my ($pfx, $n, $unit) = ($1, $2, $3);
$n *= 86400 * ($unit =~ /week/i ? 7 : 1);
$_ = [ $pfx, $n ];
}
my $smsg = bless {}, 'PublicInbox::Smsg';
my $in = $self->{0};
my @cmd;
unless ($in) {
my $input = $self->{input};
my $devfd = $lei->path_to_fd($input) // return;
if ($devfd >= 0) {
$in = $lei->{$devfd};
} elsif (-e $input) {
open($in, '<', $input) or
return $lei->fail("open < $input: $!");
} else {
@cmd = (qw(git format-patch --stdout -1), $input);
$in = popen_rd(\@cmd, undef, { 2 => $lei->{2} });
}
};
my $str = do { local $/; <$in> };
@cmd && !close($in) and return $lei->fail("E: @cmd failed: $?");
my $eml = PublicInbox::Eml->new(\$str);
$lei->{diff_want} = +{ map { $_ => 1 } @want };
$smsg->populate($eml);
while (my ($pfx, $fields) = each %pfx2smsg) {
next unless $lei->{diff_want}->{$pfx};
for my $f (@$fields) {
my $v = $smsg->{$f} // next;
push @{$lei->{qterms}->{$pfx}}, xphrase($v);
}
}
$eml->each_part(\&extract_terms, $lei, 1);
if ($lei->{opt}->{debug}) {
my $json = ref(PublicInbox::Config->json)->new;
$json->utf8->canonical->pretty;
print { $lei->{2} } $json->encode($lei->{qterms});
}
my (@q, %seen);
for my $pfx (@want) {
if (ref($pfx) eq 'ARRAY') {
my ($p, $t_range) = @$pfx; # TODO
} elsif ($pfx =~ m!\A(?:OR|XOR|AND|NOT)\z! ||
$pfx =~ m!\A(?:ADJ|NEAR)(?:/[0-9]+)?\z!) {
push @q, $pfx;
} else {
my $plusminus = ($pfx =~ s/\A([\+\-])//) ? $1 : '';
my $end = ($pfx =~ s/([0-9\*]+)\z//) ? $1 : '';
my $x = delete($lei->{qterms}->{$pfx}) or next;
my $star = $end =~ tr/*//d ? '*' : '';
my $min_len = ($end || 0) + 0;
# no wildcards for bool_pfx_external
$star = '' if $pfx =~ /\A(dfpre|dfpost|mid)\z/;
$pfx = "$plusminus$pfx:";
if ($min_len) {
push @q, map {
my @t = ($pfx.$_.$star);
while (length > $min_len) {
chop $_;
push @t, 'OR', $pfx.$_.$star;
}
@t;
} @$x;
} else {
push @q, map {
my $k = $pfx.$_.$star;
$seen{$k}++ ? () : $k
} @$x;
}
}
}
if ($lei->{opt}->{uri}) {
@q = (join('+', map { uri_escape_utf8($_) } @q));
} else {
@q = (join(' ', @q));
}
$lei->out(@q, "\n");
}
sub lei_p2q { # the "lei patch-to-query" entry point
my ($lei, $input) = @_;
my $self = bless {}, __PACKAGE__;
if ($lei->{opt}->{stdin}) {
$self->{0} = delete $lei->{0}; # guard from _lei_atfork_child
} else {
$self->{input} = $input;
}
my ($op_c, $ops) = $lei->workers_start($self, 1);
$lei->{wq1} = $self;
$self->wq_io_do('do_p2q', []);
$self->wq_close;
$lei->wait_wq_events($op_c, $ops);
}
sub ipc_atfork_child {
my ($self) = @_;
$self->{lei}->_lei_atfork_child;
$self->SUPER::ipc_atfork_child;
}
1;
|