# Copyright (C) 2016-2018 all contributors
# License: AGPL-3.0+
# Used for giving serial numbers to messages. This can be tied to
# the msgmap for live updates to living lists (see
# PublicInbox::Filters::RubyLang), or kept separate for imports
# of defunct NNTP groups (e.g. scripts/xhdr-num2mid)
#
# Introducing NEW uses of serial numbers is discouraged because of
# it leads to reliance on centralization. However, being able
# to use existing serial numbers is beneficial.
package PublicInbox::AltId;
use strict;
use warnings;
use URI::Escape qw(uri_unescape);
# spec: TYPE:PREFIX:param1=value1¶m2=value2&...
# The PREFIX will be a searchable boolean prefix in Xapian
# Example: serial:gmane:file=/path/to/altmsgmap.sqlite3
sub new {
my ($class, $ibx, $spec, $writable) = @_;
my ($type, $prefix, $query) = split(/:/, $spec, 3);
$type eq 'serial' or die "non-serial not supported, yet\n";
require PublicInbox::Msgmap;
my %params = map {
my ($k, $v) = split(/=/, uri_unescape($_), 2);
$v = '' unless defined $v;
($k, $v);
} split(/[&;]/, $query);
my $f = $params{file} or die "file: required for $type spec $spec\n";
unless (index($f, '/') == 0) {
if (($ibx->{version} || 1) == 1) {
$f = "$ibx->{mainrepo}/public-inbox/$f";
} else {
$f = "$ibx->{mainrepo}/$f";
}
}
bless {
filename => $f,
writable => $writable,
xprefix => 'X'.uc($prefix),
}, $class;
}
sub mm_alt {
my ($self) = @_;
$self->{mm_alt} ||= eval {
my $f = $self->{filename};
my $writable = $self->{writable};
PublicInbox::Msgmap->new_file($f, $writable);
};
}
sub mid2alt {
my ($self, $mid) = @_;
$self->mm_alt->num_for($mid);
}
1;