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1 | package Promulger::List; |
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2 | use Moo; |
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3 | use autodie; |
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4 | |
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5 | use autodie ':all'; |
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6 | use Carp; |
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7 | use Path::Class; |
8 | use Fcntl ':flock'; |
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9 | use Tie::File; |
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10 | use File::Slurp qw/read_file write_file/; |
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11 | use Data::Dumper; |
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12 | use Try::Tiny; |
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13 | use FindBin qw($Bin); |
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14 | $Data::Dumper::Purity = 1; |
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15 | |
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16 | use Promulger::Config; |
17 | |
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18 | has listname => ( |
19 | is => 'ro', |
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20 | isa => sub { $_[0] =~ /^\w+$/ or die "listname must be a string" }, |
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21 | required => 1, |
22 | ); |
23 | |
24 | has active => ( |
25 | is => 'rw', |
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26 | isa => sub { ($_[0] == 0 || $_[0] == 1) or die "active must be 0 or 1" }, |
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27 | required => 1, |
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28 | default => sub { 1 }, |
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29 | ); |
30 | |
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31 | has subscribers => ( |
32 | is => 'rw', |
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33 | isa => sub { ref $_[0] eq 'HASH' or die "subscribers must be a hashref" }, |
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34 | required => 1, |
35 | default => sub { {} }, |
36 | ); |
37 | |
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38 | sub resolve { |
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39 | my ($self, $proto) = @_; |
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40 | $proto =~ s/-request$//; |
41 | my $path = find_path_for($proto); |
42 | my $maybe_list; |
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43 | try { |
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44 | $maybe_list = __PACKAGE__->load($path->stringify); |
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45 | } catch { |
46 | die "oh noes: $_"; |
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47 | }; |
48 | return $maybe_list; |
49 | } |
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50 | |
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51 | sub subscribe { |
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52 | my ($self, $new) = @_; |
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53 | return if $self->subscribers->{$new}; |
54 | $self->subscribers->{$new} = 1; |
55 | $self->store(find_path_for($self->listname)->stringify); |
56 | return 1; |
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57 | } |
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58 | |
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59 | sub unsubscribe { |
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60 | my ($self, $ex) = @_; |
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61 | return unless exists $self->subscribers->{$ex}; |
62 | delete $self->subscribers->{$ex}; |
63 | $self->store(find_path_for($self->listname)->stringify); |
64 | return 1; |
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65 | } |
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66 | |
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67 | # XXX implement ACLs and other shinies -- apeiron, 2010-03-13 |
68 | sub accept_posts_from { |
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69 | my ($self, $sender) = @_; |
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70 | return grep { $sender eq $_ } keys %{$self->subscribers}; |
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71 | } |
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72 | |
73 | sub setup { |
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74 | my ($self) = @_; |
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75 | my $config = Promulger::Config->config; |
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76 | my $name = $self->listname; |
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77 | croak "${name} already a known list" if $self->resolve($name); |
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78 | my $path = find_path_for($name); |
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79 | |
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80 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases} |
81 | or die "cannot tie " . $config->{aliases} . ": $!"; |
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82 | $tie->flock; |
83 | my @list_aliases = ($name, "${name}-request"); |
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84 | |
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85 | for my $list_alias (@list_aliases) { |
86 | if(grep { /^${list_alias}:/ } @aliases) { |
87 | croak "${list_alias} already in $config->{aliases}"; |
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88 | } |
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89 | push @aliases, |
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90 | qq(${list_alias}: "|$Bin msg -c $config->{config_file}"\n); |
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91 | } |
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92 | |
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93 | $self->store($path->stringify); |
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94 | } |
95 | |
96 | sub delete { |
97 | my ($self) = @_; |
98 | my $config = Promulger::Config->config; |
99 | my $name = $self->listname; |
100 | |
101 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases}; |
102 | $tie->flock; |
103 | |
104 | my @list_aliases = ($name, "${name}-request"); |
105 | @aliases = grep { |
106 | $_ !~ /^$list_aliases[0]:/ && |
107 | $_ !~ /^$list_aliases[1]:/ |
108 | } @aliases; |
109 | |
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110 | unlink find_path_for($self->listname)->stringify; |
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111 | } |
112 | |
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113 | sub find_path_for { |
114 | my ($proto) = @_; |
115 | my $path = file(Promulger::Config->config->{list_home}, $proto . ".list"); |
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116 | return $path; |
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117 | } |
118 | |
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119 | sub store { |
120 | my ($self, $path) = @_; |
121 | my $dumped = 'do { my '. Dumper($self) . '; $VAR1; }'; |
122 | write_file($path, $dumped); |
123 | } |
124 | |
125 | sub load { |
126 | my ($class, $path) = @_; |
127 | return do $path; |
128 | } |
129 | |
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130 | sub get_lists { |
131 | my ($self) = @_; |
132 | my $config = Promulger::Config->config; |
133 | my @lists = map { $_->basename} |
134 | grep { -f } dir($config->{list_home})->children; |
135 | s/\.list//g for @lists; |
136 | return @lists; |
137 | } |
138 | |
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139 | 'http://mitpress.mit.edu/sicp/'; |