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
|
#!/usr/bin/perl
package IkiWiki::Plugin::poll;
use warnings;
use strict;
use IkiWiki;
sub import { #{{{
hook(type => "preprocess", id => "poll", call => \&preprocess);
hook(type => "cgi", id => "poll", call => \&cgi);
} # }}}
sub yesno ($) { #{{{
my $val=shift;
return (defined $val && lc($val) eq "yes");
} #}}}
my %pagenum;
sub preprocess (@) { #{{{
my %params=(open => "yes", total => "yes", percent => "yes", @_);
my $open=yesno($params{open});
my $showtotal=yesno($params{total});
my $showpercent=yesno($params{percent});
$pagenum{$params{page}}++;
my %choices;
my @choices;
my $total=0;
while (@_) {
my $key=shift;
my $value=shift;
next unless $key =~ /^\d+/;
my $num=$key;
$key=shift;
$value=shift;
$choices{$key}=$num;
push @choices, $key;
$total+=$num;
}
my $ret="";
foreach my $choice (@choices) {
if ($open && exists $config{cgiurl}) {
# use POST to avoid robots
$ret.="<form method=\"POST\" action=\"$config{cgiurl}\">\n";
}
my $percent=$total > 0 ? int($choices{$choice} / $total * 100) : 0;
$ret.="<p>\n";
if ($showpercent) {
$ret.="$choice ($percent%)\n";
}
else {
$ret.="$choice ($choices{$choice})\n";
}
if ($open && exists $config{cgiurl}) {
$ret.="<input type=\"hidden\" name=\"do\" value=\"poll\" />\n";
$ret.="<input type=\"hidden\" name=\"num\" value=\"$pagenum{$params{page}}\" />\n";
$ret.="<input type=\"hidden\" name=\"page\" value=\"$params{page}\" />\n";
$ret.="<input type=\"hidden\" name=\"choice\" value=\"$choice\" />\n";
$ret.="<input type=\"submit\" value=\"".gettext("vote")."\" />\n";
}
$ret.="</p>\n<hr class=poll align=left width=\"$percent%\"/>\n";
if ($open && exists $config{cgiurl}) {
$ret.="</form>\n";
}
}
if ($showtotal) {
$ret.="<span>".gettext("Total votes:")." $total</span>\n";
}
return "<div class=poll>$ret</div>";
} # }}}
sub cgi ($) { #{{{
my $cgi=shift;
if (defined $cgi->param('do') && $cgi->param('do') eq "poll") {
my $choice=$cgi->param('choice');
if (! defined $choice) {
error("no choice specified");
}
my $num=$cgi->param('num');
if (! defined $num) {
error("no num specified");
}
my $page=IkiWiki::possibly_foolish_untaint($cgi->param('page'));
if (! defined $page || ! exists $pagesources{$page}) {
error("bad page name");
}
# Did they vote before? If so, let them change their vote,
# and check for dups.
my $session=IkiWiki::cgi_getsession();
my $choice_param="poll_choice_${page}_$num";
my $oldchoice=$session->param($choice_param);
if (defined $oldchoice && $oldchoice eq $choice) {
# Same vote; no-op.
IkiWiki::redirect($cgi, "$config{url}/".htmlpage($page));
exit;
}
my $content=readfile(srcfile($pagesources{$page}));
# Now parse the content, find the right poll,
# and find the choice within it, and increment its number.
# If they voted before, decrement that one.
my $edit=sub {
my $escape=shift;
my $params=shift;
return "\\[[poll $params]]" if $escape;
if (--$num == 0) {
$params=~s/(^|\s+)(\d+)\s+"?\Q$choice\E"?(\s+|$)/$1.($2+1)." \"$choice\"".$3/se;
if (defined $oldchoice) {
$params=~s/(^|\s+)(\d+)\s+"?\Q$oldchoice\E"?(\s+|$)/$1.($2-1 >=0 ? $2-1 : 0)." \"$oldchoice\"".$3/se;
}
}
return "[[poll $params]]";
};
$content =~ s{(\\?)\[\[poll\s+([^]]+)\s*\]\]}{$edit->($1, $2)}seg;
# Store their vote, update the page, and redirect to it.
writefile($pagesources{$page}, $config{srcdir}, $content);
$session->param($choice_param, $choice);
IkiWiki::cgi_savesession($session);
$oldchoice=$session->param($choice_param);
if ($config{rcs}) {
# prevent deadlock with post-commit hook
IkiWiki::unlockwiki();
IkiWiki::rcs_commit($pagesources{$page}, "poll vote ($choice)",
IkiWiki::rcs_prepedit($pagesources{$page}),
$session->param("name"), $ENV{REMOTE_ADDR});
}
else {
require IkiWiki::Render;
IkiWiki::refresh();
IkiWiki::saveindex();
}
# Need to set cookie in same http response that does the
# redir.
eval q{use CGI::Cookie};
error($@) if $@;
my $cookie = CGI::Cookie->new(-name=> $session->name, -value=> $session->id);
print $cgi->redirect(-cookie => $cookie,
-url => "$config{url}/".htmlpage($page));
exit;
}
} #}}}
1
|