- #!/usr/bin/perl
- package IkiWiki::Plugin::poll;
- use warnings;
- use strict;
- use IkiWiki;
- use URI;
- 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 $percent=yesno($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) {
- my $percent=$total > 0 ? int($choices{$choice} / $total * 100) : 0;
- if ($percent) {
- $ret.="$choice ($percent%) ";
- }
- else {
- $ret.="$choice ($choices{$choice}) ";
- }
- if ($open && exists $config{cgiurl}) {
- my $url=URI->new($config{cgiurl});
- $url->query_form(
- "do" => "poll",
- "num" => $pagenum{$params{page}},
- "page" => $params{page},
- "choice" => $choice,
- );
- $ret.="<a class=pollbutton href=\"$url\">vote</a>";
- }
- $ret.="<br />\n<hr class=poll align=left width=\"$percent%\"/>\n";
- }
- if ($showtotal) {
- $ret.="<span>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.($2-1)." \"$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",
- 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
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