#!/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 $showpercent=yesno($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) { my $percent=$total > 0 ? int($choices{$choice} / $total * 100) : 0; if ($showpercent) { $ret.="$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.="vote"; } $ret.="
\n
\n"; } if ($showtotal) { $ret.="Total votes: $total\n"; } return "
$ret
"; } # }}} sub cgi ($) { #{{{ 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", 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