init from upstream IkiWiki

diff --git a/poll.pm b/poll.pm
new file mode 100644 (file)
index 0000000..3bd4af2
--- /dev/null
+++ b/poll.pm
@@ -0,0 +1,183 @@
+#!/usr/bin/perl
+package IkiWiki::Plugin::poll;
+
+use warnings;
+use strict;
+use IkiWiki 3.00;
+use Encode;
+
+sub import {
+       hook(type => "getsetup", id => "poll", call => \&getsetup);
+       hook(type => "preprocess", id => "poll", call => \&preprocess);
+       hook(type => "sessioncgi", id => "poll", call => \&sessioncgi);
+}
+
+sub getsetup () {
+       return 
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+                       section => "widget",
+               },
+}
+
+my %pagenum;
+sub preprocess (@) {
+       my %params=(open => "yes", total => "yes", percent => "yes",
+               expandable => "no", @_);
+
+       my $open=IkiWiki::yesno($params{open});
+       my $showtotal=IkiWiki::yesno($params{total});
+       my $showpercent=IkiWiki::yesno($params{percent});
+       my $expandable=IkiWiki::yesno($params{expandable});
+       my $num=++$pagenum{$params{page}}{$params{destpage}};
+
+       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=\"".IkiWiki::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";
+                       $ret.="<input type=\"hidden\" name=\"num\" value=\"$num\" />\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}) {
+                       $ret.="</form>\n";
+               }
+       }
+       
+       if ($expandable && $open && exists $config{cgiurl}) {
+               $ret.="<p>\n";
+               $ret.="<form method=\"POST\" action=\"".IkiWiki::cgiurl()."\">\n";
+               $ret.="<input type=\"hidden\" name=\"do\" value=\"poll\" />\n";
+               $ret.="<input type=\"hidden\" name=\"num\" value=\"$num\" />\n";
+               $ret.="<input type=\"hidden\" name=\"page\" value=\"$params{page}\" />\n";
+               $ret.=gettext("Write in").": <input name=\"choice\" size=50 />\n";
+               $ret.="<input type=\"submit\" value=\"".gettext("vote")."\" />\n";
+               $ret.="</form>\n";
+               $ret.="</p>\n";
+       }
+
+       if ($showtotal) {
+               $ret.="<span>".gettext("Total votes:")." $total</span>\n";
+       }
+       return "<div class=poll>$ret</div>";
+}
+
+sub sessioncgi ($$) {
+       my $cgi=shift;
+       my $session=shift;
+       if (defined $cgi->param('do') && $cgi->param('do') eq "poll") {
+               my $choice=decode_utf8($cgi->param('choice'));
+               if (! defined $choice || not length $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 $choice_param="poll_choice_${page}_$num";
+               my $oldchoice=$session->param($choice_param);
+               if (defined $oldchoice && $oldchoice eq $choice) {
+                       # Same vote; no-op.
+                       IkiWiki::redirect($cgi, urlto($page));
+                       exit;
+               }
+
+               my $prefix=$config{prefix_directives} ? "!poll" : "poll";
+
+               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 $params=shift;
+                       return "\\[[$prefix $params]]" if $escape;
+                       if (--$num == 0) {
+                               if ($params=~s/(^|\s+)(\d+)\s+"?\Q$choice\E"?(\s+|$)/$1.($2+1)." \"$choice\"".$3/se) {
+                               }
+                               elsif ($params=~/expandable=(\w+)/
+                                   & &IkiWiki::yesno($1)) {
+                                       $choice=~s/["\]\n\r]//g;
+                                       $params.=" 1 \"$choice\""
+                                               if length $choice;
+                               }
+                               if (defined $oldchoice) {
+                                       $params=~s/(^|\s+)(\d+)\s+"?\Q$oldchoice\E"?(\s+|$)/$1.($2-1 >=0 ? $2-1 : 0)." \"$oldchoice\"".$3/se;
+                               }
+                       }
+                       return "[[$prefix $params]]";
+               };
+               $content =~ s{(\\?)\[\[\Q$prefix\E\s+([^]]+)\s*\]\]}{$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}) {
+                       IkiWiki::disable_commit_hook();
+                       IkiWiki::rcs_commit(
+                               file => $pagesources{$page},
+                               message => "poll vote ($choice)",
+                               token => IkiWiki::rcs_prepedit($pagesources{$page}),
+                               session => $session,
+                       );
+                       IkiWiki::enable_commit_hook();
+                       IkiWiki::rcs_update();
+               }
+               require IkiWiki::Render;
+               IkiWiki::refresh();
+               IkiWiki::saveindex();
+
+               # Need to set cookie in same http response that does the
+               # redir.
+               eval q{use CGI::Cookie};
+               error($@) if $@;
+               my $cookie = CGI::Cookie->new(-name=> $session->name, -value=> $session->id);
+               print $cgi->redirect(-cookie => $cookie,
+                       -url => urlto($page));
+               exit;
+       }
+}
+
+1