po: make the "backlinks involve dependencies" feature optional

[git.ikiwiki.info.git] / IkiWiki / Plugin / editpage.pm

diff --git a/IkiWiki/Plugin/editpage.pm b/IkiWiki/Plugin/editpage.pm
index 9210d6ff8c7a61eeac6e3162e89cc9b92d09847b..480e82804a3beb599df3969d788508dd550bccb6 100644 (file)
--- a/IkiWiki/Plugin/editpage.pm
+++ b/IkiWiki/Plugin/editpage.pm
@@ -78,7 +78,44 @@ sub check_canedit ($$$;$) {
                        }
                }
        });
-       return $canedit;
+       return defined $canedit ? $canedit : 1;
+}
+
+sub check_content (@) {
+       my %params=@_;
+       
+       return 1 if ! exists $hooks{checkcontent}; # optimisation
+
+       if (exists $pagesources{$params{page}}) {
+               my @diff;
+               my %old=map { $_ => 1 }
+                       split("\n", readfile(srcfile($pagesources{$params{page}})));
+               foreach my $line (split("\n", $params{content})) {
+                       push @diff, $line if ! exists $old{$_};
+               }
+               $params{diff}=join("\n", @diff);
+       }
+
+       my $ok;
+       run_hooks(checkcontent => sub {
+               return if defined $ok;
+               my $ret=shift->(%params);
+               if (defined $ret) {
+                       if ($ret eq "") {
+                               $ok=1;
+                       }
+                       elsif (ref $ret eq 'CODE') {
+                               $ret->() unless $params{nonfatal};
+                               $ok=0;
+                       }
+                       elsif (defined $ret) {
+                               error($ret) unless $params{nonfatal};
+                               $ok=0;
+                       }
+               }
+
+       });
+       return defined $ok ? $ok : 1;
 }
 
 sub cgi_editpage ($$) {
@@ -105,7 +142,6 @@ sub cgi_editpage ($$) {
                header => 0,
                table => 0,
                template => scalar template_params("editpage.tmpl"),
-               wikiname => $config{wikiname},
        );
        
        decode_form_utf8($form);
@@ -369,8 +405,17 @@ sub cgi_editpage ($$) {
                        showform($form, \@buttons, $session, $q, forcebaseurl => $baseurl);
                        exit;
                }
+                       
+               my $message="";
+               if (defined $form->field('comments') &&
+                   length $form->field('comments')) {
+                       $message=$form->field('comments');
+               }
                
                my $content=$form->field('editcontent');
+               check_content(content => $content, page => $page,
+                       cgi => $q, session => $session,
+                       subject => $message);
                run_hooks(editcontent => sub {
                        $content=shift->(
                                content => $content,
@@ -404,12 +449,6 @@ sub cgi_editpage ($$) {
                
                my $conflict;
                if ($config{rcs}) {
-                       my $message="";
-                       if (defined $form->field('comments') &&
-                           length $form->field('comments')) {
-                               $message=$form->field('comments');
-                       }
-                       
                        if (! $exists) {
                                rcs_add($file);
                        }