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-rw-r--r--IkiWiki/Plugin/comments.pm32
-rw-r--r--debian/changelog3
-rw-r--r--doc/todo/conflict_free_comment_merges.mdwn9
3 files changed, 36 insertions, 8 deletions
diff --git a/IkiWiki/Plugin/comments.pm b/IkiWiki/Plugin/comments.pm
index 517e16f9f..6340fc2cb 100644
--- a/IkiWiki/Plugin/comments.pm
+++ b/IkiWiki/Plugin/comments.pm
@@ -377,8 +377,6 @@ sub editcomment ($$) {
IkiWiki::check_canedit($page, $cgi, $session);
$postcomment=0;
- my $location=unique_comment_location($page, $config{srcdir});
-
my $content = "[[!comment format=$type\n";
# FIXME: handling of double quotes probably wrong?
@@ -410,8 +408,11 @@ sub editcomment ($$) {
my $subject = $form->field('subject');
if (defined $subject && length $subject) {
$subject =~ s/"/"/g;
- $content .= " subject=\"$subject\"\n";
}
+ else {
+ $subject = "comment ".(num_comments($page, $config{srcdir}) + 1);
+ }
+ $content .= " subject=\"$subject\"\n";
$content .= " date=\"" . decode_utf8(strftime('%Y-%m-%dT%H:%M:%SZ', gmtime)) . "\"\n";
@@ -421,6 +422,8 @@ sub editcomment ($$) {
$editcontent =~ s/"/\\"/g;
$content .= " content=\"\"\"\n$editcontent\n\"\"\"]]\n";
+ my $location=unique_comment_location($page, $content, $config{srcdir});
+
# This is essentially a simplified version of editpage:
# - the user does not control the page that's created, only the parent
# - it's always a create operation, never an edit
@@ -458,7 +461,7 @@ sub editcomment ($$) {
if (! $ok) {
my $penddir=$config{wikistatedir}."/comments_pending";
- $location=unique_comment_location($page, $penddir);
+ $location=unique_comment_location($page, $content, $penddir);
writefile("$location._comment", $penddir, $content);
IkiWiki::printheader($session);
print IkiWiki::misctemplate(gettext(gettext("comment stored for moderation")),
@@ -554,7 +557,7 @@ sub commentmoderation ($$) {
if ($action eq 'Accept') {
my $content=eval { readfile($file) };
next if $@; # file vanished since form was displayed
- my $dest=unique_comment_location($page, $config{srcdir})."._comment";
+ my $dest=unique_comment_location($page, $content, $config{srcdir})."._comment";
writefile($dest, $config{srcdir}, $content);
if ($config{rcs} and $config{comments_commit}) {
IkiWiki::rcs_add($dest);
@@ -813,15 +816,28 @@ sub pagetemplate (@) {
}
}
-sub unique_comment_location ($) {
+sub num_comments ($$) {
my $page=shift;
my $dir=shift;
+ my @comments=glob("$dir/$page/$config{comments_pagename}*._comment");
+ return @comments;
+}
+
+sub unique_comment_location ($$$) {
+ my $page=shift;
+
+ eval q{use Digest::MD5 'md5_hex'};
+ error($@) if $@;
+ my $content_md5=md5_hex(shift);
+
+ my $dir=shift;
+
my $location;
- my $i = 0;
+ my $i = num_comments($page, $dir);
do {
$i++;
- $location = "$page/$config{comments_pagename}$i";
+ $location = "$page/$config{comments_pagename}${i}_${content_md5}";
} while (-e "$dir/$location._comment");
return $location;
diff --git a/debian/changelog b/debian/changelog
index ee6f9adfb..984351415 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -8,6 +8,9 @@ ikiwiki (3.20091219) UNRELEASED; urgency=low
can be generated at any time using ikiwiki --dumpsetup so I do
not see a reason to ship it. Closes: #562183
* Use env hack in python scripts.
+ * comments: Add a checksum to the name of comment pages, to
+ avoid merge conflicts when comments are posted to two branches of a
+ site.
-- Joey Hess <joeyh@debian.org> Fri, 25 Dec 2009 14:31:22 -0500
diff --git a/doc/todo/conflict_free_comment_merges.mdwn b/doc/todo/conflict_free_comment_merges.mdwn
index e0e8acb34..2cef0ee8c 100644
--- a/doc/todo/conflict_free_comment_merges.mdwn
+++ b/doc/todo/conflict_free_comment_merges.mdwn
@@ -12,3 +12,12 @@ title is specified, to retain the current behavior of the default title
being "comment N".
What do you think [[smcv]]? --[[Joey]]
+
+> I had to use md5sums, as sha1sum perl module may not be available and I
+> didn't want to drag it in. But I think that's ok; this doesn't need to be
+> cryptographically secure and even the chances of being able to
+> purposefully cause a md5 collision and thus an undesired merge conflict
+> are quite low since it modifies the input text and adds a date stamp to
+> it.
+>
+> Anyway, I think it's good, [[[done]] --[[Joey]]