Jakub Narebski <jnareb@xxxxxxxxx> writes:
> On Tue, 17 July 2007, Matt McCutchen napisał:
> ...
>> Alert for gitweb site administrators: This patch changes the format of
>> $feature{'snapshot'}{'default'} in gitweb_config.perl from a list of
>> three pieces of information about a single format to a list of one or
>> more formats you wish to offer from the set ('tgz', 'tbz2', 'zip').
>> Update your gitweb_config.perl appropriately. The preferred names for
>> gitweb.snapshot in repository configuration have also changed from
>> 'gzip' and 'bzip2' to 'tgz' and 'tbz2', but the old names are still
>> recognized for compatibility.
>
> This alert/warning should probably be put in RelNotes for when it would
> be in git.git
Does anybody else worry about the backward imcompatibility, I
wonder... List?
I really hate to having to say something like that in the
RelNotes. I do not think this is a good enough reason to break
existing configurations; I would not want to be defending that
change.
>> I thought of another incompatibility: previously bookmarked snapshot
>> URLs will no longer work because they lack the new "sf" parameter. I
>> don't care about this; do any of you?
>
> I think either having good error message, or using first format avaiable
> would be good enough.
I doubt bookmarked snapshot URL would make sense to begin with,
so this would be Ok.
I am wondering if something like this patch (totally untested,
mind you) to convert the old style %feature in configuration at
the site at runtime would be sufficient.
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index f17c983..cdec4d0 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -236,9 +236,39 @@ our %feature = (
'default' => [0]},
);
+# Functions to convert values from older gitweb configuration
+# into the current data format
+sub gitweb_bc_feature_snapshot {
+ my $def = $feature{'snapshot'}{'default'};
+ # Older definition was to have either undef (to disable), or
+ # a three-element array whose first element was content encoding
+ # without leading "application/".
+ return if (ref $def ne 'ARRAY');
+ if (!defined $def->[0] && @$def == 1) {
+ # Disabled -- the new way to spell it is to have an empty
+ # arrayref.
+ $feature{'snapshot'}{'default'} = [];
+ return;
+ }
+ return if (@$def != 3);
+ for ($def->[0]) {
+ if (/x-gzip/) {
+ $feature{'snapshot'}{'default'} = ['tgz'];
+ }
+ if (/x-bz2/) {
+ $feature{'snapshot'}{'default'} = ['tbz2'];
+ }
+ if (/x-zip/) {
+ $feature{'snapshot'}{'default'} = ['zip'];
+ }
+ }
+}
+
sub gitweb_check_feature {
my ($name) = @_;
return unless exists $feature{$name};
+ eval "gitweb_bc_feature_$name()";
+
my ($sub, $override, @defaults) = (
$feature{$name}{'sub'},
$feature{$name}{'override'},
-
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