git-remote-mediawiki: refactor loop over revision ids

Without changing the behavior, we turn the foreach loop on an array of
revisions into a loop on an array of integer. It will be easier to
implement other strategies as they will only need to produce an array of
integer instead of a more complex data-structure.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/mw-to-git/git-remote-mediawiki

@@ -819,30 +819,35 @@ sub mw_import_ref {
 	# Creation of the fast-import stream
 	print STDERR "Fetching & writing export data...\n";
 
+	@revisions = sort {$a->{revid} <=> $b->{revid}} @revisions;
+	my @revision_ids = map $_->{revid}, @revisions;
+
 	$n = 0;
 	my $last_timestamp = 0; # Placeholer in case $rev->timestamp is undefined
 
-	foreach my $pagerevid (sort {$a->{revid} <=> $b->{revid}} @revisions) {
+	foreach my $pagerevid (@revision_ids) {
 		# fetch the content of the pages
 		my $query = {
 			action => 'query',
 			prop => 'revisions',
 			rvprop => 'content|timestamp|comment|user|ids',
-			revids => $pagerevid->{revid},
+			revids => $pagerevid,
 		};
 
 		my $result = $mediawiki->api($query);
 
-		my $rev = pop(@{$result->{query}->{pages}->{$pagerevid->{pageid}}->{revisions}});
+		my @result_pages = values(%{$result->{query}->{pages}});
+		my $result_page = $result_pages[0];
+		my $rev = $result_pages[0]->{revisions}->[0];
 
 		$n++;
 
-		my $page_title = $result->{query}->{pages}->{$pagerevid->{pageid}}->{title};
+		my $page_title = $result_page->{title};
 		my %commit;
 		$commit{author} = $rev->{user} || 'Anonymous';
 		$commit{comment} = $rev->{comment} || '*Empty MediaWiki Message*';
 		$commit{title} = mediawiki_smudge_filename($page_title);
-		$commit{mw_revision} = $pagerevid->{revid};
+		$commit{mw_revision} = $rev->{revid};
 		$commit{content} = mediawiki_smudge($rev->{'*'});
 
 		if (!defined($rev->{timestamp})) {
@@ -861,7 +866,7 @@ sub mw_import_ref {
 		# If this is a revision of the media page for new version
 		# of a file do one common commit for both file and media page.
 		# Else do commit only for that page.
-		print STDERR "$n/", scalar(@revisions), ": Revision #$pagerevid->{revid} of $commit{title}\n";
+		print STDERR "$n/", scalar(@revision_ids), ": Revision #$rev->{revid} of $commit{title}\n";
 		import_file_revision(\%commit, ($fetch_from == 1), $n, \%mediafile);
 	}