config: move try_cat function from inbox

This allows RepoConfig to be independent of the
PublicInbox::Inbox class.

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index f6275cdd..f2c40b13 100644
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -167,4 +167,14 @@ sub _fill {
         $self->{-by_name}->{$name} = $rv;
 }
 
+sub try_cat {
+        my ($path) = @_;
+        my $rv = '';
+        if (open(my $fh, '<', $path)) {
+                local $/;
+                $rv = <$fh>;
+        }
+        $rv;
+}
+
 1;