Prevent uninitialized var warnings in OpenILS::WWW::SuperCat::unapi

Given a tag URI like tag:localhost,2011:biblio-record_entry/1 with
no format, Evergreen was throwing uninitialized variable warnings
and attempting to invoke "open-ils.supercat..formats" due to the
unitialized $type variable, which resulted in an Apache error.

On the TT OPAC, this enables Zotero to successfully offer import
of all entries on the search results page. On the AjaxPAC, it seems
that Zotero parses the page before the unAPI hrefs have been supplied
by JavaScript.

Signed-off-by: Dan Scott <dan@coffeecode.net>
git-svn-id: svn://svn.open-ils.org/ILS/trunk@20390 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/src/perlmods/lib/OpenILS/WWW/SuperCat.pm b/Open-ILS/src/perlmods/lib/OpenILS/WWW/SuperCat.pm
index 5287171..d3a6ae8 100644 (file)
--- a/Open-ILS/src/perlmods/lib/OpenILS/WWW/SuperCat.pm
+++ b/Open-ILS/src/perlmods/lib/OpenILS/WWW/SuperCat.pm
@@ -281,7 +281,7 @@ Otherwise, we won't return any holdings.
 =cut
 
 sub parse_feed_type {
-    my $type = shift;
+    my $type = shift || '';
 
      if ($type =~ /-full$/o) {
         return 1;
@@ -412,21 +412,22 @@ sub unapi {
     # Enable localized results of copy status, etc
     $supercat->session_locale($locale);
 
-    my $format = $cgi->param('format');
+    my $format = $cgi->param('format') || '';
     my $flesh_feed = parse_feed_type($format);
     (my $base_format = $format) =~ s/(-full|-uris)$//o;
-    my ($id,$type,$command,$lib,$depth,$paging) = ('','','');
+    my ($id,$type,$command,$lib,$depth,$paging) = ('','record','');
+    my $body = "Content-type: application/xml; charset=utf-8\n\n";
+
+    if ($uri =~ m{^tag:[^:]+:([^\/]+)/([^\/[]+)(?:\[([0-9,]+)\])?(?:/(.+))?}o) {
+        $id = $2;
+        $paging = $3;
+        ($lib,$depth) = split('/', $4);
+        $type = 'metarecord' if ($1 =~ /^m/o);
+        $type = 'authority' if ($1 =~ /^authority/o);
+    }
 
     if (!$format) {
-        my $body = "Content-type: application/xml; charset=utf-8\n\n";
-    
         if ($uri =~ m{^tag:[^:]+:([^\/]+)/([^\/[]+)(?:\[([0-9,]+)\])?(?:/(.+))?}o) {
-            $id = $2;
-            $paging = $3;
-            ($lib,$depth) = split('/', $4);
-            $type = 'record';
-            $type = 'metarecord' if ($1 =~ /^m/o);
-            $type = 'authority' if ($1 =~ /^authority/o);
 
             my $list = $supercat
                 ->request("open-ils.supercat.$type.formats")