Patch from David Christensen to add support for fetching jacket images from Open...

Hi folks,

At a suggestion from the #OpenILS-Evergreen IRC channel, I'm putting this out there :-)

This is a patch to /openils/lib/perl5/OpenILS/WWW/AddedContent/Amazon.pm (it probably makes sense if it were to end up as OpenLibrary.pm, or some such) that enables getting book cover images from OpenLibrary (see http://openlibrary.org/dev/docs/api/covers for details on the OpenLibrary API).

A little comment section at the top shows the two changes that need to be made to opensrf.xml as well.

-David

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    of my knowledge, is covered under an appropriate open source
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Signed-off-by: David.A.Christensen@gmail.com
git-svn-id: svn://svn.open-ils.org/ILS/trunk@13435 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/src/perlmods/OpenILS/WWW/AddedContent/OpenLibrary.pm b/Open-ILS/src/perlmods/OpenILS/WWW/AddedContent/OpenLibrary.pm
new file mode 100644 (file)
index 0000000..e2f1b84
--- /dev/null
+++ b/Open-ILS/src/perlmods/OpenILS/WWW/AddedContent/OpenLibrary.pm
@@ -0,0 +1,82 @@
+package OpenILS::WWW::AddedContent::OpenLibrary;
+use strict; use warnings;
+use OpenSRF::Utils::Logger qw/$logger/;
+use OpenSRF::Utils::SettingsParser;
+use OpenILS::WWW::AddedContent;
+use OpenSRF::Utils::JSON;
+use OpenSRF::EX qw/:try/;
+use XML::LibXML;
+
+# Edit the <added_content> section of /openils/conf/opensrf.xml
+# Change <module> to:
+#   <module>OpenILS::WWW::AddedContent::OpenLibrary</module>
+# Change <base_url> to:
+#   <base_url>http://covers.openlibrary.org/b/isbn/</base_url>
+
+
+my $AC = 'OpenILS::WWW::AddedContent';
+
+sub new {
+    my( $class, $args ) = @_;
+    $class = ref $class || $class;
+    return bless($args, $class);
+}
+
+sub base_url {
+    my $self = shift;
+    return $self->{base_url};
+}
+
+sub userid {
+    my $self = shift;
+    return $self->{userid};
+}
+
+
+# --------------------------------------------------------------------------
+sub jacket_small {
+    my( $self, $key ) = @_;
+    return $self->send_img(
+        $self->fetch_response('-S.jpg', $key));
+}
+
+sub jacket_medium {
+    my( $self, $key ) = @_;
+    return $self->send_img(
+        $self->fetch_response('-M.jpg', $key));
+
+}
+sub jacket_large {
+    my( $self, $key ) = @_;
+    return $self->send_img(
+        $self->fetch_response('-L.jpg', $key));
+}
+
+# --------------------------------------------------------------------------
+
+sub send_img {
+    my($self, $response) = @_;
+    return { 
+        content_type => $response->header('Content-type'),
+        content => $response->content, 
+        binary => 1 
+    };
+}
+
+# returns the raw content returned from the URL fetch
+sub fetch_content {
+    my( $self, $page, $key ) = @_;
+    return $self->fetch_response($page, $key)->content;
+}
+
+# returns the HTTP response object from the URL fetch
+sub fetch_response {
+    my( $self, $page, $key ) = @_;
+    my $uname = $self->userid;
+    my $url = $self->base_url . "$key$page";
+    return $AC->get_url($url);
+}
+
+
+
+1;