3 # Copyright 2008-2009 LibLime
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
24 unapi - implement unAPI for the OPAC
28 Retrieve http://library.example.org/cgi-bin/koha/unapi?id=koha:biblionumber:123&format=oai_dc
32 Implements unAPI <http://unapi.info>, a small HTTP API for retrieving structured
33 content from a web application. The primary application of unAPI in Koha is to
34 allow tools such as Zotero to identify and grab bibliographic record metadata in
35 an XML format such as OAI DC, RSS2, MARCXML, or MODS.
45 binmode(STDOUT, ":encoding(UTF-8)"); #output as utf8
49 =head2 $format_to_stylesheet_map
51 This hashref of hashrefs maps from a MARC flavour and unAPI format
52 to the stylesheet that should be used to transform the bib MARCXML
53 to the desired output format. As new MARC XSLT stylesheets are added,
54 (particularly for UNIMARC), this map should be updated. Of course,
55 if/when we add support for emitting a format that is not genreated
56 by a stylesheet, the structure of this variable will have to be changed.
57 At present, this doubles as the list of output formats supported by
58 this unAPI implementation.
62 my $format_to_stylesheet_map = {
64 'marcxml' => 'identity.xsl',
65 'marcxml-full' => 'identity.xsl',
66 'mods' => 'MARC21slim2MODS.xsl',
67 'mods-full' => 'MARC21slim2MODS.xsl',
68 'mods3' => 'MARC21slim2MODS3-1.xsl',
69 'mods3-full' => 'MARC21slim2MODS3-1.xsl',
70 'oai_dc' => 'MARC21slim2OAIDC.xsl',
71 'rdfdc', => 'MARC21slim2RDFDC.xsl',
72 'rss2' => 'MARC21slim2RSS2.xsl',
73 'rss2-full' => 'MARC21slim2RSS2.xsl',
74 'srw_dc' => 'MARC21slim2SRWDC.xsl',
77 'marcxml' => 'identity.xsl',
78 'marcxml-full' => 'identity.xsl',
79 'mods' => 'MARC21slim2MODS.xsl',
80 'mods-full' => 'MARC21slim2MODS.xsl',
81 'mods3' => 'MARC21slim2MODS3-1.xsl',
82 'mods3-full' => 'MARC21slim2MODS3-1.xsl',
83 'oai_dc' => 'MARC21slim2OAIDC.xsl',
84 'rdfdc', => 'MARC21slim2RDFDC.xsl',
85 'rss2' => 'MARC21slim2RSS2.xsl',
86 'rss2-full' => 'MARC21slim2RSS2.xsl',
87 'srw_dc' => 'MARC21slim2SRWDC.xsl',
90 'marcxml' => 'identity.xsl',
91 'marcxml-full' => 'identity.xsl',
92 'oai_dc' => 'UNIMARCslim2OAIDC.xsl',
93 'rdfdc', => 'UNIMARCslim2RDFDC.xsl',
94 'srw_dc' => 'UNIMARCslim2SRWDC.xsl',
100 This hashref maps from unAPI output formats to the <format> elements
101 used to describe them in an unAPI format request.
106 'marcxml' => q(<format name="marcxml" type="application/xml" namespace_uri="http://www.loc.gov/MARC21/slim" docs="http://www.loc.gov/marcxml/" schema_location="http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd"/>),
107 'marcxml-full' => q(<format name="marcxml-full" type="application/xml" namespace_uri="http://www.loc.gov/MARC21/slim" docs="http://www.loc.gov/marcxml/" schema_location="http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd"/>),
108 'mods' => q(<format name="mods" type="application/xml" namespace_uri="http://www.loc.gov/mods/" docs="http://www.loc.gov/mods/" schema_location="http://www.loc.gov/standards/mods/mods.xsd"/>),
109 'mods-full' => q(<format name="mods-full" type="application/xml" namespace_uri="http://www.loc.gov/mods/" docs="http://www.loc.gov/mods/" schema_location="http://www.loc.gov/standards/mods/mods.xsd"/>),
110 'mods3' => q(<format name="mods3" type="application/xml" namespace_uri="http://www.loc.gov/mods/v3" docs="http://www.loc.gov/mods/" schema_location="http://www.loc.gov/standards/mods/v3/mods-3-1.xsd"/>),
111 'mods3-full' => q(<format name="mods3-full" type="application/xml" namespace_uri="http://www.loc.gov/mods/v3" docs="http://www.loc.gov/mods/" schema_location="http://www.loc.gov/standards/mods/v3/mods-3-1.xsd"/>),
112 'oai_dc' => q(<format name="oai_dc" type="application/xml" namespace_uri="http://www.openarchives.org/OAI/2.0/oai_dc/" schema_location="http://www.openarchives.org/OAI/2.0/oai_dc.xsd"/>),
113 'rdfdc' => q(<format name="rdfdc" type="application/xml" namespace_uri="http://purl.org/dc/elements/1.1/" schema_location="http://purl.org/dc/elements/1.1/"/>),
114 'rss2' => q(<format name="rss2" type="application/xml"/>),
115 'rss2-full' => q(<format name="rss2-full" type="application/xml"/>),
116 'srw_dc' => q(<format name="srw_dc" type="application/xml" namespace_uri="info:srw/schema/1/dc-schema" schema_location="http://www.loc.gov/z3950/agency/zing/srw/dc-schema.xsd"/>),
119 my $id = $cgi->param('id');
120 my $format = $cgi->param('format');
122 if (not defined $format) {
123 emit_formats($id, $format_to_stylesheet_map, $format_info, $cgi);
126 # koha:biblionumber:0152018484
127 if ($id =~ /koha:biblionumber:(\d+)/) {
128 my $biblionumber = $1;
132 my $marcxml = GetXmlBiblio($biblionumber);
133 unless (defined $marcxml) {
135 print $cgi->header( -status => '404 record not found');
139 my $xslt_file = get_xslt_file( $format, $format_to_stylesheet_map, $format_info );
140 unless( defined $xslt_file ) {
141 print $cgi->header( -status => '406 invalid format requested' );
144 my $xslt_engine = Koha::XSLT::Base->new;
145 $content = $xslt_engine->transform({
150 if( !defined $content || $xslt_engine->err ) {
151 print $cgi->header( -status => '500 internal error' );
155 print $cgi->header( -type =>'application/xml', -charset => 'UTF-8' );
158 # ID is obviously wrong, so 404
159 print $cgi->header( -status => '404 record not found');
163 # supplied a format but no id - caller is doing it wrong
164 print $cgi->header( -status => '400 bad request - if you specify format, must specify id');
171 my ($id, $format_to_stylesheet_map, $format_info, $cgi) = @_;
174 print $cgi->header( -type =>'application/xml', -status => '300 multiple choices' );
176 print $cgi->header( -type =>'application/xml', -status => '200 Ok' );
179 print "<?xml version='1.0' encoding='utf-8' ?>\n";
181 print qq(<formats id="$id">\n);
186 my $marcflavour = uc(C4::Context->preference('marcflavour'));
187 foreach my $format (sort keys %{ $format_to_stylesheet_map->{$marcflavour} }) {
188 print $format_info->{$format}, "\n";
190 print "</formats>\n";
196 my ($format, $format_to_stylesheet_map, $format_info) = @_;
197 $format = lc $format;
199 my $marcflavour = uc(C4::Context->preference('marcflavour'));
200 return unless $format_to_stylesheet_map->{$marcflavour}->{$format};
202 my $xslt_file = C4::Context->config('intrahtdocs') .
204 $format_to_stylesheet_map->{$marcflavour}->{$format};
211 Koha Development Team <http://koha-community.org/>
213 Originally written by Joshua Ferraro <jmf@liblime.com>
215 Improved by Galen Charlton <galen.charlton@liblime.com>