lib_docs/serialize/xml/serializeAnnotation.js

/*
 * Copyright (C) 2015 ICOS Group, Newcastle University.  All rights reserved.
 * Contact:  James Alastair McLaughlin <j.a.mclaughlin@ncl.ac.uk>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

"use strict";

import xml from 'xml'

module.exports = function serializeAnnotation(sbolDocument, xmlAttribs, annotation) {

    var namespaces = listNamespaces(xmlAttribs).filter(function(namespace) {
        return annotation.name.indexOf(namespace.uri) === 0;
    });

    if(namespaces.length === 0) {
        throw new Error('No namespace found for annotation: ' + annotation.name);
    }

    var namespace = namespaces.sort((a, b) => a.uri.length - b.uri.length)[0];

    var prefixedName = namespace.prefix + ':' + annotation.name.slice(namespace.uri.length);

    return {
        [prefixedName]: annotation.value
    };
}

function listNamespaces(xmlAttribs) {

    var namespaces = [];

    Object.keys(xmlAttribs).forEach(function(attrib) {

        var tokens = attrib.split(':');

        if(tokens[0] === 'xmlns') {

            namespaces.push({
                prefix: tokens[1],
                uri: xmlAttribs[attrib]
            })
        }
    });

    return namespaces;
}