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Current File : /home/opti/workflow/node_modules/aws-sdk/lib/xml/builder.js

var util = require('../util');
var builder = require('xmlbuilder');

function XmlBuilder() { }

XmlBuilder.prototype.toXML = function(params, shape, rootElement) {
  var xml = builder.create(rootElement);
  applyNamespaces(xml, shape);
  serialize(xml, params, shape);
  return xml.children.length === 0 ? '' : xml.root().toString();
};

function serialize(xml, value, shape) {
  switch(shape.type) {
    case 'structure': return serializeStructure(xml, value, shape);
    case 'map': return serializeMap(xml, value, shape);
    case 'list': return serializeList(xml, value, shape);
    default: return serializeScalar(xml, value, shape);
  }
}

function serializeStructure(xml, params, shape) {
  util.arrayEach(shape.memberNames, function(memberName) {
    var memberShape = shape.members[memberName];
    if (memberShape.location !== 'body') return;

    var value = params[memberName];
    var name = memberShape.queryName || memberShape.name;
    if (value !== undefined && value !== null) {
      if (memberShape.isXmlAttribute) {
        xml.att(name, value);
      } else if (memberShape.flattened) {
        serialize(xml, value, memberShape);
      } else {
        var element = xml.ele(name);
        applyNamespaces(element, memberShape);
        serialize(element, value, memberShape);
      }
    }
  });
}

function serializeMap(xml, map, shape) {
  var xmlKey = shape.key.queryName || shape.key.name || 'key';
  var xmlValue = shape.value.queryName || shape.value.name || 'value';

  util.each(map, function(key, value) {
    var entry = xml.ele(shape.flattened ? shape.name : 'entry');
    serialize(entry.ele(xmlKey), key, shape.key);
    serialize(entry.ele(xmlValue), value, shape.value);
  });
}

function serializeList(xml, list, shape) {
  if (shape.flattened) {
    util.arrayEach(list, function(value) {
      var name = shape.member.queryName || shape.member.name || shape.name;
      var element = xml.ele(name);
      serialize(element, value, shape.member);
    });
  } else {
    util.arrayEach(list, function(value) {
      var name = shape.member.queryName || shape.member.name || 'member';
      var element = xml.ele(name);
      serialize(element, value, shape.member);
    });
  }
}

function serializeScalar(xml, value, shape) {
  xml.txt(shape.toWireFormat(value));
}

function applyNamespaces(xml, shape) {
  var uri, prefix = 'xmlns';
  if (shape.xmlNamespaceUri) {
    uri = shape.xmlNamespaceUri;
    if (shape.xmlNamespacePrefix) prefix += ':' + shape.xmlNamespacePrefix;
  } else if (xml.isRoot && shape.api.xmlNamespaceUri) {
    uri = shape.api.xmlNamespaceUri;
  }

  if (uri) xml.att(prefix, uri);
}

module.exports = XmlBuilder;

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