@maphubs/tokml/lib/strxml.js

convert geojson to kml

/* istanbul ignore file */
// strxml from https://github.com/mapbox/strxml

var esc = require('./xml-escape')

module.exports.attr = attr
module.exports.tagClose = tagClose
module.exports.tag = tag

/**
 * @param {array} _ an array of attributes
 * @returns {string}
 */
function attr(attributes) {
  if (!Object.keys(attributes).length) return ''
  return (
    ' ' +
    Object.keys(attributes)
      .map(function (key) {
        return key + '="' + esc(attributes[key]) + '"'
      })
      .join(' ')
  )
}

/**
 * @param {string} el element name
 * @param {array} attributes array of pairs
 * @returns {string}
 */
function tagClose(el, attributes) {
  return '<' + el + attr(attributes) + '/>'
}

/**
 * @param {string} el element name
 * @param {string} contents innerXML
 * @param {array} attributes array of pairs
 * @returns {string}
 */
function tag(el, attributes, contents) {
  if (Array.isArray(attributes) || typeof attributes === 'string') {
    contents = attributes
    attributes = {}
  }
  if (Array.isArray(contents))
    contents =
      '\n' +
      contents
        .map(function (content) {
          return '  ' + content
        })
        .join('\n') +
      '\n'
  return '<' + el + attr(attributes) + '>' + contents + '</' + el + '>'
}