dynatrace-cordova-outsystems-plugin/node_modules/w3c-xmlserializer/lib/attributes.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

"use strict";

const xnv = require("xml-name-validator");

const { NAMESPACES } = require("./constants");

function generatePrefix(map, newNamespace, prefixIndex) {
  const generatedPrefix = "ns" + prefixIndex;
  map[newNamespace] = [generatedPrefix];
  return generatedPrefix;
}

function preferredPrefixString(map, ns, preferredPrefix) {
  const candidateList = map[ns];
  if (!candidateList) {
    return null;
  }
  if (candidateList.includes(preferredPrefix)) {
    return preferredPrefix;
  }
  return candidateList[candidateList.length - 1];
}

function serializeAttributeValue(value/* , requireWellFormed*/) {
  if (value === null) {
    return "";
  }
  // TODO: Check well-formedness
  return value
    .replace(/&/g, "&")
    .replace(/"/g, """)
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/\t/g, "&#x9;")
    .replace(/\n/g, "&#xA;")
    .replace(/\r/g, "&#xD;");
}

function serializeAttributes(
  element,
  map,
  localPrefixes,
  ignoreNamespaceDefAttr,
  requireWellFormed,
  refs
) {
  let result = "";
  const namespaceLocalnames = Object.create(null);
  for (const attr of element.attributes) {
    if (
      requireWellFormed &&
      namespaceLocalnames[attr.namespaceURI] &&
      namespaceLocalnames[attr.namespaceURI].has(attr.localName)
    ) {
      throw new Error("Found duplicated attribute");
    }
    if (!namespaceLocalnames[attr.namespaceURI]) {
      namespaceLocalnames[attr.namespaceURI] = new Set();
    }
    namespaceLocalnames[attr.namespaceURI].add(attr.localName);
    const attributeNamespace = attr.namespaceURI;
    let candidatePrefix = null;
    if (attributeNamespace !== null) {
      candidatePrefix = preferredPrefixString(
        map,
        attributeNamespace,
        attr.prefix
      );
      if (attributeNamespace === NAMESPACES.XMLNS) {
        if (
          attr.value === NAMESPACES.XML ||
          (attr.prefix === null && ignoreNamespaceDefAttr) ||
          (attr.prefix !== null &&
            localPrefixes[attr.localName] !== attr.value &&
            map[attr.value].includes(attr.localName))
        ) {
          continue;
        }
        if (requireWellFormed && attr.value === NAMESPACES.XMLNS) {
          throw new Error(
            "The XMLNS namespace is reserved and cannot be applied as an element's namespace via XML parsing"
          );
        }
        if (requireWellFormed && attr.value === "") {
          throw new Error(
            "Namespace prefix declarations cannot be used to undeclare a namespace"
          );
        }
        if (attr.prefix === "xmlns") {
          candidatePrefix = "xmlns";
        }
      } else if (candidatePrefix === null) {
        candidatePrefix = generatePrefix(
          map,
          attributeNamespace,
          refs.prefixIndex++
        );
        result += ` xmlns:${candidatePrefix}="${serializeAttributeValue(
          attributeNamespace,
          requireWellFormed
        )}"`;
      }
    }

    result += " ";
    if (candidatePrefix !== null) {
      result += candidatePrefix + ":";
    }
    if (
      requireWellFormed &&
      (attr.localName.includes(":") ||
        !xnv.name(attr.localName) ||
        (attr.localName === "xmlns" && attributeNamespace === null))
    ) {
      throw new Error("Invalid attribute localName value");
    }
    result += `${attr.localName}="${serializeAttributeValue(
      attr.value,
      requireWellFormed
    )}"`;
  }
  return result;
}

module.exports.preferredPrefixString = preferredPrefixString;
module.exports.generatePrefix = generatePrefix;
module.exports.serializeAttributeValue = serializeAttributeValue;
module.exports.serializeAttributes = serializeAttributes;