docxtemplater/js/xml-matcher.js

docx and pptx generator working with templates and data (like Mustache, for Word and Powerpoint documents)

"use strict"; // res class responsibility is to parse the XML.

var _require = require("./doc-utils.js"),
    pregMatchAll = _require.pregMatchAll;

function handleRecursiveCase(res) {
  /*
   * Because xmlTemplater is recursive (meaning it can call it self), we need to handle special cases where the XML is not valid:
   * For example with res string "I am</w:t></w:r></w:p><w:p><w:r><w:t>sleeping",
   *   - we need to match also the string that is inside an implicit <w:t> (that's the role of replacerUnshift) (in res case 'I am')
   *   - we need to match the string that is at the right of a <w:t> (that's the role of replacerPush) (in res case 'sleeping')
   * the test: describe "scope calculation" it "should compute the scope between 2 <w:t>" makes sure that res part of code works
   * It should even work if they is no XML at all, for example if the code is just "I am sleeping", in res case however, they should only be one match
   */
  function replacerUnshift() {
    var pn = {
      array: Array.prototype.slice.call(arguments)
    };
    pn.array.shift();
    var match = pn.array[0] + pn.array[1]; // add match so that pn[0] = whole match, pn[1]= first parenthesis,...

    pn.array.unshift(match);
    pn.array.pop();
    var offset = pn.array.pop();
    pn.offset = offset;
    pn.first = true; // add at the beginning

    res.matches.unshift(pn);
  }

  if (res.content.indexOf("<") === -1 && res.content.indexOf(">") === -1) {
    res.content.replace(/^()([^<>]*)$/, replacerUnshift);
  }

  var r = new RegExp("^()([^<]+)</(?:".concat(res.tagsXmlArrayJoined, ")>"));
  res.content.replace(r, replacerUnshift);

  function replacerPush() {
    var pn = {
      array: Array.prototype.slice.call(arguments)
    };
    pn.array.pop();
    var offset = pn.array.pop();
    pn.offset = offset;
    pn.last = true;

    if (pn.array[0].indexOf("/>") !== -1) {
      return;
    } // add at the end


    res.matches.push(pn);
  }

  r = new RegExp("(<(?:".concat(res.tagsXmlArrayJoined, ")[^>]*>)([^>]+)$"));
  res.content.replace(r, replacerPush);
  return res;
}

module.exports = function xmlMatcher(content, tagsXmlArray) {
  var res = {};
  res.content = content;
  res.tagsXmlArray = tagsXmlArray;
  res.tagsXmlArrayJoined = res.tagsXmlArray.join("|");
  var regexp = new RegExp("(?:(<(?:".concat(res.tagsXmlArrayJoined, ")[^>]*>)([^<>]*)</(?:").concat(res.tagsXmlArrayJoined, ")>)|(<(?:").concat(res.tagsXmlArrayJoined, ")[^>]*/>)"), "g");
  res.matches = pregMatchAll(regexp, res.content);
  return handleRecursiveCase(res);
};