docxtemplater-link-module-free/js/linkManager.js

Open Source Link Module for docxtemplater 3.x

'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var DocUtils = require('docxtemplater').DocUtils;

var rels = {
  getPrefix: function getPrefix(fileType) {
    return fileType === 'docx' ? 'word' : 'ppt';
  },
  getFileTypeName: function getFileTypeName(fileType) {
    return fileType === 'docx' ? 'document' : 'presentation';
  },
  getRelsFileName: function getRelsFileName(fileName) {
    return fileName.replace(/^.*?([a-zA-Z0-9]+)\.xml$/, '$1') + '.xml.rels';
  },
  getRelsFilePath: function getRelsFilePath(fileName, fileType) {
    var relsFileName = rels.getRelsFileName(fileName);
    var prefix = fileType === 'pptx' ? 'ppt/slides' : 'word';
    return prefix + '/_rels/' + relsFileName;
  }
};

module.exports = function () {
  function LinkManager(zip, fileName, xmlDocuments, fileType) {
    _classCallCheck(this, LinkManager);

    this.nbLinks = 1;
    this.fileName = fileName;
    this.prefix = rels.getPrefix(fileType);
    this.zip = zip;
    this.xmlDocuments = xmlDocuments;
    this.fileTypeName = rels.getFileTypeName(fileType);
    var relsFilePath = rels.getRelsFilePath(fileName, fileType);
    this.relsDoc = xmlDocuments[relsFilePath] || this.createEmptyRelsDoc(xmlDocuments, relsFilePath);
  }

  _createClass(LinkManager, [{
    key: 'createEmptyRelsDoc',
    value: function createEmptyRelsDoc(xmlDocuments, relsFileName) {
      var mainRels = this.prefix + '/_rels/' + this.fileTypeName + '.xml.rels';
      var doc = xmlDocuments[mainRels];
      if (!doc) {
        var err = new Error('Could not copy from empty relsdoc');
        err.properties = {
          mainRels: mainRels,
          relsFileName: relsFileName,
          files: Object.keys(this.zip.files)
        };
        throw err;
      }
      var relsDoc = DocUtils.str2xml(DocUtils.xml2str(doc));
      var relationships = relsDoc.getElementsByTagName('Relationships')[0];
      var relationshipChilds = relationships.getElementsByTagName('Relationship');
      for (var i = 0, l = relationshipChilds.length; i < l; i++) {
        relationships.removeChild(relationshipChilds[i]);
      }
      xmlDocuments[relsFileName] = relsDoc;
      return relsDoc;
    }
  }, {
    key: 'loadLinkRels',
    value: function loadLinkRels() {
      var iterable = this.relsDoc.getElementsByTagName('Relationship');
      return Array.prototype.reduce.call(iterable, function (max, relationship) {
        var id = relationship.getAttribute('Id');
        if (/^rId[0-9]+$/.test(id)) {
          return Math.max(max, parseInt(id.substr(3), 10));
        }
        return max;
      }, 0);
    }
  }, {
    key: 'addLinkRels',
    value: function addLinkRels(linkValue) {
      var relationships = this.relsDoc.getElementsByTagName('Relationships')[0];
      var relationshipChilds = relationships.getElementsByTagName('Relationship');

      var newTag = this.relsDoc.createElement('Relationship');
      newTag.namespaceURI = null;
      var rId = 'link_generated_' + (relationshipChilds.length + 1);
      newTag.setAttribute('Id', rId);
      newTag.setAttribute('Type', 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink');
      newTag.setAttribute('Target', linkValue);
      newTag.setAttribute('TargetMode', 'External');
      relationships.appendChild(newTag);
      return rId;
    }
  }]);

  return LinkManager;
}();