@zlooun/exceljs/dist/es5/stream/xlsx/sheet-rels-writer.js

Fixes the problem with writing a file using streams and not using RAM based on 'exeljs'

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
/* eslint-disable max-classes-per-file */
var utils = require('../../utils/utils');
var RelType = require('../../xlsx/rel-type');
var HyperlinksProxy = /*#__PURE__*/function () {
  function HyperlinksProxy(sheetRelsWriter) {
    _classCallCheck(this, HyperlinksProxy);
    this.writer = sheetRelsWriter;
  }
  _createClass(HyperlinksProxy, [{
    key: "push",
    value: function push(hyperlink) {
      this.writer.addHyperlink(hyperlink);
    }
  }]);
  return HyperlinksProxy;
}();
var SheetRelsWriter = /*#__PURE__*/function () {
  function SheetRelsWriter(options) {
    _classCallCheck(this, SheetRelsWriter);
    // in a workbook, each sheet will have a number
    this.id = options.id;

    // count of all relationships
    this.count = 0;

    // keep record of all hyperlinks
    this._hyperlinks = [];
    this._workbook = options.workbook;
  }
  _createClass(SheetRelsWriter, [{
    key: "stream",
    get: function get() {
      if (!this._stream) {
        // eslint-disable-next-line no-underscore-dangle
        this._stream = this._workbook._openStream("/xl/worksheets/_rels/sheet".concat(this.id, ".xml.rels"));
      }
      return this._stream;
    }
  }, {
    key: "length",
    get: function get() {
      return this._hyperlinks.length;
    }
  }, {
    key: "each",
    value: function each(fn) {
      return this._hyperlinks.forEach(fn);
    }
  }, {
    key: "hyperlinksProxy",
    get: function get() {
      return this._hyperlinksProxy || (this._hyperlinksProxy = new HyperlinksProxy(this));
    }
  }, {
    key: "addHyperlink",
    value: function addHyperlink(hyperlink) {
      // Write to stream
      var relationship = {
        Target: hyperlink.target,
        Type: RelType.Hyperlink,
        TargetMode: 'External'
      };
      var rId = this._writeRelationship(relationship);

      // store sheet stuff for later
      this._hyperlinks.push({
        rId: rId,
        address: hyperlink.address
      });
    }
  }, {
    key: "addMedia",
    value: function addMedia(media) {
      return this._writeRelationship(media);
    }
  }, {
    key: "addRelationship",
    value: function addRelationship(rel) {
      return this._writeRelationship(rel);
    }
  }, {
    key: "commit",
    value: function commit() {
      if (this.count) {
        // write xml utro
        this._writeClose();
        // and close stream
        this.stream.end();
      }
    }

    // ================================================================================
  }, {
    key: "_writeOpen",
    value: function _writeOpen() {
      this.stream.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n       <Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\">");
    }
  }, {
    key: "_writeRelationship",
    value: function _writeRelationship(relationship) {
      if (!this.count) {
        this._writeOpen();
      }
      var rId = "rId".concat(++this.count);
      if (relationship.TargetMode) {
        this.stream.write("<Relationship Id=\"".concat(rId, "\"") + " Type=\"".concat(relationship.Type, "\"") + " Target=\"".concat(utils.xmlEncode(relationship.Target), "\"") + " TargetMode=\"".concat(relationship.TargetMode, "\"") + '/>');
      } else {
        this.stream.write("<Relationship Id=\"".concat(rId, "\" Type=\"").concat(relationship.Type, "\" Target=\"").concat(relationship.Target, "\"/>"));
      }
      return rId;
    }
  }, {
    key: "_writeClose",
    value: function _writeClose() {
      this.stream.write('</Relationships>');
    }
  }]);
  return SheetRelsWriter;
}();
module.exports = SheetRelsWriter;
//# sourceMappingURL=sheet-rels-writer.js.map