exceljs/lib/xlsx/xform/book/defined-name-xform.js

Excel Workbook Manager - Read and Write xlsx and csv Files.

/**
 * Copyright (c) 2016 Guyon Roche
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

'use strict';

var utils = require('../../../utils/utils');
var BaseXform = require('../base-xform');

var DefinedNamesXform = module.exports = function() {
};

utils.inherits(DefinedNamesXform, BaseXform, {
  render: function(xmlStream, model) {
    // <definedNames>
    //   <definedName name="name">name.ranges.join(',')</definedName>
    //   <definedName name="_xlnm.Print_Area" localSheetId="0">name.ranges.join(',')</definedName>
    // </definedNames>
    xmlStream.openNode('definedName', {
      name: model.name,
      localSheetId: model.localSheetId
    });
    xmlStream.writeText(model.ranges.join(','));
    xmlStream.closeNode();
  },
  parseOpen: function(node) {
    switch(node.name) {
      case 'definedName':
        this._parsedName = node.attributes.name;
        this._parsedLocalSheetId = node.attributes.localSheetId;
        this._parsedText = [];
        return true;
      default:
        return false;
    }
  },
  parseText: function(text) {
    this._parsedText.push(text);
  },
  parseClose: function() {
    this.model = {
      name: this._parsedName,
      ranges: extractRanges(this._parsedText.join(''))
    };
    if (this._parsedLocalSheetId !== undefined) {
      this.model.localSheetId = parseInt(this._parsedLocalSheetId);
    }
    return false;
  }
});

function extractRanges(parsedText) {
 var ranges = [];
 var quotesOpened = false;
 var last = '';
 parsedText.split(',').forEach(function (item) {
     if(!item){
         return;
       }
     var quotes = (item.match(/'/g) || []).length;

         if (!quotes) {
         if (quotesOpened) {
             last += item + ',';
           } else {
             ranges.push(item);
           }
         return;
       }
     var quotesEven = quotes % 2 === 0;

         if (!quotesOpened && quotesEven) {
         ranges.push(item);
       } else if (quotesOpened && !quotesEven) {
         quotesOpened = false;
         ranges.push(last + item);
         last = '';
       } else {
         quotesOpened = true;
         last += item + ',';
       }
   });
 return ranges;
}