Batch import CSV to a Spreadsheet #gas #sheet #csv

3acd892713c001e9a579.md

###Batch import CSV to a Spreadsheet http://stackoverflow.com/questions/17578317

Code.gs

function main(){
  var files = DriveApp.getFolderById(FOLDER_ID).getFilesByType('text/csv');
  var csver = new CSVer();
  csver.setSpreadsheet(SpreadsheetApp.openById(SPREADSHEET_ID));
  csver.importFile(files.next(), newChart);
}

function newChart(sheet) {
  var chartBuilder = sheet.newChart();
  chartBuilder  
  .setChartType(Charts.ChartType.TABLE)
  .addRange(sheet.getDataRange())
  .setPosition(1, 3, 1, 1);
  sheet.insertChart(chartBuilder.build());
}

CSVer.gs

var CSVer = function() {
  var spreadsheet_ = null;
  
  this.setSpreadsheet = function(spreadsheet){
    spreadsheet_ = spreadsheet;
    return this;
  }
  
  this.importFile = function(file, funct){
    try{
      var csv = file.getBlob().getDataAsString().split('\n');
      var len = csv[0].parseCSVtoArray().length;
      var data = [];
      for(var i = 0; i < csv.length; i++){
        var row = csv[i].parseCSVtoArray();
        if(row.length == len)
          data.push(row);
      }
      var newSheet = spreadsheet_.insertSheet();
      newSheet.getRange(1, 1, data.length, data[0].length).setValues(data);
      if(funct) funct(newSheet);
      return newSheet;
    }catch(err){
      Logger.log(JSON.stringify(err));
      return null;
    }
  }
}

CSVer.prototype.importFiles = function(files, funct){
  while(files.hasNext()){
    var file = files.next();
    this.importFile(file, funct);
  }
  return this;
};

Proto.js

String.prototype.parseCSVtoArray = function() {
  var text = this;
  var re_valid = /^\s*(?:'[^'\\]*(?:\\[\S\s][^'\\]*)*'|"[^"\\]*(?:\\[\S\s][^"\\]*)*"|[^,'"\s\\]*(?:\s+[^,'"\s\\]+)*)\s*(?:,\s*(?:'[^'\\]*(?:\\[\S\s][^'\\]*)*'|"[^"\\]*(?:\\[\S\s][^"\\]*)*"|[^,'"\s\\]*(?:\s+[^,'"\s\\]+)*)\s*)*$/;
  var re_value = /(?!\s*$)\s*(?:'([^'\\]*(?:\\[\S\s][^'\\]*)*)'|"([^"\\]*(?:\\[\S\s][^"\\]*)*)"|([^,'"\s\\]*(?:\s+[^,'"\s\\]+)*))\s*(?:,|$)/g;
  if (!re_valid.test(text)) return null;
  var a = [];
  text.replace(re_value,
               function(m0, m1, m2, m3) {
                 if      (m1 !== undefined) a.push(m1.replace(/\\'/g, "'"));
                 else if (m2 !== undefined) a.push(m2.replace(/\\"/g, '"'));
                 else if (m3 !== undefined) a.push(m3);
                 return '';
               });
  if (/,\s*$/.test(text)) a.push('');
  return a;
};