React Native

CSV Append New Row

Demonstrates how to append a new row to a CSV. React Native

import { Csv, StringBuilder } from '@chilkat/react-native'

function chilkatExample() {
  // We have the following CSV...

  // permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
  // lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
  // mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
  // flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
  // infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
  // gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

  const bCrlf = true;
  const sb = new StringBuilder();
  sb.appendLine('permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round', bCrlf);
  sb.appendLine('lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b', bCrlf);
  sb.appendLine('mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed', bCrlf);
  sb.appendLine('flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a', bCrlf);
  sb.appendLine('infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a', bCrlf);
  sb.appendLine('gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed', bCrlf);

  const csv = new Csv();

  csv.hasColumnNames = true;
  csv.loadFromString(sb.getAsString());

  // Let's say we want to append the following row:
  // yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a

  // If we have the row as-is, we could do this:
  const csvTemp = new Csv();
  csvTemp.loadFromString('yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a');
  const numCols = csvTemp.numColumns;
  let i = 0;
  const row = csv.numRows;
  while (i < numCols) {
    csv.setCell(row, i, csvTemp.getCell(0, i));
    i++;
  }

  // Show the updated CSV:
  console.log(csv.saveToString());

  // Output should be:
  // permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
  // lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
  // mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
  // flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
  // infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
  // gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed
  // yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a
}