React Native

Append Text Content to a Remote FTP File

Demonstrates the Chilkat Ftp2.AppendFileFromTextData method, which appends text (encoded with a charset) to a remote file. The arguments are the remote filename, the text, and the charset.

Background: This is the append equivalent of PutFileFromTextData — the simplest way to add a line or record to a remote log or data file directly from a string, with no local file involved. The charset controls the encoding of the appended content; the remote filename's own encoding is handled separately.

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React Native

import { Ftp2 } from '@chilkat/react-native'

async function chilkatExample() {
  // Demonstrates the Ftp2.AppendFileFromTextData method, which appends text (encoded with a
  // charset) to a remote file.  The 1st argument is the remote filename, the 2nd is the text, and
  // the 3rd is the charset.

  const ftp = new Ftp2();

  ftp.hostname = 'ftp.example.com';
  ftp.username = 'myFtpLogin';

  // Normally you would not hard-code the password in source.  You should instead obtain it
  // from an interactive prompt, environment variable, or a secrets vault.
  ftp.password = 'myPassword';

  try {
    await ftp.connectAsync();
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  // Append a log line directly, with no local file involved.
  const line = '2026-07-27 12:00:00  server started\n';
  try {
    await ftp.appendFileFromTextDataAsync('logs/app.log', line, 'utf-8');
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  console.log('Appended a log line.');

  try {
    await ftp.disconnectAsync();
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }
}