React Native

Get a Remote File's Creation Time

Demonstrates the Chilkat SFtp.GetFileCreateTimeStr method, which returns a remote file's creation date and time. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: Creation time is the least universally available of the three timestamps: many Unix filesystems historically tracked only modified and accessed times, so a server may return nothing or a placeholder. Where it is supported it is genuinely useful — it does not change when a file is edited, unlike the modified time — but code should tolerate its absence rather than depend on it.

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React Native

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

async function chilkatExample() {
  // Demonstrates the SFtp.GetFileCreateTimeStr method, which returns a remote file's creation date
  // and time.  The 1st argument is the remote path (or handle), the 2nd selects whether symbolic
  // links are followed, and the 3rd indicates whether the 1st argument is a handle.

  const sftp = new SFtp();

  // Connect, authenticate, and initialize the SFTP subsystem.
  const port = 22;
  try {
    await sftp.connectAsync('sftp.example.com', port);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // 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.
  const password = 'mySshPassword';

  try {
    await sftp.authenticatePwAsync('mySshLogin', password);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  try {
    await sftp.initializeSftpAsync();
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
  // The 3rd argument (bIsHandle) is false here because the 1st argument is a path, not an
  // open handle.
  const bFollowLinks = true;
  const bIsHandle = false;

  let createTime: string;
  try {
    createTime = await sftp.getFileCreateTimeStrAsync('subdir/report.pdf', bFollowLinks, bIsHandle);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  console.log(`Created: ${createTime}`);

  // Note: Not all servers and filesystems record a creation time.

  sftp.disconnect();
}