Perl

Control ASCII Download Line Endings (CrlfMode)

Demonstrates the CrlfMode property, which controls line-ending conversion when downloading in ASCII transfer mode: 0 leaves them as received, 1 converts to CRLF, 2 to LF, and 3 to CR.

Background: When you deliberately download text in ASCII mode, CrlfMode lets you force the saved file's line endings to a specific convention — CRLF for Windows tools, LF for Unix — regardless of what the server sends. It applies only in ASCII mode, so pair it with SetTypeAscii; in the recommended default binary mode, bytes are preserved verbatim and this setting has no effect. Reserve ASCII mode (and this property) for the rare case where line-ending normalization of text is actually wanted.

Chilkat Perl Downloads

Download Chilkat for Perl

Perl

use chilkat();

$success = 0;

$ftp = chilkat::CkFtp2->new();

$ftp->put_Hostname("ftp.example.com");
$ftp->put_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->put_Password("myPassword");

$success = $ftp->Connect();
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

#  CrlfMode controls line-ending conversion for ASCII-mode downloads:
#    0 = leave line endings as received (default)
#    1 = convert to CRLF
#    2 = convert to LF
#    3 = convert to CR
#  Convert a downloaded text file's line endings to CRLF (useful when saving for Windows).
$ftp->put_CrlfMode(1);

#  CrlfMode applies only in ASCII transfer mode.
$success = $ftp->SetTypeAscii();
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

$success = $ftp->GetFile("public_html/readme.txt","qa_output/readme.txt");
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

print "Downloaded with CRLF line endings." . "\r\n";

$success = $ftp->Disconnect();
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}