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

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $ftp = Chilkat2::Ftp2->new;

$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');

my $success = $ftp->Connect();
if (!$success) {
    print $ftp->LastErrorText, "\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->CrlfMode(1);

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

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

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

$success = $ftp->Disconnect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}