PowerShell

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.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$ftp = New-Object Chilkat.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"

$success = $ftp.Connect()
if ($success -eq $false) {
    $($ftp.LastErrorText)
    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 -eq $false) {
    $($ftp.LastErrorText)
    exit
}

$success = $ftp.GetFile("public_html/readme.txt","qa_output/readme.txt")
if ($success -eq $false) {
    $($ftp.LastErrorText)
    exit
}

$("Downloaded with CRLF line endings.")

$success = $ftp.Disconnect()
if ($success -eq $false) {
    $($ftp.LastErrorText)
    exit
}