PowerShell

Get a Remote FTP File's Size by Name as a String

Demonstrates the Chilkat Ftp2.GetSizeStrByName method, which returns the size in bytes of a named file in the current remote directory as a decimal string. The only argument is the filename.

Background: Returning the size as text avoids integer-width limits entirely, so this is the safe choice for a file of any size and for languages without a convenient large-integer type. Like the other by-name lookups it takes a bare filename in the current directory; parse the string when you need arithmetic, or use it directly for display.

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

$success = $false

#  Demonstrates the Ftp2.GetSizeStrByName method, which returns the size in bytes of a named file
#  in the current remote directory as a decimal string.  The only argument is the filename.

$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
}

$success = $ftp.ChangeRemoteDir("public_html")
if ($success -eq $false) {
    $($ftp.LastErrorText)
    exit
}

#  The string form avoids integer-size limits, so it is safe for files of any size.
$fileSize = $ftp.GetSizeStrByName("bigfile.zip")
if ($ftp.LastMethodSuccess -eq $false) {
    $($ftp.LastErrorText)
    exit
}

$("bigfile.zip is " + $fileSize + " bytes")

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