PowerShell

Check if an FTP Listing Entry is a Directory

Demonstrates the Chilkat Ftp2.GetIsDirectory method, which returns whether a cached directory-listing entry is a directory. The only argument is a zero-based index. An invalid index returns false.

Background: Distinguishing directories from files is the first thing most listing code needs — to render a folder tree, to decide whether to recurse, or to apply different handling. This reads the type from the cached listing, so it is a local lookup rather than a server query. Reliability depends on the server's listing format conveying the type, which the common Unix and MLSD formats do.

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

$success = $false

#  Demonstrates the Ftp2.GetIsDirectory method, which returns whether a cached directory-listing
#  entry is a directory.  The only argument is a zero-based index into the current listing.

$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
}

#  GetDirCount retrieves the directory listing on the first call and returns the number of
#  entries.  A negative return indicates failure.
$n = $ftp.GetDirCount()
if ($n -lt 0) {
    $($ftp.LastErrorText)
    exit
}

for ($i = 0; $i -le $n - 1; $i++) {
    $name = $ftp.GetFilename($i)
    if ($ftp.GetIsDirectory($i)) {
        $("[DIR]  " + $name)
    }
    else {
        $("       " + $name)
    }

}

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