Ruby

Directory Existence Check

See more FTP Examples

How to test if a directory exists on an FTP server.

A good way to check to see if a directory already exists is to try to "cd" to that remote directory by calling ChangeRemoteDir. If it succeeds, then the directory exists. If not, then it does not exist. An alternative method is to set the ListPattern = "*" and then iterate over the files/directories, looking for the directory.

Ruby

require 'chilkat'

success = false

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

ftp = Chilkat::CkFtp2.new()

ftp.put_Hostname("ftp.example.com")
ftp.put_Username("login")
ftp.put_Password("password")

# Connect and login to the FTP server.
success = ftp.Connect()
if (success != true)
    print ftp.lastErrorText() + "\n";
    exit
end

# Does the "temp" directory exist?

dirExists = ftp.ChangeRemoteDir("/temp")
if (dirExists == true)
    print "Yes, the temp directory exists." + "\n";
    #  Yes, it exists. Restore the current remote dir:
    success = ftp.ChangeRemoteDir("..")
    if (success != true)
        print ftp.lastErrorText() + "\n";
        exit
    end

end

# Alternatively, you may set the ListPattern = "*" and 
#  look for the directory:
ftp.put_ListPattern("*")

n = ftp.GetDirCount()
if (n < 0)
    # Failed to get directory listing based on ListPattern
    print ftp.lastErrorText() + "\n";
    exit
end

if (n > 0)
    for i in 0 .. n - 1

        isDir = ftp.GetIsDirectory(i)
        if (isDir == true)

            fname = ftp.getFilename(i)
            if (fname == "temp")
                print "Found temp directory!" + "\n";
                success = ftp.Disconnect()
                exit
            end

        end

    end
end

success = ftp.Disconnect()