Ruby

Delete Local Files that Do Not Exist on the FTP Server

See more FTP Examples

Demonstrates how to get a list of local files in a directory tree that do not exist on the FTP server. 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")

ftp.put_KeepSessionLog(true)

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

# Set the current remote directory to the root of
# the remote tree to be compared.
success = ftp.ChangeRemoteDir("abc123")
if (success != true)
    print ftp.lastErrorText() + "\n";
    exit
end

# Recursively descend the local directory tree
# and find the files that exist locally but not remotely.
# These are the files what would be uploaded via
# the SyncRemoteTree method call with mode = 1.
# (Mode 1 would upload all files that do not exist on the FTP server.)

# The actual uploading is avoided by setting the preview-only argument to true.
mode = 1
descendTree = true
previewOnly = true
success = ftp.SyncRemoteTree2("/temp/abc123",mode,descendTree,previewOnly)
if (success != true)
    print ftp.lastErrorText() + "\n";
    exit
end

# The files what would've been uploaded are now available in the SyncPreview property,
# which contains a list of local file paths, one per line.
# A program can iterate over them like this:
sa = Chilkat::CkStringArray.new()
sa.LoadFromText(ftp.syncPreview())

fac = Chilkat::CkFileAccess.new()

numFiles = sa.get_Count()
i = 0

while (i < numFiles)
    localFilePath = sa.getString(i)
    print localFilePath + "\n";

    # An application can delete the file using Chilkat's file access object,
    # or it can choose to use the native file API available in the programming language:
    success = fac.FileDelete(localFilePath)
    if (success != true)
        print "Failed to delete: " + localFilePath + "\n";
    end

    i = i + 1
end

success = ftp.Disconnect()