(Tcl) FTP Non-Recursive Sync Directory (Download)

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Download files from the server that have filenames matchhing a pattern, and don't yet exist in a local directory.

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load ./chilkat.dll

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

set ftp [new_CkFtp2]

CkFtp2_put_Hostname $ftp "ftp.example.com"
CkFtp2_put_Username $ftp "myUsername"
CkFtp2_put_Password $ftp "myPassword"
CkFtp2_put_Port $ftp 21
CkFtp2_put_AuthTls $ftp 1

# Connect and login to the FTP server.
set success [CkFtp2_Connect $ftp]
if {$success != 1} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

# Change to the remote directory where the files are located.
# This step is only necessary if the files are not in the root directory
# of the FTP account.
set success [CkFtp2_ChangeRemoteDir $ftp "qa"]
if {$success != 1} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

# Indicate that we only want to download files with filenames ending in ".txt"
CkFtp2_put_SyncMustMatch $ftp "*.txt"

# Modes for synchronization are as follows:
# mode=0: Download all files
# mode=1: Download all files that do not exist on the local filesystem.
# mode=2: Download newer or non-existant files.
# mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
# mode=5: Download only missing files or files with size differences.
# mode=6: Same as mode 5, but also download newer files.
# mode=99: Do not download files, but instead delete remote files that do not exist locally.
set mode 1

# Download all files matching "*.txt" from the current remote ftp directory.
# The files are downloaded into c:/temp/qa_output
set success [CkFtp2_SyncLocalDir $ftp "c:/temp/qa_output" $mode]
if {$success != 1} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

# We can see what files were downloaded in the SyncedFiles property,
# which lists the files one per line.
puts [CkFtp2_syncedFiles $ftp]

# Perhaps we wish to delete the files we just downloaded from the server..
set sb [new_CkStringBuilder]

CkStringBuilder_Append $sb [CkFtp2_syncedFiles $ftp]

set st [new_CkStringTable]

CkStringTable_AppendFromSb $st $sb

set numFiles [CkStringTable_get_Count $st]
set i 0

while {$i < $numFiles} {
    set remoteFilename [CkStringTable_stringAt $st $i]
    puts "Deleting $remoteFilename from the FTP server"
    set success [CkFtp2_DeleteRemoteFile $ftp $remoteFilename]
    if {$success != 1} then {
        puts [CkFtp2_lastErrorText $ftp]
        delete_CkFtp2 $ftp
        delete_CkStringBuilder $sb
        delete_CkStringTable $st
        exit
    }

    set i [expr $i + 1]
}

set success [CkFtp2_Disconnect $ftp]

delete_CkFtp2 $ftp
delete_CkStringBuilder $sb
delete_CkStringTable $st