Tcl

Append Bytes to a Remote FTP File (BinData)

Demonstrates the Chilkat Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote file. The first argument is the remote filename and the second is the BinData. No conversion is performed.

Background: The binary append: add in-memory bytes to the end of a remote file without an intermediate local file and without any encoding or line-ending translation. It is the right choice for growing a binary file — concatenating captured data, for instance — where exact bytes matter.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote
#  file.  The 1st argument is the remote filename and the 2nd is the BinData.

set ftp [new_CkFtp2]

CkFtp2_put_Hostname $ftp "ftp.example.com"
CkFtp2_put_Username $ftp "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.
CkFtp2_put_Password $ftp "myPassword"

set success [CkFtp2_Connect $ftp]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

set bd [new_CkBinData]

set success [CkBinData_LoadFile $bd "qa_data/more_data.bin"]
if {$success == 0} then {
    puts [CkBinData_lastErrorText $bd]
    delete_CkFtp2 $ftp
    delete_CkBinData $bd
    exit
}

set success [CkFtp2_AppendFileBd $ftp "data/collected.bin" $bd]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    delete_CkBinData $bd
    exit
}

puts "Appended [CkBinData_get_NumBytes $bd] bytes."

set success [CkFtp2_Disconnect $ftp]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    delete_CkBinData $bd
    exit
}


delete_CkFtp2 $ftp
delete_CkBinData $bd