Tcl

Get an FTP Listing Entry's Size (32-bit)

Demonstrates the Chilkat Ftp2.GetSize method, which returns the size in bytes of a cached directory-listing entry as a 32-bit integer. The only argument is a zero-based index. It returns -1 when the index is invalid or the size is unavailable.

Background: The size comes from the cached listing, so reading it for every entry costs no extra round trips. A 32-bit result cannot represent files past about 2 GB, so use GetSize64 (or GetSizeStr) when large files are possible. Directories often report no meaningful size and come back as -1, which is why the -1 case is worth handling rather than printing blindly.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the Ftp2.GetSize method, which returns the size in bytes of a cached
#  directory-listing entry as a 32-bit integer.  The only argument is a zero-based index.

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 success [CkFtp2_ChangeRemoteDir $ftp "public_html"]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

#  GetDirCount retrieves the directory listing on the first call and returns the number of
#  entries.  A negative return indicates failure.
set n [CkFtp2_GetDirCount $ftp]
if {$n < 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

for {set i 0} {$i <= [expr $n - 1]} {incr i} {
    set name [CkFtp2_getFilename $ftp $i]

    #  GetSize returns -1 when the index is invalid or the size is unavailable (for example for a
    #  directory).  Use GetSize64 for files that may exceed 2 GB.
    set fileSize [CkFtp2_GetSize $ftp $i]
    puts "$name  $fileSize bytes"
}

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


delete_CkFtp2 $ftp