ftplib callbacks

[Matija Papec]

I would like to reimplement ftplib "nlst" using ftplib.dir (ftp server
doesn't support nlst) so I'm trying to guess how to use ftp callbacks.
Any help is appreciated.
tia!

============
#!/usr/bin/python

# nlst vs list

import pprint
pp = pprint.PrettyPrinter(indent=4)

import ftplib

def myfilter(line):
return line

ftp = ftplib.FTP("localhost")
ftp.login("mpapec", "island88")
#print ftp.retrlines("LIST")
dir = ftp.dir("", myfilter)
print dir
--
Matija

[Steve Holden]

Matija Papec wrote:

I would like to reimplement ftplib "nlst" using ftplib.dir (ftp server
doesn't support nlst) so I'm trying to guess how to use ftp callbacks.
Any help is appreciated.
tia!

============
#!/usr/bin/python

# nlst vs list

import pprint
pp = pprint.PrettyPrinter(indent=4)

import ftplib

def myfilter(line):
return line

ftp = ftplib.FTP("localhost")
ftp.login("mpapec", "island88")
#print ftp.retrlines("LIST")
dir = ftp.dir("", myfilter)
print dir

The callback is called each time the FTP client softwrae has something
to deal with. Try (untested):

lines = []

def myfilter(line):
global lines
lines.append(line)

with the remainder of your code unchanged. The lines list will then
contain a list of all lines.

The problem with your current callback is that its return value is
ignored by the FTP module that calls it.

regards
Steve
--
http://www.holdenweb.com
http://pydish.holdenweb.com
Holden Web LLC [phone]

[Matija Papec]

X-Ftn-To: Steve Holden

Steve Holden <st***@holdenweb.com> wrote:

The callback is called each time the FTP client softwrae has something
to deal with. Try (untested):

lines = []

def myfilter(line):
global lines
lines.append(line)

with the remainder of your code unchanged. The lines list will then
contain a list of all lines.
Tnx, I did

def nlst2(self, *args):
cmd = 'LIST'
for arg in args:
cmd = cmd + (' ' + arg)
files = []
self.retrlines(cmd, files.append)
return files

and now I just need to parse it. :)
The problem with your current callback is that its return value is
ignored by the FTP module that calls it.

Yes, unfortunately even "def retrlines" returns something uninteresting.

--
Matija