go to top

[Nakia]

Hi,

I have a handler that treis to download a file from a FTP server and I want to add the ability for said handler to try the download 3 times.
So I thought I would just log each failure into a local variable and if that number was <= 3 go to the top of the handler.

But no luck, the go top does not seem to work

Code: Select all

if tUpdatedFile = empty then
  add 1 to lRetries
if lRetries <= 3 then
  go to top
answer lRetries
end if 
end if

[Simon]

Hi Nakia,
How about:

Code: Select all

repeat 3 
libURLDownloadToFile "ftp://example.org/new_beta",it
if the result = empty then exit repeat
end repeat

Simon
EDIT: I should have pointed out that "if the result = empty" means that the download was successful so stop trying.

[Klaus]

Hi Nakia,

the correct syntax is:
...
exit to top
## Will stop and leave ANY handler and function!
...
exit NameOfHandler
## As Simon said, this will leave the current REPEAT Loop and or handler
## exit mouseup etc...
...

Best

Klaus

[shaosean]

There is a slight difference between exit to top and exit handlerName.. Lets say you had the following code in a button

Code: Select all

on mouseUp
  moo
  oink
end mouseUp

on moo
  # do something
  # this is where the exit commands are placeed
  cow
  # do something else
end moo

on oink
  # do more stuff
end oink

on cow
  # more stuffs
end cow

When you click on the button it runs the commands in the following order:
mouseUp
moo
cow
oink

If you place exit moo before the cow line in the moo handler, the commands run in this order:
mouseUp
moo
oink
So you can see that exit handlerName will just leave the current handler back up the message path and continue with any handlers after the one you exited..

If you place exit to top before the cow line in the moo handler, the commands run in this order
mouseUp
moo
All further processing is halted

[Klaus]

Sean, did you grow up on a farm?

[shaosean]

Nope.. Why do you ask?

[Simon]

Hi shaosean,
Are you the same shaosean of the SMTP library and externals fame?

Simon

[shaosean]

Not certain about fame, but otherwise, yuppers..

[Simon]

Wicked cool!

[shaosean]

If you say so, but Klaus is much more famous (and infamous) than me..

[Klaus]

Nope.. Why do you ask?

Moo, cow, oink?

Just a thought