At 22:49 -0800 19/02/07, Bill Vlahos wrote:
I want to be able to have the user easily make a copy of the stack
they are working on as a way to backup the stack. This would be
something like "Save a Copy".
However, I don't want to change the active path of the stack. I
still want the stack they are working on to stay put and be the
working stack.
The following button script doesn't work and gives this error
Chunk: source is not a container
on mouseUp
answer folder "Select destination folder for backup: "
if it is not "Cancel" then
revCopyFile this stack, it
end if
end mouseUp
How can I make this work?
Bill Vlahos
Bill , this should work better and ensure that backup works
regardless whether the button is in a mainstack or substack:
on mouseUp
answer folder "Select destination folder for backup: "
if the result is "Cancel" then exit mouseUp
revCopyFile (the effective fileName of this stack), it
end mouseUp
Note that button clicked is returned in the result not in it.
If you want to ensure that the working directory is not changed add:
on mouseUp
answer folder "Select destination folder for backup: "
if the result is "Cancel" then exit mouseUp
put the defaultFolder into d
revCopyFile (the effective fileName of this stack), it
set the defaultFolder to d
end mouseUp
I'd actually save the backup folder location, so it is asked only
when it is not set or when user holds the option/alt key down. It
quickly becomes boring to have to choose backup folder each time
unless backup is done sporadically only.
on mouseUp
if the backupFolderPath of me is empty or the optionKey is down then
answer folder "Select destination folder for backup:"
if the result is "Cancel" then exit mouseUp
set the backupFolderPath of me to it
else
get the backupFolderPath of me
end if
revCopyFile (the effective fileName of this stack), it
save this stack
end mouseUp
Another variation is to hold the shift key down to first save the
stack. It can also be reversed, not saving when the key is held.
Personally, I like to be able to backup without saving the stack in
memory. It happens often enough that I start making changes and then
realize that I may want to roll them back and, of course, I forgot to
create a backup.
on mouseUp
answer folder "Select destination folder for backup: "
if the result is "Cancel" then exit mouseUp
if the shiftKey is down then save this stack
revCopyFile (the effective fileName of this stack), it
end mouseUp
Finally, since a folder can contain only a single copy of a file with
the same name and you want to keep a single backup, you'd need to
delete the previous file.
on mouseUp
answer folder "Select destination folder for backup: "
if the result is "Cancel" then exit mouseUp
if there is a file it then delete file it
revCopyFile (the effective fileName of this stack), it
end mouseUp
However, having multiple backup files from the way project develops
is often desired. This makes the script a tad more complicated as you
need to keep track of the last backup number and insert it into the
filename.
on mouseUp
if the backupFolderPath of me is empty or the optionKey is down then
answer folder "Select destination folder for backup: "
if the result is "Cancel" then exit mouseUp
if the backupFolderPath of me is not it then put set the
backupNumber of me to "0"
set the backupFolderPath of me to it
else
get the backupFolderPath of me
end if
put (the backupNumber of me)+1 into b
put the number of chars of it into p
repeat with i=p down to 1
if char i of it is "." then
put i into p
exit repeat
end if
end repeat
put "-" & (char 1 to (4-length(b)) of "00000") & b into bb
if p is the number of chars of it then
put bb after it
else
put bb before char p of it
end if
if there is a file it then delete file it -- should check for errors
if the shiftKey is down then save this stack
revCopyFile (the effective fileName of this stack), it
if the result is empty then
set the backupNumber of me to b
else
answer error "Error backing up:" && result()
end if
save this stack -- need to preserve backup path and counter
end mouseUp
This handler assumes an OS that allows long file names. It inserts a
4-digit serial number before prefix. The counter is reset if a new
backup folder is selected.
If your button is in a stack that users of your program will use, you
may of course let them decide which of these options are active.
Robert
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