On Thu, Aug 12, 2010 at 09:19:52PM -0400, Kris Maglione wrote:
Yes... Unfortunately awk dies on SIGPIPE in that example, so it never
runs the END block. This slight variation should work:
wimenu -c <fifo | awk '
BEGIN {
# Define the completion results
cmds = "foo\nbar\nbaz\n"
cmd["foo"] = "1\n2\n3\n"
cmd["bar"] = "4\n5\n6\n"
cmd["baz"] = "7\n8\n9\n"
# Print the first set of completions to wimenu’s fifo
fifo = "fifo"
print cmds >fifo; fflush(fifo)
}
//
# Push out a new set of completions
function update(str, opts) {
print length(str) >fifo # Print the length of the preceding string
print opts >fifo # and the options themself
fflush(fifo)
}
# Ensure correct argument count with trailing spaces
/ $/ { $0 = $0 "#"; }
{ # Process the input and provide the completions
if (NF == 1)
update("", cmds) # The first arg, command choices
else
update($1 " ", cmd[$1]) # The second arg, command arguments
# Skip the trailing part of the command
getline rest
}
' | tail -1
Oh, but I notice that this doesn't work with gawk. You'll need
to replace the // line with { print; fllush() }. I'm afraid that
if you use mawk it's hopeless.
--
Kris Maglione
If you think your management doesn't know what it's doing or that your
organisation turns out low-quality software crap that embarrasses you,
then leave.
--Edward Yourdon
