Dispatching a function based on a message

[Edgardo Hames]

I'm back writing my small network app (IM client) and I need to
dispatch functions based on the messages received from the server. For
example, if my app gets a string like

MSG msg_number som_other_text

it should call the function process_MSG and pass some_other_text as an argument.

How can I do that? I was thinking of a big case statement, but I'm not
sure that's the Ruby Way. Probably a hash with MSGs as keys and
process_MSGs as values?

Thanks for your ideas,
Ed

 

[Mark Sparshatt]

I'm back writing my small network app (IM client)
and I need to
dispatch functions based on the messages received
from the server. For
example, if my app gets a string like

MSG msg_number som_other_text

it should call the function process_MSG and pass
some_other_text as an argument.

How can I do that? I was thinking of a big case
statement, but I'm not
sure that's the Ruby Way. Probably a hash with MSGs
as keys and
process_MSGs as values?

You could try using the send method

class MyClass
def process_MSG(val)
#do something
end
end

if you've split the message up into the variables msg,
msg_number, other_text then you'd just need to do

processor = MyClass.new
processor.send("process_#{msg), other_text)

HTH

--
Mark Sparshatt








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[Robert Klemme]

You could try using the send method

class MyClass
def process_MSG(val)
#do something
end
end

if you've split the message up into the variables msg,
msg_number, other_text then you'd just need to do

processor = MyClass.new
processor.send("process_#{msg), other_text)

HTH

We can even wrap that:

class MyClass
def process_MSG(val) ... end

def receive(line)
if /\A(\S+)\s+\d+\s+(.*)\Z/ =~ line
send($1,$2)
end
end
end

Kind regards

robert