From: Logan Capaldo <logancapaldo@...>
Date: 2006-02-22T04:50:16+09:00
Subject: Re: Question about String.unpack

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On Feb 21, 2006, at 2:19 PM, Jacob Repp wrote:

> I'm curious about binary protocol parsing in ruby and have scratched
> around for some kind of BinaryReader-ish interface for strings. Seems
> like you could solve this if you know that your struct is in a string
> you could say:
>
> str = fd.sysread(n)
> name = str.read_str(30)
> size = str.read_double
> age = str.read_int
> stuff = str.read_c
>
> I was going to write a native extension to do this after I finish my
> current Ruby/AIO extension project. Unless there is something that
> does this already (maybe in a cleaner/more ruby-ish way?)

This is pretty much exactly what unpack does anyway., except its one  
method that uses a format string. If you wanted a more stream  
oriented wrapper around this, you certainly could write one fairly  
easily.

ri String#unpack


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