I'm in the process of writing a small utility in Ruby to convert files in one
format to a different format.
Eventually it would be nice to to have the utility incorporate all or most of
the command line functionality and options of a command like cp, mv, or ln
(with suitable variations). For example, it would be nice to invoke it in
any of 3 forms, like:
I'm in the process of writing a small utility in Ruby to convert files in one
format to a different format.
Eventually it would be nice to to have the utility incorporate all or most of
the command line functionality and options of a command like cp, mv, or ln
(with suitable variations). For example, it would be nice to invoke it in
any of 3 forms, like:
Thanks! You've answered the question I asked, but not the question I really
intended to ask ;-), although your answer may be helpful anyway.
What I'm really looking for is a gem, library, class, or even just another
utility written in Ruby (that I could use as a template) that processes
command line parameters in a fashion like some typical *nix utilities (like
maybe cp, ln, mv, ...).
In other words, if I found such a utility written in Ruby, I'd think about
leaving the "framework" that processes the command line parameters (like
--help (-h), --force (-f), --interactive (-i), --backup and stripping out the
code that performs the function of that utility, substituting the
functionality I need. (And changing the actions for the various command line
parameters as appropriate.)
The code is probably not that hard to write, I just thought that if somebody
had already written it, I could save some time and effort (assuming there
were no licensing or copyright issues).
Randy Kramer
···
On Sunday 14 October 2007 07:22 pm, ara.t.howard wrote:
On Oct 14, 2007, at 1:43 PM, Randy Kramer wrote:
> I'm in the process of writing a small utility in Ruby to convert
> files in one
> format to a different format.
>
> Eventually it would be nice to to have the utility incorporate all
> or most of
> the command line functionality and options of a command like cp,
> mv, or ln
> (with suitable variations). For example, it would be nice to
> invoke it in
> any of 3 forms, like:
>
> cp [OPTION]... SOURCE DEST
> cp [OPTION]... SOURCE... DIRECTORY
> cp [OPTION]... --target-directory=DIRECTORY SOURCE...
>
> and to use many of the options available to cp like help, backup,
> force,
> interactive, ...
>
> Is there a Ruby gem, library, class, or whatever that implements
> some or all
> of that functionality?
>
> Randy Kramer
In other words, if I found such a utility written in Ruby, I'd think about
leaving the "framework" that processes the command line parameters (like
--help (-h), --force (-f), --interactive (-i), --backup and stripping out the
code that performs the function of that utility, substituting the
functionality I need. (And changing the actions for the various command line
parameters as appropriate.)
You're looking for optparse. I guess it's not a gem but part of the
standard library.
And looking it up in the pickaxe(2) also leads me to GetoptLong so there
appear to be at least two options--now (or soon) I'll have to spend a little
time deciding which is most useful to me. (A nice problem to have
Randy Kramer
···
On Monday 15 October 2007 10:12 am, mortee wrote:
You're looking for optparse. I guess it's not a gem but part of the
standard library.
