From: Anton 'tony' Bangratz <tony@...>
Date: 2006-05-31T01:03:56+09:00
Subject: Re: optparse "invalid option" problem

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Michael Keller wrote:
> Hi,

Hello,

>=20
> 'optparse' seems to continue parsing even after the first invalid argum=
ent.
>=20
> example.rb:
>=20
> require 'optparse'
>=20
> ARGV.options do |opts|
>   opts.separator  "Required:"
>   opts.on("-f", "--ffmpeg PATH", String, "ffmpeg's path") { |val| ffmpe=
g
> =3D val }
> end
>=20
> leftOver =3D ARGV.parse!
> p leftOver
>=20
>=20
>=20
>> example.rb -f ./ffmpeg Tool/to/call/from/example.rb
>=20
> works as expected (leftOver contains "Tool/to/call/from/example.rb"), b=
ut
>=20
>=20
>> example.rb -f ./ffmpeg Tool/to/call/from/example.rb --toolsOption valu=
e
>=20
> raises "invalid option: --toolsOption"
>=20
> instead of pushing "Tool/to/call/from/example.rb", "--toolsOption" and
> "value" into leftOver
>=20

That's how it's supposed to work: you can catch the error, or ...

>=20
>=20
> Is there a way to tell optparse that everything after the first unknown=

> argument is ignored and pushed into the resulting array?
>=20


Not automatically, but you can try:

example.rb -f ./ffmpeg Tool/to/call/from/example.rb -- --toolsOption\ val=
ue

=3D> ["Tool/to/call/from/example.rb", "--toolsOption", "value"]

or you can quote the argument as a whole and split it later:


example.rb -f ./ffmpeg Tool/to/call/from/example.rb "--toolsOption\ value=
"

=3D> ["Tool/to/call/from/example.rb  --toolsOption value"]

HTH,

t.

--=20
Anton Bangratz - Key ID 363474D1 - http://tony.twincode.net/
fortune(6):
It would save me a lot of time if you just gave up and went mad now.


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