Optparse "invalid option" problem

Ruby
1

Hi,

‘optparse’ seems to continue parsing even after the first invalid
argument.

example.rb:

require ‘optparse’

ARGV.options do |opts|
opts.separator “Required:”
opts.on("-f", “–ffmpeg PATH”, String, “ffmpeg’s path”) { |val|
ffmpeg = val }
end

leftOver = ARGV.parse!
p leftOver

example.rb -f ./ffmpeg Tool/to/call/from/example.rb

works as expected (leftOver contains “Tool/to/call/from/example.rb”),
but

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

raises “invalid option: --toolsOption”

instead of pushing “Tool/to/call/from/example.rb”, “–toolsOption”
and “value” into leftOver

Is there a way to tell optparse that everything after the first
unknown argument is ignored and pushed into the resulting array?

Thanks!

Michael

2

Michael K. wrote:

Hi,

Hello,

= val }

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

raises “invalid option: --toolsOption”

instead of pushing “Tool/to/call/from/example.rb”, “–toolsOption” and
“value” into leftOver

That’s how it’s supposed to work: you can catch the error, or …

Is there a way to tell optparse that everything after the first unknown
argument is ignored and pushed into the resulting array?

Not automatically, but you can try:

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

=> [“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”

=> [“Tool/to/call/from/example.rb --toolsOption value”]

HTH,

t.

3

Hi tony,

if I use order!() instead of parse!() then it works the way I need

I took a look in optparse.rb (that’s why i love open source :slight_smile: :

def parse!(argv = ARGV)
if ENV.include?(‘POSIXLY_CORRECT’)
order!(argv)
else
permute!(argv)
end
end

and POSIXLY_CORRECT’ is not set on my system…

Thanks for your help.

Michael

4

On May 30, 2006, at 12:29 PM, Michael K. wrote:

  permute!(argv)

And here’s how I did it, not bothering to look at the source

( warning: Excessive sillyness follows)

% cat oparse.rb
args = ARGV.dup
cc = callcc { |x| x }
begin
old_verbose = $VERBOSE
$VERBOSE = nil
require ‘optparse’
ensure
$VERBOSE = old_verbose
end

ARGV.options do |opts|
opts.separator “Required:”
opts.on("-f", “–ffmpeg PATH”, String, “ffmpeg’s path”) { |val|
ffmpeg = val }
end

begin
leftOver = ARGV.parse!
rescue OptionParser::InvalidOption => ex
i = nil
args.each_with_index do |v, idx|
if v == ex.args.first
i = idx
break
end
end

args.insert(i, “–”)
begin
old_verbose = $VERBOSE
$VERBOSE = nil
ARGV = args
ensure
$VERBOSE = old_verbose
end
$LOADED_FEATURES.delete(‘optparse.rb’)
cc.call
end

p leftOver

% ruby oparse.rb
[“Tool/to/call/from/example.rb”, “–toolsOption”, “value”]

5

Hi,

At Wed, 31 May 2006 01:03:56 +0900,
Anton ‘tony’ Bangratz wrote in [ruby-talk:195197]:

“value” into leftOver
optparse has two modes, permutation and in-order. It is
permutation mode by default, and in-order mode if the
environment variable POSIXLY_CORRECT is set.

Is there a way to tell optparse that everything after the first unknown
argument is ignored and pushed into the resulting array?

ARGV.order!