I'm currently building a simple program which will read and write file on standard output. I want to launch my program this way : ruby main.rb -f file1 file2 file3 ...
But with optParse I cannot get this to work I must include separator .. I need optParse because I handle multiple options (like verbose, help ...). So if I do this : ruby main.rb -f file1,file2 ... It works
How can I achieve this ?
Thanks !
If you don't have option parameters you pass or if all other parameters are optional, you can just pass the files the old-fashioned way: via ARGV. By default, command line options are separated by spaces, not commas.
If you absolutely need to support the -f option, you could add support for ARGV in addition
require "optparse"
options = {
:files => []
}
opt_parse = OptionParser.new do |opts|
opts.banner = "Usage: main.rb file(s) ..."
opts.on("-f", "--files file1,file2,...", Array, "File(s)") do |f|
options[:files] += f
end
opts.on_tail("-h", "--help", "Show this message") do
puts opts
exit
end
end
opt_parse.parse!
options[:files] += ARGV
if options[:files].length == 0
abort(opt_parse.help)
end
puts options[:files]
Using this method, you can even mix both styles:
$ main.rb -f -f file1,file2 file3 -f file4 file5
file1
file2
file4
file3
file5
(Note file5 is really being passed via ARGV, but it kinda looks like you are using a space as a separator.)