I am trying to convert ruby/lib/un.rb at master · ruby/ruby · GitHub to a similar type of file in ruby. It uses caller_locations to find who called it. Is a similar function available in Crystal?
Here’s the relevant code
def setup(options = '', *long_options)
caller = caller_locations(1, 1)[0].label
opt_hash = {}
argv = []
OptionParser.new do |o|
options.scan(/.:?/) do |s|
opt_name = s.delete(':').intern
o.on('-' + s.tr(':', ' ')) do |val|
opt_hash[opt_name] = val
end
end
long_options.each do |s|
opt_name, arg_name = s.split(/(?=[\s=])/, 2)
opt_name.delete_prefix!('--')
s = "--#{opt_name.gsub(/([A-Z]+|[a-z])([A-Z])/, '\1-\2').downcase}#{arg_name}"
puts "#{opt_name}=>#{s}" if $DEBUG
opt_name = opt_name.intern
o.on(s) do |val|
opt_hash[opt_name] = val
end
end
o.on('-v') { opt_hash[:verbose] = true }
o.on('--help') do
UN.help([caller])
exit
end
o.order!(ARGV) do |x|
if /[*?\[{]/ =~ x
argv.concat(Dir[x])
else
argv << x
end
end
end
yield argv, opt_hash
end