Ruby optparse: Difference between revisions
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require 'optparse' | require 'optparse' | ||
options = | options = {} | ||
OptionParser.new do |opt| | |||
opt.on("-i", "--input FILE", "the input file") { |val| options[:input] = val } | opt.on("-i", "--input FILE", "the input file") { |val| options[:input] = val } | ||
opt.on("-o", "--output FILE", "the output file") { |val| options[:output] = val } | opt.on("-o", "--output FILE", "the output file") { |val| options[:output] = val } | ||
Revision as of 16:42, 12 October 2021
Optparse is a basic commandline parser for ruby.
It is builtin to the standard library.
require 'optparse'
options = {}
OptionParser.new do |opt|
opt.on("-i", "--input FILE", "the input file") { |val| options[:input] = val }
opt.on("-o", "--output FILE", "the output file") { |val| options[:output] = val }
end.parse!
return options if options.input && options.output
STDERR.puts "[ERROR] requires -i/-o"
exit(1)
