cli-parser

The cli-parser parse command-line arguments and returns the information. It respects flags/switches, arguments and (quoted) options.

gem install cli-parser

require 'cli-parser'

arguments, options = CliParser.parse(flags, opts, cmd)

• flags: An array of flags, like -w -i -s --debug. These are just switches and aren't followed with a value.
• opts: An array of options with arguments, like -t --style. These options should be followed with a value.
• cmd: A optional string of command-line arguments, like 'arg1 -f -a test arg2'. If none is given ARGV is used.

• arguments: An array of arguments
• options: A dict containing all flags and options

require 'cli-parser'

cli_flags = %w(-i -c -t)
cli_options = %w(-s, -a)
arguments, options = CliParse.parse(cli_flags, cli_options)

By default it parses the command-line options from ARGV, but the parser also accepts an optional third parameter, which contain all arguments as a string.

require 'cli-parser'

cmd = '-i arg1 -c -s Test -a "Hello World" arg2'
arguments, options = CliParser.parse(%w(-i -c -t), %w(-s -a), cmd)

puts arguments # ["arg1", "arg2"]
puts options # { '-i' => true, '-c' => true, '-s' => 'Test', 'a' => 'Hello World' }