Module Shellwords
In: lib/shellwords.rb

This module is originally a port of shellwords.pl, but modified to conform to POSIX / SUSv3 (IEEE Std 1003.1-2001).

Examples: 

  require 'shellwords'
  words = Shellwords.shellwords(line)

or 

  require 'shellwords'
  include Shellwords
  words = shellwords(line)

Methods

shellwords  

Public Instance methods

shellwords(line)

Split text into an array of tokens in the same way the UNIX Bourne shell does.

See the Shellwords module documentation for an example.

[Source]

    # File lib/shellwords.rb, line 28
28:   def shellwords(line)
29:     line = String.new(line) rescue
30:       raise(ArgumentError, "Argument must be a string")
31:     line.lstrip!
32:     words = []
33:     until line.empty?
34:       field = ''
35:       loop do
36:         if line.sub!(/\A"(([^"\\]|\\.)*)"/, '') then
37:           snippet = $1.gsub(/\\(.)/, '\1')
38:         elsif line =~ /\A"/ then
39:           raise ArgumentError, "Unmatched double quote: #{line}"
40:         elsif line.sub!(/\A'([^']*)'/, '') then
41:           snippet = $1
42:         elsif line =~ /\A'/ then
43:           raise ArgumentError, "Unmatched single quote: #{line}"
44:         elsif line.sub!(/\A\\(.)?/, '') then
45:           snippet = $1 || '\\'
46:         elsif line.sub!(/\A([^\s\\'"]+)/, '') then
47:           snippet = $1
48:         else
49:           line.lstrip!
50:           break
51:         end
52:         field.concat(snippet)
53:       end
54:       words.push(field)
55:     end
56:     words
57:   end

[Validate]