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# shellwords.rb
# original is shellwords.pl
#
# Usage:
# require 'shellwords'
# words = Shellwords.shellwords(line)
#
# or
#
# require 'shellwords'
# include Shellwords
# words = shellwords(line)
module Shellwords
def shellwords(line)
unless line.kind_of?(String)
raise ArgumentError, "Argument must be String class object."
end
line = line.sub(/\A\s+/, '')
words = []
while line != ''
field = ''
while true
if line.sub!(/\A"(([^"\\]|\\.)*)"/, '') then #"
snippet = $1
snippet.gsub!(/\\(.)/, '\1')
elsif line =~ /\A"/ then #"
raise ArgumentError, "Unmatched double quote: #{line}"
elsif line.sub!(/\A'(([^'\\]|\\.)*)'/, '') then #'
snippet = $1
snippet.gsub!(/\\(.)/, '\1')
elsif line =~ /\A'/ then #'
raise ArgumentError, "Unmatched single quote: #{line}"
elsif line.sub!(/\A\\(.)/, '') then
snippet = $1
elsif line.sub!(/\A([^\s\\'"]+)/, '') then #'
snippet = $1
else
line.sub!(/\A\s+/, '')
break
end
field.concat(snippet)
end
words.push(field)
end
words
end
module_function :shellwords
end
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