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Diffstat (limited to 'ruby_1_8_6/lib/shellwords.rb')
| -rw-r--r-- | ruby_1_8_6/lib/shellwords.rb | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/ruby_1_8_6/lib/shellwords.rb b/ruby_1_8_6/lib/shellwords.rb new file mode 100644 index 0000000000..e87b9e656b --- /dev/null +++ b/ruby_1_8_6/lib/shellwords.rb @@ -0,0 +1,60 @@ +# +# shellwords.rb: Split text into an array of tokens a la UNIX shell +# + +# +# 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) +# +module Shellwords + + # + # Split text into an array of tokens in the same way the UNIX Bourne + # shell does. + # + # See the +Shellwords+ module documentation for an example. + # + def shellwords(line) + line = String.new(line) rescue + raise(ArgumentError, "Argument must be a string") + line.lstrip! + words = [] + until line.empty? + field = '' + loop do + if line.sub!(/\A"(([^"\\]|\\.)*)"/, '') then + snippet = $1.gsub(/\\(.)/, '\1') + elsif line =~ /\A"/ then + raise ArgumentError, "Unmatched double quote: #{line}" + elsif line.sub!(/\A'([^']*)'/, '') then + snippet = $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.lstrip! + break + end + field.concat(snippet) + end + words.push(field) + end + words + end + + module_function :shellwords +end |