add tag v1_8_6_5001v1_8_6_5001

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_8_6_5001@13304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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