Initial revision

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@8 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/shellwords.rb b/lib/shellwords.rb
new file mode 100644
index 000000000..9632f1222
--- /dev/null
+++ b/lib/shellwords.rb
@@ -0,0 +1,48 @@
+# shellwords.rb
+# original is shellwords.pl
+#
+# Usage:
+#       require 'shellwords.rb'
+#       words = Shellwords.shellwords(line)
+#
+#	   or
+#
+#       include Shellwords
+#       words = shellwords(line)
+
+module Shellwords
+  def shellwords(line)
+    return '' unless line
+    line.sub! /^\s+/, ''
+    words = []
+    while line != ''
+      field = ''
+      while TRUE
+	if line.sub! /^"(([^"\\]|\\.)*)"/, '' then
+	  snippet = $1
+	  snippet.gsub! /\\(.)/, '\1'
+	elsif line =~ /^"/ then
+	  STDOUT.print "Unmatched double quote: $_\n"
+	  exit
+        elsif line.sub! /^'(([^'\\]|\\.)*)'/, '' then
+	  snippet = $1
+	  snippet.gsub! /\\(.)/, '\1'
+	elsif line =~ /^'/ then
+	  STDOUT.print "Unmatched single quote: $_\n"
+	  exit
+	elsif line.sub! /^\\(.)/, '' then
+	  snippet = $1
+	elsif line.sub! /^([^\s\\'"]+)/, '' then
+	  snippet = $1
+	else
+	  line.sub! /^\s+/, ''
+	  break
+	end
+	field += snippet
+      end
+      words += field
+    end
+    words
+  end
+  module_function :shellwords
+end