util.rb in Sutto-marvin-0.2.0

- old
+ new

@@ -1,8 +1,15 @@
 module Marvin
   module Util
       
+      GLOB_PATTERN_MAP = {
+        '*' => '.*',
+        '?' => '.',
+        '[' => '[',
+        ']' => ']'
+      }
+      
       # Return the channel-name version of a string by
       # appending "#" to the front if it doesn't already
       # start with it.
       def channel_name(name)
         return name.to_s[0..0] == "#" ? name.to_s : "##{name}"
@@ -18,12 +25,22 @@
 
       # Specifies the last parameter of a response, used to
       # specify parameters which have spaces etc (for example,
       # the actual message part of a response).
       def last_param(section)
-        section && ":#{section.to_s.strip} "
+        section && ":#{section.to_s.strip}"
       end
       alias lp last_param
+      
+      # Converts a glob-like pattern into a regular
+      # expression for easy / fast matching. Code is
+      # from PLEAC at http://pleac.sourceforge.net/pleac_ruby/patternmatching.html
+      def glob2pattern(glob_string)
+          inner_pattern = glob_string.gsub(/(.)/) do |c|
+            GLOB_PATTERN_MAP[c] || Regexp::escape(c)
+          end
+        return Regexp.new("^#{inner_pattern}$")
+      end
      
       extend self
      
   end
 end
\ No newline at end of file