string.rb in rahoulb-rujitsu-0.1.8

- old
+ new

@@ -1,6 +1,26 @@
 class String
 	# Return a string that can be used as part of a url
+	# replaces basic "bad" characters with "-"
 	def to_url
 		self.downcase.gsub(/[^\-0-9a-z ]/, '').split.join('-')
 	end
+	
+	# Truncates a string to the specified length,
+	# and appends suffix if required
+	# 
+	# Options:
+	# * +length+ length to truncate string to. Includes the suffix in the length. Default is 50.
+	# * +suffix+ suffix to append to truncated string. Pass "" or false for no suffix. Default is "...".
+	# 
+	def truncate opts = {}
+	  opts[:length] ||= 50
+	  opts[:suffix] = opts.has_key?(:suffix) ? opts[:suffix] : "..."
+	  opts[:suffix] ||= ""
+    opts[:length] -= (opts[:suffix].length+1)
+    if opts[:length] > 0
+      self.length > opts[:length] ? self[0..opts[:length]] + opts[:suffix] : self
+    else
+      opts[:suffix][0..(opts[:length] += opts[:suffix].length)]
+    end
+  end
 end