Initial import

app/helpers/wiki_helper.rb

@@ -0,0 +1,48 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+module WikiHelper
+
+	def format_diff(text)
+		last = 0
+		result = ""
+		text << "\n"
+		style = { '+' => 'add', '-' => 'del', ' ' => 'line' }
+
+		text.each do |line|
+			# Ignora o cabecalho
+			next if line.match(/^---/)
+			next if line.match(/^\+\+\+/)
+
+			# Divisao entre pedacos
+			if line[0].chr == '@'
+				result << "<tr><td class='diff_space diff_border_#{style[last.chr]}' ></td></tr>"
+				last = 0
+			else
+				# Verifica se mudou de contexto (add para del, linha normal para add, etc)
+				if line[0] != last
+					last = line[0] if last == 0 or line[0].chr == '+' or line[0].chr == '-'
+					result << "<tr><td class='diff_border_#{style[last.chr]} "
+					last = line[0]
+
+				else
+					result << "<tr><td class='"
+				end
+				result << "diff_#{style[line[0].chr]}'>" +
+						" #{line[1..-1]}&nbsp;</td></td>"
+			end
+		end
+		
+		return "<table class='diff'>#{result}</table>"
+	end
+end