1 files changed, 111 insertions, 0 deletions
diff --git a/trunk/lib/rss/utils.rb b/trunk/lib/rss/utils.rb
new file mode 100644
index 0000000000..0e4001e1f3
--- /dev/null
+++ b/trunk/lib/rss/utils.rb
@@ -0,0 +1,111 @@
+module RSS
+  module Utils
+    module_function
+
+    # Convert a name_with_underscores to CamelCase.
+    def to_class_name(name)
+      name.split(/[_\-]/).collect do |part|
+        "#{part[0, 1].upcase}#{part[1..-1]}"
+      end.join("")
+    end
+    
+    def get_file_and_line_from_caller(i=0)
+      file, line, = caller[i].split(':')
+      line = line.to_i
+      line += 1 if i.zero?
+      [file, line]
+    end
+
+    # escape '&', '"', '<' and '>' for use in HTML.
+    def html_escape(s)
+      s.to_s.gsub(/&/, "&amp;").gsub(/\"/, "&quot;").gsub(/>/, "&gt;").gsub(/</, "&lt;")
+    end
+    alias h html_escape
+    
+    # If +value+ is an instance of class +klass+, return it, else
+    # create a new instance of +klass+ with value +value+.
+    def new_with_value_if_need(klass, value)
+      if value.is_a?(klass)
+        value
+      else
+        klass.new(value)
+      end
+    end
+
+    def element_initialize_arguments?(args)
+      [true, false].include?(args[0]) and args[1].is_a?(Hash)
+    end
+
+    module YesCleanOther
+      module_function
+      def parse(value)
+        if [true, false, nil].include?(value)
+          value
+        else
+          case value.to_s
+          when /\Ayes\z/i
+            true
+          when /\Aclean\z/i
+            false
+          else
+            nil
+          end
+        end
+      end
+    end
+
+    module YesOther
+      module_function
+      def parse(value)
+        if [true, false].include?(value)
+          value
+        else
+          /\Ayes\z/i.match(value.to_s) ? true : false
+        end
+      end
+    end
+
+    module CSV
+      module_function
+      def parse(value, &block)
+        if value.is_a?(String)
+          value = value.strip.split(/\s*,\s*/)
+          value = value.collect(&block) if block_given?
+          value
+        else
+          value
+        end
+      end
+    end
+
+    module InheritedReader
+      def inherited_reader(constant_name)
+        base_class = inherited_base
+        result = base_class.const_get(constant_name)
+        found_base_class = false
+        ancestors.reverse_each do |klass|
+          if found_base_class
+            if klass.const_defined?(constant_name)
+              result = yield(result, klass.const_get(constant_name))
+            end
+          else
+            found_base_class = klass == base_class
+          end
+        end
+        result
+      end
+
+      def inherited_array_reader(constant_name)
+        inherited_reader(constant_name) do |result, current|
+          current + result
+        end
+      end
+
+      def inherited_hash_reader(constant_name)
+        inherited_reader(constant_name) do |result, current|
+          result.merge(current)
+        end
+      end
+    end
+  end
+end