Read text field with multiple lines

Changes the way the parse field occurs,
so that we can read a pdf with text fields with multiple lines.

lib/pdf_forms/field.rb

@@ -11,22 +11,33 @@ class Field
     #
     # Represenation of a PDF Form Field
     def initialize(field_description)
+      previous_key = nil
       field_description.each_line do |line|
         case line
         when /FieldStateOption:\s*(.*?)\s*$/
           (@options ||= []) << $1
         else
           line.strip!
           key, value = line.split(": ", 2)
-          key.gsub!(/Field/, "")
-          key = key.split(/(?=[A-Z])/).map(&:downcase).join('_').split(":")[0]
-
-          instance_variable_set("@#{key}", value)
-
-          # dynamically add in fields that we didn't anticipate in ATTRS
-          unless self.respond_to?(key.to_sym)
-            proc = Proc.new { instance_variable_get("@#{key}".to_sym) }
-            self.class.send(:define_method, key.to_sym, proc)
+          if not key then key = "" end           # ignore key if line doesn't have a ': '
+          if key.gsub!(/Field/, "")
+            key = key.split(/(?=[A-Z])/).map(&:downcase).join('_').split(":")[0]
+
+            instance_variable_set("@#{key}", value)
+
+            # dynamically add in fields that we didn't anticipate in ATTRS
+            unless self.respond_to?(key.to_sym)
+              proc = Proc.new { instance_variable_get("@#{key}".to_sym) }
+              self.class.send(:define_method, key.to_sym, proc)
+            end
+            previous_key = key
+          else
+            # pdftk returns a line that doesn't start with "Field"
+            # It happens when a text field has multiple lines
+            key = previous_key
+            last_value = instance_variable_get("@#{key}")
+            new_value = last_value + "\n" + line # Linux line ending
+            instance_variable_set("@#{key}", new_value)
           end
         end
       end

test/field_test.rb

@@ -61,4 +61,25 @@ def test_field_values_with_colons
     assert_equal 'Date: most recent', f.name_alt
   end
 
+MULTILINE_TEXT_VALUE = <<-END
+1. First element of my list;
+2. Second element of my list;
+3. Third element of my list.
+
+This is my list.
+END
+MULTILINE_TEXT_FIELD = <<-END
+FieldType: Text
+FieldName: minhalista
+FieldFlags: 4096
+FieldValue: #{MULTILINE_TEXT_VALUE}
+FieldJustification: Left
+END
+
+  def test_text_field_with_multiple_lines
+    f = PdfForms::Field.new MULTILINE_TEXT_FIELD
+    assert_equal MULTILINE_TEXT_VALUE, f.value
+  end
+
+
 end