add valid methods

lib/barby/barcode/bookland.rb

@@ -16,6 +16,7 @@ module Barby
   #
   # If a prefix is not given, a default of 978 is used.
   class Bookland < EAN13
+    attr_accessor :isbn
 
     # isbn should be an ISBN number string, with or without an EAN prefix and an ISBN checksum
     # non-number formatting like hyphens or spaces are ignored
@@ -61,12 +62,11 @@ def initialize(isbn)
 
 
       def isbn=(isbn)
-        if match = PATTERN.match(isbn.gsub(/\D/, ''))
-          @number = match[:number]
-          @prefix = match[:prefix]
-        else
-          raise ArgumentError, "Not a valid ISBN: #{isbn}"
-        end
+        raise ArgumentError, "Not a valid ISBN: #{isbn}" if valid?
+
+        match = PATTERN.match(isbn.gsub(/\D/, ''))
+        @number = match[:number]
+        @prefix = match[:prefix]
       end
 
       def isbn
@@ -135,9 +135,15 @@ def inspect
         "#<#{self.class}:0x#{'%014x' % object_id} #{formatted_isbn}>"
       end
 
+      def valid?
+        !!PATTERN.match(isbn.gsub(/\D/, ''))
+      end
 
     end#class ISBN
 
+    def valid?
+      !!ISBN::PATTERN.match(isbn.gsub(/\D/, ''))
+    end
 
   end#class Bookland
 

lib/barby/barcode/code_25_iata.rb

@@ -18,6 +18,10 @@ def stop_encoding
       encoding_for_bars_without_end_space(STOP_ENCODING)
     end
 
+    def valid?
+      !!data
+    end
+
   end
 
 end

lib/barby/barcode/data_matrix.rb

@@ -41,6 +41,9 @@ def to_s
     end
 
 
+    def valid?
+      !!data
+    end
   end
 
 end

lib/barby/barcode/gs1_128.rb

@@ -39,7 +39,6 @@ def to_s
       "(#{application_identifier}) #{partial_data}"
     end
 
-
   end
 
 

lib/barby/barcode/pdf_417.rb

@@ -5,6 +5,8 @@
 
 module Barby
   class Pdf417 < Barcode2D
+    attr_reader :data
+
     DEFAULT_OPTIONS = {
       :options       => 0,
       :y_height      => 3,
@@ -72,5 +74,9 @@ def encoding
       end
       enc
     end
+
+    def valid?
+      !!data
+    end
   end
 end

lib/barby/barcode/qr_code.rb

@@ -88,6 +88,10 @@ def to_s
     end
 
 
+    def valid?
+      !!data
+    end
+
   private
 
     #Generate an RQRCode object with the available values

test/code_25_iata_test.rb

@@ -16,4 +16,7 @@ class Code25IATATest < Barby::TestCase
     @code.stop_encoding.must_equal '11101'
   end
 
+  it "should be valid" do
+    @code.valid?.must_equal true
+  end
 end

test/data_matrix_test.rb

@@ -27,4 +27,7 @@ class DataMatrixTest < Barby::TestCase
     @code.encoding.wont_equal prev_encoding
   end
 
+  it "should be valid" do
+    @code.valid?.must_equal true
+  end
 end

test/pdf_417_test.rb

@@ -40,6 +40,10 @@ class Pdf417Test < Barby::TestCase
       enc[0].length.must_equal 117
     end
 
+    it "should be valid" do
+      @code.valid?.must_equal true
+    end
+
   end
 
 end

test/qr_code_test.rb

@@ -68,7 +68,10 @@ class QrCodeTest < Barby::TestCase
     QrCode.new('123456789012345678901234567890').to_s.must_equal '12345678901234567890'
   end
 
-
+  it "should be valid" do
+    @code.valid?.must_equal true
+  end
+
   private
 
   def rqrcode(code)