Add a RedCloth::EXTENSION_LANGUAGE constant. [#114 state:resolved]

CHANGELOG

@@ -1,5 +1,7 @@
 === Edge
 
+* Added a RedCloth::EXTENSION_LANGUAGE constant so you can tell what version of the parser you are using. [Jason Garber]
+
 * Added a NotCompiledError to give a friendlier message when people just unpack RedCloth into their projects. [Jason Garber]
 
 * Added a pure-ruby version of the parser for times when you can't compile the C or Java extensions.  You should avoid using it if at all possible because it is 32 times slower (and has some other problems, too)! [Jason Garber]

ext/redcloth_scan/redcloth_scan.c.rl

@@ -214,6 +214,7 @@ redcloth_to(self, formatter)
 void Init_redcloth_scan()
 {
   mRedCloth = rb_define_module("RedCloth");
+  rb_define_const( mRedCloth, "EXTENSION_LANGUAGE", STR_NEW2("C") );
   /* A Textile document that can be converted to other formats. See
    the README for Textile syntax. */
   super_RedCloth = rb_define_class_under(mRedCloth, "TextileDoc", rb_cString);

ext/redcloth_scan/redcloth_scan.java.rl

@@ -589,6 +589,7 @@ public class RedclothScanService implements BasicLibraryService {
 
   public static void Init_redcloth_scan(Ruby runtime) {
     RubyModule mRedCloth = runtime.defineModule("RedCloth");
+    mRedCloth.defineConstant("EXTENSION_LANGUAGE", runtime.newString("Java"));
     RubyClass super_RedCloth = mRedCloth.defineClassUnder("TextileDoc", runtime.getString(), runtime.getString().getAllocator());
     super_RedCloth.defineAnnotatedMethods(RedclothScanService.class);
     super_RedCloth.defineClassUnder("ParseError",runtime.getClass("Exception"),runtime.getClass("Exception").getAllocator());

ext/redcloth_scan/redcloth_scan.rb.rl

@@ -17,6 +17,8 @@
 }%%
 
 module RedCloth
+  EXTENSION_LANGUAGE = "Ruby"
+
   class TextileDoc < String
     def to(formatter)
       self.delete!("\r")

lib/redcloth.rb

@@ -14,7 +14,7 @@ class NotCompiledError < LoadError; end
 begin
   require 'redcloth_scan'
 rescue LoadError
-  raise RedCloth::NotCompiledError, "RedCloth is extremely fast but must be compiled first. Installing the RedCloth gem is the easiest method."
+  raise RedCloth::NotCompiledError, "RedCloth uses native extensions. It's extremely fast but must be compiled. Installing the RedCloth gem is the easiest method."
 end
 require 'redcloth/version'
 require 'redcloth/textile_doc'

lib/redcloth/version.rb

@@ -24,5 +24,5 @@ def ==(arg)
   GEM_NAME = NAME
   URL  = "http://redcloth.org/"
 
-  DESCRIPTION = "#{NAME}-#{VERSION::FULL_VERSION} - Textile parser for Ruby.\n#{URL}"
+  DESCRIPTION = "#{NAME}-#{VERSION::FULL_VERSION}-#{EXTENSION_LANGUAGE} - Textile parser for Ruby.\n#{URL}"
 end

test/test_parser.rb

@@ -20,6 +20,12 @@ def test_redcloth_version_to_s
     assert RedCloth::VERSION == RedCloth::VERSION::STRING
   end
 
+  def test_redcloth_has_extension_language
+    assert RedCloth.const_defined?("EXTENSION_LANGUAGE")
+    assert ! RedCloth::EXTENSION_LANGUAGE.empty?
+    assert_match(RedCloth::EXTENSION_LANGUAGE, RedCloth::DESCRIPTION)
+  end
+
   def test_badly_formatted_table_does_not_segfault
     assert_match(/td/, RedCloth.new(%Q{| one | two |\nthree | four |}).to_html)
   end