Add support for dark mode.

Also drop old rubies.

Closes #45

.travis.yml

@@ -3,9 +3,7 @@ before_install:
   - gem install bundler -v '< 2'
 language: ruby
 rvm:
-  - 2.3.8
-  - 2.4.10
-  - 2.5.8
-  - 2.6.6
-  - 2.7.2
-  - 3.0.0
+  - 2.7.8
+  - 3.0.6
+  - 3.1.4
+  - 3.2.2

README.md

@@ -49,7 +49,7 @@ It is a requirement that your template file contain a placeholder
 for the syntax highlighting code to be placed.  In order to do this,
 open up your default.tpl (or whatever your template file is called)
 and ensure that before the closing </head> tag you put
-`%pygments%`
+`%pygments%`.  You also have the option to put `%dark_pygments%` if you want to have "dark mode" syntax highlighting.
 
 A sample tpl file is available here https://raw.githubusercontent.com/patrickdavey/vimwiki_markdown/master/example_files/default.tpl
 

changelog.md

@@ -1,3 +1,6 @@
+## 0.9.0 [02 April 2023]
+Add support for dark mode. Drop support for ruby < 2.7
+
 ## 0.8.2 [22 June 2022]
 Remove deprecation warning for EscapeUtils.escape_html
 see https://github.com/patrickdavey/vimwiki_markdown/pull/43

lib/vimwiki_markdown/template.rb

@@ -33,7 +33,8 @@ def fixtags(template)
     end
 
     def pygments_wrapped_in_tags
-      Rouge::Themes::Github.dark!
+      Rouge::Themes::Github.dark! if dark_template?
+
       "<style type=\"text/css\">
         #{::Rouge::Themes::Github.render(scope: '.highlight')}
       </style>"
@@ -48,7 +49,17 @@ def title
     end
 
     def validate_template
-      raise MissingRequiredParamError.new("ERROR: vimwiki template must contain %pygments% placeholder token.  Please visit https://github.com/patrickdavey/vimwiki_markdown for more information") unless @template =~ /%pygments%/
+      return if dark_template? || regular_template?
+
+      raise MissingRequiredParamError.new("ERROR: vimwiki template must contain %pygments% placeholder token.  Please visit https://github.com/patrickdavey/vimwiki_markdown for more information")
+    end
+
+    def dark_template?
+      @template =~ /%dark_pygments%/
+    end
+
+    def regular_template?
+      @template =~ /%pygments%/
     end
   end
 end

lib/vimwiki_markdown/version.rb

@@ -1,3 +1,3 @@
 module VimwikiMarkdown
-  VERSION = "0.8.2"
+  VERSION = "0.9.0"
 end

spec/lib/vimwiki_markdown/template_spec.rb

@@ -32,6 +32,18 @@ module VimwikiMarkdown
       end
     end
 
+    context "dark pygments" do
+      before do
+        allow(Options).to receive(:arguments).and_return(Options::DEFAULTS)
+      end
+
+      it "should raise an invalid exception for missing pygments" do
+        allow(File).to receive(:open).with(options.template_filename, "r").and_return(StringIO.new(dark_pygments))
+        expect(Rouge::Themes::Github).to receive(:dark!) { true }
+        Template.new(options).to_s
+      end
+    end
+
     context "using %root_path%" do
       before do
         allow(Options).to receive(:arguments).and_return(Options::DEFAULTS)

spec/spec_helper.rb

@@ -184,5 +184,9 @@ def wiki_template
 end
 
 def template_missing_pygments
-  wiki_template.gsub!('%pygments%','')
+  wiki_template.gsub!("%pygments%", "")
+end
+
+def dark_pygments
+  wiki_template.gsub!("%pygments%", "%dark_pygments%")
 end