Add option to exclude specific directories

README.md

@@ -63,6 +63,17 @@ relative_links:
   collections: false
 ```
 
+### Excluding files
+
+To exclude specific directories and/or files:
+
+```yml
+relative_links:
+  exclude:
+    - directory
+    - file.md
+```
+
 ### Processing Collections
 
 Setting the `collections` option to `true` enables relative links from collection items (including posts).

lib/jekyll-relative-links/generator.rb

@@ -2,7 +2,7 @@
 
 module JekyllRelativeLinks
   class Generator < Jekyll::Generator
-    attr_accessor :site
+    attr_accessor :site, :config
 
     # Use Jekyll's native relative_url filter
     include Jekyll::Filters::URLFilters
@@ -16,26 +16,28 @@ class Generator < Jekyll::Generator
     CONFIG_KEY = "relative_links"
     ENABLED_KEY = "enabled"
     COLLECTIONS_KEY = "collections"
+    LOG_KEY = "Relative Links:"
 
     safe true
     priority :lowest
 
-    def initialize(site)
-      @site    = site
-      @context = context
+    def initialize(config)
+      @config = config
     end
 
     def generate(site)
+      return if disabled?
+
       @site    = site
       @context = context
-      return if disabled?
 
       documents = site.pages
       documents = site.pages + site.docs_to_write if collections?
 
       documents.each do |document|
         next unless markdown_extension?(document.extname)
         next if document.is_a?(Jekyll::StaticFile)
+        next if excluded?(document)
 
         replace_relative_links!(document)
       end
@@ -73,7 +75,7 @@ def link_parts(matches)
     end
 
     def context
-      JekyllRelativeLinks::Context.new(site)
+      @context ||= JekyllRelativeLinks::Context.new(site)
     end
 
     def markdown_extension?(extension)
@@ -122,7 +124,7 @@ def fragment?(string)
     end
 
     def option(key)
-      site.config[CONFIG_KEY] && site.config[CONFIG_KEY][key]
+      config[CONFIG_KEY] && config[CONFIG_KEY][key]
     end
 
     def disabled?
@@ -132,5 +134,23 @@ def disabled?
     def collections?
       option(COLLECTIONS_KEY) == true
     end
+
+    def excluded?(document)
+      return false unless option("exclude")
+
+      entry_filter = if document.respond_to?(:collection)
+                       document.collection.entry_filter
+                     else
+                       global_entry_filter
+                     end
+
+      entry_filter.glob_include?(option("exclude"), document.relative_path).tap do |excluded|
+        Jekyll.logger.debug(LOG_KEY, "excluded #{document.relative_path}") if excluded
+      end
+    end
+
+    def global_entry_filter
+      @global_entry_filter ||= Jekyll::EntryFilter.new(site)
+    end
   end
 end

spec/fixtures/site/another-page.md

@@ -2,3 +2,5 @@
 ---
 
 # Another page
+
+[Page](page.md)

spec/jekyll-relative-links/generator_spec.rb

@@ -1,8 +1,13 @@
 # frozen_string_literal: true
 
 RSpec.describe JekyllRelativeLinks::Generator do
+  let(:site_config) do
+    overrides["relative_links"] = plugin_config if plugin_config
+    overrides
+  end
   let(:overrides) { {} }
-  let(:site) { fixture_site("site", overrides) }
+  let(:plugin_config) { nil }
+  let(:site) { fixture_site("site", site_config) }
   let(:page) { page_by_path(site, "page.md") }
   let(:html_page) { page_by_path(site, "html-page.html") }
   let(:another_page) { page_by_path(site, "another-page.md") }
@@ -12,18 +17,20 @@
   let(:item) { doc_by_path(site, "_items/some-item.md") }
   let(:item_2) { doc_by_path(site, "_items/some-subdir/another-item.md") }
 
-  subject { described_class.new(site) }
+  subject { described_class.new(site.config) }
 
   before(:each) do
     site.reset
     site.read
   end
 
-  it "saves the site" do
-    expect(subject.site).to eql(site)
+  it "saves the config" do
+    expect(subject.config).to eql(site.config)
   end
 
   context "detecting markdown" do
+    before { subject.instance_variable_set "@site", site }
+
     it "knows when an extension is markdown" do
       expect(subject.send(:markdown_extension?, ".md")).to eql(true)
     end
@@ -173,20 +180,18 @@
     end
 
     context "disabled" do
-      let(:overrides) { { "relative_links" => { "enabled" => false } } }
+      let(:plugin_config) { { "enabled" => false } }
 
       it "does not process pages when disabled" do
         expect(page.content).to include("[Another Page](another-page.md)")
       end
     end
 
     context "collections" do
+      let(:plugin_config) { { "collections" => true } }
       let(:overrides) do
         {
-          "relative_links" => {
-            "collections" => true,
-          },
-          "collections"    => {
+          "collections" => {
             "items" => {
               "permalink" => "/items/:name/",
               "output"    => true,
@@ -254,6 +259,47 @@
           expect(item.content).to include("[A post](/2016/01/01/test.html)")
         end
       end
+
+      context "excludes" do
+        let(:excludes) do
+          [
+            "another-page.md",
+            "_posts/2016-01-01-test.md",
+            "_items/some-subdir/another-item.md",
+          ]
+        end
+        let(:plugin_config) { { "collections" => true, "exclude" => excludes } }
+
+        context "pages" do
+          it "includes included pages" do
+            expect(page.content).to include("[Another Page](/another-page.html)")
+          end
+
+          it "excludes excluded pages" do
+            expect(another_page.content).to include("[Page](page.md)")
+          end
+        end
+
+        context "posts" do
+          it "includes included posts" do
+            expect(subdir_post.content).to include("[Another Page](/another-page.html)")
+          end
+
+          it "excludes excluded posts" do
+            expect(post.content).to include("[Another Page](../another-page.md)")
+          end
+        end
+
+        context "collections" do
+          it "includes included documents" do
+            expect(item.content).to include("[Another Page](/another-page.html)")
+          end
+
+          it "excludes excluded documents" do
+            expect(item_2.content).to include("[Another Page](../../another-page.md)")
+          end
+        end
+      end
     end
   end