Refactor book:build task

README.asc

@@ -29,6 +29,26 @@ Converting to PDF...
  -- PDF output at progit.pdf
 ----
 
+If you only want to generate only one of supported formats (HTML, Epub, or PDF), do one of the following:
+
+To generate HTML book:
+
+----
+$ bundle exec rake book:build_html
+----
+
+To generate Epub book:
+
+----
+$ bundle exec rake book:build_epub
+----
+
+To generate PDF book:
+
+----
+$ bundle exec rake book:build_pdf
+----
+
 == Signaling an Issue
 
 Before signaling an issue, please check that there isn't already a similar one in the bug tracking system.

Rakefile

@@ -6,31 +6,59 @@ namespace :book do
     end
   end
 
+  # Variables referenced for build
+  version_string = ENV['TRAVIS_TAG'] || `git describe --tags`.chomp
+  if version_string.empty?
+    version_string = '0'
+  end
+  date_string = Time.now.strftime("%Y-%m-%d")
+  params = "--attribute revnumber='#{version_string}' --attribute revdate='#{date_string}'"
+
   desc 'build basic book formats'
-  task :build do
+  task :build => [:build_html, :build_epub, :build_pdf] do
+    begin
+        # Run check
+        Rake::Task["book:check"].invoke
+
+        # Rescue to ignore checking errors
+        rescue => e
+        puts e.message
+        puts "Error when checking books (ignored)"
+    end
+  end
 
+  desc 'build basic book formats (for ci)'
+  task :ci => [:build_html, :build_epub, :build_pdf] do
     begin
-      version_string = ENV['TRAVIS_TAG'] || `git describe --tags`.chomp
-      if version_string.empty?
-        version_string = '0'
-      end
-      date_string = Time.now.strftime("%Y-%m-%d")
-      params = "--attribute revnumber='#{version_string}' --attribute revdate='#{date_string}'"
+        # Run check, but don't ignore any errors
+        Rake::Task["book:check"].invoke
+    end
+  end
+
+  desc 'generate contributors list'
+  file 'book/contributors.txt' do
       puts "Generating contributors list"
       `git shortlog -s | grep -v -E "(Straub|Chacon|dependabot)" | cut -f 2- | column -c 120 > book/contributors.txt`
+  end
 
+  desc 'build HTML format'
+  task :build_html => 'book/contributors.txt' do
       puts "Converting to HTML..."
       `bundle exec asciidoctor #{params} -a data-uri progit.asc`
       puts " -- HTML output at progit.html"
 
-      exec_or_raise('htmlproofer --check-html progit.html')
+  end
 
+  desc 'build Epub format'
+  task :build_epub => 'book/contributors.txt' do
       puts "Converting to EPub..."
       `bundle exec asciidoctor-epub3 #{params} progit.asc`
       puts " -- Epub output at progit.epub"
 
-      exec_or_raise('epubcheck progit.epub')
+  end
 
+  desc 'build Mobi format'
+  task :build_mobi => 'book/contributors.txt' do
       # Commented out the .mobi file creation because the kindlegen dependency is not available.
       # For more information on this see: #1496.
       # This is a (hopefully) temporary fix until upstream asciidoctor-epub3 is fixed and we can offer .mobi files again.
@@ -39,12 +67,46 @@ namespace :book do
       # `bundle exec asciidoctor-epub3 #{params} -a ebook-format=kf8 progit.asc`
       # puts " -- Mobi output at progit.mobi"
 
+      # FIXME: If asciidoctor-epub3 supports Mobi again, uncomment these
+      # lines below
+      puts "Converting to Mobi isn't supported yet."
+      puts "For more information see issue #1496 at https://github.com/progit/progit2/issues/1496."
+      exit(127)
+  end
+
+  desc 'build PDF format'
+  task :build_pdf => 'book/contributors.txt' do
       puts "Converting to PDF... (this one takes a while)"
       `bundle exec asciidoctor-pdf #{params} progit.asc 2>/dev/null`
       puts " -- PDF output at progit.pdf"
+  end
+
+  desc 'Check generated books'
+  task :check => [:build_html, :build_epub] do
+    begin
+        puts "Checking generated books"
+
+        exec_or_raise('htmlproofer --check-html progit.html')
+        exec_or_raise('epubcheck progit.epub')
+    end
+  end
+
+  desc 'Clean all generated files'
+  task :clean do
+    begin
+        puts "Removing generated files"
+
+        FileList['book/contributors.txt', 'progit.html', 'progit.epub', 'progit.pdf'].each do |file|
+            rm file
 
+            # Rescue if file not found
+            rescue Errno::ENOENT => e
+            puts e.message
+            puts "Error removing files (ignored)"
+        end
     end
   end
+
 end
 
 task :default => "book:build"