Fix titles (#146)

This fixes the default auto generated LaTeX titles for the website

book/makefile

@@ -227,7 +227,6 @@ website:
 	rm -rf $(WEBSITE_DIR)
 	make4ht -c website.cfg -a debug -uf html5+tidy+common_domfilters+dvisvgm_hashes -d $(WEBSITE_DIR) book.tex
 	cp $(WEBSITE_DIR)/book.html $(WEBSITE_DIR)/index.html
-	sed -r -i -e 's|<title></title>|<title>The Sourdough Framework</title>|g' $(WEBSITE_DIR)/index.html
 
 # Debug Stuff from now on
 .PHONY: show_tools_version

website/modify_build.rb

@@ -29,6 +29,7 @@ class ModifyBuild
     orig_text = File.read(filename)
     text = fix_double_slashes(orig_text)
     text = fix_navigation_bar(text)
+    text = fix_titles(text)
     File.open(filename, "w") {|file| file.puts text }
   end
 
@@ -79,6 +80,35 @@ class ModifyBuild
     end
     doc.to_html
   end
+
+  def fix_titles(text)
+    doc = Nokogiri::HTML(text)
+    title_node = doc.css("title")[0]
+    raise ArgumentError.new("No title found in HTML document") if title_node.nil?
+
+    title_node.content = build_title(title_node.content)
+    doc.to_html
+  end
+
+
+  # "3 Making a sourdough starter"
+  # Should return Making a sourdough starter - The Sourdough Framework"
+  def build_title(title)
+    # No title, happens on index page in LaTeX build
+    return title_appendix if title.length == 0
+
+    # Starts with number
+    if title[0].to_i > 0
+      use_title = title.split(" ").drop(1).join(" ")
+    else
+      use_title = title
+    end
+    "#{use_title} - #{title_appendix}"
+  end
+
+  def title_appendix
+    "The Sourdough Framework"
+  end
 end
 
 ModifyBuild.build