From 77730c3073b12c2b829a5bf71126ca6ee591895c Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Wed, 9 Mar 2022 14:50:32 +0800
Subject: [PATCH 01/10] Added eigen3 scrapers, filters, icons, and etc.

---
 .../templates/pages/about_tmpl.coffee         |   5 +
 assets/stylesheets/application.css.scss       |   1 +
 assets/stylesheets/pages/_eigen3.scss         | 267 ++++++++++++++++++
 lib/docs/filters/eigen3/clean_html.rb         |  22 ++
 lib/docs/filters/eigen3/entries.rb            | 113 ++++++++
 lib/docs/scrapers/eigen3.rb                   |  45 +++
 public/icons/docs/eigen3/16.png               | Bin 0 -> 1460 bytes
 public/icons/docs/eigen3/16@2x.png            | Bin 0 -> 3088 bytes
 public/icons/docs/eigen3/SOURCE               |   1 +
 9 files changed, 454 insertions(+)
 create mode 100644 assets/stylesheets/pages/_eigen3.scss
 create mode 100644 lib/docs/filters/eigen3/clean_html.rb
 create mode 100644 lib/docs/filters/eigen3/entries.rb
 create mode 100644 lib/docs/scrapers/eigen3.rb
 create mode 100644 public/icons/docs/eigen3/16.png
 create mode 100644 public/icons/docs/eigen3/16@2x.png
 create mode 100644 public/icons/docs/eigen3/SOURCE

diff --git a/assets/javascripts/templates/pages/about_tmpl.coffee b/assets/javascripts/templates/pages/about_tmpl.coffee
index d8f1e249..f5fa3b14 100644
--- a/assets/javascripts/templates/pages/about_tmpl.coffee
+++ b/assets/javascripts/templates/pages/about_tmpl.coffee
@@ -262,6 +262,11 @@ credits = [
     '2001-2015 by the original authors<br>Drupal is a registered trademark of Dries Buytaert.',
     'GPLv2',
     'https://api.drupal.org/api/drupal/LICENSE.txt'
+  ],[
+    'Eigen3',
+    'Eigen',
+    'MPL2',
+    'https://www.mozilla.org/en-US/MPL/2.0/'
   ], [
     'Electron',
     'GitHub Inc.',
diff --git a/assets/stylesheets/application.css.scss b/assets/stylesheets/application.css.scss
index 3a6d428e..1d5da325 100644
--- a/assets/stylesheets/application.css.scss
+++ b/assets/stylesheets/application.css.scss
@@ -52,6 +52,7 @@
         'pages/dart',
         'pages/dojo',
         'pages/drupal',
+        'pages/eigen3',
         'pages/elixir',
         'pages/elisp',
         'pages/ember',
diff --git a/assets/stylesheets/pages/_eigen3.scss b/assets/stylesheets/pages/_eigen3.scss
new file mode 100644
index 00000000..ae5c5f99
--- /dev/null
+++ b/assets/stylesheets/pages/_eigen3.scss
@@ -0,0 +1,267 @@
+._eigen3 {
+    /* General */
+    a.el {
+        font-weight: bold;
+    }
+    a {
+        color: #3D578C;
+        font-weight: normal;
+        text-decoration: none;
+    }
+    /* end General */
+
+    /* Title */
+    .title {
+        font: 400 14px/28px ,sans-serif;
+        font-size: 150%;
+        font-weight: bold;
+        margin: 10px 2px;
+    }
+
+    div.ingroups {
+        font-size: 8pt;
+        text-align: left;
+    }
+    /* end Title */
+
+    /* Fragments */
+    div.fragment {
+        display: table;
+        padding: 4px;
+        border: 1px solid #C4CFE5;
+    }
+    .fragment {
+        text-align: left;
+        direction: ltr;
+        overflow-x: auto;
+        overflow-y: hidden;
+    }
+
+    div.line {
+        font-family: var(--monoFont);
+        font-size: 13px;
+        min-height: 13px;
+        line-height: 1.0;
+        text-wrap: unrestricted;
+        white-space: -moz-pre-wrap;
+        white-space: -pre-wrap;
+        white-space: -o-pre-wrap;
+        white-space: pre-wrap;
+        word-wrap: break-word;
+        // text-indent: -53px;
+        // padding-left: 53px;
+        padding-bottom: 0px;
+        margin: 0px;
+        -webkit-transition-property: background-color, box-shadow;
+        -webkit-transition-duration: 0.5s;
+        -moz-transition-property: background-color, box-shadow;
+        -moz-transition-duration: 0.5s;
+        -ms-transition-property: background-color, box-shadow;
+        -ms-transition-duration: 0.5s;
+        -o-transition-property: background-color, box-shadow;
+        -o-transition-duration: 0.5s;
+        transition-property: background-color, box-shadow;
+        transition-duration: 0.5s;
+    }
+
+    .fragment {
+        text-align: left;
+        direction: ltr;
+        overflow-x: auto; /*Fixed: fragment lines overlap floating elements*/
+        overflow-y: hidden;
+    }
+
+    div.line::after {
+        content: "\000A";
+        white-space: pre;
+    }
+
+    a.code, a.code:visited, a.line, a.line:visited {
+        color: #4665A2;
+    }
+
+    a.codeRef, a.codeRef:visited, a.lineRef, a.lineRef:visited {
+        color: #4665A2;
+    }
+
+    /* end Fragements */
+
+    /* Code Colorization */
+
+    span.keyword {
+        color: var(--prismKeyword)
+    }
+
+    span.keywordtype {
+        color: var(--prismKeyword)
+    }
+
+    span.keywordflow {
+        color: var(--prismKeyword)
+    }
+
+    span.comment {
+        color: var(--textColorLight);
+    }
+
+    span.preprocessor {
+        color: var(--prismKeyword);
+    }
+
+    span.stringliteral {
+        color: var(--prismText);
+    }
+
+    span.charliteral {
+        color: var(--prismText);
+    }
+
+    // span.vhdldigit {
+    //     color: #ff00ff
+    // }
+
+    // span.vhdlchar {
+    //     color: #000000
+    // }
+
+    // span.vhdlkeyword {
+    //     color: #700070
+    // }
+
+    // span.vhdllogic {
+    //     color: #ff0000
+    // }
+
+    // blockquote {
+    //     background-color: #F7F8FB;
+    //     border-left: 2px solid #9CAFD4;
+    //     margin: 0 24px 0 4px;
+    //     padding: 0 12px 0 16px;
+    // }
+
+    // blockquote.DocNodeRTL {
+    //     border-left: 0;
+    //     border-right: 2px solid #9CAFD4;
+    //     margin: 0 4px 0 24px;
+    //     padding: 0 16px 0 12px;
+    // }
+
+    /* end Code Colorization */
+
+    /* Member List */
+
+    .memtitle {
+        padding: 8px;
+        border-top: 1px solid; //#A8B8D9;
+        border-left: 1px solid; //#A8B8D9;
+        border-right: 1px solid; //#A8B8D9;
+        border-top-right-radius: 4px;
+        border-top-left-radius: 4px;
+        margin-bottom: -1px;
+        // background-image: url('nav_f.png');
+        // background-repeat: repeat-x;
+        // background-color: #E2E8F2;
+        line-height: 1.25;
+        font-weight: 300;
+        // float: left;
+      }
+
+    .mdescLeft, .mdescRight, .memItemLeft, .memItemRight, .memTemplItemLeft, .memTemplItemRight, .memTemplParams {
+        // background-color: #F9FAFC;
+        border: none;
+        margin: 4px;
+        padding: 1px 0 0 8px;
+      }
+
+    td.memTemplParams {
+        border: none;
+        white-space: nowrap;
+        font-size: 80%;
+    }
+
+    .memproto, dl.reflist dt {
+        border-top: 0.5px solid; //  #A8B8D9;
+        border-left: 1px solid; // #A8B8D9;
+        border-right: 1px solid; // #A8B8D9;
+        border-bottom: 1px solid; // #A8B8D9;
+        padding: 6px 0px 6px 0px;
+    }
+
+    .memtemplate {
+        font-size: 80%;
+        color: #4665A2;
+        font-weight: normal;
+        margin-left: 9px;
+    }
+
+    .memdoc {
+        padding-left: 6px;
+    }
+
+    table.mlabels {
+        padding: 0;
+        margin: 0;
+        border: none;
+    }
+
+    td.mlabels-left, td.mlabels-right {
+        border: none;
+        padding: 0;
+        vertical-align: bottom;
+    }
+
+    td.memSeparator {
+        line-height: 1px;
+        padding: 0px;
+    }
+    /* end Member List */
+
+    /* Member Name */
+    td.mlabels-right {
+        vertical-align: bottom;
+        padding: 0px;
+        white-space: nowrap;
+    }
+
+    table.memname {
+        border: none;
+        margin-left: 6px;
+        margin-top: 0.5em;
+    }
+
+    table.memname tr{
+        border: none;
+    }
+
+    table.memname th, table.memname td{
+        border: none;
+        padding: 1px;
+        vertical-align: bottom;
+    }
+
+    td.mlabels-left {
+        width: 100%;
+    }
+
+    .paramname {
+        // color: #602020;
+        white-space: nowrap;
+      }
+
+    span.mlabel {
+        background-color: #728DC1;
+        // border-top: 1px solid #5373B4;
+        // border-left: 1px solid #5373B4;
+        // border-right: 1px solid #C4CFE5;
+        // border-bottom: 1px solid #C4CFE5;
+        text-shadow: none;
+        color: white;
+        margin-right: 4px;
+        padding: 2px 3px;
+        border-radius: 3px;
+        font-size: 7pt;
+        white-space: nowrap;
+        vertical-align: middle;
+      }
+    /* end Member Name */
+}
diff --git a/lib/docs/filters/eigen3/clean_html.rb b/lib/docs/filters/eigen3/clean_html.rb
new file mode 100644
index 00000000..e1215403
--- /dev/null
+++ b/lib/docs/filters/eigen3/clean_html.rb
@@ -0,0 +1,22 @@
+module Docs
+  class Eigen3
+    class CleanHtmlFilter < Filter
+
+      def call
+        # TODO doc.inner_html = parse
+        # inner_html = String.new(doc.inner_html).gsub(/<div class="line">(.*?)<\/div>/m, "\\1\n").gsub(/<div class="fragment">(.*?)<\/div>/m, '<pre class="fragment">\1</pre>')
+        # doc.inner_html = inner_html
+        @doc = at_css('#doc-content')
+        css('#MSearchSelectWindow').remove
+        css('#MSearchResultsWindow').remove
+        css('.directory .levels').remove
+        css('.header .summary').remove
+        css('.ttc').remove
+        css('.top').remove
+        css('.dynheader.closed').remove
+        css('.permalink').remove
+        doc
+      end
+    end
+  end
+end
diff --git a/lib/docs/filters/eigen3/entries.rb b/lib/docs/filters/eigen3/entries.rb
new file mode 100644
index 00000000..1aa134bf
--- /dev/null
+++ b/lib/docs/filters/eigen3/entries.rb
@@ -0,0 +1,113 @@
+module Docs
+  class Eigen3
+    class EntriesFilter < Docs::EntriesFilter
+      def get_type
+        group = at_css('.title .ingroups')
+        content = at_css('.contents').content
+        title = get_title()
+        downtitle = title.downcase
+        name = get_name
+        if content.include?('TODO: write this dox page!') ||
+            content.blank? || content.empty?
+          return nil
+        end
+        if slug.include?('unsupported')
+          return 'Unsupported'
+        elsif title.end_with?('module')
+          return name
+        elsif not group.nil? and not group.children[-1].nil? and group.children[-1].content != 'Reference'
+          if group.children[-1].content.end_with?('module') || group.content.include?('Reference')
+            return group.children[-1].content
+          else
+            return 'Chapter: ' + group.children[-1].content
+          end
+        elsif slug.start_with?('Topic') || downtitle.end_with?("topics")
+          return 'Topics'
+        elsif downtitle.end_with?("class template reference") || downtitle.end_with?("class reference") || downtitle.end_with?("struct reference")
+          return 'Classes'
+        elsif downtitle.end_with?("typedefs")
+          return 'Typedefs'
+        elsif downtitle.end_with?("namespace reference")
+          return 'Namespaces'
+        elsif name.match(/^Eigen::.*::/)
+          return name.gsub(/^Eigen::/, '').gsub(/::.*/, '')
+        elsif not group.nil? and not group.children[0].nil?
+          return 'Chapter: ' + group.children[0].content
+        # elsif slug.downcase.include?('tutorial')
+        #   return nil
+        else
+          return 'Eigen'
+        end
+      end
+
+      def get_name
+        title = get_title().gsub(/[<(].*/, '').gsub(/(Class|Class Template|Namespace|Struct) Reference/, '').strip
+      end
+
+      def get_title
+        unless at_css('.title').nil?
+          group = at_css('.title .ingroups')
+          title = at_css('.title').content
+          if not group.nil?
+            title = title.delete_suffix(group.content)
+          end
+          return title.strip
+        else
+          return slug
+        end
+      end
+
+
+      def additional_entries
+        # return [] if slug.include?('unsupported')
+        name = get_name()
+        entries = []
+
+        css('table.memberdecls').map do |table|
+          doxygen_type = table.at_css("tr.heading").text.strip
+          case doxygen_type
+          when "Functions"
+            type = name == 'Eigen' ? "Functions" : nil
+          when "Public Member Functions", "Static Public Member Functions"
+            type = nil
+          when "Classes", "Typedefs"
+            type = "Classes"
+          when "Variables"
+            type = "Variables"
+          else
+            next
+          end
+
+          table.css('td.memItemRight,td.memTemplItemRight').map do |node|
+            if node.content.include?('KLU')
+              puts(node.content)
+            end
+            href = node.at_css("a")
+            if href.nil?
+              next
+            end
+
+            href = node.at_css("a").attr('href')
+            if href.index("#").nil? then
+              href += "#"
+            end
+            if slug.include?('unsupported') and not href.include?('unsupported')
+              next
+            end
+
+            content = node.content
+            if doxygen_type == "Typedefs"
+              content = content.sub(/\s*=.*$/, "")
+            end
+            if not (name.end_with?('module') || name.end_with?('typedefs'))
+              content = name + "::" + content
+            end
+
+            entries << [content, href, type]
+          end
+        end
+        entries
+      end
+    end
+  end
+end
diff --git a/lib/docs/scrapers/eigen3.rb b/lib/docs/scrapers/eigen3.rb
new file mode 100644
index 00000000..641ec72d
--- /dev/null
+++ b/lib/docs/scrapers/eigen3.rb
@@ -0,0 +1,45 @@
+module Docs
+  class Eigen3 < UrlScraper
+    self.name = 'Eigen3'
+    self.type = 'eigen3'
+    self.slug = 'eigen3'
+    self.base_url = 'https://eigen.tuxfamily.org/dox/'
+    self.root_path = 'index.html'
+    self.initial_paths = [
+      "modules.html"
+    ]
+    self.release = '3.4.0'
+
+    self.links = {
+      home: 'https://eigen.tuxfamily.org',
+      code: 'https://gitlab.com/libeigen/eigen'
+    }
+
+    html_filters.push 'eigen3/entries', 'eigen3/clean_html'
+
+    # Remove the `clean_text` because Doxygen are actually creating empty
+    # anchor such as <a id="asd"></a> to do anchor link.. and that anchor
+    # will be removed by clean_text
+    self.text_filters = FilterStack.new
+    text_filters.push 'images', 'inner_html', 'attribution'
+
+
+
+    def get_latest_version(opts)
+      tags = get_gitlab_tags("https://gitlab.com", "libeigen", "eigen", opts)
+      tags[0]['name']
+    end
+
+    options[:attribution] = <<-HTML
+      &copy; Eigen.<br>
+      Licensed under the MPL License.
+    HTML
+
+    # Skip source code since it doesn't provide any useful docs
+    options[:skip_patterns] = [/_source/, /-members/, /__Reference\.html/, /_chapter\.html/,]
+
+    # TODO: replace cppreference
+    # options[:replace_urls] = { 'http://en.cppreference.com/w/cpp/' => 'cpp/' }
+
+  end
+end
diff --git a/public/icons/docs/eigen3/16.png b/public/icons/docs/eigen3/16.png
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zoNNq#FCC?~(s6p91M*%9@>JkTBC(VzXv;R?7hISohe3eBFocvjM4lpzBgiy@OhXKJ
zcd@&(g}v@w+`YSt5|z-S5w0z7<M_cgcp}kV?@gQ6?!=$k3`<WZhW=cos<SYAuq<Dw
zQQZ&p$Y7-9+vJ4F4bChZai)>S5%O>f3pv8c2*GfKI1G>m6L1-0v^&C`-UL~aV>}UH
zT48;dqFgEIU^n>gm22x?dd{htPqy2qZi{^JK(ToJ(s20TN3^=D0AO!tEN}0tuwGTk
z`Di*}qu~^$76_??2*yxgpa4wH;8+9%3Sp3fDT%uyfl;KuDM4Kaxcb_;q~YO(@<jaG
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zgg`5e{y0Z(Dv=0{ToEXtL79@Sm7n)GJ@*L6>Fp?bYF+EUya25JU!9Rw8huI0@`)3T
z6B#qx8D+#NyYj|Xw6YheY006c$%!6Ek_;y~`a?nbQ<+aG7p;!RN_9Kw1#)$os^@Dy
z`}*Hs&feg_(WYts!V%wZ6oGgs<;Fav@sI3`o_y32gy_AixB6ePO><FeJ>zgg-5#nX
zlVCqJRMCr6CrVVyGs&S*tb=~2mK$waC>9BVFugQP)VbXdSFi5;?x;h)jCEk~5!3ub
zq4jf_5YGg_BG-D4;Qfu@o*L`-)&>9xz?<<%y;Y)f(^Rjo?WrLnsA`Q#t}zCn-Wxw`
zv;pkrgm~Lp-(Z0FPhKW<W%kYU%>V!ZC3HntbYx+4WjbSWWnpw>05UK#GA%GOEigG$
zF)=zbG&(ghD=;`ZFff+7?k@lU03~!qSaf7zbY(hiZ)9m^c>ppnGBPbNGc7PVR539+
eGc-CfIV&(YIxsNrB@1u>0000<MNUMnLSTZ%Zo=vS

literal 0
HcmV?d00001

diff --git a/public/icons/docs/eigen3/SOURCE b/public/icons/docs/eigen3/SOURCE
new file mode 100644
index 00000000..439adb72
--- /dev/null
+++ b/public/icons/docs/eigen3/SOURCE
@@ -0,0 +1 @@
+https://gitlab.com/libeigen/eigen/-/blob/master/doc/Eigen_Silly_Professor_64x64.png

From 44ae69e8427480d5fcf1058a8f0b7367fb239c01 Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Wed, 9 Mar 2022 15:08:28 +0800
Subject: [PATCH 02/10] Fix license version, and some entries issues.

---
 lib/docs/filters/eigen3/entries.rb | 3 ++-
 lib/docs/scrapers/eigen3.rb        | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/docs/filters/eigen3/entries.rb b/lib/docs/filters/eigen3/entries.rb
index 1aa134bf..12248a2f 100644
--- a/lib/docs/filters/eigen3/entries.rb
+++ b/lib/docs/filters/eigen3/entries.rb
@@ -99,7 +99,8 @@ module Docs
             if doxygen_type == "Typedefs"
               content = content.sub(/\s*=.*$/, "")
             end
-            if not (name.end_with?('module') || name.end_with?('typedefs'))
+            if not (name.end_with?('module') || name.end_with?('typedefs')) \
+              and not content.start_with?("Eigen::")
               content = name + "::" + content
             end
 
diff --git a/lib/docs/scrapers/eigen3.rb b/lib/docs/scrapers/eigen3.rb
index 641ec72d..c7ed97a6 100644
--- a/lib/docs/scrapers/eigen3.rb
+++ b/lib/docs/scrapers/eigen3.rb
@@ -32,7 +32,7 @@ module Docs
 
     options[:attribution] = <<-HTML
       &copy; Eigen.<br>
-      Licensed under the MPL License.
+      Licensed under the MPL2 License.
     HTML
 
     # Skip source code since it doesn't provide any useful docs

From b4a1491c4e2edcad24a1094b44921b8793581d87 Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Wed, 9 Mar 2022 21:35:54 +0800
Subject: [PATCH 03/10] Restructuring entries, duplicated items removed.

---
 lib/docs/filters/eigen3/entries.rb | 52 +++++++++++++++++-------------
 1 file changed, 29 insertions(+), 23 deletions(-)

diff --git a/lib/docs/filters/eigen3/entries.rb b/lib/docs/filters/eigen3/entries.rb
index 12248a2f..3f2a585d 100644
--- a/lib/docs/filters/eigen3/entries.rb
+++ b/lib/docs/filters/eigen3/entries.rb
@@ -7,34 +7,33 @@ module Docs
         title = get_title()
         downtitle = title.downcase
         name = get_name
+
+        # Remove Empty pages.
         if content.include?('TODO: write this dox page!') ||
             content.blank? || content.empty?
           return nil
         end
+
         if slug.include?('unsupported')
           return 'Unsupported'
-        elsif title.end_with?('module')
-          return name
-        elsif not group.nil? and not group.children[-1].nil? and group.children[-1].content != 'Reference'
-          if group.children[-1].content.end_with?('module') || group.content.include?('Reference')
-            return group.children[-1].content
-          else
-            return 'Chapter: ' + group.children[-1].content
-          end
         elsif slug.start_with?('Topic') || downtitle.end_with?("topics")
-          return 'Topics'
-        elsif downtitle.end_with?("class template reference") || downtitle.end_with?("class reference") || downtitle.end_with?("struct reference")
+            return 'Topics'
+        elsif downtitle.end_with?("class template reference") || downtitle.end_with?("class reference")
           return 'Classes'
+        elsif downtitle.end_with?("struct reference")
+          return 'Structs'
         elsif downtitle.end_with?("typedefs")
           return 'Typedefs'
         elsif downtitle.end_with?("namespace reference")
-          return 'Namespaces'
-        elsif name.match(/^Eigen::.*::/)
-          return name.gsub(/^Eigen::/, '').gsub(/::.*/, '')
-        elsif not group.nil? and not group.children[0].nil?
-          return 'Chapter: ' + group.children[0].content
-        # elsif slug.downcase.include?('tutorial')
-        #   return nil
+            return 'Namespaces'
+        elsif not group.nil? and group.content.include?('Reference') and (downtitle.end_with?("module") || downtitle.end_with?("modules"))
+            return "Modules"
+        elsif not group.nil?
+          if group.children.length > 0
+            return 'Chapter: ' + group.children[-1].content
+          else
+            return 'Chapter: ' + group.content
+          end
         else
           return 'Eigen'
         end
@@ -67,11 +66,13 @@ module Docs
           doxygen_type = table.at_css("tr.heading").text.strip
           case doxygen_type
           when "Functions"
-            type = name == 'Eigen' ? "Functions" : nil
+            type = "Functions"
           when "Public Member Functions", "Static Public Member Functions"
             type = nil
-          when "Classes", "Typedefs"
+          when "Classes"
             type = "Classes"
+          when "Typedefs"
+            type = "Typedefs"
           when "Variables"
             type = "Variables"
           else
@@ -88,12 +89,17 @@ module Docs
             end
 
             href = node.at_css("a").attr('href')
-            if href.index("#").nil? then
-              href += "#"
-            end
-            if slug.include?('unsupported') and not href.include?('unsupported')
+
+            if not href.include?("#") and (name == 'Eigen' || type = "Classes") then
               next
             end
+            if slug.include?('unsupported')
+              if not (href.include?('unsupported') || href.include?('#'))
+                next
+              elsif href.include?('#') and not href.include?('unsupported')
+                href = 'unsupported/' + href
+              end
+            end
 
             content = node.content
             if doxygen_type == "Typedefs"

From 684d5bb1946fe41e8862f316bdd0dc36a9b961fc Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Thu, 10 Mar 2022 17:06:36 +0800
Subject: [PATCH 04/10] Improve color scheme.

Known issue: space eaten by Nokogiri.
---
 assets/stylesheets/pages/_eigen3.scss | 160 ++++----------------------
 lib/docs/filters/eigen3/clean_html.rb |  11 +-
 2 files changed, 28 insertions(+), 143 deletions(-)

diff --git a/assets/stylesheets/pages/_eigen3.scss b/assets/stylesheets/pages/_eigen3.scss
index ae5c5f99..3505f0aa 100644
--- a/assets/stylesheets/pages/_eigen3.scss
+++ b/assets/stylesheets/pages/_eigen3.scss
@@ -1,12 +1,14 @@
 ._eigen3 {
     /* General */
-    a.el {
-        font-weight: bold;
-    }
     a {
-        color: #3D578C;
         font-weight: normal;
-        text-decoration: none;
+    }
+
+    code {
+        margin: 0 1px;
+        padding: 1px 4px 2px;
+        background: var(--labelBackground);
+        border-radius: 3px;
     }
     /* end General */
 
@@ -24,130 +26,6 @@
     }
     /* end Title */
 
-    /* Fragments */
-    div.fragment {
-        display: table;
-        padding: 4px;
-        border: 1px solid #C4CFE5;
-    }
-    .fragment {
-        text-align: left;
-        direction: ltr;
-        overflow-x: auto;
-        overflow-y: hidden;
-    }
-
-    div.line {
-        font-family: var(--monoFont);
-        font-size: 13px;
-        min-height: 13px;
-        line-height: 1.0;
-        text-wrap: unrestricted;
-        white-space: -moz-pre-wrap;
-        white-space: -pre-wrap;
-        white-space: -o-pre-wrap;
-        white-space: pre-wrap;
-        word-wrap: break-word;
-        // text-indent: -53px;
-        // padding-left: 53px;
-        padding-bottom: 0px;
-        margin: 0px;
-        -webkit-transition-property: background-color, box-shadow;
-        -webkit-transition-duration: 0.5s;
-        -moz-transition-property: background-color, box-shadow;
-        -moz-transition-duration: 0.5s;
-        -ms-transition-property: background-color, box-shadow;
-        -ms-transition-duration: 0.5s;
-        -o-transition-property: background-color, box-shadow;
-        -o-transition-duration: 0.5s;
-        transition-property: background-color, box-shadow;
-        transition-duration: 0.5s;
-    }
-
-    .fragment {
-        text-align: left;
-        direction: ltr;
-        overflow-x: auto; /*Fixed: fragment lines overlap floating elements*/
-        overflow-y: hidden;
-    }
-
-    div.line::after {
-        content: "\000A";
-        white-space: pre;
-    }
-
-    a.code, a.code:visited, a.line, a.line:visited {
-        color: #4665A2;
-    }
-
-    a.codeRef, a.codeRef:visited, a.lineRef, a.lineRef:visited {
-        color: #4665A2;
-    }
-
-    /* end Fragements */
-
-    /* Code Colorization */
-
-    span.keyword {
-        color: var(--prismKeyword)
-    }
-
-    span.keywordtype {
-        color: var(--prismKeyword)
-    }
-
-    span.keywordflow {
-        color: var(--prismKeyword)
-    }
-
-    span.comment {
-        color: var(--textColorLight);
-    }
-
-    span.preprocessor {
-        color: var(--prismKeyword);
-    }
-
-    span.stringliteral {
-        color: var(--prismText);
-    }
-
-    span.charliteral {
-        color: var(--prismText);
-    }
-
-    // span.vhdldigit {
-    //     color: #ff00ff
-    // }
-
-    // span.vhdlchar {
-    //     color: #000000
-    // }
-
-    // span.vhdlkeyword {
-    //     color: #700070
-    // }
-
-    // span.vhdllogic {
-    //     color: #ff0000
-    // }
-
-    // blockquote {
-    //     background-color: #F7F8FB;
-    //     border-left: 2px solid #9CAFD4;
-    //     margin: 0 24px 0 4px;
-    //     padding: 0 12px 0 16px;
-    // }
-
-    // blockquote.DocNodeRTL {
-    //     border-left: 0;
-    //     border-right: 2px solid #9CAFD4;
-    //     margin: 0 4px 0 24px;
-    //     padding: 0 16px 0 12px;
-    // }
-
-    /* end Code Colorization */
-
     /* Member List */
 
     .memtitle {
@@ -189,7 +67,7 @@
 
     .memtemplate {
         font-size: 80%;
-        color: #4665A2;
+        color: var(--prismKeyword);
         font-weight: normal;
         margin-left: 9px;
     }
@@ -204,6 +82,12 @@
         border: none;
     }
 
+    .memproto a.el, .memberdecls a.el {
+        // font-weight: bold;
+        color: var(--prismKeyword);
+        text-decoration: none;
+    }
+
     td.mlabels-left, td.mlabels-right {
         border: none;
         padding: 0;
@@ -244,24 +128,20 @@
     }
 
     .paramname {
-        // color: #602020;
         white-space: nowrap;
       }
 
     span.mlabel {
-        background-color: #728DC1;
-        // border-top: 1px solid #5373B4;
-        // border-left: 1px solid #5373B4;
-        // border-right: 1px solid #C4CFE5;
-        // border-bottom: 1px solid #C4CFE5;
-        text-shadow: none;
-        color: white;
+        // text-shadow: none;
+        font-family: monospace;
+        color: var(--prismKeyword);
         margin-right: 4px;
         padding: 2px 3px;
-        border-radius: 3px;
-        font-size: 7pt;
+        // border-radius: 3px;
+        font-size: 12px;
         white-space: nowrap;
         vertical-align: middle;
       }
     /* end Member Name */
+
 }
diff --git a/lib/docs/filters/eigen3/clean_html.rb b/lib/docs/filters/eigen3/clean_html.rb
index e1215403..21c2a1e2 100644
--- a/lib/docs/filters/eigen3/clean_html.rb
+++ b/lib/docs/filters/eigen3/clean_html.rb
@@ -3,10 +3,15 @@ module Docs
     class CleanHtmlFilter < Filter
 
       def call
-        # TODO doc.inner_html = parse
-        # inner_html = String.new(doc.inner_html).gsub(/<div class="line">(.*?)<\/div>/m, "\\1\n").gsub(/<div class="fragment">(.*?)<\/div>/m, '<pre class="fragment">\1</pre>')
-        # doc.inner_html = inner_html
         @doc = at_css('#doc-content')
+
+        css("div.fragment").each do |node|
+          node.css("div.line").each do |node|
+            node.replace(node.inner_html + "\n")
+          end
+          node.replace("<pre data-language=\"cpp\" class=\"fragment\">" + node.inner_html + "</pre>")
+        end
+
         css('#MSearchSelectWindow').remove
         css('#MSearchResultsWindow').remove
         css('.directory .levels').remove

From add3280261bb2ea2513d67d9cfe99e55c0ebc1f1 Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Thu, 10 Mar 2022 17:11:53 +0800
Subject: [PATCH 05/10] Improve code fragment.

However, some indents are still eaten.
---
 lib/docs/filters/eigen3/clean_html.rb | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/docs/filters/eigen3/clean_html.rb b/lib/docs/filters/eigen3/clean_html.rb
index 21c2a1e2..0542507e 100644
--- a/lib/docs/filters/eigen3/clean_html.rb
+++ b/lib/docs/filters/eigen3/clean_html.rb
@@ -4,14 +4,6 @@ module Docs
 
       def call
         @doc = at_css('#doc-content')
-
-        css("div.fragment").each do |node|
-          node.css("div.line").each do |node|
-            node.replace(node.inner_html + "\n")
-          end
-          node.replace("<pre data-language=\"cpp\" class=\"fragment\">" + node.inner_html + "</pre>")
-        end
-
         css('#MSearchSelectWindow').remove
         css('#MSearchResultsWindow').remove
         css('.directory .levels').remove
@@ -20,6 +12,16 @@ module Docs
         css('.top').remove
         css('.dynheader.closed').remove
         css('.permalink').remove
+
+        css("div.fragment").each do |node|
+          node.name = 'pre'
+          node['data-language'] = 'cpp'
+          node_content = ""
+          node.css('div').each do |inner_node|
+            node_content += inner_node.text + "\n"
+          end
+          node.content = node_content
+        end
         doc
       end
     end

From 6448e19c1285c50e0356648a22eda0a909ed7f40 Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Fri, 11 Mar 2022 02:22:37 +0800
Subject: [PATCH 06/10] Improve code fragment, fixed space problems.

---
 lib/docs/filters/eigen3/clean_html.rb | 10 ----------
 lib/docs/scrapers/eigen3.rb           | 24 ++++++++++++++++++++++++
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/lib/docs/filters/eigen3/clean_html.rb b/lib/docs/filters/eigen3/clean_html.rb
index 0542507e..3cbe6bb2 100644
--- a/lib/docs/filters/eigen3/clean_html.rb
+++ b/lib/docs/filters/eigen3/clean_html.rb
@@ -12,16 +12,6 @@ module Docs
         css('.top').remove
         css('.dynheader.closed').remove
         css('.permalink').remove
-
-        css("div.fragment").each do |node|
-          node.name = 'pre'
-          node['data-language'] = 'cpp'
-          node_content = ""
-          node.css('div').each do |inner_node|
-            node_content += inner_node.text + "\n"
-          end
-          node.content = node_content
-        end
         doc
       end
     end
diff --git a/lib/docs/scrapers/eigen3.rb b/lib/docs/scrapers/eigen3.rb
index c7ed97a6..30722b2e 100644
--- a/lib/docs/scrapers/eigen3.rb
+++ b/lib/docs/scrapers/eigen3.rb
@@ -41,5 +41,29 @@ module Docs
     # TODO: replace cppreference
     # options[:replace_urls] = { 'http://en.cppreference.com/w/cpp/' => 'cpp/' }
 
+    def parse(response) # Hook here because Nokogori removes whitespace from code fragments
+      last_idx = 0
+      # Process nested <div>s inside code fragment div.
+      while not (last_idx = response.body.index('<div class="fragment">', last_idx)).nil?
+        # enter code fragment <div>
+        level = 1
+        while not (last_idx = response.body.index(/<\/?div/, last_idx+1)).nil?
+          # skip nested divs inside.
+          if response.body[last_idx..last_idx+3] == '<div'
+            level += 1
+          else
+            level -= 1
+          end
+          break if level == 0 # exit code fragment
+        end
+        if not last_idx.nil? and response.body[last_idx..last_idx+5] == '</div>'
+          response.body[last_idx..last_idx+5] = '</pre>'
+        end
+      end
+      response.body.gsub! /[\r\n\s]*<div class="ttc"[^>]*>.*<\/div>[\r\n\s]*/, ""
+      response.body.gsub! /<div class="line">(.*?)<\/div>/m, "\\1"
+      response.body.gsub! '<div class="fragment">', '<pre class="fragment" data-language="cpp">'
+      super
+    end
   end
 end

From c31d71150fa821a165106634fec0c4540d911e1a Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Fri, 11 Mar 2022 02:53:20 +0800
Subject: [PATCH 07/10] Clear errors.

Filter empty pages in `process_response?`.
---
 lib/docs/filters/eigen3/entries.rb | 8 +-------
 lib/docs/scrapers/eigen3.rb        | 9 ++++++++-
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/lib/docs/filters/eigen3/entries.rb b/lib/docs/filters/eigen3/entries.rb
index 3f2a585d..48d37caf 100644
--- a/lib/docs/filters/eigen3/entries.rb
+++ b/lib/docs/filters/eigen3/entries.rb
@@ -8,12 +8,6 @@ module Docs
         downtitle = title.downcase
         name = get_name
 
-        # Remove Empty pages.
-        if content.include?('TODO: write this dox page!') ||
-            content.blank? || content.empty?
-          return nil
-        end
-
         if slug.include?('unsupported')
           return 'Unsupported'
         elsif slug.start_with?('Topic') || downtitle.end_with?("topics")
@@ -90,7 +84,7 @@ module Docs
 
             href = node.at_css("a").attr('href')
 
-            if not href.include?("#") and (name == 'Eigen' || type = "Classes") then
+            if not href.include?("#") and (name == 'Eigen' || type == "Classes") then
               next
             end
             if slug.include?('unsupported')
diff --git a/lib/docs/scrapers/eigen3.rb b/lib/docs/scrapers/eigen3.rb
index 30722b2e..e30fe54c 100644
--- a/lib/docs/scrapers/eigen3.rb
+++ b/lib/docs/scrapers/eigen3.rb
@@ -36,7 +36,7 @@ module Docs
     HTML
 
     # Skip source code since it doesn't provide any useful docs
-    options[:skip_patterns] = [/_source/, /-members/, /__Reference\.html/, /_chapter\.html/,]
+    options[:skip_patterns] = [/_source/, /-members/, /__Reference\.html/, /_chapter\.html/, /\.txt/, /\.tgz/]
 
     # TODO: replace cppreference
     # options[:replace_urls] = { 'http://en.cppreference.com/w/cpp/' => 'cpp/' }
@@ -65,5 +65,12 @@ module Docs
       response.body.gsub! '<div class="fragment">', '<pre class="fragment" data-language="cpp">'
       super
     end
+
+    def process_response?(response)
+      return false unless super
+      # Remove Empty pages.
+      response.body.index(/<div class="contents">[\r\n\s]*<\/div>/m).nil? and \
+        response.body.index(/<p>TODO: write this dox page!<\/p>/).nil?
+    end
   end
 end

From efc7512621a72709e001a15d20d829698d984846 Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Fri, 11 Mar 2022 04:47:47 +0800
Subject: [PATCH 08/10] Added some missed entries.

---
 lib/docs/filters/eigen3/entries.rb | 33 +++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 12 deletions(-)

diff --git a/lib/docs/filters/eigen3/entries.rb b/lib/docs/filters/eigen3/entries.rb
index 48d37caf..b80b0e24 100644
--- a/lib/docs/filters/eigen3/entries.rb
+++ b/lib/docs/filters/eigen3/entries.rb
@@ -61,7 +61,7 @@ module Docs
           case doxygen_type
           when "Functions"
             type = "Functions"
-          when "Public Member Functions", "Static Public Member Functions"
+          when "Public Member Functions", "Static Public Member Functions", "Public Types", "Additional Inherited Members"
             type = nil
           when "Classes"
             type = "Classes"
@@ -73,20 +73,26 @@ module Docs
             next
           end
 
-          table.css('td.memItemRight,td.memTemplItemRight').map do |node|
-            if node.content.include?('KLU')
-              puts(node.content)
-            end
-            href = node.at_css("a")
-            if href.nil?
-              next
-            end
+          tmp_entries = []
 
-            href = node.at_css("a").attr('href')
+          table.css('td.memItemRight,td.memTemplItemRight').map do |node_r|
+            node_l = node_r.parent.at_css('memItemLeft')
+            if (not node_l.nil? and node_l.text.strip == 'enum') || node_r.content.include?('{')
+              node_r.css("a").each {|n| tmp_entries << [n.content, n.attr('href')]}
+            else
+              n = node_r.at_css("a")
+              next if n.nil?
+              tmp_entries << [node_r.content, n.attr('href')]
+            end
+          end
 
+          tmp_entries.each do |args|
+            (content, href) = args
+            next if href.nil?
             if not href.include?("#") and (name == 'Eigen' || type == "Classes") then
               next
             end
+
             if slug.include?('unsupported')
               if not (href.include?('unsupported') || href.include?('#'))
                 next
@@ -95,17 +101,20 @@ module Docs
               end
             end
 
-            content = node.content
             if doxygen_type == "Typedefs"
               content = content.sub(/\s*=.*$/, "")
             end
+
             if not (name.end_with?('module') || name.end_with?('typedefs')) \
               and not content.start_with?("Eigen::")
               content = name + "::" + content
             end
-
+            content.gsub! /^\s+/, ''
+            content.gsub! /\s+,\s+/, ', '
+            content.gsub! /\s\s+/, ' '
             entries << [content, href, type]
           end
+
         end
         entries
       end

From 789afa48b9d91318d9edc4ffee90c13ad47611db Mon Sep 17 00:00:00 2001
From: xjkdev <xjk2008@gmail.com>
Date: Tue, 15 Mar 2022 00:10:43 +0800
Subject: [PATCH 09/10] Reduced scss file.

---
 assets/stylesheets/pages/_eigen3.scss | 131 +++++++-------------------
 1 file changed, 33 insertions(+), 98 deletions(-)

diff --git a/assets/stylesheets/pages/_eigen3.scss b/assets/stylesheets/pages/_eigen3.scss
index 3505f0aa..f0145d90 100644
--- a/assets/stylesheets/pages/_eigen3.scss
+++ b/assets/stylesheets/pages/_eigen3.scss
@@ -1,75 +1,40 @@
 ._eigen3 {
-    /* General */
-    a {
-        font-weight: normal;
-    }
-
-    code {
-        margin: 0 1px;
-        padding: 1px 4px 2px;
-        background: var(--labelBackground);
-        border-radius: 3px;
-    }
-    /* end General */
+    code, span.mlabel { @extend %label; }
 
-    /* Title */
-    .title {
-        font: 400 14px/28px ,sans-serif;
-        font-size: 150%;
-        font-weight: bold;
-        margin: 10px 2px;
-    }
+    .title { @extend h1; }
 
+    /* Breadcrumb Navigation */
     div.ingroups {
-        font-size: 8pt;
+        font-size: 10pt;
         text-align: left;
     }
-    /* end Title */
-
-    /* Member List */
 
+    /* Method Title */
     .memtitle {
-        padding: 8px;
-        border-top: 1px solid; //#A8B8D9;
-        border-left: 1px solid; //#A8B8D9;
-        border-right: 1px solid; //#A8B8D9;
-        border-top-right-radius: 4px;
-        border-top-left-radius: 4px;
-        margin-bottom: -1px;
-        // background-image: url('nav_f.png');
-        // background-repeat: repeat-x;
-        // background-color: #E2E8F2;
-        line-height: 1.25;
-        font-weight: 300;
-        // float: left;
-      }
+        padding: 6px;
+        @extend %heading-box;
+    }
 
-    .mdescLeft, .mdescRight, .memItemLeft, .memItemRight, .memTemplItemLeft, .memTemplItemRight, .memTemplParams {
-        // background-color: #F9FAFC;
+    /* begin Method Declearation */
+    .mdescLeft, .mdescRight, .memItemLeft, .memItemRight,
+    .memTemplItemLeft, .memTemplItemRight, .memtemplate, .memTemplParams {
         border: none;
-        margin: 4px;
-        padding: 1px 0 0 8px;
-      }
+        padding: 1px 8px 0 8px;
+    }
 
-    td.memTemplParams {
-        border: none;
-        white-space: nowrap;
+    .memtemplate, .memTemplParams {
         font-size: 80%;
+        color: var(--prismKeyword);
     }
 
     .memproto, dl.reflist dt {
-        border-top: 0.5px solid; //  #A8B8D9;
-        border-left: 1px solid; // #A8B8D9;
-        border-right: 1px solid; // #A8B8D9;
-        border-bottom: 1px solid; // #A8B8D9;
-        padding: 6px 0px 6px 0px;
+        border: 1px solid var(--boxBorder);
+        margin-bottom: 0.8em;
     }
 
-    .memtemplate {
-        font-size: 80%;
+    .memproto a.el, .memberdecls a.el {
         color: var(--prismKeyword);
-        font-weight: normal;
-        margin-left: 9px;
+        text-decoration: none;
     }
 
     .memdoc {
@@ -82,66 +47,36 @@
         border: none;
     }
 
-    .memproto a.el, .memberdecls a.el {
-        // font-weight: bold;
-        color: var(--prismKeyword);
-        text-decoration: none;
-    }
-
     td.mlabels-left, td.mlabels-right {
         border: none;
         padding: 0;
         vertical-align: bottom;
     }
 
-    td.memSeparator {
-        line-height: 1px;
-        padding: 0px;
+    td.mlabels-left {
+        width: 100%;
     }
-    /* end Member List */
 
-    /* Member Name */
-    td.mlabels-right {
-        vertical-align: bottom;
+    td.memSeparator {
+        line-height: 1px;
         padding: 0px;
-        white-space: nowrap;
     }
 
     table.memname {
         border: none;
         margin-left: 6px;
         margin-top: 0.5em;
+        th, td {
+            padding: 1px;
+            vertical-align: bottom;
+        }
+        tr, th, td {
+            border: none;
+        }
     }
 
-    table.memname tr{
-        border: none;
-    }
-
-    table.memname th, table.memname td{
-        border: none;
-        padding: 1px;
-        vertical-align: bottom;
-    }
-
-    td.mlabels-left {
-        width: 100%;
-    }
-
-    .paramname {
+    .paramname, .mlabels-left, .mlabels-right, .memtemplate, .memTemplParams {
         white-space: nowrap;
-      }
-
-    span.mlabel {
-        // text-shadow: none;
-        font-family: monospace;
-        color: var(--prismKeyword);
-        margin-right: 4px;
-        padding: 2px 3px;
-        // border-radius: 3px;
-        font-size: 12px;
-        white-space: nowrap;
-        vertical-align: middle;
-      }
-    /* end Member Name */
-
+    }
+    /* end Method Declearation */
 }

From c94aa25e6c0e2cbefa9442d977df9bd11dc74585 Mon Sep 17 00:00:00 2001
From: Simon Legner <Simon.Legner@gmail.com>
Date: Thu, 31 Mar 2022 08:25:32 +0200
Subject: [PATCH 10/10] eigen3: clean html, scss

---
 assets/stylesheets/pages/_eigen3.scss | 82 ---------------------------
 lib/docs/filters/eigen3/clean_html.rb |  6 ++
 lib/docs/scrapers/eigen3.rb           |  2 +-
 3 files changed, 7 insertions(+), 83 deletions(-)

diff --git a/assets/stylesheets/pages/_eigen3.scss b/assets/stylesheets/pages/_eigen3.scss
index f0145d90..e69de29b 100644
--- a/assets/stylesheets/pages/_eigen3.scss
+++ b/assets/stylesheets/pages/_eigen3.scss
@@ -1,82 +0,0 @@
-._eigen3 {
-    code, span.mlabel { @extend %label; }
-
-    .title { @extend h1; }
-
-    /* Breadcrumb Navigation */
-    div.ingroups {
-        font-size: 10pt;
-        text-align: left;
-    }
-
-    /* Method Title */
-    .memtitle {
-        padding: 6px;
-        @extend %heading-box;
-    }
-
-    /* begin Method Declearation */
-    .mdescLeft, .mdescRight, .memItemLeft, .memItemRight,
-    .memTemplItemLeft, .memTemplItemRight, .memtemplate, .memTemplParams {
-        border: none;
-        padding: 1px 8px 0 8px;
-    }
-
-    .memtemplate, .memTemplParams {
-        font-size: 80%;
-        color: var(--prismKeyword);
-    }
-
-    .memproto, dl.reflist dt {
-        border: 1px solid var(--boxBorder);
-        margin-bottom: 0.8em;
-    }
-
-    .memproto a.el, .memberdecls a.el {
-        color: var(--prismKeyword);
-        text-decoration: none;
-    }
-
-    .memdoc {
-        padding-left: 6px;
-    }
-
-    table.mlabels {
-        padding: 0;
-        margin: 0;
-        border: none;
-    }
-
-    td.mlabels-left, td.mlabels-right {
-        border: none;
-        padding: 0;
-        vertical-align: bottom;
-    }
-
-    td.mlabels-left {
-        width: 100%;
-    }
-
-    td.memSeparator {
-        line-height: 1px;
-        padding: 0px;
-    }
-
-    table.memname {
-        border: none;
-        margin-left: 6px;
-        margin-top: 0.5em;
-        th, td {
-            padding: 1px;
-            vertical-align: bottom;
-        }
-        tr, th, td {
-            border: none;
-        }
-    }
-
-    .paramname, .mlabels-left, .mlabels-right, .memtemplate, .memTemplParams {
-        white-space: nowrap;
-    }
-    /* end Method Declearation */
-}
diff --git a/lib/docs/filters/eigen3/clean_html.rb b/lib/docs/filters/eigen3/clean_html.rb
index 3cbe6bb2..3870566e 100644
--- a/lib/docs/filters/eigen3/clean_html.rb
+++ b/lib/docs/filters/eigen3/clean_html.rb
@@ -12,6 +12,12 @@ module Docs
         css('.top').remove
         css('.dynheader.closed').remove
         css('.permalink').remove
+        css('.groupheader').remove
+        css('.header').remove
+        css('#details').remove
+        css('*').each do |node|
+          node.remove_attribute('class')
+        end
         doc
       end
     end
diff --git a/lib/docs/scrapers/eigen3.rb b/lib/docs/scrapers/eigen3.rb
index e30fe54c..7ed3d1eb 100644
--- a/lib/docs/scrapers/eigen3.rb
+++ b/lib/docs/scrapers/eigen3.rb
@@ -15,7 +15,7 @@ module Docs
       code: 'https://gitlab.com/libeigen/eigen'
     }
 
-    html_filters.push 'eigen3/entries', 'eigen3/clean_html'
+    html_filters.push 'eigen3/entries', 'eigen3/clean_html', 'title'
 
     # Remove the `clean_text` because Doxygen are actually creating empty
     # anchor such as <a id="asd"></a> to do anchor link.. and that anchor