From f1b464b1edc633efa7509121c3be5ce6e623cef8 Mon Sep 17 00:00:00 2001
From: Jasper van Merle <jaspervmerle@gmail.com>
Date: Fri, 6 Nov 2020 22:51:23 +0100
Subject: [PATCH] Fix broken get_latest_version implementations

---
 lib/docs/scrapers/ansible.rb      | 2 +-
 lib/docs/scrapers/babel.rb        | 3 +--
 lib/docs/scrapers/chef.rb         | 4 ++--
 lib/docs/scrapers/codeigniter.rb  | 5 ++---
 lib/docs/scrapers/dart.rb         | 3 +--
 lib/docs/scrapers/docker.rb       | 6 +++---
 lib/docs/scrapers/elixir.rb       | 2 +-
 lib/docs/scrapers/erlang.rb       | 3 +--
 lib/docs/scrapers/fish.rb         | 3 +--
 lib/docs/scrapers/gnu_cobol.rb    | 8 +++++---
 lib/docs/scrapers/gnuplot.rb      | 4 ++++
 lib/docs/scrapers/godot.rb        | 3 +--
 lib/docs/scrapers/influxdata.rb   | 4 +---
 lib/docs/scrapers/moment.rb       | 3 +--
 lib/docs/scrapers/pandas.rb       | 3 +--
 lib/docs/scrapers/perl.rb         | 3 +--
 lib/docs/scrapers/php.rb          | 5 ++---
 lib/docs/scrapers/python.rb       | 2 +-
 lib/docs/scrapers/react_native.rb | 4 ++--
 lib/docs/scrapers/scikit_learn.rb | 3 +--
 lib/docs/scrapers/statsmodels.rb  | 3 +--
 lib/docs/scrapers/vagrant.rb      | 3 +--
 22 files changed, 35 insertions(+), 44 deletions(-)

diff --git a/lib/docs/scrapers/ansible.rb b/lib/docs/scrapers/ansible.rb
index 6826b393..5a19e393 100644
--- a/lib/docs/scrapers/ansible.rb
+++ b/lib/docs/scrapers/ansible.rb
@@ -71,7 +71,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://docs.ansible.com/ansible/latest/index.html', opts)
-      doc.at_css('.DocSiteProduct-CurrentVersion').content.strip
+      doc.at_css('.version').content.strip
     end
   end
 end
diff --git a/lib/docs/scrapers/babel.rb b/lib/docs/scrapers/babel.rb
index c8d716f1..f8784e80 100644
--- a/lib/docs/scrapers/babel.rb
+++ b/lib/docs/scrapers/babel.rb
@@ -24,8 +24,7 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://babeljs.io/docs/en/', opts)
-      doc.at_css('a[href="/versions"] > h3').content
+      get_latest_github_release('babel', 'babel', opts)
     end
   end
 end
diff --git a/lib/docs/scrapers/chef.rb b/lib/docs/scrapers/chef.rb
index f0b7d6b0..3295f2e4 100644
--- a/lib/docs/scrapers/chef.rb
+++ b/lib/docs/scrapers/chef.rb
@@ -49,8 +49,8 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://downloads.chef.io/chef', opts)
-      doc.at_css('h1.product-heading > span').content.strip
+      doc = fetch_doc('https://downloads.chef.io/products/infra', opts)
+      doc.at_css('#versions > option').content.strip
     end
   end
 end
diff --git a/lib/docs/scrapers/codeigniter.rb b/lib/docs/scrapers/codeigniter.rb
index 05258d9a..b108887b 100644
--- a/lib/docs/scrapers/codeigniter.rb
+++ b/lib/docs/scrapers/codeigniter.rb
@@ -40,9 +40,8 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://codeigniter.com/user_guide/changelog.html', opts)
-      header = doc.at_css('#change-log h2')
-      header.content.scan(/([0-9.]+)/)[0][0]
+      tags = get_github_tags('codeigniter4', 'codeigniter4', opts)
+      tags[0]['name'][1..-1]
     end
   end
 end
diff --git a/lib/docs/scrapers/dart.rb b/lib/docs/scrapers/dart.rb
index e3b8c289..002cdce9 100644
--- a/lib/docs/scrapers/dart.rb
+++ b/lib/docs/scrapers/dart.rb
@@ -32,8 +32,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://api.dartlang.org/', opts)
-      label = doc.at_css('footer > span').content.strip
-      label.sub(/Dart /, '')
+      doc.at_css('footer > span').content.sub(/Dart/, '').strip
     end
   end
 end
diff --git a/lib/docs/scrapers/docker.rb b/lib/docs/scrapers/docker.rb
index 06c3344d..6328644b 100644
--- a/lib/docs/scrapers/docker.rb
+++ b/lib/docs/scrapers/docker.rb
@@ -260,9 +260,9 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://docs.docker.com/', opts)
-      label = doc.at_css('.nav-container button.dropdown-toggle').content.strip
-      label.scan(/([0-9.]+)/)[0][0]
+      doc = fetch_doc('https://docs.docker.com/engine/release-notes/', opts)
+      latest_version = doc.at_css('.content > section > h1[id^="version-"]').content.strip
+      latest_version.rpartition(' ')[-1]
     end
   end
 end
diff --git a/lib/docs/scrapers/elixir.rb b/lib/docs/scrapers/elixir.rb
index f3cc94b2..0888bd44 100644
--- a/lib/docs/scrapers/elixir.rb
+++ b/lib/docs/scrapers/elixir.rb
@@ -126,7 +126,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://hexdocs.pm/elixir/api-reference.html', opts)
-      doc.at_css('h2.sidebar-projectVersion').content.strip[1..-1]
+      doc.at_css('.sidebar-projectVersion').content.strip[1..-1]
     end
   end
 end
diff --git a/lib/docs/scrapers/erlang.rb b/lib/docs/scrapers/erlang.rb
index 14a87cf5..a888e511 100644
--- a/lib/docs/scrapers/erlang.rb
+++ b/lib/docs/scrapers/erlang.rb
@@ -57,8 +57,7 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://www.erlang.org/downloads', opts)
-      doc.at_css('.col-lg-3 > ul > li').content.strip.sub(/OTP /, '')
+      get_latest_github_release('erlang', 'otp', opts)[4..-1]
     end
   end
 end
diff --git a/lib/docs/scrapers/fish.rb b/lib/docs/scrapers/fish.rb
index 3dac427f..a8b1ce8b 100644
--- a/lib/docs/scrapers/fish.rb
+++ b/lib/docs/scrapers/fish.rb
@@ -54,8 +54,7 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('http://fishshell.com/docs/current/index.html', opts)
-      doc.at_css('#toc-index').content.scan(/([0-9.]+)/)[0][0]
+      get_latest_github_release('fish-shell', 'fish-shell', opts)
     end
   end
 end
diff --git a/lib/docs/scrapers/gnu_cobol.rb b/lib/docs/scrapers/gnu_cobol.rb
index 9965359d..a211ef49 100644
--- a/lib/docs/scrapers/gnu_cobol.rb
+++ b/lib/docs/scrapers/gnu_cobol.rb
@@ -18,9 +18,11 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://open-cobol.sourceforge.io/HTML/gnucobpg.html', opts)
-      title = doc.at_css('h1').content
-      title.scan(/([0-9.]+)/)[0][0]
+      fetch_doc('https://sourceforge.net/projects/gnucobol/files/gnucobol/', opts)
+        .css('#files_list > tbody > tr')
+        .map { |file| file['title'] }
+        .sort_by { |version| version.to_f }
+        .last
     end
   end
 end
diff --git a/lib/docs/scrapers/gnuplot.rb b/lib/docs/scrapers/gnuplot.rb
index 0682ade4..4753e195 100644
--- a/lib/docs/scrapers/gnuplot.rb
+++ b/lib/docs/scrapers/gnuplot.rb
@@ -37,5 +37,9 @@ module Docs
       Distributed under the <a href="https://sourceforge.net/p/gnuplot/gnuplot-main/ci/master/tree/Copyright">gnuplot license</a> (rights to distribute modified versions are withheld).
     HTML
 
+    def get_latest_version(opts)
+      doc = fetch_doc('https://sourceforge.net/projects/gnuplot/files/gnuplot/', opts)
+      doc.at_css('#files_list > tbody > tr:nth-child(2)')['title']
+    end
   end
 end
diff --git a/lib/docs/scrapers/godot.rb b/lib/docs/scrapers/godot.rb
index 1ccf693f..03f8192e 100644
--- a/lib/docs/scrapers/godot.rb
+++ b/lib/docs/scrapers/godot.rb
@@ -44,8 +44,7 @@ module Docs
     end
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://docs.godotengine.org/', opts)
-      doc.at_css('.version').content.strip
+      get_latest_github_release('godotengine', 'godot', opts).split('-')[0]
     end
   end
 end
diff --git a/lib/docs/scrapers/influxdata.rb b/lib/docs/scrapers/influxdata.rb
index db160f9c..6a6bff7e 100644
--- a/lib/docs/scrapers/influxdata.rb
+++ b/lib/docs/scrapers/influxdata.rb
@@ -48,9 +48,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://docs.influxdata.com/influxdb/', opts)
-      label = doc.at_css('.navbar--current-product').content.strip
-      label.scan(/([0-9.]+)/)[0][0]
+      get_latest_github_release('influxdata', 'influxdb', opts)
     end
   end
 end
diff --git a/lib/docs/scrapers/moment.rb b/lib/docs/scrapers/moment.rb
index 5b7491ea..e74163be 100644
--- a/lib/docs/scrapers/moment.rb
+++ b/lib/docs/scrapers/moment.rb
@@ -24,8 +24,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('http://momentjs.com/', opts)
-      doc.at_css('.hero-title > h1 > span').content
+      get_github_tags('moment', 'moment', opts)[0]['name']
     end
   end
 end
diff --git a/lib/docs/scrapers/pandas.rb b/lib/docs/scrapers/pandas.rb
index e333da7f..c92d6228 100644
--- a/lib/docs/scrapers/pandas.rb
+++ b/lib/docs/scrapers/pandas.rb
@@ -63,8 +63,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('http://pandas.pydata.org/pandas-docs/stable/', opts)
-      label = doc.at_css('.body > .section > p').content
-      label.scan(/Version: ([0-9.]+)/)[0][0]
+      doc.at_css('#pandas-documentation').content.scan(/Version: ([0-9.]+)/)[0][0]
     end
   end
 end
diff --git a/lib/docs/scrapers/perl.rb b/lib/docs/scrapers/perl.rb
index ebf0a653..8c0462e5 100644
--- a/lib/docs/scrapers/perl.rb
+++ b/lib/docs/scrapers/perl.rb
@@ -46,8 +46,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://perldoc.perl.org/', opts)
-      header = doc.at_css('h2.h1').content
-      header.scan(/Perl ([0-9.]+)/)[0][0]
+      doc.at_css('#dropdownlink-stable').content
     end
   end
 end
diff --git a/lib/docs/scrapers/php.rb b/lib/docs/scrapers/php.rb
index 181d8b67..c6ab0581 100644
--- a/lib/docs/scrapers/php.rb
+++ b/lib/docs/scrapers/php.rb
@@ -68,9 +68,8 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://secure.php.net/manual/en/doc.changelog.php', opts)
-      label = doc.at_css('tbody.gen-changelog > tr > td').content
-      label.split(',').last.strip
+      doc = fetch_doc('https://www.php.net/supported-versions.php', opts)
+      doc.at_css('table > tbody > .stable:last-of-type > td > a').content.strip
     end
   end
 end
diff --git a/lib/docs/scrapers/python.rb b/lib/docs/scrapers/python.rb
index 89f1c3c0..f9a9768e 100644
--- a/lib/docs/scrapers/python.rb
+++ b/lib/docs/scrapers/python.rb
@@ -60,7 +60,7 @@ module Docs
 
     def get_latest_version(opts)
       doc = fetch_doc('https://docs.python.org/', opts)
-      doc.at_css('.version_switcher_placeholder').content
+      doc.at_css('title').content.split(' ')[0]
     end
   end
 end
diff --git a/lib/docs/scrapers/react_native.rb b/lib/docs/scrapers/react_native.rb
index fe87e492..d00e55c2 100644
--- a/lib/docs/scrapers/react_native.rb
+++ b/lib/docs/scrapers/react_native.rb
@@ -32,8 +32,8 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://facebook.github.io/react-native/docs/getting-started.html', opts)
-      doc.at_css('header > a > h3').content
+      doc = fetch_doc('https://reactnative.dev/docs/getting-started', opts)
+      doc.at_css('meta[name="docsearch:version"]')['content']
     end
   end
 end
diff --git a/lib/docs/scrapers/scikit_learn.rb b/lib/docs/scrapers/scikit_learn.rb
index 973c9d7e..933484f0 100644
--- a/lib/docs/scrapers/scikit_learn.rb
+++ b/lib/docs/scrapers/scikit_learn.rb
@@ -26,8 +26,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('https://scikit-learn.org/stable/documentation.html', opts)
-      doc.at_css('.body h1').content.scan(/([0-9.]+)/)[0][0]
+      get_latest_github_release('scikit-learn', 'scikit-learn', opts)
     end
   end
 end
diff --git a/lib/docs/scrapers/statsmodels.rb b/lib/docs/scrapers/statsmodels.rb
index 3e8a357c..74dcaf9c 100644
--- a/lib/docs/scrapers/statsmodels.rb
+++ b/lib/docs/scrapers/statsmodels.rb
@@ -22,8 +22,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      doc = fetch_doc('http://www.statsmodels.org/stable/', opts)
-      doc.at_css('.sphinxsidebarwrapper h3 + p > b').content[1..-1]
+      get_latest_github_release('statsmodels', 'statsmodels', opts)
     end
   end
 end
diff --git a/lib/docs/scrapers/vagrant.rb b/lib/docs/scrapers/vagrant.rb
index 7400fc8c..fe38cc55 100644
--- a/lib/docs/scrapers/vagrant.rb
+++ b/lib/docs/scrapers/vagrant.rb
@@ -20,8 +20,7 @@ module Docs
     HTML
 
     def get_latest_version(opts)
-      contents = get_github_file_contents('hashicorp', 'vagrant', 'website/config.rb', opts)
-      contents.scan(/version\s+=\s+"([0-9.]+)"/)[0][0]
+      get_github_tags('hashicorp', 'vagrant', opts)[0]['name'][1..-1]
     end
   end
 end