Attempt to load local copy of third party JS/CSS assets if available

Allows to create an entirely offline site.

To use, concatenate vendor JS to `static/js/vendor/main.min.js` and
concatenate vendor CSS to `static/css/vendor/main.min.css`.

See #489

data/assets.toml

@@ -10,57 +10,75 @@
 [js.jQuery]
   version = "3.2.1"
   sri = "sha512-3P8rXCuGJdNZOnUx/03c1jOTnMn3rP63nBip5gOP2qmUh5YAdVAvFZ1E+QLZZbC1rtMrQb+mah3AfYW11RUrWA=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/jquery/%s/jquery.min.js"
 [js.bootstrap]
   version = "3.3.7"
   sri = "sha512-iztkobsvnjKfAtTNdHkGVjAYTrrtlC7mGp/54c40wowO7LhURYl3gVzzcEqGl/qKXQltJ2HwMrdLcNUdo+N/RQ=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/%s/js/bootstrap.min.js"
 [js.highlight]
   version = "9.12.0"
   sri = "sha256-/BfiIkHlHoVihZdc6TFuj7MmJ0TWcWsMXkeDFwhi0zw="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/highlight.js/%s/highlight.min.js"
 [js.mathJax]
   version = "2.7.4"
   sri = "sha256-GhM+5JHb6QUzOQPXSJLEWP7R73CbkisjzK5Eyij4U9w="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/%s/MathJax.js?config=TeX-AMS_CHTML-full"
 [js.isotope]
   version = "3.0.4"
   sri = "sha512-VDBOIlDbuC4VWxGJNmuFRQ0Li0SKkDpmGyuhAG5LTDLd/dJ/S0WMVxriR2Y+CyPL5gzjpN4f/6iqWVBJlht0tQ=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/jquery.isotope/%s/isotope.pkgd.min.js"
 [js.imagesLoaded]
   version = "4.1.3"
   sri = "sha512-umsR78NN0D23AzgoZ11K7raBD+R6hqKojyBZs1w8WvYlsI+QuKRGBx3LFCwhatzBunCjDuJpDHwxD13sLMbpRA=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/%s/imagesloaded.pkgd.min.js"
 [js.autotrack]
   version = "2.4.1"
   sri = "sha512-HUmooslVKj4m6OBu0OgzjXXr+QuFYy/k7eLI5jdeEy/F4RSgMn6XRWRGkFi5IFaFgy7uFTkegp3Z0XnJf3Jq+g=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/autotrack/%s/autotrack.js"
 [js.gmaps]
   version = "0.4.25"
   sri = "sha256-7vjlAeb8OaTrCXZkCNun9djzuB2owUsaO72kXaFDBJs="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/gmaps.js/%s/gmaps.min.js"
 [js.leaflet]
   version = "1.2.0"
   sri = "sha512-lInM/apFSqyy1o6s89K4iQUKg6ppXEgsVxT35HbzUupEVRh2Eu9Wdl4tHj7dZO0s1uvplcYGmt3498TtHq+log=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/leaflet/%s/leaflet.js"
 [js.fancybox]
   version = "3.2.5"
   sri = "sha256-X5PoE3KU5l+JcX+w09p/wHl9AzK333C4hJ2I9S5mD4M="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/fancybox/%s/jquery.fancybox.min.js"
 [js.instantsearch]
   version = "2.9.0"
   sri = "sha256-cJXigylnJlxvAdfFNHeS+IiMcKWS3Rf/cy3bl9bb0ng="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch.min.js"
 
 # CSS
 
 [css.bootstrap]
   version = "3.3.7"
   sri = "sha512-6MXa8B6uaO18Hid6blRMetEIoPqHf7Ux1tnyIQdpt9qI5OACx7C+O3IVTr98vwGnlcg0LOLa02i9Y1HpVhlfiw=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/%s/css/bootstrap.min.css"
 [css.fontAwesome]
   version = "4.7.0"
   sri = "sha512-SfTiTlX6kk+qitfevl/7LibUOeJWlt9rbyDn92a1DqWOw9vWG2MFoays0sgObmWazO5BQPiFucnnEAjpAB+/Sw=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/font-awesome/%s/css/font-awesome.min.css"
 [css.academicons]
   version = "1.8.6"
   sri = "sha256-uFVgMKfistnJAfoCUQigIl+JfUaP47GrRKjf6CTPVmw="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/academicons/%s/css/academicons.min.css"
 [css.leaflet]
   version = "1.2.0"
   sri = "sha512-M2wvCLH6DSRazYeZRIm1JnYyh22purTM+FDB5CsyxtQJYeKq83arPe5wgbNmcFXGqiSH2XR8dT/fJISVA1r/zQ=="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/leaflet/%s/leaflet.css"
 [css.fancybox]
   version = "3.2.5"
   sri = "sha256-ygkqlh3CYSUri3LhQxzdcm0n1EQvH2Y+U5S2idbLtxs="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/fancybox/%s/jquery.fancybox.min.css"
 [css.instantsearch]
   version = "2.9.0"
   sri = "sha256-ZtmLe16p4jS4/2wPwwH6NzJt460SJzgLmhKrYo5yn7g="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch.min.css"
 [css.instantsearchTheme]
   version = "2.9.0"
   sri = "sha256-0vcZrdMQksHcHrY60tPnVK71jnB3wX/JpMcah5BffjA="
+  url = "https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch-theme-algolia.min.css"

exampleSite/config.toml

@@ -139,9 +139,7 @@ enableGitInfo = false
   #
   #   highlight_languages
   #     Add support for highlighting additional languages. Support for
-  #     languages mentioned here will be included in all pages. You
-  #     can also set this variable for a particular page in that
-  #     page's preamble.
+  #     languages mentioned here will be included in all pages.
   #
   #     Example: highlight_languages = ["go", "lisp", "ocaml"]
   #
@@ -156,7 +154,7 @@ enableGitInfo = false
   #   https://cdnjs.com/libraries/highlight.js/
   #
   #   For more info on the highlighting options, see:
-  #   https://sourcethemes.com/academic/post/writing-markdown-latex/#highlighting-options
+  #   https://sourcethemes.com/academic/docs/writing-markdown-latex/#highlighting-options
   highlight = true
   highlight_languages = []
   # highlight_style = "github"

layouts/partials/footer.html

@@ -1,86 +1,73 @@
-    {{ $js := .Site.Data.assets.js }}
+    {{ $scr := $.Scratch }}
 
-    {{ $comments_enabled := and $.Site.DisqusShortname (not (or $.Site.Params.disable_comments $.Params.disable_comments)) }}
-    {{ if and $comments_enabled ($.Site.Params.comment_count | default true) }}
-    <script id="dsq-count-scr" src="//{{ .Site.DisqusShortname }}.disqus.com/count.js" async></script>
-    {{ end }}
-
-    {{ if eq .Site.Params.map 1 }}
-    <script async defer src="//maps.googleapis.com/maps/api/js?key={{ .Site.Params.map_api_key }}"></script>
+    {{/* Config LaTeX math rendering. */}}
+    {{ if or .Params.math .Site.Params.math }}
+    <script type="text/x-mathjax-config">
+      MathJax.Hub.Config({
+        CommonHTML: { linebreaks: { automatic: true } },
+        tex2jax: { inlineMath: [ ['$', '$'], ['\\(','\\)'] ], displayMath: [ ['$$','$$'], ['\\[', '\\]'] ], processEscapes: false },
+        TeX: { noUndefined: { attributes: { mathcolor: 'red', mathbackground: '#FFEEEE', mathsize: '90%' } } },
+        messageStyle: 'none'
+      });
+    </script>
     {{ end }}
 
-    {{ if not .Site.Params.disable_sri }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/jquery/%s/jquery.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.jQuery.version $js.jQuery.sri | safeHTML }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/%s/imagesloaded.pkgd.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.imagesLoaded.version $js.imagesLoaded.sri | safeHTML }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/%s/js/bootstrap.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.bootstrap.version $js.bootstrap.sri | safeHTML }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/jquery.isotope/%s/isotope.pkgd.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.isotope.version $js.isotope.sri | safeHTML }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/fancybox/%s/jquery.fancybox.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.fancybox.version $js.fancybox.sri | safeHTML }}
-    {{ if eq .Site.Params.map 1 }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/gmaps.js/%s/gmaps.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.gmaps.version $js.gmaps.sri | safeHTML }}
-    {{ else if or (eq .Site.Params.map 2) (eq .Site.Params.map 3) }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/leaflet/%s/leaflet.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.leaflet.version $js.leaflet.sri | safeHTML }}
-    {{ end }}
+    {{/* Attempt to load local vendor JS, otherwise load from CDN. */}}
+    {{ $js := .Site.Data.assets.js }}
+    {{ if not ($scr.Get "use_cdn") }}
+      <script src="{{ printf "/js/vendor/%s" ($scr.Get "vendor_js_filename") | relURL }}"></script>
     {{ else }}
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/{{- $js.jQuery.version -}}/jquery.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/{{- $js.imagesLoaded.version -}}/imagesloaded.pkgd.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/{{- $js.bootstrap.version -}}/js/bootstrap.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery.isotope/{{- $js.isotope.version -}}/isotope.pkgd.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/fancybox/{{- $js.fancybox.version -}}/jquery.fancybox.min.js"></script>
-    {{ if eq .Site.Params.map 1 }}
-    <script src="//cdnjs.cloudflare.com/ajax/libs/gmaps.js/{{- $js.gmaps.version -}}/gmaps.min.js"></script>
-    {{ else if or (eq .Site.Params.map 2) (eq .Site.Params.map 3) }}
-    <script src="//cdnjs.cloudflare.com/ajax/libs/leaflet/{{- $js.leaflet.version -}}/leaflet.js"></script>
-    {{ end }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.jQuery.url $js.jQuery.version) $js.jQuery.sri | safeHTML }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.imagesLoaded.url $js.imagesLoaded.version) $js.imagesLoaded.sri | safeHTML }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.bootstrap.url $js.bootstrap.version) $js.bootstrap.sri | safeHTML }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.isotope.url $js.isotope.version) $js.isotope.sri | safeHTML }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.fancybox.url $js.fancybox.version) $js.fancybox.sri | safeHTML }}
+
+      {{ if $.Scratch.Get "highlight_enabled" }}
+        {{ $v := $js.highlight.version }}
+        {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.highlight.url $v) $js.highlight.sri | safeHTML }}
+        {{ range .Site.Params.highlight_languages }}
+        <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/languages/{{ . }}.min.js"></script>
+        {{ end }}
+      {{ end }}
+
+      {{/* LaTeX math rendering. */}}
+      {{ if or .Params.math .Site.Params.math }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" async></script>" (printf $js.mathJax.url $js.mathJax.version) $js.mathJax.sri | safeHTML }}
+      {{ end }}
     {{ end }}
+
     <script src="{{ "/js/hugo-academic.js" | relURL }}"></script>
     {{ range .Site.Params.custom_js }}
     <script src="{{ "/js/" | relURL }}{{ . }}"></script>
     {{ end }}
 
-    <!-- Code highlighting -->
-    {{ if $.Scratch.Get "highlight_enabled" }}
-      {{ $v := $js.highlight.version }}
-      {{ if not .Site.Params.disable_sri }}
-      {{ printf "<script src=\"//cdnjs.cloudflare.com/ajax/libs/highlight.js/%s/highlight.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $v $js.highlight.sri | safeHTML }}
-      {{ else }}
-      <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/highlight.min.js"></script>
-      {{ end }}
-
-      {{ range .Site.Params.highlight_languages }}
-      <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/languages/{{ . }}.min.js"></script>
-      {{ end }}
-
-      {{ range .Params.highlight_languages }}
-      {{/* Do not double-include languages that are in both .Site.Params and .Params.
-           If Hugo ever grows a "union" function for set union, this range clause can be merged with the one above. */}}
-        {{ if not (in $.Site.Params.highlight_languages .) }}
-        <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/languages/{{ . }}.min.js"></script>
-        {{ end }}
+    {{/* Maps JS. */}}
+    {{ if eq .Site.Params.map 1 }}
+      <script async defer src="//maps.googleapis.com/maps/api/js?key={{ .Site.Params.map_api_key }}"></script>
+      {{ if ($scr.Get "use_cdn") }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.gmaps.url $js.gmaps.version) $js.gmaps.sri | safeHTML }}
       {{ end }}
-
-      <script>hljs.initHighlightingOnLoad();</script>
+    {{ else if and (or (eq .Site.Params.map 2) (eq .Site.Params.map 3)) ($scr.Get "use_cdn") }}
+      {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.leaflet.url $js.leaflet.version) $js.leaflet.sri | safeHTML }}
     {{ end }}
 
-    <!-- LaTeX math rendering -->
-    {{ if or .Params.math .Site.Params.math }}
-    <script type="text/x-mathjax-config">
-      MathJax.Hub.Config({
-        CommonHTML: { linebreaks: { automatic: true } },
-        tex2jax: { inlineMath: [ ['$', '$'], ['\\(','\\)'] ], displayMath: [ ['$$','$$'], ['\\[', '\\]'] ], processEscapes: false },
-        TeX: { noUndefined: { attributes: { mathcolor: 'red', mathbackground: '#FFEEEE', mathsize: '90%' } } },
-        messageStyle: 'none'
-      });
-    </script>
-    {{ if not .Site.Params.disable_sri }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/mathjax/%s/MathJax.js?config=TeX-AMS_CHTML-full\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.mathJax.version $js.mathJax.sri | safeHTML }}
-    {{ else }}
-    <script async src="//cdnjs.cloudflare.com/ajax/libs/mathjax/{{- $js.mathJax.version -}}/MathJax.js?config=TeX-AMS_CHTML-full"></script>
+    {{/* Comments JS. */}}
+    {{ $comments_enabled := and $.Site.DisqusShortname (not (or $.Site.Params.disable_comments $.Params.disable_comments)) }}
+    {{ if and $comments_enabled ($.Site.Params.comment_count | default true) }}
+    <script id="dsq-count-scr" src="//{{ .Site.DisqusShortname }}.disqus.com/count.js" async></script>
     {{ end }}
+
+    {{/* Initialise code highlighting. */}}
+    {{ if $.Scratch.Get "highlight_enabled" }}
+    <script>hljs.initHighlightingOnLoad();</script>
     {{ end }}
 
     {{/* Algolia search engine. */}}
     {{ if eq .Site.Params.search.engine 1 }}
-    {{ printf "<script src=\"https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch.min.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $js.instantsearch.version $js.instantsearch.sri | safeHTML }}
+    {{ if ($scr.Get "use_cdn") }}
+    {{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.instantsearch.url $js.instantsearch.version) $js.instantsearch.sri | safeHTML }}
+    {{ end }}
     <script>
       const content_type = {
         'post': {{ i18n "posts" }},

layouts/partials/header.html

@@ -29,55 +29,62 @@
   <link rel="alternate" hreflang="{{ .Site.LanguageCode | default "en-us" }}" href="{{ .Permalink }}">
 
   {{ partial "css/parse_theme.css" . }}
-  {{ $sri := .Site.Data.assets }}
+  {{ $css := .Site.Data.assets.css }}
+  {{ $js := .Site.Data.assets.js }}
   {{ if ne ($scr.Get "primary") "#fff" }}
   <meta name="theme-color" content="{{ $scr.Get "primary" }}">
   {{ end }}
-  {{/* Default to enabling highlighting, but allow the user to override it in .Params or .Site.Params.
-       Use $scr to store "highlight_enabled", so that we can read it again in footer.html. */}}
-  {{ $scr.Set "highlight_enabled" true }}
-  {{ if isset .Params "highlight" }}
-    {{ $scr.Set "highlight_enabled" .Params.highlight }}
-  {{ else if isset .Site.Params "highlight" }}
-    {{ $scr.Set "highlight_enabled" .Site.Params.highlight }}
-  {{ end }}
-  {{ if $scr.Get "highlight_enabled" }}
-    {{ $v := $sri.js.highlight.version }}
-    {{ with .Site.Params.highlight_style }}
-    <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/{{ . }}.min.css">
-    {{ else }}
-      {{ if eq ($scr.Get "light") true }}
-        <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/github.min.css">
+
+  {{/* Attempt to load local vendor CSS, otherwise load from CDN. */}}
+  {{ $scr.Set "vendor_css_filename" "main.min.css" }}
+  {{ $scr.Set "vendor_js_filename" "main.min.js" }}
+  {{ if and (fileExists (printf "static/css/vendor/%s" ($scr.Get "vendor_css_filename"))) (fileExists (printf "static/js/vendor/%s" ($scr.Get "vendor_js_filename"))) }}
+    {{ $scr.Set "use_cdn" 0 }}
+    <link rel="stylesheet" href="{{ printf "/css/vendor/%s" ($scr.Get "vendor_css_filename") | relURL }}">
+  {{ else }}
+    {{ $scr.Set "use_cdn" 1 }}
+    {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.bootstrap.url $css.bootstrap.version) $css.bootstrap.sri | safeHTML }}
+    {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.academicons.url $css.academicons.version) $css.academicons.sri | safeHTML }}
+    {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.fontAwesome.url $css.fontAwesome.version) $css.fontAwesome.sri | safeHTML }}
+    {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.fancybox.url $css.fancybox.version) $css.fancybox.sri | safeHTML }}
+
+    {{/* Default to enabling highlighting, but allow the user to override it in .Params or .Site.Params.
+         Use $scr to store "highlight_enabled", so that we can read it again in footer.html. */}}
+    {{ $scr.Set "highlight_enabled" true }}
+    {{ if isset .Params "highlight" }}
+      {{ $scr.Set "highlight_enabled" .Params.highlight }}
+    {{ else if isset .Site.Params "highlight" }}
+      {{ $scr.Set "highlight_enabled" .Site.Params.highlight }}
+    {{ end }}
+    {{ if $scr.Get "highlight_enabled" }}
+      {{ $v := $css.highlight.version }}
+      {{ with .Site.Params.highlight_style }}
+      <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/{{ . }}.min.css">
       {{ else }}
-        <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/dracula.min.css">
+        {{ if eq ($scr.Get "light") true }}
+          <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/github.min.css">
+        {{ else }}
+          <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/{{ $v }}/styles/dracula.min.css">
+        {{ end }}
       {{ end }}
     {{ end }}
+
+    {{ if or (eq .Site.Params.map 2) (eq .Site.Params.map 3) }}
+    {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.leaflet.url $css.leaflet.version) $css.leaflet.sri | safeHTML }}
+    {{ end }}
+
+    {{ if eq .Site.Params.search.engine 1 }}
+      {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.instantsearch.url $css.instantsearch.version) $css.instantsearch.sri | safeHTML }}
+      {{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.instantsearchTheme.url $css.instantsearchTheme.version) $css.instantsearchTheme.sri | safeHTML }}
+    {{ end }}
+
   {{ end }}
-  {{ if eq .Site.Params.search.engine 1 }}
-    {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.instantsearch.version $sri.css.instantsearch.sri | safeHTML }}
-    {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/instantsearch.js/%s/instantsearch-theme-algolia.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.instantsearchTheme.version $sri.css.instantsearchTheme.sri | safeHTML }}
-  {{ end }}
-  {{ if not .Site.Params.disable_sri }}
-  {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/%s/css/bootstrap.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.bootstrap.version $sri.css.bootstrap.sri | safeHTML }}
-  {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/academicons/%s/css/academicons.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.academicons.version $sri.css.academicons.sri | safeHTML }}
-  {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/%s/css/font-awesome.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.fontAwesome.version $sri.css.fontAwesome.sri | safeHTML }}
-  {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/fancybox/%s/jquery.fancybox.min.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.fancybox.version $sri.css.fancybox.sri | safeHTML }}
-  {{ if or (eq .Site.Params.map 2) (eq .Site.Params.map 3) }}
-  {{ printf "<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/leaflet/%s/leaflet.css\" integrity=\"%s\" crossorigin=\"anonymous\">" $sri.css.leaflet.version $sri.css.leaflet.sri | safeHTML }}
-  {{ end }}
-  {{ else }}
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/{{- $sri.css.bootstrap.version -}}/css/bootstrap.min.css">
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/academicons/{{- $sri.css.academicons.version -}}/css/academicons.min.css">
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/{{- $sri.css.fontAwesome.version -}}/css/font-awesome.min.css">
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/fancybox/{{- $sri.css.fancybox.version -}}/jquery.fancybox.min.css" media="screen">
-  {{ if or (eq .Site.Params.map 2) (eq .Site.Params.map 3) }}
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/leaflet/{{- $sri.css.leaflet.version -}}/leaflet.css">
-  {{ end }}
-  {{ end }}
-  {{/* We cannot use SRI with Google Fonts because the CSS is dynamically generated according to the user agent */}}
+
+  {{/* We cannot use SRI with Google Fonts because the CSS is dynamically generated according to the user agent. */}}
   {{ with ($scr.Get "google_fonts") }}
   <link rel="stylesheet" href="{{ printf "//fonts.googleapis.com/css?family=%s" . }}">
   {{ end }}
+
   <link rel="stylesheet" href="{{ "styles.css" | relLangURL }}">
   {{ range .Site.Params.custom_css }}
   <link rel="stylesheet" href="{{ "/css/" | relURL }}{{ . }}">
@@ -95,10 +102,8 @@
       ga('send', 'pageview');
     </script>
     <script async src="//www.google-analytics.com/analytics.js"></script>
-    {{ if not .Site.Params.disable_sri }}
-    {{ printf "<script async src=\"https://cdnjs.cloudflare.com/ajax/libs/autotrack/%s/autotrack.js\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" $sri.js.autotrack.version $sri.js.autotrack.sri | safeHTML }}
-    {{ else }}
-    <script async src="//cdnjs.cloudflare.com/ajax/libs/autotrack/{{- $sri.js.autotrack.version -}}/autotrack.js"></script>
+    {{ if ($scr.Get "use_cdn") }}
+    {{ printf "<script async src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\"></script>" (printf $js.autotrack.url $js.autotrack.version) $js.autotrack.sri | safeHTML }}
     {{ end }}
   {{ end }}
   {{ end }}