/
site_head.html
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/
site_head.html
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{{ $scr := .Scratch }}
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
{{ $is_sponsor := site.Params.i_am_a_sponsor | default false }}
{{ $hide_generator := site.Params.power_ups.hide_generator | default false }}
{{ if not (and $is_sponsor $hide_generator) }}
<meta name="generator" content="Wowchemy {{ site.Data.wowchemy.version }} for Hugo" />
{{ end }}
{{/* EXTENSIBILITY HOOK: HEAD-START */}}
{{ partial "functions/get_hook" (dict "hook" "head-start" "context" .) }}
{{ if .Params.private }}
<meta name="robots" content="noindex" />
{{- end -}}
{{/* Parse theme and font */}}
{{ partial "functions/parse_theme" . }}
{{/* Pre-connect to Google Fonts if the site's Font Theme uses them. */}}
{{ with ($scr.Get "google_fonts") }}
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
{{ end }}
{{/* Load Google Fonts if the site's Font Theme uses them. */}}
{{/* Note: we cannot use SRI with Google Fonts because the CSS is dynamically generated according to the user agent. */}}
{{ with ($scr.Get "google_fonts") }}
{{ if hasPrefix . "family=" }}
{{/* If `google_fonts` starts with "family=", use API v2 (https://developers.google.com/fonts/docs/css2) */}}
<link rel="preload" as="style" {{ printf "href=\"https://fonts.googleapis.com/css2?%s&display=swap\"" . | safeHTMLAttr }}>
<link rel="stylesheet" {{ printf "href=\"https://fonts.googleapis.com/css2?%s&display=swap\"" . | safeHTMLAttr }} media="print" onload="this.media='all'">
{{ else }}
{{ errorf "There is a new version of Google Fonts. Learn how to upgrade your font pack at https://wowchemy.com/docs/customization/#custom-font" }}
{{ end }}
{{ end }}
{{ if site.Params.marketing.analytics.google_optimize | and hugo.IsProduction }}
<script src="https://www.googleoptimize.com/optimize.js?id={{ site.Params.marketing.analytics.google_optimize }}"></script>
{{- end -}}
{{/* Attempt to load superuser. */}}
{{ $superuser_name := "" }}
{{ $superuser_username := "" }}
{{ $superuser_role := "" }}
{{ range first 1 (where (where site.Pages "Section" "authors") "Params.superuser" true) }}
{{ $superuser_name = .Title }}
{{ $superuser_username = path.Base .File.Dir }}
{{ $superuser_role = .Params.role }}
{{ end }}
{{ $scr.Set "superuser_username" $superuser_username }}{{/* Set superuser globally for page_author.html. */}}
{{ with $superuser_name }}<meta name="author" content="{{ . }}" />{{ end }}
{{/* Generate page description. */}}
{{ $desc := "" }}
{{ if .Params.summary }}
{{ $desc = .Params.summary }}
{{ else if .Params.abstract }}
{{ $desc = .Params.abstract }}
{{ else if .IsPage }}
{{ $desc = .Summary }}
{{ else if site.Params.marketing.seo.description }}
{{ $desc = site.Params.marketing.seo.description }}
{{ else }}
{{ $desc = $superuser_role }}
{{ end }}
<meta name="description" content="{{ $desc }}" />
{{ range .Translations }}
<link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}" />
{{ end }}
<link rel="alternate" hreflang="{{ site.LanguageCode | default "en-us" }}" href="{{ .Permalink }}" />
{{ $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 }}
{{/* Config LaTeX math rendering. */}}
{{ if or .Params.math site.Params.features.math.enable }}
{{ $mathjax_config := resources.Get "js/mathjax-config.js" }}
<script src="{{ $mathjax_config.RelPermalink }}"></script>
{{ end }}
{{/* Attempt to load local vendor CSS, otherwise load from CDN. */}}
{{/* Only load non-essential CSS in this media-swapping way */}}
{{- $stylesheets := slice -}}
{{- $lib_names := slice "fontawesome/all.min" -}}
{{- range $lib_names -}}
{{- $stylesheets = $stylesheets | append (resources.Get (printf "css/libs/%s.css" . ) ) -}}
{{- end -}}
{{ $stylesheets = $stylesheets | resources.Concat "css/vendor-bundle.css" | minify }}
{{- if eq (getenv "WC_POST_CSS") "true" -}}
{{- $stylesheets = $stylesheets | postCSS -}}
{{- end -}}
{{- if hugo.IsProduction -}}
{{- $stylesheets = $stylesheets | fingerprint "md5" -}}
{{- end -}}
{{- if eq (getenv "WC_POST_CSS") "true" -}}
{{/* PostProcess must be last action in the pipeline */}}
{{- $stylesheets = $stylesheets | resources.PostProcess -}}
{{- end -}}
<link rel="stylesheet" href="{{$stylesheets.RelPermalink}}" media="print" onload="this.media='all'">
{{ $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 }}
{{ if site.Params.extensions.academicons.enable }}
{{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" media=\"print\" onload=\"this.media='all'\">" (printf $css.academicons.url $css.academicons.version) $css.academicons.sri | safeHTML }}
{{ end }}
{{/* Workaround `.HasShortcode "gallery"` not parsing page resources (widget page sections) */}}
{{ $has_gallery := false }}
{{/* Note: unless there is a root `/index.md` with `type: widget_page`, Hugo treats homepage as `page` type. */}}
{{ if (eq .Type "widget_page") | or (and .IsHome (eq .Type "page")) }}
{{/* Check if widget page sections use a gallery */}}
{{ $page := "/home/index.md" }}
{{ $context := cond .IsHome (site.GetPage $page) . }}
{{ range $context.Resources.ByType "page" }}
{{ if .HasShortcode "gallery" }}
{{ $has_gallery = true }}
{{ end }}
{{ end }}
{{ else }}
{{/* Single page */}}
{{ if .HasShortcode "gallery" }}
{{ $has_gallery = true }}
{{ end }}
{{ end }}
{{ $scr.Set "HasNestedGalleryShortcode" $has_gallery }}
{{ if $has_gallery | or site.Params.require_fancybox }}
{{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" media=\"print\" onload=\"this.media='all'\">" (printf $css.fancybox.url $css.fancybox.version) $css.fancybox.sri | safeHTML }}
{{ end }}
{{/* Maps CSS. */}}
{{ $map_provider := lower site.Params.features.map.provider }}
{{ if in (slice "mapnik" "mapbox") $map_provider }}
{{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" media=\"print\" onload=\"this.media='all'\">" (printf $css.leaflet.url $css.leaflet.version) $css.leaflet.sri | safeHTML }}
{{ end }}
{{ if eq (lower site.Params.features.search.provider) "algolia" }}
{{ printf "<link rel=\"stylesheet\" href=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\">" (printf $css.instantsearch.url $css.instantsearch.version) $css.instantsearch.sri | safeHTML }}
{{ end }}
{{/* Load async scripts. */}}
{{ range $k, $v := site.Data.assets.js }}
{{/* TODO: investigate why `where ... "async" true` does not work. */}}
{{ $load := $v.async }}
{{/* Only load MathJax if required. */}}
{{ if (eq $k "mathJax") | and (not (or $.Params.math site.Params.features.math.enable)) }}
{{ $load = false }}
{{ end }}
{{ if $load }}
{{ printf "<script src=\"%s\" integrity=\"%s\" crossorigin=\"anonymous\" async></script>" (printf $v.url $v.version) $v.sri | safeHTML }}
{{ end }}
{{ end }}
{{ end }}
{{/* Load WC style */}}
{{ $license := printf "/*! Wowchemy v%s | https://wowchemy.com/ */\n" site.Data.wowchemy.version }}
{{ $license := $license | printf "%s/*! Copyright 2016-present George Cushen (https://georgecushen.com/) */\n" }}
{{ $license := $license | printf "%s/*! License: https://github.com/wowchemy/wowchemy-hugo-themes/blob/main/LICENSE.md */\n" }}
{{ $css_bundle_head := $license | resources.FromString "css/bundle-head.css" }}
{{ $css_options := dict "targetPath" "css/wowchemy.css" }}
{{- if hugo.IsProduction -}}
{{- $css_options = merge $css_options (dict "outputStyle" "compressed") -}}
{{- end -}}
{{ $sass_template := resources.Get "scss/main.scss" }}
{{ $style := $sass_template | resources.ExecuteAsTemplate "main_parsed.scss" . | toCSS $css_options }}
{{- if hugo.IsProduction -}}
{{- $style = $style | minify -}}
{{- end -}}
{{ $style := slice $css_bundle_head $style | resources.Concat "css/wowchemy.css" }}
{{- if eq (getenv "WC_POST_CSS") "true" -}}
{{- $style = $style | postCSS -}}
{{- end -}}
{{- if hugo.IsProduction -}}
{{- $style = $style | fingerprint "md5" -}}
{{- end -}}
{{- if eq (getenv "WC_POST_CSS") "true" -}}
{{/* PostProcess must be last action in the pipeline */}}
{{- $style = $style | resources.PostProcess -}}
{{- end -}}
<link rel="stylesheet" href="{{ $style.RelPermalink }}" />
{{/* Hugo Chroma Syntax Highlighter Initialization */}}
{{/* TODO: optimize to only include the Chroma CSS themes when the page has code blocks. */}}
{{ $hl_theme_light := site.Params.features.syntax_highlighter.theme_light | default "github-light" }}
{{ $hl_theme_dark := site.Params.features.syntax_highlighter.theme_dark | default "dracula" }}
{{ $hl_theme_light_path := printf "css/libs/chroma/%s.css" $hl_theme_light }}
{{ $hl_theme_dark_path := printf "css/libs/chroma/%s.css" $hl_theme_dark }}
{{ if not (fileExists (printf "assets/%s" $hl_theme_light_path)) | or (not (fileExists (printf "assets/%s" $hl_theme_dark_path))) }}
{{ errorf "Hugo Chroma themes %s.css and %s.css not found in `css/libs/chroma/`. See https://gohugo.io/commands/hugo_gen_chromastyles/" $hl_theme_light $hl_theme_dark }}
{{ else }}
{{ $hl_theme_light_css := resources.Get $hl_theme_light_path | minify }}
{{ $hl_theme_dark_css := resources.Get $hl_theme_dark_path | minify }}
<link rel="stylesheet" href="{{ $hl_theme_light_css.RelPermalink }}" title="hl-light" media="print" onload="this.media='all'" {{ if ne ($scr.Get "light") true }}disabled{{end}}>
<link rel="stylesheet" href="{{ $hl_theme_dark_css.RelPermalink }}" title="hl-dark" media="print" onload="this.media='all'" {{ if eq ($scr.Get "light") true }}disabled{{end}}>
{{ end }}
{{/* Marketing */}}
{{ with site.Params.marketing.verification.google }}
<meta name="google-site-verification" content="{{ . }}" />
{{- end -}}
{{ with site.Params.marketing.verification.baidu }}
<meta name="baidu-site-verification" content="{{ . }}" />
{{- end -}}
{{ with site.Params.marketing.verification.bing }}
<meta name="msvalidate.01" content="{{ . }}" />
{{- end -}}
{{ partial "marketing/google_analytics" . }}
{{ partial "marketing/google_tag_manager" . }}
{{ partial "marketing/microsoft_clarity" . }}
{{ partial "marketing/baidu_tongji" . }}
{{/* Netlify Identity integration. */}}
{{ $use_cms := templates.Exists "wowchemycms/single.wowchemycms_config.yml" | default (site.Params.extensions.cms.enable | default false) }}
{{ if .IsHome | and $use_cms }}
<script src="https://identity.netlify.com/v1/netlify-identity-widget.js"></script>
{{ end }}
{{/* RSS Feed */}}
{{ with .OutputFormats.Get "RSS" }}
<link rel="alternate" href="{{ .RelPermalink }}" type="application/rss+xml" title="{{ site.Title }}" />
{{ end }}
{{/* Progressive Web App (PWA) Manifest */}}
{{ with site.Home.OutputFormats.Get "WebAppManifest" }}
<link rel="manifest" href="{{ .RelPermalink }}" />
{{ end }}
{{/* Progressive Web App (PWA) Icon */}}
<link rel="icon" type="image/png" href="{{ (partial "functions/get_icon" 32).RelPermalink }}" />
<link rel="apple-touch-icon" type="image/png" href="{{ (partial "functions/get_icon" 180).RelPermalink }}" />
<link rel="canonical" href="{{ .Permalink }}" />
{{/* Get page image for sharing. */}}
{{ $sharing_image := resources.GetMatch (path.Join "media" "sharing.*") }}
{{ $featured_image := (.Resources.ByType "image").GetMatch "*featured*" }}
{{ $avatar_image := (.Resources.ByType "image").GetMatch "avatar*" }}
{{ $has_logo := fileExists "assets/media/logo.png" | or (fileExists "assets/media/logo.svg") }}
{{ $og_image := "" }}
{{ $twitter_card := "summary_large_image" }}
{{ if (and (eq .Kind "term") $avatar_image) }}
{{/* Match image processing in About widget to prevent generating more images than necessary. */}}
{{ $og_image = ($avatar_image.Fill "270x270 Center").Permalink }}
{{ $twitter_card = "summary" }}
{{ else if $featured_image }}
{{ $og_image = $featured_image.Permalink }}
{{ else if $sharing_image }}
{{ $og_image = $sharing_image.Permalink }}
{{ else if $has_logo }}
{{ $og_image = (partial "functions/get_logo" (dict "constraint" "fit" "size" 300)).Permalink }}
{{ $twitter_card = "summary" }}
{{ else }}
{{ $og_image = (partial "functions/get_icon" 512).Permalink }}
{{ $twitter_card = "summary" }}
{{ end }}
{{ $scr.Set "og_image" $og_image }}{{/* Set `og_image` globally for `rss.xml`. */}}
{{ $title := "" }}
{{ with .Params.seo.title }}
{{ $title = replace . "{brand}" site.Title }}
{{ else }}
{{ $title = .Title | default site.Title }}
{{ if ne $title site.Title }}{{ $title = printf "%s | %s" $title site.Title }}{{ end }}
{{ end }}
<meta property="twitter:card" content="{{ $twitter_card }}" />
{{ with site.Params.marketing.seo.twitter }}
<meta property="twitter:site" content="@{{ . }}" />
<meta property="twitter:creator" content="@{{ . }}" />
{{ end }}
<meta property="og:site_name" content="{{ site.Title }}" />
<meta property="og:url" content="{{ .Permalink }}" />
<meta property="og:title" content="{{ $title }}" />
<meta property="og:description" content="{{ $desc }}" />
{{- with $og_image -}}
<meta property="og:image" content="{{ . }}" />
<meta property="twitter:image" content="{{ . }}" />
{{- end -}}
<meta property="og:locale" content="{{ site.LanguageCode | default "en-us" }}" />
{{ if .IsPage }}
{{ if not .PublishDate.IsZero }}
<meta
property="article:published_time"
content="{{ .PublishDate.Format "2006-01-02T15:04:05-07:00" | safeHTML }}"
/>
{{ else if not .Date.IsZero }}
<meta property="article:published_time" content="{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTML }}" />
{{ end }}
{{ if not .Lastmod.IsZero }}<meta property="article:modified_time" content="{{ .Lastmod.Format "2006-01-02T15:04:05-07:00" | safeHTML }}">{{ end }}
{{ else }}
{{ if not .Date.IsZero }}
<meta property="og:updated_time" content="{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTML }}" />
{{ end }}
{{ end }}
{{ partial "jsonld/main" (dict "page" . "summary" $desc) }}
{{ partial "cookie_consent" . }}
<title>{{$title}}</title>
{{/* EXTENSIBILITY HOOK: HEAD-END */}}
{{/* Deprecated custom_head hook */}}
{{ if templates.Exists "partials/custom_head" }}
{{ partial "custom_head" . }}
{{ end }}
{{ partial "functions/get_hook" (dict "hook" "head-end" "context" .) }}
</head>