mirror of
https://github.com/imfing/hextra.git
synced 2025-10-31 15:44:51 -04:00
93 lines
3.8 KiB
HTML
93 lines
3.8 KiB
HTML
{{- /* KaTeX CSS loader
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Behavior (driven by site.params.math.katex):
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- base (remote URL) + optional css:
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- Construct remote CSS URL: "{{ base }}/{{ css | default "katex[.min].css" }}".
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- Fetch via resources.GetRemote, rewrite font URLs to "{{ base }}/fonts/...".
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- Build and fingerprint; emit <link rel="stylesheet" integrity>.
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- base (local path or not set) + css (asset path):
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- Read CSS from Hugo assets via resources.Get; DO NOT rewrite font URLs.
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- Build and fingerprint; emit <link rel="stylesheet" integrity>.
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- base (local path) only (no css):
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- Link directly to "{{ base }}/katex[.min].css" (no processing).
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- Nothing set:
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- Default to CDN latest base; same as remote path above.
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Additional:
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- assets: optional list to publish extra assets. CSS/JS get tags with integrity (JS loads async).
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*/ -}}
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{{- $noop := .WordCount -}}
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{{- $katexBase := "" -}}
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{{- with site.Params.math.katex.base -}}
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{{- $katexBase = . -}}
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{{- else -}}
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{{- if not site.Params.math.katex.css -}}
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{{- $katexBase = "https://cdn.jsdelivr.net/npm/katex@latest/dist" -}}
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{{- end -}}
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{{- end -}}
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{{- $katexCssAsset := "" -}}
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{{- with site.Params.math.katex.css -}}
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{{- $katexCssAsset = . -}}
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{{- end -}}
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{{- $s := newScratch -}}
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{{- $isRemoteBase := or (strings.HasPrefix $katexBase "http://") (strings.HasPrefix $katexBase "https://") -}}
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{{- /* CSS retrieval consolidated: get raw CSS from either local asset or remote, then process once */ -}}
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{{- $minSuffix := cond hugo.IsProduction ".min" "" -}}
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{{- if $isRemoteBase -}}
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{{- $cssPath := cond (ne $katexCssAsset "") $katexCssAsset (printf "katex%s.css" $minSuffix) -}}
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{{- $katexCssUrl := printf "%s/%s" $katexBase $cssPath -}}
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{{- with try (resources.GetRemote $katexCssUrl) -}}
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{{- with .Err -}}
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{{- errorf "Could not retrieve KaTeX css file from %s. Reason: %s." $katexCssUrl . -}}
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{{- else with .Value -}}
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{{- $s.Set "katexCssValue" .Content -}}
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{{- end -}}
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{{- end -}}
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{{- else if $katexCssAsset -}}
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{{- with resources.Get $katexCssAsset -}}
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{{- $s.Set "katexCssValue" .Content -}}
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{{- else -}}
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{{- errorf "KaTeX css asset not found at %q" $katexCssAsset -}}
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{{- end -}}
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{{- end -}}
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{{- with $s.Get "katexCssValue" -}}
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{{- $cssContent := . -}}
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{{- if $isRemoteBase -}}
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{{- $fontPattern := "url(fonts/" -}}
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{{- $fontSub := printf "url(%s/fonts/" $katexBase -}}
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{{- $cssContent = strings.Replace $cssContent $fontPattern $fontSub -}}
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{{- end -}}
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{{- with resources.FromString (printf "css/katex%s.css" $minSuffix) $cssContent -}}
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{{- $css := . | fingerprint "sha512" -}}
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<link rel="stylesheet" href="{{ $css.RelPermalink }}" integrity="{{ $css.Data.Integrity }}" />
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{{- end -}}
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{{- else -}}
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{{- if not $isRemoteBase -}}
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{{- $cssPath := cond (ne $katexCssAsset "") $katexCssAsset (printf "katex%s.css" $minSuffix) -}}
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<link rel="stylesheet" href="{{ printf "%s/%s" $katexBase $cssPath }}" />
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{{- end -}}
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{{- end -}}
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{{- /* Optionally publish files (fonts, css, js, etc.) from assets and emit tags for css/js with integrity and crossorigin */ -}}
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{{- with site.Params.math.katex.assets -}}
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{{- range . -}}
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{{- with resources.Get . -}}
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{{- $name := .Name | lower -}}
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{{- if strings.HasSuffix $name ".css" -}}
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{{- $built := . | fingerprint "sha512" -}}
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<link rel="stylesheet" href="{{ $built.RelPermalink }}" integrity="{{ $built.Data.Integrity }}" crossorigin="anonymous" />
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{{- else if or (strings.HasSuffix $name ".js") (strings.HasSuffix $name ".mjs") -}}
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{{- $built := . | fingerprint "sha512" -}}
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<script src="{{ $built.RelPermalink }}" async integrity="{{ $built.Data.Integrity }}" crossorigin="anonymous"></script>
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{{- else -}}
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{{- .Publish -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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