blog/layouts/shortcodes/graphviz.html

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<pre class="graphviz">
{{ with .Get "file" }}
{{ if eq (. | printf "%.1s") "/" }}
{{/* Absolute path are from root of site. */}}
{{ $.Scratch.Set "filepath" . }}
{{ else }}
{{/* Relative paths are from page directory. */}}
{{ $.Scratch.Set "filepath" $.Page.File.Dir }}
{{ $.Scratch.Add "filepath" . }}
{{ end }}
{{ $.Scratch.Get "filepath" | readFile }}
{{ else }}
{{.Inner}}
{{ end }}
</pre>