Automatic Unsplash Copyright Shortcode for Hugo

copyright.html

<!-- 

I use a lot of photos from unsplash as headers. This shortcode works in two ways to make that easier:

1. Standard use
	{{< copyright name="Malte Wingen" href="https://unsplash.com/@maltewingen?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText" >}}

2. Automatic parsing of filename
	{{< copyright >}}

First one allows you to customize the name and url, second one will infer that information from the default unsplash filename.

This assumes the following frontmatter data is present:
	resources: 
		- src: images/markus-winkler--TRcaFMV5vk-unsplash.jpg
  		name: "header"

Hope it helps :) 
-->


{{ $copyName := (.Get "name") }}
{{ $copyHref := (.Get "href") }}

{{- with $.Page.Resources.GetMatch "header" -}}

	{{ if in .Permalink "-unsplash.jpg" }}
		{{ $unsplash := replaceRE $.Page.Permalink "" .Permalink | replaceRE "images/" "" | replaceRE "-unsplash.jpg" ""}}
		{{ $strings := split $unsplash "-" }}

		{{$copyName = printf "%s %s" (index $strings 0) (index $strings 1)}}
		{{$copyHref = replaceRE (printf "%s-%s-" (index $strings 0) (index $strings 1) ) "https://unsplash.com/photos/" $unsplash}}
	{{ else }}

	{{ end }}
{{end }}
<a style="background-color:black;color:white;text-decoration:none;padding:4px 6px;font-family:-apple-system, BlinkMacSystemFont, &quot;San Francisco&quot;, &quot;Helvetica Neue&quot;, Helvetica, Ubuntu, Roboto, Noto, &quot;Segoe UI&quot;, Arial, sans-serif;font-size:12px;font-weight:bold;line-height:1.2;display:inline-block;border-radius:3px" href="{{ $copyHref }}" target="_blank" rel="noopener noreferrer" title="Photo by {{ $copyName }}"><span style="display:inline-block;padding:2px 3px"><svg xmlns="http://www.w3.org/2000/svg" style="height:12px;width:auto;position:relative;vertical-align:middle;top:-1px;fill:white" viewBox="0 0 32 32"><title>Unsplash Logo</title><path d="M20.8 18.1c0 2.7-2.2 4.8-4.8 4.8s-4.8-2.1-4.8-4.8c0-2.7 2.2-4.8 4.8-4.8 2.7.1 4.8 2.2 4.8 4.8zm11.2-7.4v14.9c0 2.3-1.9 4.3-4.3 4.3h-23.4c-2.4 0-4.3-1.9-4.3-4.3v-15c0-2.3 1.9-4.3 4.3-4.3h3.7l.8-2.3c.4-1.1 1.7-2 2.9-2h8.6c1.2 0 2.5.9 2.9 2l.8 2.4h3.7c2.4 0 4.3 1.9 4.3 4.3zm-8.6 7.5c0-4.1-3.3-7.5-7.5-7.5-4.1 0-7.5 3.4-7.5 7.5s3.3 7.5 7.5 7.5c4.2-.1 7.5-3.4 7.5-7.5z"></path></svg></span><span style="display:inline-block;padding:2px 3px">{{ $copyName }}</span></a>