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{{ $paginator := .paginator }}
{{ $outer := .outer}}
<!-- Thanks to https://glennmccomb.com/articles/how-to-build-custom-hugo-pagination/ -->
<!-- Show first and last link-->
{{ $show_first_last := $outer.Site.Params.Posts.showFirstLast | default false }}
<!-- Number of links either side of the current page. -->
{{ $adjacent_links := $outer.Site.Params.Posts.paginationPages | default 2 }}
<!-- $max_links = ($adjacent_links * 2) + 1 -->
{{ $max_links := (add (mul $adjacent_links 2) 1) }}
<!-- $lower_limit = $adjacent_links + 1 -->
{{ $lower_limit := (add $adjacent_links 1) }}
<!-- $upper_limit = $paginator.TotalPages - $adjacent_links -->
{{ $upper_limit := (sub $paginator.TotalPages $adjacent_links) }}
{{ if gt $paginator.TotalPages 1 }}
<footer>
<div class="pagination">
<ul class="pagination">
<!-- First page. -->
{{ if $show_first_last }}
{{ if ne $paginator.PageNumber 1 }}
<li>
<a href="{{ $paginator.First.URL }}" class="extra first">
{{ i18n "PAGINATION_FIRST" . }}
</a>
</li>
{{ end }}
{{ end }}
<!-- Previous page. -->
{{ if $paginator.HasPrev }}
<li>
<a href="{{ $paginator.Prev.URL }}" class="previous">
{{ i18n "PAGINATION_PREVIOUS" . }}
</a>
</li>
{{ end }}
<!-- Page numbers. -->
{{ range $paginator.Pagers }}
{{ $outer.Scratch.Set "page_number_flag" false }}
<!-- Advanced page numbers. -->
{{ if gt $paginator.TotalPages $max_links }}
<!-- Lower limit pages. -->
<!-- If the user is on a page which is in the lower limit. -->
{{ if le $paginator.PageNumber $lower_limit }}
<!-- If the current loop page is less than max_links. -->
{{ if le .PageNumber $max_links }}
{{ $outer.Scratch.Set "page_number_flag" true }}
{{ end }}
<!-- Upper limit pages. -->
<!-- If the user is on a page which is in the upper limit. -->
{{ else if ge $paginator.PageNumber $upper_limit }}
<!-- If the current loop page is greater than total pages minus $max_links -->
{{ if gt .PageNumber (sub $paginator.TotalPages $max_links) }}
{{ $outer.Scratch.Set "page_number_flag" true }}
{{ end }}
<!-- Middle pages. -->
{{ else }}
{{ if and ( ge .PageNumber (sub $paginator.PageNumber $adjacent_links) ) ( le .PageNumber (add $paginator.PageNumber $adjacent_links) ) }}
{{ $outer.Scratch.Set "page_number_flag" true }}
{{ end }}
{{ end }}
<!-- Simple page numbers. -->
{{ else }}
{{ $outer.Scratch.Set "page_number_flag" true }}
{{ end }}
<!-- Output page numbers. -->
{{ if eq ($outer.Scratch.Get "page_number_flag") true }}
<li>
<a href="{{ .URL }}" class="page{{ if eq . $paginator }} active{{ end }}">
{{ .PageNumber }}
</a>
</li>
{{ end }}
{{ end }}
<!-- Next page. -->
{{ if $paginator.HasNext }}
<li>
<a href="{{ $paginator.Next.URL }}" class="next">
{{ i18n "PAGINATION_NEXT" . }}
</a>
</li>
{{ end }}
<!-- Last page. -->
{{ if $show_first_last }}
{{ if ne $paginator.PageNumber $paginator.TotalPages }}
<li>
<a href="{{ $paginator.Last.URL }}" class="extra last">
{{ i18n "PAGINATION_LAST" . }}
</a>
</li>
{{ end }}
{{ end }}
</ul>
</div>
</footer>
{{ end }}
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