Absolute URLs in RSS Feeds

support
2

To solve this I ended up using a hyper complex partial to replace all URLs by absolute ones in the .Content variable on feeds:

{{ $html := htmlUnescape .Content | safeHTML }}

{{ $hrefs := findRE "href=\"([^\"]*)\"" $html }}
{{ range $href := $hrefs}}
  {{ $absHref := strings.TrimPrefix "href=\"" $href  }}
  {{ $absHref = strings.TrimSuffix "\"" $absHref  }}
  {{ $absHref = printf "href=\"%s\"" ($absHref | absURL) }}
  {{ $html = replace $html $href $absHref }}
{{ end }}

{{ $srcs := findRE "src=\"([^\"]*)\"" $html }}
{{ range $src := $srcs}}
  {{ $absSrc := strings.TrimPrefix "src=\"" $src  }}
  {{ $absSrc = strings.TrimSuffix "\"" $absSrc  }}
  {{ $absSrc = printf "src=\"%s\"" ($absSrc | absURL) }}
  {{ $html = replace $html $src $absSrc }}
{{ end }}

{{ $srcset := findRE "srcset=\"([^\"]*)\"" $html }}
{{ range $set := $srcset}}
  {{ $parts := strings.TrimPrefix "srcset=\"" $set  }}
  {{ $parts = strings.TrimSuffix "\"" $parts  }}
  {{ $parts = split $parts "," }}
  {{ $newSrcset := slice }}
  {{ range $part := $parts }}
    {{ $part = $part | replaceRE "^\\s*(.*)\\s*$" "$1" }}
    {{ $lg := split $part " " }}
    {{ $href := index $lg 0 | absURL }}
    {{ $size := index $lg 1 }}
    {{ $newSrcset = $newSrcset | append (printf "%s %s" $href $size) }}
  {{ end }}
  {{ $newSrcset = delimit $newSrcset ", " }}
  {{ $newSrcset = printf "srcset=\"%s\"" $newSrcset }}
  {{ $html = replace $html $set $newSrcset }}
{{ end }}

{{ return $html }}
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