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#!/bin/sh
set -eu
usage() {
echo 'Usage: feed FILENAME'
}
FILENAME="${1:-}"
eval "$(assert-arg -- "$FILENAME" 'FILENAME')"
absolute() {
printf 'https://domain-here.com/%s' "$(cat -)"
}
feed_article_title=''
site_name=' '
lang=en
now="$(date -uIs)"
url_absolute="$(printf '%s' "${FILENAME#src/}" | absolute)"
site_name_html="$(htmlesc "${site_name:?}")"
collection=article
collection_url_absolute="$(printf '%s' ${lang:?}/ | absolute)"
feed_title_html="$(eval "echo \"\$feed_${collection}_title\"" | htmlesc)"
export now url_absolute site_name_html collection_url_absolute feed_title_html
DIR="$(dirname "$FILENAME")"
author=
email=
cat <<EOF
<feed
xmlns="http://www.w3.org/2005/Atom"
xmlns:content="http://purl.org/rss/1.0/modules/content/"
xml:lang="$lang">
<link href="$url_absolute" rel="self" type="application/atom+xml" />
<link href="$collection_url_absolute" rel="alternate" type="text/html" hreflang="$lang" />
<title>$site_name_html</title>
<subtitle>$feed_title_html</subtitle>
<id>$url_absolute</id>
<updated>$now</updated>
<author>
<name>$author</name>
<email>$email</email>
</author>
EOF
find "$@" |
xargs cat |
sort -nr |
xargs cat
printf '</feed>\n'
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