1 files changed, 52 insertions, 0 deletions
diff --git a/src/feed b/src/feed
new file mode 100755
index 0000000..f202ba6
--- /dev/null
+++ b/src/feed
@@ -0,0 +1,52 @@
+#!/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'