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#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
feed FILENAME
feed -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
FILENAME the target feed to be generated
Generate FILENAME as an Atom feed. The collection type and
language are inferred by the name of FILENAME.
Examples:
Generate a feed for TILs:
$ feed src/en/feeds/til.xml
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
. src/lib.sh
FILENAME="${1:-}"
eval "$(assert_arg "$FILENAME" 'FILENAME')"
COLLECTION="$(basename "$FILENAME" '.xml')"
LANGUAGE="$(lang-for "$FILENAME")"
DIR="$(dirname "$(dirname "$FILENAME")")/$COLLECTION"
. src/lib/base.conf
# shellcheck source=/dev/null
. src/lib/base."$LANGUAGE".conf
now="$(date -uIs)"
url="$(url-for "${FILENAME#"$CONTENT_PREFIX"}" | absolute)"
site_name_html="$(htmlesc "${site_name:?}")"
export now url site_name_html
mkdir -p "$(dirname "$FILENAME")"
{
envsubst < src/lib/feed.xml
find "$DIR"/*.sortdata | sort -nr | xargs cat | xargs cat
printf '</feed>\n'
} > "$FILENAME"
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