v2: Support Atom feeds and collection translations

1 files changed, 91 insertions, 0 deletions

diff --git a/v2/src/bin/feed b/v2/src/bin/feed
new file mode 100755
index 0000000..96c40a6
--- /dev/null
+++ b/v2/src/bin/feed
@@ -0,0 +1,91 @@
+#!/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"