v2: Generate collections index.html pages and their "by-category" equivalents

1 files changed, 128 insertions, 0 deletions

diff --git a/v2/src/bin/index b/v2/src/bin/index
new file mode 100755
index 0000000..36750b3
--- /dev/null
+++ b/v2/src/bin/index
@@ -0,0 +1,128 @@
+#!/bin/sh
+set -eu
+
+usage() {
+	cat <<-'EOF'
+		Usage:
+		  collection FILENAME
+		  collection -h
+	EOF
+}
+
+help() {
+	cat <<-'EOF'
+		Options:
+		  -h, --help    show this message
+
+		  FILENAME      the target collection HTML page to be generated
+
+
+		  Generate FILENAME as a collection index.  The collection type
+		  and language are inferred by the name of FILENAME.
+
+
+		Examples:
+
+		  Generate an index.html entry for english pastebins:
+
+		    $ collection src/en/pastebins/index.html
+	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')"
+DIR="$(dirname "$FILENAME")"
+
+
+l="$(lang-for "$FILENAME")"
+. src/lib/base.conf
+. src/lib/generated.conf
+# shellcheck source=/dev/null
+. src/lib/generated."$l".conf
+# shellcheck source=/dev/null
+. src/lib/base."$l".conf
+
+url_part="$(printf '%s' "${FILENAME#"$CONTENT_PREFIX"/}" | sed "s|\.md$|.html|")"
+url_absolute="$(url-for "$url_part" | absolute)"
+collection="$(collection-for "$FILENAME")"
+feed_url="$(url-for "${DIR#"$CONTENT_PREFIX"/}"/feed.xml)"
+by_category_url="$(url-for "${DIR#"$CONTENT_PREFIX"/}/${by_category_url_part:?}")"
+title_html="$(eval "echo \"\$index_${collection}_title\"" | htmlesc)"
+index_recent_title_html="$(eval "echo \"\$index_recent_${collection}_title\"" | htmlesc)"
+index_category_title_html="$(eval "echo \"\$index_category_${collection}_title\"" | htmlesc)"
+export url_absolute feed_url by_category_url title_html index_recent_title_html \
+	index_category_title_html
+
+
+
+mkdir -p "$DIR"
+{
+	cat src/lib/preamble.html src/lib/index-preamble.html | envsubst
+	find "$DIR"/*.sortdata 2>/dev/null |
+		sort -nr |
+		xargs cat |
+		sed 's|\.md$|.indexentry|' |
+		xargs cat
+	cat src/lib/index-postamble.html src/lib/postamble.html | envsubst
+} > "$FILENAME"
+
+
+CATEGORY_FILENAME="$CONTENT_PREFIX$by_category_url"
+echo "$CATEGORY_FILENAME" > "${FILENAME%.html}.extrahtml"
+
+url_absolute="$(absolute "$by_category_url")"
+title_html="$(eval "echo \"\$index_category_${collection}_title\"" | htmlesc)"
+export url_absolute title_html
+
+
+DIR="$(dirname "$CATEGORY_FILENAME")"
+mkdir -p "$DIR"
+{
+	envsubst < src/lib/preamble.html
+	while read -r category; do
+		feed_url="$(url-for "${DIR#"$CONTENT_PREFIX"/}/feed.$category.xml")"
+		index_recent_title_html="$category"
+		export category feed_url index_recent_title_html
+
+		envsubst < src/lib/category-header.html
+		echo '        <ul>'
+		< "$DIR/$category.category" \
+			sed 's|\.md$|.categoryentry|' |
+			xargs cat
+		echo '        </ul>'
+	done < "$DIR"/index.categories
+	envsubst < src/lib/postamble.html
+} > "$CATEGORY_FILENAME"