html_encode: support for data from stdin

src/misc.sh

@@ -39,7 +39,11 @@ function post_dump() {
 
 # html_encode(string)
 function html_encode() {
-	sed 's/\&/\&amp;/g;s/</\&#60;/g;s/>/\&#62;/g;s/%/\&#37;/g;s/\//\&#47;/g;s/\\/\&#92;/g;s/'"'"'/\&#39;/g;s/"/\&#34;/g;s/`/\&#96;/g;s/?/\&#63;/g;' <<< "$1"
+	if [[ "$1" == "" ]]; then
+		sed 's/\&/\&amp;/g;s/</\&#60;/g;s/>/\&#62;/g;s/%/\&#37;/g;s/\//\&#47;/g;s/\\/\&#92;/g;s/'"'"'/\&#39;/g;s/"/\&#34;/g;s/`/\&#96;/g;s/?/\&#63;/g;'
+	else
+		sed 's/\&/\&amp;/g;s/</\&#60;/g;s/>/\&#62;/g;s/%/\&#37;/g;s/\//\&#47;/g;s/\\/\&#92;/g;s/'"'"'/\&#39;/g;s/"/\&#34;/g;s/`/\&#96;/g;s/?/\&#63;/g;' <<< "$1"
+	fi
 }
 
 # url_encode(string)

src/template.sh

@@ -7,8 +7,12 @@ function render() {
 	local -n ref=$1
 	local tmp=$(mktemp)
 	for key in ${!ref[@]}; do
-		local value="$(html_encode "${ref[$key]}" | sed -E 's/\&/�UwU�/g')"
-		echo 's/\{\{\.'"$key"'\}\}/'"$value"'/g' >> "$tmp"
+		if [[ "${ref[$key]}" != "" ]]; then
+			local value="$(html_encode "${ref[$key]}" | sed -E 's/\&/�UwU�/g')"
+			echo 's/\{\{\.'"$key"'\}\}/'"$value"'/g' >> "$tmp"
+		else
+			echo 's/\{\{\.'"$key"'\}\}//g' >> "$tmp"
+		fi
 	done
 	template="$(sed -E -f "$tmp" <<< "$template")"
 	sed -E 's/�UwU�/\&/g' <<< "$template"