From 911eca714c5c13cde26a79854ee636330fec6850 Mon Sep 17 00:00:00 2001
From: Lauren Liberda <laura@selfisekai.rocks>
Date: Wed, 23 Jun 2021 00:40:35 +0200
Subject: [PATCH] html_encode: support for data from stdin

---
 src/misc.sh     | 6 +++++-
 src/template.sh | 8 ++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/misc.sh b/src/misc.sh
index f6516a1..ee13638 100755
--- a/src/misc.sh
+++ b/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)
diff --git a/src/template.sh b/src/template.sh
index 68ad0c2..d75434a 100755
--- a/src/template.sh
+++ b/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"