From 89120ccb7322efcf6adb96ecb03f73ed8e0cc4a9 Mon Sep 17 00:00:00 2001
From: Jaidyn Ann <10477760+JadedCtrl@users.noreply.github.com>
Date: Thu, 28 Mar 2024 01:00:23 -0500
Subject: [PATCH] Use template for emoji subs; write env_subst()

---
 fedi2html.sh | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/fedi2html.sh b/fedi2html.sh
index 0525396..7122a96 100755
--- a/fedi2html.sh
+++ b/fedi2html.sh
@@ -80,6 +80,8 @@ POST_TEMPLATE='
 '
 
 
+EMOJI_TEMPLATE='<img class="emoji" src="$EMOJI_URL" alt="$EMOJI_SHORTCODE">'
+
 replace_emojis() {
 	local post_data="$1"
 	local emojis="$(echo "$post_data" | jq -r '.emojis[]|(.url + "\t" + .shortcode)')"
@@ -89,15 +91,25 @@ replace_emojis() {
 	cat > "$temp"
 
 	for line in $emojis; do
-		local url="$(echo "$line" | awk '{print $1}')"
-		local shortcode="$(echo "$line" | awk '{print $2}')"
-		sed -i "s%:${shortcode}:%<img class=\"emoji\" src=\"$url\" alt=\"${shortcode}\">%g" \
-			"$temp"
+		local EMOJI_URL="$(echo "$line" | awk '{print $1}')"
+		local EMOJI_SHORTCODE="$(echo "$line" | awk '{print $2}')"
+		local value="$(env_subst "$EMOJI_TEMPLATE")"
+        sed -i "s%:${EMOJI_SHORTCODE}:%${value}%g" "$temp"
 	done
 	cat "$temp"
 	rm "$temp"
 }
 
+prep_template() {
+	local template="$1"
+	echo "$template" \
+		| sed 's%\"%\\\"%g'
+}
+
+env_subst() {
+	local template="$1"
+	eval "echo \"$(prep_template "$template")\""
+}
 
 render_post() {
 	local post_data="$1"
@@ -108,8 +120,6 @@ render_post() {
 	local POST_URL="$(echo "$post_data"       | jq -r .url)"
 	local POST_DATE="$(echo "$post_data"      | jq -r .created_at)"
 	local POST_CONTENT="$(echo "$post_data"   | jq -r .content | replace_emojis "$post_data")"
-	eval "echo \"$(echo "$POST_TEMPLATE" | sed 's%\"%\\\"%g')\""
+	env_subst "$POST_TEMPLATE"
 }
 
-
-