From 95340ca30788ef5478d5c51770f101f9f62cdb08 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=A1clav=20Uruba?= <uruba@outlook.com>
Date: Thu, 28 Dec 2023 14:04:31 +0100
Subject: [PATCH] add support for global template variables

---
 mige.sh | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/mige.sh b/mige.sh
index 6643d81..8b43e31 100755
--- a/mige.sh
+++ b/mige.sh
@@ -9,6 +9,7 @@ REGEX_VARIABLE="^([0-9]+)=(.+)$"
 SEPARATOR_EMBED="|"
 TEMPLATE_HEADER=${TEMPLATE_HEADER:-templates/header.html}
 TEMPLATE_FOOTER=${TEMPLATE_FOOTER:-templates/footer.html}
+TEMPLATE_VARS=${TEMPLATE_VARS:-.vars}
 SOURCEDIR=$PWD
 
 OPTION_ASSETS=false
@@ -41,26 +42,26 @@ replace_variables() {
         if [[ $variable =~ $REGEX_VARIABLE ]]; then
             local variable_name=${BASH_REMATCH[1]}
             local variable_value=${BASH_REMATCH[2]}
-            sed -i "s/\$$variable_name/$variable_value/g;/$variable/d" $1
+            sed -i "s|\$$variable_name|$variable_value|g;\|$variable|d" $1
         else
             echo -e "\e[38;5;208mWarning: could not match '$variable' as a variable assignment.\e[0m"
         fi
-    done < <(grep -P $REGEX_VARIABLE $1)
+    done < <(grep -P $REGEX_VARIABLE $1 | sort -gr)
 }
 
 replace_embeds () {
     while read match; do
         IFS=$SEPARATOR_EMBED read -ra parts <<< "$match"
-        file_embed="$SOURCEDIR/$DIR_EMBED/$(echo "${parts[0]}$SEPARATOR_EMBED" | sed -r "s/$REGEX_EMBED/\1/")"
+        file_embed="$SOURCEDIR/$DIR_EMBED/$(echo "${parts[0]}$SEPARATOR_EMBED" | sed -r "s|$REGEX_EMBED|\1|")"
         params=("${parts[@]:1}")
 
         if [ -f "$file_embed" ]; then
             expr_replace=""
             for index in "${!params[@]}"; do
-                expr_replace+="s/\$$(($index+1))/${params[index]}/g;"
+                expr_replace+="s|\$$(($index+1))|${params[index]}|g;"
             done
-            expr_replace+="s/\n//g;"
-            sed -i "s/$match/$(sed -z "$expr_replace" $file_embed)/g" $1
+            expr_replace+="s|\n||g;"
+            sed -i "s|$match|$(sed -z "$expr_replace" $file_embed)|g" $1
         else
             echo -e "\e[38;5;208mWarning: embed file '$file_embed' doesn't exist, skipping.\e[0m"
         fi
@@ -71,9 +72,13 @@ process_file () {
     local timep=$(date +%s%N)
     local sourcediresc=${SOURCEDIR//\//\\/}
 
-    mkdir -p $( dirname "$1" | sed "s/$sourcediresc\/$DIR_CONTENT/$sourcediresc\/$DIR_DIST/" )
-    local file_output=$( echo "$1" | sed "s/$sourcediresc\/$DIR_CONTENT/$sourcediresc\/$DIR_DIST/" )
-    cat "$SOURCEDIR/$TEMPLATE_HEADER" "$1" "$SOURCEDIR/$TEMPLATE_FOOTER" > $file_output 
+    mkdir -p $( dirname "$1" | sed "s|$sourcediresc/$DIR_CONTENT|$sourcediresc/$DIR_DIST|" )
+    local file_output=$( echo "$1" | sed "s|$sourcediresc/$DIR_CONTENT|$sourcediresc/$DIR_DIST|" )
+    cat "$SOURCEDIR/$TEMPLATE_HEADER" "$1" "$SOURCEDIR/$TEMPLATE_FOOTER" > $file_output
+
+    if [ -f "$2" ]; then
+        cat "$2" >> $file_output
+    fi
 
     if [ $OPTION_EMBEDS = true ]; then
         replace_embeds $file_output
@@ -95,8 +100,14 @@ process_assets () {
 }
 
 main () {
+    local file_template_vars="$SOURCEDIR/$TEMPLATE_VARS"
+    if [ ! -f "$file_template_vars" ]; then
+        echo -e "\e[38;5;208mWarning: template vars file '$file_template_vars' doesn't exist, skipping.\e[0m"
+        file_template_vars=""
+    fi
+
     while IFS= read -d '' file_content; do
-        process_file "${file_content}" </dev/null
+        process_file "${file_content}" "${file_template_vars}" </dev/null
     done < <(find "$SOURCEDIR/$DIR_CONTENT" -type f -print0)
 
     if [ $OPTION_ASSETS = true ]; then