commit bf27e7a47fa9cdb28e662935fa93f858e2bec897
Author: Vaclav Uruba <uruba@outlook.com>
Date:   Fri Aug 25 12:08:53 2023 +0200

    initial version

diff --git a/mige.sh b/mige.sh
new file mode 100755
index 0000000..9ca4e87
--- /dev/null
+++ b/mige.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+DIR_CONTENT=${DIR_CONTENT:-in}
+DIR_DIST=${DIR_DIST:-out}
+TEMPLATE_HEADER=${TEMPLATE_HEADER:-templates/header.html}
+TEMPLATE_FOOTER=${TEMPLATE_FOOTER:-templates/footer.html}
+SOURCEDIR=$( dirname -- $BASH_SOURCE )
+
+check_files () {
+	if [ ! -f "$SOURCEDIR/$TEMPLATE_HEADER" ]; then echo "Header template '$TEMPLATE_HEADER' doesn't exist."; exit 2; fi
+	if [ ! -f "$SOURCEDIR/$TEMPLATE_FOOTER" ]; then echo "Header template '$TEMPLATE_FOOTER' doesn't exist."; exit 2; fi
+	if [ ! -d "$SOURCEDIR/$DIR_CONTENT" ]; then echo "Content directory '$DIR_CONTENT' doesn't exist. Create it and add some content!"; exit 4; fi
+	if [ ! -d "$SOURCEDIR/$DIR_DIST" ]; then mkdir "$SOURCEDIR/$DIR_DIST"; echo "Directory '$DIR_DIST' created."; fi
+}
+
+process_file () {
+	local timep=$(date +%s%N)
+
+	mkdir -p $( dirname "$1" | sed "s/$SOURCEDIR\/$DIR_CONTENT/$SOURCEDIR\/$DIR_DIST/" )
+	local file_output=$( echo "$1" | sed "s/$SOURCEDIR\/$DIR_CONTENT/$SOURCEDIR\/$DIR_DIST/" )
+	cat "$SOURCEDIR/$TEMPLATE_HEADER" "$1" "$SOURCEDIR/$TEMPLATE_FOOTER" > $file_output 
+	while read -r variable; do
+		if [[ $variable =~ ^([0-9]+)=(.+)$ ]]; then
+			local variable_name=${BASH_REMATCH[1]}
+			local variable_value=${BASH_REMATCH[2]}
+			sed -i "s/\$$variable_name/$variable_value/g;/$variable/d" $file_output
+		else
+			echo -e "\e[38;5;208mWarning: could not match '$variable' as a variable assignment.\e[0m"
+		fi
+
+	done < <(grep -P '^\d+=.+$' $1)
+
+	timep=$((($(date +%s%N) - $timep)/1000000))
+	echo -e "\e[32mFile $1 processed to $file_output ($timep ms).\e[0m"
+}
+
+main () {
+	while IFS= read -d '' file_content; do
+		process_file "${file_content}" </dev/null
+	done < <(find "$SOURCEDIR/$DIR_CONTENT" -type f -print0)
+}
+
+check_files
+
+echo -e "\e[1m=== STARTING ===\e[0m"
+main
+echo -e "\e[1m=== FINISHED ===\e[0m"