From b0be84a36a69fdd93da63c2b3dac7315471c3df5 Mon Sep 17 00:00:00 2001
From: Alessandro Iezzi <aiezzi@alessandroiezzi.it>
Date: Wed, 21 Jun 2023 15:10:52 +0200
Subject: Add update-copyright function

---
 noide | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/noide b/noide
index fffffa4..80bdd32 100755
--- a/noide
+++ b/noide
@@ -1,5 +1,6 @@
 #!/bin/sh
 
+#-
 # Copyright (c) 2023, Alessandro Iezzi
 #
 # Redistribution and use in source and binary forms, with or without
@@ -23,3 +24,55 @@
 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+update_copyright()
+{
+	if [ -z $1 ]; then
+		echo "$0 --update-copyright <file>"
+    	exit 1
+	fi
+
+	ifile=$1
+	ffile=license-header.txt
+	ofile=tmp`date +%s`-2
+	ftype="`file $1 | sed -E 's/.*: (.*),.*/\1/g'`"
+	tmpfile=tmp`date +%s`-1
+
+	if [ "$ftype" = 'C source' ]; then
+		s="\/\*-"
+		m=" \*"
+		e=" \*\/"
+	elif [ "$ftype" = 'makefile script' ]; then
+		s="#-"
+		m="#"
+		e=""
+	elif [ "$ftype" = 'POSIX shell script' ]; then
+		s="#-"
+		m="#"
+		e=""
+	else
+		echo "Unknown file type"
+		exit 1
+	fi
+
+	printf "%s\n" $s | sed 's/\\//g' > $tmpfile
+	cat $ffile | sed "s/^/$m /g" | sed "s/^$m $/$m/g" >> $tmpfile
+	printf "$e\n" | sed 's/\\//g' >> $tmpfile
+
+	sed "
+	/^$s/r "$tmpfile"
+	/^$s/,/^$e$/d
+	" <"$ifile" >"$ofile"
+
+	mv $ofile $ifile
+
+	rm $tmpfile
+}
+
+while [ $# -gt ]; do
+	case $1 in
+		--update-copyright)
+			update_copyright $@
+		;;
+	esac
+	shift
+done
-- 
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