script working!

wolf_scripts/license_header_2023.txt

+// Copyright (C) 2021-2023 Institut de Robòtica i Informàtica Industrial, CSIC-UPC.
+// Authors: Joan Solà Ortega (jsola@iri.upc.edu)
+// All rights reserved.
+//
+// This file is part of WOLF
+// WOLF is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.

wolf_scripts/license_manager.sh

 #!/bin/bash
 
+line_start_mark="//--------LICENSE_START--------"
+line_end_mark="//--------LICENSE_END--------"
+
 #options
 tmp=false
+mode="none"
 path=""
 #recursive=true
 license=""
-remove=false
 
 for i in "$@"; do
   case $i in
@@ -21,6 +24,22 @@ for i in "$@"; do
       license="${i#*=}"
       shift # past argument=value
       ;;
+    --add)
+      mode="add"
+      if [ $mode == "update" ]; then
+        echo "Error: Script cannot be called with both options: --update or --add"
+        exit 1
+      fi
+      shift # past argument=value
+      ;;
+    --update)
+      mode="update"
+      if [ $mode == "add" ]; then
+        echo "Error: Script cannot be called with both options: --update or --add"
+        exit 1
+      fi
+      shift # past argument=value
+      ;;
 #    --non-recursive)
 #      recursive=false
 #      shift # past argument=value
@@ -45,7 +64,7 @@ else
 fi
 
 if [ "$license" == "" ]; then
-  echo "Error: Please, provide the path to the folder containing the code with --license-header=/my/license/header/file.txt"
+  echo 'Error: Please, provide the path to the folder containing the code with --license-header=/my/license/header/file.txt'
   exit 1
 else
   if [ -f "$license" ]; then
@@ -57,9 +76,16 @@ else
   fi
 fi
 
+echo "mode: ${mode}"
+
+if [ $mode == "none" ]; then
+  echo "Error: Script should be called with one of the following options: --update or --add"
+  exit 1
+fi
+
 # PATH (AND tmp FOLDER)
 folder=$path
-if $tmp; then
+if [ $tmp == true ]; then
   echo "Creating temporary folder: ${path}_tmp"
   mkdir -pv ${path}_tmp
   cp -a $path/. ${path}_tmp
@@ -67,17 +93,34 @@ if $tmp; then
 fi
 
 # DETECT AND REMOVE EXISTING LICENSE
-#TODO
+if [ $mode == "update" ]; then
+  echo "Recursely removing license header from all files (.c, .cpp, .h, .hpp)"
+  for i in $(find $folder -name '*.c' -or -name '*.cpp' -or -name '*.h' -or -name '*.hpp')
+  do
+    if grep -Fxq ${line_start_mark} $i 
+    then
+      echo "  Removing license header from file ${i}"
+      line_start="$(grep -wn $line_start_mark ${i} | head -n 1 | cut -d: -f1)"
+      line_end="$(grep -wn $line_end_mark ${i} | head -n 1 | cut -d: -f1)"
+      echo ${line_start}
+      echo ${line_end}
+      #echo "${line_start},${line_end}d" $i
+      #sed $('${line_start},${line_end}d)' $i
+      awk -v m=$line_start -v n=$line_end 'm <= NR && NR <= n {next} {print}' $i > tmpfile && mv tmpfile $i 
+      cat $i
+    fi
+  done
+  #TODO
+fi
 
 # ADD CONTENT OF license-file AT THE BEGINNING OF CODE FILES
 echo "Recursively adding license header to all files (.c, .cpp, .h, .hpp)"
 for i in $(find $folder -name '*.c' -or -name '*.cpp' -or -name '*.h' -or -name '*.hpp')
 do
-  if grep -Fxq "//LICENSE_START" $i 
-  then
+  if grep -Fxq ${line_start_mark} $i; then
     echo "skippping ${i}"
   else
-    ( echo $'//LICENSE_START\n'; cat ${license}; echo $'\n//LICENSE_END\n'; cat $i ) > temp_file
+    ( echo ${line_start_mark}$'\n//'; cat ${license}; echo $'//\n'${line_end_mark}; cat $i ) > temp_file
     mv temp_file $i
   fi
-done
+done
\ No newline at end of file