Added option to show license

functions

@@ -11,3 +11,6 @@
 
 # Includi funzioni modalità rotate
 . "$SHIFTCTL_DIR/rotate_functions"
+
+# Includi licenza
+. "$SHIFTCTL_DIR/license_functions"

helper_functions

@@ -31,6 +31,7 @@ print_usage(){
   echo "  -v  Print current version"
   echo "  -t  Print the grand total of shifts durations"
   echo "  -r  Rotate shifts file"
+  echo "  -l  Show license"
 
   return 0
 }

license_functions

@@ -0,0 +1,705 @@
+# Variabili e funzioni di supporto
+# alla visualizzazione della licenza
+# del programma
+
+paginate(){
+  if [ -n "$PAGER" ]
+  then
+    $PAGER
+  elif which more 2>/dev/null || echoerr "Failed to paginate input with "$PAGER"."
+  then
+    more 2>/dev/null || echoerr "Failed to paginate input with "more"."
+  else
+    echoerr "No default pager set and "more" binary not found."
+  fi
+  
+  return 0
+}
+  
+paginate_license(){
+  paginate <<-"_EOF_"
+	                    GNU GENERAL PUBLIC LICENSE
+	                       Version 3, 29 June 2007
+	
+	 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+	 Everyone is permitted to copy and distribute verbatim copies
+	 of this license document, but changing it is not allowed.
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+	
+	  12. No Surrender of Others' Freedom.
+	
+	  If conditions are imposed on you (whether by court order, agreement or
+	otherwise) that contradict the conditions of this License, they do not
+	excuse you from the conditions of this License.  If you cannot convey a
+	covered work so as to satisfy simultaneously your obligations under this
+	License and any other pertinent obligations, then as a consequence you may
+	not convey it at all.  For example, if you agree to terms that obligate you
+	to collect a royalty for further conveying from those to whom you convey
+	the Program, the only way you could satisfy both those terms and this
+	License would be to refrain entirely from conveying the Program.
+	
+	  13. Use with the GNU Affero General Public License.
+	
+	  Notwithstanding any other provision of this License, you have
+	permission to link or combine any covered work with a work licensed
+	under version 3 of the GNU Affero General Public License into a single
+	combined work, and to convey the resulting work.  The terms of this
+	License will continue to apply to the part which is the covered work,
+	but the special requirements of the GNU Affero General Public License,
+	section 13, concerning interaction through a network will apply to the
+	combination as such.
+	
+	  14. Revised Versions of this License.
+	
+	  The Free Software Foundation may publish revised and/or new versions of
+	the GNU General Public License from time to time.  Such new versions will
+	be similar in spirit to the present version, but may differ in detail to
+	address new problems or concerns.
+	
+	  Each version is given a distinguishing version number.  If the
+	Program specifies that a certain numbered version of the GNU General
+	Public License "or any later version" applies to it, you have the
+	option of following the terms and conditions either of that numbered
+	version or of any later version published by the Free Software
+	Foundation.  If the Program does not specify a version number of the
+	GNU General Public License, you may choose any version ever published
+	by the Free Software Foundation.
+	
+	  If the Program specifies that a proxy can decide which future
+	versions of the GNU General Public License can be used, that proxy's
+	public statement of acceptance of a version permanently authorizes you
+	to choose that version for the Program.
+	
+	  Later license versions may give you additional or different
+	permissions.  However, no additional obligations are imposed on any
+	author or copyright holder as a result of your choosing to follow a
+	later version.
+	
+	  15. Disclaimer of Warranty.
+	
+	  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+	APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+	HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+	OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+	THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+	PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+	IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+	ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+	
+	  16. Limitation of Liability.
+	
+	  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+	WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+	THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+	GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+	USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+	DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+	PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+	EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+	SUCH DAMAGES.
+	
+	  17. Interpretation of Sections 15 and 16.
+	
+	  If the disclaimer of warranty and limitation of liability provided
+	above cannot be given local legal effect according to their terms,
+	reviewing courts shall apply local law that most closely approximates
+	an absolute waiver of all civil liability in connection with the
+	Program, unless a warranty or assumption of liability accompanies a
+	copy of the Program in return for a fee.
+	
+	                     END OF TERMS AND CONDITIONS
+	
+	            How to Apply These Terms to Your New Programs
+	
+	  If you develop a new program, and you want it to be of the greatest
+	possible use to the public, the best way to achieve this is to make it
+	free software which everyone can redistribute and change under these terms.
+	
+	  To do so, attach the following notices to the program.  It is safest
+	to attach them to the start of each source file to most effectively
+	state the exclusion of warranty; and each file should have at least
+	the "copyright" line and a pointer to where the full notice is found.
+	
+	    <one line to give the program's name and a brief idea of what it does.>
+	    Copyright (C) <year>  <name of author>
+	
+	    This program is free software: you can redistribute it and/or modify
+	    it under the terms of the GNU 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 General Public License for more details.
+	
+	    You should have received a copy of the GNU General Public License
+	    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+	
+	Also add information on how to contact you by electronic and paper mail.
+	
+	  If the program does terminal interaction, make it output a short
+	notice like this when it starts in an interactive mode:
+	
+	    <program>  Copyright (C) <year>  <name of author>
+	    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+	    This is free software, and you are welcome to redistribute it
+	    under certain conditions; type `show c' for details.
+	
+	The hypothetical commands `show w' and `show c' should show the appropriate
+	parts of the General Public License.  Of course, your program's commands
+	might be different; for a GUI interface, you would use an "about box".
+	
+	  You should also get your employer (if you work as a programmer) or school,
+	if any, to sign a "copyright disclaimer" for the program, if necessary.
+	For more information on this, and how to apply and follow the GNU GPL, see
+	<https://www.gnu.org/licenses/>.
+	
+	  The GNU General Public License does not permit incorporating your program
+	into proprietary programs.  If your program is a subroutine library, you
+	may consider it more useful to permit linking proprietary applications with
+	the library.  If this is what you want to do, use the GNU Lesser General
+	Public License instead of this License.  But first, please read
+	<https://www.gnu.org/licenses/why-not-lgpl.html>.'
+	_EOF_
+
+	return 0
+}
+
+show_license(){
+  paginate_license
+  echo -e "\nShiftctl is \e[0;32mFreeSoftware\e[0m, and is written with \e[0;32myour freedom\e[0m in mind.\n"
+
+  return 0
+}

shiftctl

@@ -30,7 +30,7 @@ MODE="record"
 ## Init
 
 # Parsa la linea di comando
-while getopts ":hvtr" flag
+while getopts ":hvtrl" flag
 do
   case "$flag" in
     h)
@@ -50,6 +50,11 @@ do
       MODE=rotate
       break
       ;;
+    l)
+      print_banner
+      show_license
+      exit 0
+      ;;
     ?)
       print_banner
       print_usage