#! /usr/bin/perl
################################################################################
## taskwarrior - a command line task list manager.
##
## Copyright 2006-2013, Paul Beckingham, Federico Hernandez.
##
## Permission is hereby granted, free of charge, to any person obtaining a copy
## of this software and associated documentation files (the "Software"), to deal
## in the Software without restriction, including without limitation the rights
## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
## copies of the Software, and to permit persons to whom the Software is
## furnished to do so, subject to the following conditions:
##
## The above copyright notice and this permission notice shall be included
## in all copies or substantial portions of the Software.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
## THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
## SOFTWARE.
##
## http://www.opensource.org/licenses/mit-license.php
##
################################################################################

use strict;
use warnings;

# Use the en-US.h file, or whatever was specified on the command line.
my $file = scalar @ARGV ? shift @ARGV : 'en-US.h';

# Find all the defined strings.
my @strings;
if (open my $fh, '<', $file)
{
  while (my $line = <$fh>)
  {
    push @strings, $1 if $line =~ /\#define\s+(STRING_\S+)/;
  }

  close $fh;
}

# Recursively search for all the defined strings, reporting those that are not
# used.
for my $string (@strings)
{
  print "$string is not used\n"
    if `git grep $string | grep -v [a-z][a-z]-[A-Z][A-Z].h` eq '';
}

exit 0;

################################################################################