#! /bin/bash

# Copyright (C) 2011, 2012, 2013, 2014 Free Software Foundation, Inc.

# This file is part of GNUnited Nations.

# GNUnited Nations 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.

# GNUnited Nations 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 GNUnited Nations.  If not, see <http://www.gnu.org/licenses/>.

# Wraps around add-fuzzy-diff to provide a command line interface compliant
# with GNU Coding Standards

function version () {
cat <<EOF
gnun-add-fuzzy-diff (GNUnited Nations) 0.10
Copyright (C) 2014 Free Software Foundation, Inc.
You may redistribute copies of GNUnited Nations
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
EOF
}

function usage () {
cat <<EOF
Usage: gnun-add-fuzzy-diff [OPTION...] [FILE]
Add comments with differences to previous msgids to fuzzy translations
in a PO file.

Options:
  -i[SUFFIX], --in-place[=SUFFIX]
                 Edit files in place (makes backup if extension supplied)
  -v, --version  Display version info and exit
  -h, --help     Display this help and exit

Report bugs to bug-gnun@gnu.org
GNUnited Nations home page: <https://www.gnu.org/software/gnun/>
General help using GNU software: <http://www.gnu.org/gethelp/>
EOF
}

function single_file_needed () {
  echo 1>&2 "$0:" Single FILE argument is required.
  exit 1
}

ADD_FUZZY_DIFF=./add-fuzzy-diff
in_place=
file=

while test $# -ge 1; do
  case "$1" in
      --help | -h )
	  usage
	  exit 0
	  ;;
      --version | -v )
	  version
	  exit 0
	  ;;
      -i* | --in-place=* | --in-place )
	  in_place="$1"
	  ;;
      -- )
          shift
          break
	  ;;
      -* )
          echo 1>&2 "$0:" Invalid option -- \'$1\'.
          exit 1
	  ;;
      * )
          if test "x$file" = x; then
            file="$1"
          else
            single_file_needed
          fi
	  ;;
  esac
  shift
done

if test "x$file" = x; then
  if test $# -lt 1; then
    single_file_needed
  else
    file="$1"
    shift
  fi
fi
if test $# -gt 0; then
  single_file_needed
fi

$ADD_FUZZY_DIFF $in_place "$file"

exit $?