#!/bin/bash
#  Copyright (C) 2008, 2010  Matias A. Fonzo, Santiago del Estero, AR
#
#  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 <http://www.gnu.org/licenses/>.

# Localización % Idioma:
TEXTDOMAINDIR=/usr/share/locale                             
TEXTDOMAIN=erupt

VERSION=1.5

# Funciones #

# Una función para mostrar mensajes normales:
msg() { printf '%s\n' "$@"; }

# Una función para mensajes de advertencia:
warn() { printf '%b\n' "$@" >&2; }

# Muestra la ayuda:
if [[ $1 = -[h?] || $1 = --help || $# -eq 0 ]]; then
  msg $"Examines a package with debugging purposes."                       \
       ""                                                                  \
      $"Usage: erupt package_name.tlz [directory]"                         \
       ""                                                                  \
      $"If you do not specify a directory name,"                           \
      $"the current working directory will be used."                       \
       ""
  exit;
fi
# Muestra la versión del programa (si es requerido):
if [[ $1 = -[vV] || $1 = --version ]]; then
  msg "erupt $VERSION"                                                     \
      "Copyright (C) 2008, 2010 Matias A. Fonzo <selk@dragora.org>."       \
      "License GPLv3+: GNU GPL version 3 or later:"                        \
      "<http://gnu.org/licenses/gpl.html>"                                 \
      "This is free software: you are free to change and redistribute it." \
      "There is NO WARRANTY, to the extent permitted by law."
  exit;
fi

# Un segundo argumento espera ser especificado como directorio,
# si no es así, se utilizará el directorio actual:
if [[ -d $2 ]]
then DIR="$2"
elif [[ -z $2 ]]
then DIR="$PWD"
else warn $"${0##*/}: ${2}: Invalid directory"; exit 1;
fi

msg "" $"! Erupting package ${1##*/} on the directory $DIR ..." ""
( umask 000
  LC_ALL=C tar --use-compress-program=lzip -xvf "$1" -C "$DIR"
) || exit $?;

if [[ -f ${DIR}/install/pre-post ]]; then
  msg $"pre-post execution for ${1}.  Dodging."
fi
if [[ -f ${DIR}/install/post-install ]]; then
  msg $"post-install execution for ${1}.  Dodging."
fi