cdist/core/__cdist_is_executable

#!/bin/sh
#
# 2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist 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.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
# Test whether something is executable (that should be executable) or
# is missing
#

__cdist_is_executable()
{
   [ $# -eq 1 ] || __cdist_exit_err "<executable>"

   if [ -e "$1" ]; then
      if [ -f "$1" ]; then
         if [ -x "$1" ]; then
            # Exists and is a correct executable
            true
         else
            __cdist_exit_err "$1 exists, but is not executable."
         fi
      else
         __cdist_exit_err "$1 exists, but is not a file."
      fi
   else
      # Does not exist
      false
   fi
}