note description: "A command line switch file validator that checks if a file exists." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date$" revision: "$Revision$" class ARGUMENT_FILE_VALIDATOR inherit ARGUMENT_VALUE_VALIDATOR feature {NONE} -- Validation validate_value (a_value: READABLE_STRING_GENERAL) -- local l_file: RAW_FILE retried: BOOLEAN do if not retried then create l_file.make_with_name (a_value) if l_file.exists then if l_file.is_directory or else l_file.is_device then invalidate_option (e_file_is_not_file) end else invalidate_option (e_file_does_not_exist) end else invalidate_option (e_invalid_file_name) end ensure then a_value_exists: is_option_valid implies (create {RAW_FILE}.make_with_name (a_value)).exists a_value_exists: is_option_valid implies not (create {RAW_FILE}.make_with_name (a_value)).is_directory a_value_exists: is_option_valid implies not (create {RAW_FILE}.make_with_name (a_value)).is_device rescue retried := True retry end feature {NONE} -- Internationalization e_invalid_file_name: IMMUTABLE_STRING_32 once create Result.make_from_string_general ("The specified file name is invalid.") end e_file_is_not_file: IMMUTABLE_STRING_32 once create Result.make_from_string_general ("The specified file does not represent a file.") end e_file_does_not_exist: IMMUTABLE_STRING_32 once create Result.make_from_string_general ("The specified file does not exist.") end ;note copyright: "Copyright (c) 1984-2009, Eiffel Software" license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)" licensing_options: "http://www.eiffel.com/licensing" copying: "[ This file is part of Eiffel Software's Eiffel Development Environment. Eiffel Software's Eiffel Development Environment 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, version 2 of the License (available at the URL listed under "license" above). Eiffel Software's Eiffel Development Environment 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 Eiffel Software's Eiffel Development Environment; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ]" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end