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same_executables.e
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1999-06-05
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-- This file is part of SmallEiffel The GNU Eiffel Compiler.
-- Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
-- Dominique COLNET and Suzanne COLLIN - colnet@loria.fr
-- http://SmallEiffel.loria.fr
-- SmallEiffel 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 2, or (at your option) any later
-- version. SmallEiffel 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 SmallEiffel; see the file COPYING. If not,
-- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
class SAME_EXECUTABLES
--
-- Check if two files given as arguments are (quite) the same
-- executables files.
-- Terminate execution with the corresponding exit status code.
--
creation make
feature {NONE}
msg1, msg2: STD_FILE_READ;
feature
make is
local
path1, path2: STRING;
do
if argument_count < 2 then
io.put_string("usage: same_files <path1> <path2>%N");
die_with_code(exit_failure_code);
end;
path1 := argument(1);
path2 := argument(2);
exists(path1);
exists(path2);
if same_executables(path1,path2) then
io.put_string("Sames files.%N");
else
io.put_string("Files differ.%N");
die_with_code(exit_failure_code);
end;
end;
feature {NONE}
same_executables(path1,path2: STRING): BOOLEAN is
local
f1, f2: STD_FILE_READ;
diff_count: INTEGER;
stop: BOOLEAN;
do
from
!!f1.connect_to(path1);
if f1.is_connected then
if not f1.end_of_input then
f1.read_character;
end;
end;
!!f2.connect_to(path2);
if f2.is_connected then
if not f2.end_of_input then
f2.read_character;
end;
end;
diff_count := 4;
until
stop
loop
if f1.end_of_input then
if f2.end_of_input then
stop := true;
Result := true;
else
stop := true;
Result := false;
end;
elseif f2.end_of_input then
stop := true;
Result := false;
else
if f1.last_character /= f2.last_character then
diff_count := diff_count - 1;
if diff_count = 0 then
stop := true;
Result := false;
end;
end;
f1.read_character;
f2.read_character;
end;
end;
f1.disconnect;
f2.disconnect;
end;
exists(path: STRING) is
do
if not file_exists(path) then
io.put_string("File : %"");
io.put_string(path);
io.put_string("%" not found.%N");
die_with_code(exit_failure_code);
end;
end;
end -- SAME_EXECUTABLES